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Observations

April 24, 2017, 2:30 p.m. PST

Region: Mt Hood
Observation by Laura Green

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: Mt. Hood Meadows Ski Resort, closed this Mon-Thur. , Front bowls area. Below tree line, ~ 5800', steep and wind loaded at the tops, E aspect.

Route Description: Climbed up R side of South Canyon, near Daisy. Skied down R side of 4 bowl and 5 bowl, near the trees.

Weather: Snowing hard, blowing 15-25 mph. at least, temps around 31 F. Limited visibility.

Snowpack: rapid accumulation of ~ 12' new, dense, wet, fresh on top of old melt freeze. Tho wind loaded, not cracking or brittle as often the case, due to wetness. However, poor bonding of the wet storm layer was easy to shed in ski cuts.

Avalanches: Test ski cut at top of Four Bowl, conservative angle and location on the right side, easily yielded Size 1 wet storm slab release. This confirmed the current Hazard advisory; we were not surprised and were prepared to ski lower angle pitches. Did not see other skiers nor other slides at that location. I would expect that any more snow and /or sun effects will make these releases larger and more sensitive.

April 21, 2017, 4 p.m. PST

Region: Stevens Pass
Observation by Brook Peterson

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: On the exposed, south-facing ridge to the SE of Union Peak, above USFS 6700 Road / Smithbrook. The slopes were covered in prior debris - lots of stuff sloughing off right now.

Route Description: On our way down from McCausland, we were traversing beneath Smithbrook road, just to the SW of the the road switchback. Pretty near the summer trailhead, probably about 47.802, -121.078

Weather: Sun, clear skies, felt warm

Snowpack: Very wet, heavy snow

Avalanches: loose wet avalanche triggered near higher rock bands above the road. Widened to ~ hundred or more meters, crossed the upper road switchback and the toe came all the way through trees to the lower road. We did not see any broken trees, would guess D2.

April 21, 2017, 12:33 p.m. PST

Region: East Slopes North - Canadian Border to Lake Chelan
Observation by Munnin , Huggin , and SKIER-X

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Hwy.20 , Cuthroat slide chutes . mi. 166.2

Route Description: Hwy. 20 NCH.

Weather: Sunny , warm , no wind .

Snowpack: 4-6" wet slushy loose snow on warming granular base . Fragile and unconsolidated .

Avalanches: Active avy. cycle in progress with many releases of warming rock faces , some reaching road. Many Zombie cycleists , unresponsive to warnings of the dangers of traveling below these avy. chutes and rock faces , especially when active . None carry trans. , shovel ,probe ,emergency gear , or awareness , even though the DOT has posted that info. in the middle of the hwy. at Silverstar gate. Cycleist are the next user group in need of education focus . Hopefully this will happen before tragedy strikes ! X.

April 21, 2017, 9:25 a.m. PST

Region: West Slopes Central - Skagit River to South of I-90

Elevation: Below treeline

Aspect: SW

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: Sun crust snow, moderate sun cupping. Post hole as day warmed.

April 11, 2017, 1 p.m. PST

Region: West Slopes North - Canadian Border to Skagit River
Observation by Pete Beglin

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: Table Mt. Mt. Baker side country

Route Description: N facing 38-40 degree short convex pitch above long 30-35 degree slope, at 5000-5200 ft

Weather: Sunny, mild breeze, about 38 degrees

Snowpack: On northerly aspects, boot top loose powder over firm, smooth and fast-skiing surface from rain up to that level before recent colder snow; non coalescent and well bonded in areas not affected by wind slab. Wind slab pockets were in isolated predictable locations and much more firm

Avalanches: wind slab triggered by skier in our party who skied the feature; broke about 15 - 20 feet above the skier, who quickly exited left safely; crown was approx. 10 inches high, propagated more than 100 feet wide, ran fast to near the end of the slope, running about 400 vertical feet.

April 7, 2017, 9:15 a.m. PST

Region: West Slopes Central - Skagit River to South of I-90

Elevation: Near treeline

Aspect: SW

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Comments: rode Tonga Ridge. very wet snow with loose upper layer down to about 2 feet. very unstable. triggered multiple small avalanches before getting off the hill

April 6, 2017, 5 p.m. PST

Region: Snoqualmie Pass

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: Under transmission lines above Rockdale lake. East facing.

Route Description: Accessed via Surveyors lake.

Weather: Mostly cloudy becoming clear. About 40 degrees.

Avalanches: Loose wet. Started small and very slow like a hisser slide about 4 inches deep. After about 50ft it would pick up speed and entrain a lot more snow.

April 2, 2017, noon PST

Region: Snoqualmie Pass

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Source Lake to Snow Lake

Route Description: Variable Routes - Original Plan was from Source Lake to Chair Peak Shoulder --> North Face to Chair Peak then assess from there. Chair peak was socked in, so we took the standard route to Snow Lake Divide. Melakwa Pass and Mt. Roosevelt were socked in as well so a circumnavigation of Chair Peak or an ascent of Mt Roosevelt were abandoned. Toured to West end of Snow Lake, waited for 30 minutes for a glimmer of hope, but turned around and retraced our route.

Weather: Mid to upper 20s, snow showers throughout the day, with a 45 minute sun break at 11:45. Light to moderate winds.

Snowpack: Dust on crust in the morning, especially the north side of Snow Lake. In the early afternoon, while heading back to Source Lake, the pack got wet and heavy. Boot penetration on the Source Lake side was nuts deep. Ski penetration in the morning and in the Snow Lake area was bullet proof. Skinning on stepper aspects forced boot pack in a few isolated spots.

Avalanches: Widespread wet slides, both loose and slab, from the early/mid-week cycle. Slide debris from Chair Peak Basin was substantial. No recent evidence of any movement.

March 31, 2017, 3:33 p.m. PST

Region: East Slopes North - Canadian Border to Lake Chelan
Observation by Munnin , Huggin , and , SKIER-X

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Wash. Pass hairpin. Lower Gun Tower

Route Description: Pioneer route avoiding hairpin and Spire Gulchhh. 5000'-6733'

Weather: Mostly cloudy , short sun breaks then mostly sunny in afternoon. 31ish. deg.

Snowpack: 10' at W.P. . Min. new snow , transported into ribbons and crust on N.E. aspect higher elev. to glistening degenerating clean 8" sun soft porn on S. asspect down low !

Avalanches: Libertybell 1, 2, and 3 slid across highway about 3/29 . L.B. 3 crossed and filled upper and terminated at lower crossing.

March 28, 2017, 3:33 p.m. PST

Region: East Slopes North - Canadian Border to Lake Chelan
Observation by Huginn , Muninn , and SKIER-X

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: Washington Pass Arena

Route Description: N./N.W. facing aspect , 5400-7400

Weather: Snowing , 15 mph. s.w. wind colliding with easterly flow at pass level, warming to near freezing throughout the day .

Snowpack: Wind affected storm snow 8-12" over firm crust . Slab close to ridgelines in lee on steeper slopes . 10'-11' snow depth on the Wa. Pass D.O.T. stick.

Avalanches: Ski triggered 10" slabs on E.aspect on 40+ deg. lee slopes. 30' ish wide running 30' and settling , on rollover pillow type terrain . Terrain farther from wind affect was unreactive . Delancy Ridge had one very recent lg. event in a gully close to the W. boundary and Needles .

March 28, 2017, 2:50 p.m. PST

Region: West Slopes North - Canadian Border to Skagit River

Elevation: Near treeline

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: Snoboarder-triggered slide -- gobbles run at Mt Baker, directly beneath chairline. Runout continued 200 feet downhill from fracture and depth of 2 feet, 60 feet wide. No persons compromised. Location about half-way down first face, past pipeline.

March 27, 2017, 1:30 p.m. PST

Region: West Slopes North - Canadian Border to Skagit River
Observation by Matthias Walcher

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: We skied the ESE face highlighted in the map. Went until the top and skied down to the lake again. Skied up to 40° in open trees and small features.

Route Description: We followed a S to N ramp at the end of the lake and got to the ridge of that mountain. We followed the ridge until the top. We skied down through the trees, crossed our skintracks again and then went down to one of the small colouirs which lead to the valley bottom. Skicutted the fan which leads into the colouir and the already wet new snow slid down the gully until the fan below the gully.

Weather: Partly heavy snowfall, low visibility, temperatures around zero degrees, southerly winds.

Snowpack: Around 15 cm of new snow on top of a well settled old snowpack. New snow was not yet bonded to the snowpack. ECT 2/2@15cm and ECT 13/np@15cm. Slab was building up with temperature rise during the day. Besides of the new snow, no mentionable results in the snowpack. About 115cm down a very thin weak layer composed of facets or well preserved dendrites between two harder layers of small grains. Windslabs of minor importance, only very local. No cornices on the ridge.

Avalanches: Triggered small size 1 to 1.5 wet slab on ESE at 1460 m. Run down until 1340 m. Fracture depth about 15cm, Fracture width: 10m, path lenght: 120 m.

March 27, 2017, noon PST

Region: Stevens Pass
Observation by Ingo Dusseldorf

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Jim Hill

Route Description: Up Lanham Creek, out Henry Creek. Failed hitchhike on Rt 2 turned hike back to start point was most dangerous terrain. Thanks motorists.

Weather: Clouds, sun, snow, wind. Westerly pass winds meeting easterly flow in the drainages. Warming throughout day

Snowpack: Wind impacted 15cm storm snow on top, bonding to rain/melt crust of previous Saturday/Sunday.

Avalanches: R3 D3 bordering on R4 D4 on southerly slopes that had received storm snow and warmed under mid-day sun. R1 D1 warm point releases on upper ridge where temps remained cool but sun poked out. Larger slides appeared to be from the weekend or following rain cycle of 20/21 Mar. Cornices popped when dropped (big cornices locked, dropped, and then popped like a cheap rap video), but did not trigger storm snow on sheltered N/NE/E slopes. Rime and wind impacted snow on safe ridge aspects, sketchy, large, hollow sounding cornices on leeward, depositional aspects.

March 27, 2017, 11:30 a.m. PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by Paul Przybylowicz

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: climbed onto Mazama Ridge, just east of Edith's Rib

Route Description: Lower angle terrain, moderate tree cover, ascended just past 4th bridge

Weather: sunny, overcast, snowing, variable

Snowpack: 82 cm of snow on top of solid melt-freeze snow. Ski penetration was 15 cm, boot penetration was 50 cm. Top 40 cm slid on shovel tilt test, Q2. This was all the snow from the recent storm cycle. Density of snow increased with depth, right-side up. Some wind slabs near ridge top. Lower snow pack well bonded to M/F snow. Surface snow was fairly moist snow and it was cohesive. Skiing was ok...plowing the Cascade potatoes.

Avalanches: Saw numerous small wet loose releases on steeper slopes, either from rock faces or trees releasing snow. Resulted in roller balls

March 26, 2017, noon PST

Region: East Slopes Central - Lake Chelan to South of I-90
Observation by Filipp Demenschonok

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Seen from the Hidden Couloir on Dragontail as we were descending from a climb.

Weather: Whiteout conditions so hard to see clearly how big it was.

Avalanches: Seen on west side of Aasgard Pass. Looked like a R2D2.5

March 24, 2017, 6 p.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90
Observation by Ingo Dusseldorf

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: Bowl above chair four outside Mission Ridge boundary.

Route Description: Skinned looker's right of the patrol cable trams above chair four.

Weather: Windy, mixed clouds, sun, rime. Cold on the ridge, spring at 4200'.

Snowpack: Poor bond between new snow (~12" wind impacted) and rain crust (21-22 MAR). New slab would fail and propagate upon isolating skin track on switchback.

Avalanches: Booted up the ridge safely and then descended to ski cut on a ~40 degree rollover. Cut triggered a serious but manageable R2 D2 on the rain crust. Ran 50+ meters and was 60 m wide.

March 20, 2017, 10 a.m. PST

Region: Snoqualmie Pass
Observation by Rich Feffer

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Chair Peak Basin

Avalanches: Likely most from the Saturday warming/rain -- Lots of slide debris in Source Lake and Chair Peak basins mostly loose wet debris with the exception of one large slab avalanche that ran from high on the face with a 3'+ crown

March 19, 2017, 3:40 p.m. PST

Region: East Slopes North - Canadian Border to Lake Chelan

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: A quick heads-up to a random, massive and destructive size 3.5+ natural avalanche we witnessed on the upper alpine zone of Ruby yesterday. It was triggered by a massive, natural cornice release/pull-out, which triggered a 400-yard+ wide hardslab avalanche that raked the entire upper mountain. It ran all the way down to and through the treeline, including the lower-mid elevation gully feature often ski (it stopped just above the "choke"). The slide ran over ~1400' vertically, and a far greater distance laterally. The power, scale and destruction-potential of this avalanche is hard to describe. Debris chunks the size of Sprinter vans... Hard to capture this in one photo attachment. We were at the top (on the SE sub-summit, SE of standard low point in ridge) of our second run when we observed the entire avalanche, start to finish, including the initial (natural) cornice fall that triggered the slide. This was not a skier trigger. All of our lap-#1 ski tracks and our skin track were completely obliterated. The crown fracture face was between 7'-25' tall; more where the triggering cornice failure face is included. We had a difficult time even getting over/off the crown fracture (~7' high; a necessary free-fall drop to the icy bed surface) in order to get off/down from the summit ridge. Amazingly, nobody was buried, injured or killed, all very likely/possible had the timing of our (or other's) ascent/descent been any different. There were also two other touring parties on the lower alpine zone at the time of the avalanche; two skiers were almost engulfed by the debris fan had we not yelled down to them as the avalanche started. I would say that Ruby is completely done for the season. The entire "money run" from the summit ridge is nothing but debris and/or solid-ice bed surface at this point. One would need technical ice tools to get over the crown face, and to travel across the icy bed surface. I am trying to grapple with how to report and share this observation. It is by far the biggest natural avalanche I have ever witnessed so posting seems prudents. Unless someone wants to do a proper bed surface investigation (or to snap proper photos), Ruby is a wasted trip at this point. Skiing ATL+ was good yesterday, but that's history now. This observation ties in nicely with recent blog post about cornice hazards. Yes, spring is here. PS - I would not make mention of this zone had the observation not warranted public awareness of a signifiant but random cornice concern.

Route Description: North approach/descent

Weather: 25F, mostly sunny, light E winds. A perfect day for the alpine!?

Snowpack: 24-hr storm snow (12"+ bone-dry pow), over supportable base, moistened by previous day's precip. Ideal skiing. Ski pen of 6"-16". Deeper snowpack not observed, except at crown face.

Avalanches: yes. from previous 24-hr rain-on-snow event below TL. Some recent (24-hr old?) small crowns in alpine. No sign of previous cornice failures. The avalanche we observed was of the low probability, extra high consequence variety.

March 19, 2017, 1:30 p.m. PST

Region: Snoqualmie Pass
Observation by Charlie Hagedorn

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Windy Pass environs

Weather: Sunny. Light to calm winds.

Snowpack: Pit to the ground at Windy Pass at about 13:30. NW aspect of a little rollover to expedite digging. Height of snow ~280-290 cm. Most notable feature was the large quantity of soft, wet 1F or softer snow in the top 150 cm. Pit photo enhanced to show structure, 5cm probe markings. CTH ~30 cm down. Initiated in an ECT on the same hard tap but did not propagate. 3-6mm dusting of graupel present at all elevations. It may have survived Sunday afternoon on shaded aspects.

Avalanches: Prominent crown on one of the eastern gullies of the S side of Granite. Toe of the combined slide path appears to have made it almost to the road this year. Shallow recent slides, perhaps from Sunday morning, on the E aspect of Humpback, close to Abiel, initiating from smooth rock slabs. The usual glide cracks, visible from I-90, are present, too.

March 19, 2017, 7:52 a.m. PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by Ted Sindzinski

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Climbing Mount St. Helens we spotted numerous signs of mid to large recent slides with precarious looking cornices throughout the mountain on western features. Also numerous, partially intact crowns around valleys from recent falls. Most notable was a massive debris field located to climber's right from the route, just around the end of the treeline (4,100 - over 5,000'.) This is depicted in the attached photo.

Route Description: Standard Worms Flow / Winter route with special attention to avoid terrain traps, cornice edges and any overhead exposure.

Weather: Blue bird day. Sun shining all day with little to no wind (no transport) and no preceip. Air temps below freezing but the sun fully softened snow by mid aftenoon.

Snowpack: Deep, persistent but softened under the afternoon sun.

March 18, 2017, 8 p.m. PST

Region: Olympics
Observation by Brian Carpenter

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Hurricane Ridge

Route Description: Obstruction Point Road from winter access point to Waterhole and back

Weather: A bit of everything: graupel, snow, sun, clouds, wind, temps cold to mild.

Snowpack: New snow cover varied from 1" to 5-6" depending on location. New snow wet and heavy. Consolidated snowpack underneath very supportive. Lots of snow blowing around, the tracks we created on our way out were almost completely covered in places on the way back. Giant cornices visible on the N/NE sides of the ridge.

Avalanches: None seen. Some loose wet sluff material present on SSW-facing slope at base of Steeple Rock

March 18, 2017, 3:33 p.m. PST

Region: East Slopes North - Canadian Border to Lake Chelan
Observation by SKIER-X , Scout , Recon , Routefinder,Guide consultant . "Intl. Man of Mystery"

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: Cuthroat and Delancy Ridge region , Hwy. 20 , NCH.

Route Description: S.E. fac. ascent , old growth , treed to summit . 10am-333pm. Decent S. fac. treed ribs. 6800'-4400'

Weather: Mostly cloudy and snowing 31.9 deg. 30min. sun break at approx. noon. Warming during the day . Treebomb shedding up to 5400' by 3:00pm. Increasing wind by 4:00pm.

Snowpack: 8"-10" new storm snow on firm supportable crust. Poor bond of storm snow to crust . mid day sun warmed new snow considerably at all elevation bands.

Avalanches: Ski cutting produced many slow moving wet storm slab releases on crust, at will , on any steep open terrain , rollovers , convex slopes on SE-SW aspects between 5000'-6000'in all elevation bands, except on treed ribbed features . Numerous large avalanches were heard throughout the day up in the Cuthroat Lake arena. Most of the Delancy ridge gulleys and feeder ravines and many open slopes avalanched the new storm snow , some very large .with trees and dirt .

March 18, 2017, 1:30 p.m. PST

Region: Snoqualmie Pass
Observation by Chris Simmons Pro Guiding Service

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Alpental Valley - Source Lake via low route / waterfall approach.

Route Description: Field day with an AIARE 1 course, toured up to Source Lake and the Rap Wall/No Fog zone for terrain identification and travel technique practice.

Weather: Moderate rain switching to moderate and heavy snow at 09.30-10.00 at 3500' elev. Snow rate varied throughout the day but remained constant.

Snowpack: As reported, old snow settled, moist, and reset. Friday night's HST was up to 8" at 3900' elev. Also at 3900' we observed a light rain crust aprox. 3" down that was not present at lower elevations.

Avalanches: Bryant Couloir (aka Wahoo Gully) ran R5 D3+ sometime since NWAC Pro Observations on Wednesday - Thursday suspected because of heavy rainfall and storm snow coverage. Unable to see start zone or track due to low cloud cover and weather. Debris and runout reached and entered Source Lake, stood over 2m deep and 100m wide. This is making the traverse out from Source Lake into the basin for the Snow Lake Divide skin track challenging. Multiple D1 loose wet slides between Little Annie's, Wall Street and the Mushroom Couloir have completely covered the winter skin track and will require care to travel through.

March 16, 2017, 3:33 p.m. PST

Region: East Slopes North - Canadian Border to Lake Chelan
Observation by SKIER-X

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Wa. Pass. Arena

Route Description: S. facing , 5400'-7000' Strenuous and demanding skiing .

Weather: Sunny ,occasional shade storms , S.W. wind 5-10mph. mid 20s in shade , warm in sun exposed .

Snowpack: Shaded areas dust on 2cm. crust over 13cm. wet rounded loose granulated over humid stellars . Sun exposed , fresh wet trace over soft disintegrated crust over rounds over stellars. Ski pen .20 cm. in sun. Wet exposures refreezing in afternoon shade .

Avalanches: All red zones from Cuthroat 1 to Libertybell 4 except for Spire Gulch have run , crossing hwy 20 . Deposition 15' to 30' Libertybell chutes ran across upper and lower hairpin road crossing. S. facing slopes show glide cracking and rollover slab releases on unanchored rock exposures. Entire snowpack runneled like elephant skin .

March 12, 2017, 2 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by Andy Traylor

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Mt Saint Helens - Worm Flows Area (South Side)

Route Description: Toured up from Marble Mt Snowpark, starting around noon. Crested out of the treeline and branched out east of the Worm Flows climbing route. Followed a few plateaus and ridges up to ~5000'. Generally skied the line of ascent, sticking to west aspects when possible.

Weather: Partly cloudy to partly sunny skies, warming throughout the afternoon up to 50 degrees F. Winds 0-10 mph from the west.

Snowpack: The snowpack was heavy and dense. Generally slushy and evolving into corn on solar affected aspects. Firmer with a supportable crust in shaded areas.

Avalanches: We observed numerous avalanches. The largest we observed was D3, R3 on an eastern aspect of a ridge. Crown height was estimated around ~2m at the peak, tapering to ~30cm towards the flanks. Propagation was ~100m across and it appeared to run several hundred meters taking out a few small trees towards the terminus. We also observed many smaller wind slabs on eastern aspects, often undercutting cornices. Cornice failure was widespread with large blocks (microwave to fridge size) breaking off under the weight of new heavy storm snow or rain on snow at lower elevations.

March 11, 2017, 11:33 a.m. PST

Region: East Slopes North - Canadian Border to Lake Chelan
Observation by SKIER-X

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Delancy Ridge vicinity .N.C.Hwy 20

Route Description: N.- N.W. facing 2800' to 6000'

Weather: Broken clouds , sun , Wind on ridge approx. 20 - 25 mph. from west. Above freezing at 2800 , 30 deg. @ 6000'.

Snowpack: Powder at upper 3500 ft. transitioning to heavy and wet at bottom. Boot top to occasional face shots . Lower elev. snow surface refreezing in afternoon . Up to 3' ski pole pen.

Avalanches: Many loose wet point triggering storm snow realeases , Starting from E.- SE high elev. rock and cliff faces propagating in width and running to valley floors. 100-200m. wide in deposition zones. This was the only aspect reacting. As common and wide spread as the eye could see. No visible crowns.

March 9, 2017, 11 a.m. PST

Region: Snoqualmie Pass
Observation by Aaron Miller

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: The Bluffs - Lower Alpental Back Bowls (Elevator Gate)

Route Description: Cutting from skier's left to right on a ledge between Elevator Shaft and the Ropeline gully

Weather: Snowing heavily at 33F with a slow warming trend since morning

Snowpack: 8" heavy storm snow on top of 2-3 feet of decreasing density snow atop the Valentine's ice crust

Avalanches: Triggered a D1 with a ski cut on a conservative angle (25-30°) on a knoll directly above Gib's Ledge. Slide released within the newest storm layer that fell overnight Wed -> Thurs. Slab propagated across the knoll, clearing it of new storm snow and depositing significant heavy debris 3-4' deep on the shelf beneath. Visual search indicated no tracks in the area, hasty beacon search revealed nothing.

March 9, 2017, 11 a.m. PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by Paul Przybylowicz

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Mixed trees, open areas, facing SW

Route Description: took skier's route to summer trail above lower switchback. Went up central rib on SW face of East peak

Weather: Cloudy, overcast, snowing lightly most of the day. Started colder, first temp at top 11 AM was -4 C, by third run at 13:20, temp was 2 degree, wind was picking up and it was snowing hard. Rain at trailhead

Snowpack: Dug down to Valentine's Day melt-freeze layer, 90 cm down.. Shovel tilt showed cohesion in top 20 cm of fresh storm slab, Q2 slide surface. Shovel compression failed at 13 on same layer. Snowpack generally right side up. noted some sun crusts in spots. Snow well bonded to m/f crust at 90 cm. First two runs were ok cascade powder at the top, third run was rollerballs on every turn. No slides triggered.

March 8, 2017, 7:30 a.m. PST

Region: West Slopes North - Canadian Border to Skagit River

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: SE and S aspects of shoulder of Mt. Herman, Bagley lake and creek area

Route Description: Skinning through the creek area from Heather Meadows parking lot

Weather: Snowing hard, breezy, flat light

Snowpack: Deep snow. Light unconsolidated 20 cm on top of a denser layer.

Avalanches: Skinning along the creek, could see a crown line on an east facing ridge down the lower 1/3 of the gulley. Light was so flat I thought it was a wind feature, and couldn't see a debris pile on the creek, where I expected it to be. As I got below the gully, on the other side of the creek, in was suddenly skinning on a crust, until then was knee deep. I looked to the slope beside me and then saw the debris pile, mostly buried in snow. It had run over the creek, and up the other side about 50m. Was spooky, so I hustled out of there. On the S aspect to lookers left of the usual skin track up Herman through the trees, was another pile of debris, mostly covered too. Hard to tell the size of either, because so much snow, and poor visibility. The second one seemed small, and just barely made it to the bottom.

March 5, 2017, 6 p.m. PST

Region: Stevens Pass
Observation by Matt Hartman

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Stevens Pass. 5,300 to 4,000'.

Route Description: Skinned from 3,800 feet to 5,300' and skied laps on N.facing trees, then skied south towards Mill Creek valley.

Weather: Broken skies, sporadic light snow, low winds.

Snowpack: South facing slopes has a slight crust from radiation and cooling at the end of the day. Hand pits showed 85cm of snow bonding to the 2/14 rain crust. There is a layer of rounding facets above the layer. Ski tests on steep slopes produced no results below treeline in open terrain. Ski quality is good above 4,600'.

Avalanches: South face of Lichtenburg had several D2 debris piles on steep slopes that were entrained.

March 5, 2017, 3 p.m. PST

Region: Snoqualmie Pass
Observation by Charlie Hagedorn

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Weather: Unexpectedly sunny and warm at Snoqualmie Pass today. Expected cold and light/moderate snow from the 3/4/17 afternoon forecast, came home sunburned and happy :). More detail here: http://www.turns-all-year.com/skiing_snowboarding/trip_reports/index.php?topic=38049.0

Avalanches: Loose dry on steepest slopes, as expected. Some solar-initiated loose sluffs, but less than one might expect from full sun.

March 5, 2017, 3 p.m. PST

Region: Stevens Pass

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? Yes

Area Description: Approx 2 miles east of stevens pass.

Route Description: Treed slopes and some open meadows

Weather: Mixed bag but not too warm

Snowpack: Sketchier than yesterday. Be safe out there kids.

Avalanches: Ridge top East facing slopes at around 5600 remotely triggered and skier cut failed to rain crust 3-4 feet deep. These exact slopesame were skied the day before with no propagation or signs of instability North facing treed slopes failed to rain crust 3-4 feet deep near 5600 feet away from Ridgeline or wind affect. Triggered by the second rider you go down the slope

March 5, 2017, 12:30 p.m. PST

Region: Mt Hood
Observation by Patrick Fink

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Tom Dick and Harry mountain

Route Description: NE-N facing slopes up to 35d

Weather: Overcast with occasional blue holes and skiffs of light snow, no accumulation or meaningful wind. Temps below freezing but with some greenhousing causing surface warming.

Snowpack: 15cm low density new snow over stout sun crust. Very few isolated wind slabs 3-4" at ridgetop which were stubborn and not a concern. Some sluffing on steep terrain but not entraining much snow. Evidence of significant warming 3-4 days ago with massive pinwheels sitting about. Good riding conditions with no active avalanche concerns. Plenty of snow available for wind transport.

Avalanches: None observed. Problem 1: Warming, did't reach active levels today. 2: Cornices, some quite large. 3. Wind slab: Small, isolated, stubborn. 4: Storm slab: Non-issue.

March 5, 2017, 12:30 p.m. PST

Region: Mt Hood
Observation by Ryan Nesbit

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: Elevation 4400', or 2/3 the way down from TDH ridge towards Mirror Lake,

Route Description: Ascended ridge on skiers left to TDH ridge. Skied down second gully

Weather: Clear, partially sunny/partially overcast, temps in mid-to-high 20s, winds: 3-5 mph from southwest on top of TDH ridge

Snowpack: Rain crust 5-8 inches below new snow

Avalanches: A skier was traversing across a 35 degree, north, northeast slope at around when she triggered what appeared to be a storm slab avalanche at around 4400', or 2/3 the way down from TDH ridge towards Mirror Lake. 5" crown, 8' wide, ran 40 feet down slope. Skier was the third of four skiers to ski that slope, but the first to traverse the top of the slope. Skier was not carried with avalanche, she stayed put above the slide. Rest of party had skied to safe zone and had visual of slide and skier the entire time. No injury or casualty.

March 5, 2017, 11 a.m. PST

Region: Snoqualmie Pass
Observation by Antonio Jenkins

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: Ridge dividing Kendall's NE Cirque (Silver Creek Drainage, aka Adventure Zone) and basin above east-most of the Kendall Peak Lakes.

Route Description: Standard approach to area through Kendall clear cut, then high traverse in above Lakes. Skied trees in south facing basin after snow pack assessment near start of north facing couloir.

Weather: Below freezing, light winds, mix of sun and clouds. Some light snow and graupel on and off.

Snowpack: Dug pit to below 2/14 crust on Northeast aspect near the start of steep slope at 5500'. ECT-P-10 @ 16", Q3. ECT-P-14 @ 30 inches, Q1.

Avalanches: D1, 100' long x ~24" high crown. Slab ran 400 vertical ft on clean bed. South facing slope in basin above east-most of the Kendall Peaks Lakes. Fracture was ~10 vertical feet below ridge and started at established skin track while party was in skin track. Skin track saw heavy use, 12 to 15 traverses by various parties, over a 1 to 2 hour period without event while various parties contemplated drops into the Silver Creek drainage.

March 5, 2017, 1:24 a.m. PST

Region: Snoqualmie Pass

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: West slopes under Chair peak. Wind lip feature with steeper aspect to the north.

Route Description: Chair Peak Circumnavigation. Ski decent from Melakwa pass to Melakwa lake.

Weather: Broken, Light wind

Snowpack: Sections of wind scoured and wind scattered surfaces.

Avalanches: Hard Slab, propagated approximately 100 feet down fall line. Crown was 4" at deepest points. Skier was able to escape out Middle of Path on their right.

March 5, 2017, 1:24 a.m. PST

Region: Snoqualmie Pass

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: West slopes under Chair peak. Wind lip feature with steeper aspect to the north.

Route Description: Chair Peak Circumnavigation. Ski decent from Melakwa pass to Melakwa lake.

Weather: Broken, Light wind

Snowpack: Sections of wind scoured and wind scattered surfaces.

Avalanches: Hard Slab, propagated approximately 100 feet down fall line. Crown was 4" at deepest points. Skier was able to escape out Middle of Path on their right.

March 4, 2017, 8:30 p.m. PST

Region: West Slopes North - Canadian Border to Skagit River
Observation by Austin Boese

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? Yes

Area Description: Mount Baker Backcountry

Route Description: Did laps dropping down to Swift Creek, then skinned up to Artist's point and dropped down near 10 minute trees

Weather: OVC-X, Moderate-Light Winds

Snowpack: New snow appeared right side up in a pit. Test results were CTM Q2 PC@30cm down, and a ECTX. Obviously though other things were happening deeper in the snowpack based on other avalanche reports. Pit dug on NE aspect @5,000'.

Avalanches: Viewed multiple recent D2 avalanches on Mount Herman South Side, some with what appeared to be quite deep crowns from a distance. Talked to one party who said one avalanche was remotely triggered and involved a partial and full burial.

March 4, 2017, 7 p.m. PST

Region: Stevens Pass
Observation by Matt Hartman---Northwest Mountain School

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Yodelin

Route Description: N. Facing Trees. Intro to AT course.

Weather: Broken to overcast skies. S-1 in the afternoon. Cool temps, light west wind.

Snowpack: 85 cm HST over a freezing rain crust. ETC did not propagate on N.facing slope at 5,000'. In this location, there was little faceting over the rain crust and rightside up storm snow.

Avalanches: none.

March 4, 2017, 6 p.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90
Observation by Chuck Cerveny

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: South and West facing slopes NE of Cle Elum at ~4000 ft

Weather: Cloudy with light winds and snow showers of varying intensity

Snowpack: Firm. Skiable but not by much. The new snow coming down formed absolutely no bond with the surface. Some small wind transport found on SE - E slopes. Unlikely to bury anyone but with the firm surface a slide through the trees is possible.

March 4, 2017, 3 p.m. PST

Region: West Slopes North - Canadian Border to Skagit River
Observation by Chance Philley

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Mt baker- shriebers meadow

Weather: Light snow the cleared for remainder of day

Snowpack: Very deep

Avalanches: Several. Appeared to be storm slabs about 3 foot crowns

March 4, 2017, 2 p.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90
Observation by Nick Webb

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: Red Mountain near Salmon la Sac, From the highest point of Red Mtn to the North along the ridgeline

Weather: Calm, Light Snowfall, Overcast

Snowpack: 25 cm of light density snow on top of 25 cm of medium density, weak layer identified at approx 50 cm, 10 cm of 1 finger hardness snow on top of very hard ice crust at 60 cm. Snowpit results consistently pointed to weak layer at 10 cm above ice crust.

Avalanches: While climbing on low angle slopes NW of the highest point of the Red Mtn ridgeline, we remotely triggered an R5 D3 avalanche on the W SW slope of Red Mtn. The crown was 60-90 cm and 300 m across, crossing from gully to gully. It ran full path at approx 300m. We dug a pit on a similar test slope and found the weak layer to fail at ECTN13. An R2 D2 avalanche was also observed on a N NW slope in the drainage West of Red Mtn. Most likely remotely triggered by snowmobile.

March 4, 2017, noon PST

Region: East Slopes Central - Lake Chelan to South of I-90
Observation by Pete J

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Near Mt. Cashmere , ENE aspect, 5000-6500ft.

Snowpack: 40-50cm above Feb. 14 crust. Two clean easy shears in top 30cm. Failed on crust, CTE Q1 @50cm. Easiest shears I've seen in a long time.

Avalanches: Debris evident from yesterday's warm up. Large cornice failure triggered widespread 50cm slab below, R3D2. There were other groups in the area but assume this was natural sometime this AM. Another party remote triggered a small terrain feature causing an R1D1 slide aprox. 20m wide and 30m long.

March 4, 2017, noon PST

Region: East Slopes Central - Lake Chelan to South of I-90

Elevation: Above treeline

Aspect: SE

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: Witnessed a slide near Scatter Creek in the Salmon La Sac riding area. The two of us dropped in to a southeastern facing bowl. After about two minutes after reaching the bottom of the bowl the slide released. We were watching and able to get to safety. The crown was 2-2.5ft deep and started from above and lookers right of our drop. There was another group of five that arrived minutes after it happened. We decided to head back out the way we came and we warned them not to continue. They did not listen and I hope they are home safe tonight. One of the guys in the group of five was from Ellensberg. I will send pictures in an email and a google earth pin of the location.

March 4, 2017, noon PST

Region: Stevens Pass
Observation by Denis DuBois

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Union Gap

Route Description: Union Gap

Weather: Mostly sunny to partly cloudy; few scattered flakes late in the day.

Snowpack: 30-50 cm new overnight snow. Right side up and very stable. Even though skiing wasn't as good on S aspects in the sun, the snow stayed put underfoot.

Avalanches: From US2 after 16:00 we noticed 2-3 instances of very small, isolated, shallow sluffs initiated by tree or rock point releases in the sun. Even 10+ snowmobiles playing above Smith Brook hadn't kicked off anything.

March 4, 2017, 11:30 a.m. PST

Region: Mt Hood
Observation by Patrick Fink

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Canyon east of zigzag that I erroneously refer to as little zigzag.

Route Description: West from timberline, crossing little zigzag canyon below treeline. Dropped into last big canyon before zigzag proper, skied a variety of aspects. Skiing was either grabby/punchy crust with inverted new snow, or nice inconsolidated new snow over crust.

Weather: Overcast w/occasional blue hole, temps near but below freezing. Light to no wind from the west. Snowing S2 rimed dendrites and grauppel for about 30 min at 11:30 before becoming S1-.

Snowpack: 4-10cm dense new snow over suncrust of variable thickness by aspect. Leeward aspects (E) had a supportable crust with thinner less consolidated new on top. Windward aspects and areas directly wind loaded had thinner crusts and most consolidated new snow. No cracking, collapsing, or other signs of instability observed.

Avalanches: None observed. Impressive cornices present on the usual aspects, no natural cornice fall observed.

March 4, 2017, 11:30 a.m. PST

Region: Olympics
Observation by Sean Halberg

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Maggies main face

Weather: Blue sky with some clouds

Snowpack: At least a foot of new powder in this area, on top of what was probably (typically) very windblown.

Avalanches: Very large avalanche on main big face of Maggies. 1' crown, 100 yards across, falling at least 100' of elevation. Also I saw a smaller avalanche on the far skier's left zone of Sunrise and heard of another.

March 3, 2017, 7 p.m. PST

Region: Stevens Pass
Observation by Matt Hartman----Northwest Mountain School

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Yodelin.

Route Description: Skied North facing trees from ridge-top to 5,300 to 4,600 for several laps.

Weather: Light to moderate snow all day, overcast skies, light winds from the West. Temps hovered just below freezing.

Snowpack: Storm snow from the last week is between 40-80cm deep depending on elevation. It has consolidated into a warm, thick slab and is bonding to the last rain crust. PST and ETC showed no results on that layer. Pinwheels on steep terrain and tree-bombs were the main hazards below treeline on 30 degree slopes. Ski quality is good, but snow is heavy.

Avalanches: None observed.

March 2, 2017, noon PST

Region: Stevens Pass
Observation by alasdair turner

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? Yes

Area Description: Trees on ridge to lake Ethel

Route Description: Turned around due to instabilities in snow pack. skiing was mostly shit.

Snowpack: Highly wind affected at all elevations

Avalanches: Very small wet slides down low started by roller balls. Cracking and wumphing up higher.

Feb. 28, 2017, 6 p.m. PST

Region: Stevens Pass
Observation by Matt Hartman

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: Skyline

Route Description: N facing Bowls, Moonlight, Stormies.

Weather: Cool temps, light to mod. West winds, light snow. Clearing skies.

Snowpack: About 60cm of cold snow over the last crust. Saw very little windslab development in the immediate area at ridgetop. Ski conditions were excellent on all aspects and elevations encountered.

Avalanches: Small D1 dry-loose on steep (40 degree rolls), Saw a D2 debris pile on South face of Lictenberg on the drive home.

Feb. 28, 2017, 6 p.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90
Observation by Nate H-S

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Skied northerly and easterly sidecountry around Mission Ridge.

Route Description: Wind slabs building up high from rapidly transporting Sunday-Monday snow, especially on sheltered northerly aspects below treeline. Strong prevailing westerly wind. I was able to get roll-overs to release on microfeatures, but stuck to skier compacted areas and managed terrain to avoid suspect slopes.

Weather: Windy and cold from 5k' upward. Sunny mid-afternoon, nuking wind and blowing snow by 8pm.

Feb. 28, 2017, 3:30 p.m. PST

Region: East Slopes North - Canadian Border to Lake Chelan
Observation by Jonathan Roatch

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: Wenatchee bowl, exiting a chute near high center in the bowl.

Route Description: Entering the bowl out of a chute.

Weather: Partly cloudy, sunny. Moderate winds

Snowpack: About one foot of soft fresh snow on top of a hard crust

Avalanches: Triggered three small, non-destructive, fast slab. Various widths. About a foot deep, on top of the hard crust. Didn't take the time to find more info. Triggered with mild ski cutting, and two completely on accident while traversing out of the chute.

Feb. 27, 2017, 2 p.m. PST

Region: Snoqualmie Pass
Observation by jacob Mandell

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: On the divide between thunder creek and snow lake at 4650 on a west aspect.

Route Description: skied the slot via SW side of snoqualmie mt, exited via snow lake.

Weather: moderate snow, 25 degrees, light wind.

Snowpack: 18 inches of unconsolidated of low density snow on firm crust.

Avalanches: Triggered a small soft slab on west aspect at 4650 near ridge line. 8 inches by about 20 ft. D1

Feb. 27, 2017, 2 p.m. PST

Region: Snoqualmie Pass
Observation by jacob Mandell

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: On the divide between thunder creek and snow lake at 4650 on a west aspect.

Route Description: skied the slot via SW side of snoqualmie mt, exited via snow lake.

Weather: moderate snow, 25 degrees, light wind.

Snowpack: 18 inches of unconsolidated of low density snow on firm crust.

Avalanches: Triggered a small soft slab on west aspect at 4650 near ridge line. 8 inches by about 20 ft. D1

Feb. 27, 2017, 1:15 p.m. PST

Region: Mt Hood
Observation by Heiko

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Bird Butte/Barlow Pass

Weather: Snowing, S1. Obscured sky. Strong gusts with ongoing wind transport. Apprx 25F

Snowpack: 4900 Ft SW aspect. 30' slope Study pit depth 130cm CT14 @90cm Q2 with clean shear CT22 @ 40 cm Q3 on MFcl grains

Feb. 26, 2017, 12:19 p.m. PST

Region: Snoqualmie Pass

Elevation: Near treeline

Aspect: S

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: we were touring on snoqualmie mt. Around the upper treeline we noticed short propagation with light jumps in the upper layer that was a several inches thick. A quick test with ski poles (2ft square) revealed springy layer falling off the lower rain crust easily.

Feb. 25, 2017, 2 p.m. PST

Region: East Slopes North - Canadian Border to Lake Chelan
Observation by Andrew Philbin

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? Yes

Area Description: Silver Star Glacier and adjoining ridge running roughly SW/NE from E flank of Silver Star Creek.

Route Description: Toured roughly SSW up ridge just E of Silver Star Creek, then took NE/SW running spur of ridge to access Silver Star Glacier. Skinned up glacier to ~300 vertical feet below saddle at top, N of peak, then skied down and out Silver Star Creek.

Weather: Sunny and breezy from highway, then windy with gusts ~30mph from WNW on ridge, then from W or WSW on glacier.

Snowpack: Wind-affected snow prominent on lee (S) side of ridge and on glacier proper. Mostly ~2" thick wind 'skin' with slab characteristics over looser snow, with some deeper wind loading/slab evident in areas on ridge. On glacier, mostly firm wind-affected snow. Crust (likely from 2/14) underlies snow ~12" deep in most places; snow mostly seemed well-bonded to crust.

Avalanches: One small ~50ft long point release buried me to shin level ~300' below saddle on Silver Star Glacier. Point of origin was steeper rocky section in middle to looker's right below saddle. Suspected trigger was small cornice fall or other source of impact perhaps mitigated by wind, but visibility was too poor to verify. Consistency of slide snow was slab-like, firm wind-affected but slide itself clearly wasn't a slab release. No further propagation occurred and snow on glacier otherwise seemed fairly stable.

Feb. 24, 2017, 7 p.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90
Observation by Matt Hartman

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Dirtyface.

Route Description: Skied East facing trees and SE rib to parking lot.

Weather: Cleat skies, no precip, temps below freezing.

Snowpack: Surface hoar is large and widespread on shady aspects above 5,000'. Weak faceted snow above a crust on surface (10cm). Ski quality in the shade is good. Crusts on solar aspects.

Avalanches: Wet snow avalanches on solars from probably 48 hours ago or older.

Feb. 24, 2017, 11 a.m. PST

Region: East Slopes North - Canadian Border to Lake Chelan
Observation by Zachary Winters

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Hairpin Valley

Route Description: Skied Poster Bowl via standard route, opting for western alt. route at head of valley

Weather: Broken clouds, mid-low 20's, <5mph winds, no precip.

Snowpack: 30cm medium density powder, well bonded to underlying firmer snow. Cornice collapse did not produce slab avalanche.

Avalanches: (see attached image) A large cornice failure at 7600ft impacted slope below (NW aspect, very steep), failing to produce a slab avalanche. Significant loose-dry entrainment travelled to the valley bottom, crossing a popular skintrack at 6300ft. This event occurred after 3pm 2/23.

Feb. 23, 2017, 11 a.m. PST

Region: Stevens Pass
Observation by Ross Macfarlane

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Open and treed slopes on SW aspect of Lichtenburg

Route Description: Planned ski tour up SW aspect of Lichtenburg, ascending rib lookers right of Lake Valhalla. After digging snow pit and concluding that there was deep instability, skied down and skied up trees near Valhalla.

Weather: Cloudy, snowing lightly. Temp low 30s

Snowpack: Dug snowpit at 4000 feet on SW slope at approximately 30 degree angle. 3-5 c of soft snow on heavy rain crust from recent storms. Softer hollow feeling snow at 30 c and 60 c. First column test failed at 30 c after 2 light fist taps. Second column test failed at 60 c with no pressure or taps. Solid cohesive block with clear plane. That and evidence recent crown fractures made us decide to stick to trees and lower angle terrain.

Avalanches: Several crowns and avalanche debris, likely from last rain cycle.

Feb. 22, 2017, 3 p.m. PST

Region: Snoqualmie Pass
Observation by Matt Primomo

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: Source Lake area

Weather: S-1, low clouds coming and going during the afternoon, no wind.

Snowpack: 5-10cm new snow of F hardness consisting of rimed stellars and graupel over a 4F hardness storm layer from 2/20. This layer had become crusted over up to about 5000ft, making for a somewhat punchy feeling snowpack. Failures were below this 2/20 layer on drier (F+) old snow, all above the Valentines day crust.

Avalanches: Intentionally triggered 2 small, steep pockets (D1) up to 20cm deep x 8m wide on S to NE aspects above 4500ft.

Feb. 22, 2017, 1:40 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by Garth Ferber

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: East Peak

Route Description: Climbed southwest side of East Peak, 1 run into Cement Basin, descended south facing slopes to Bullion Basin and return.

Weather: Partly sunny, light winds, cool, increasing cumulus and less visibility in the afternoon.

Snowpack: We kicked several small chunks of cornice onto a northeast slope into Cement Basin no results. A pit on an E aspect at 6500 ft in Cement had 33 cm of increasing F snow over 8 cm of 4F snow on the 2/14 crust. CTM RP at 18 cm at a storm layer and CTM RP on the 2/14 crust. Good skiing including on the south facing slopes into Bullion Basin.

Avalanches: Nope.

Feb. 22, 2017, 10:33 a.m. PST

Region: East Slopes North - Canadian Border to Lake Chelan
Observation by SKIER-X

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Liberty Bowl , Wa. Pass. N. facing aspect . 1/4mi. west of Blue Pk. cornice , at base of cliff bands and wind loaded snowfield interface.

Route Description: Viewed from Liberty Bell N.W. ridge , 7200' on 2/20/17

Weather: Broken clouds ,25 deg. Lt. wind. good visibility.

Snowpack: 12" powder well bonded to firm supportable crust .

Avalanches: Liberty Bowl , R3 D3 , 200m. wide X 4-6' deep , running 300m. leaving car size blocks in deposition. Exact date of event unknown.

Feb. 21, 2017, 12:30 p.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90
Observation by Jamie Tackman

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: Squilchuck state park

Route Description: North west exposure one mile north east of the park. ~3500'

Weather: Scattered high clouds, temperature above freezing, trees dripping on sun exposed aspects.

Snowpack: 15 cm of one day old snow on a bullet proof rain crust. The new snow came in warm and cooled as the storm progressed. All considered the new was fairly well bonded to the rain crust but the warming conditions over came the bonding on steeper terrain.

Avalanches: Skiing NW aspect slope in the 32/35 range, with no reactions, but as we dropped onto steeper 35/40 slope we released wet slides that followed and possessed enough snow and energy to take you for a nasty ride. They were slow enough that it was not difficult to manage. In the area we skied slopes of 30 or less were un reactive..

Feb. 20, 2017, 11 a.m. PST

Region: West Slopes South - South of I-90 to Columbia River

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: East Peak at Crystal Mountain, 35 degree pitch 5700 ft of elevation just below tree line

Weather: Snowing heavily, light winds, temps just below 30 deg?

Snowpack: 4-12 inches of fresh snow on a hard heavy crust, pit test showed an obvious layer with well bonded consolidated snow underneath the newest layer

Avalanches: 1 triggered as we were skinning across a small clearing in the trees. 12 inches deep, 20 ft(?) wide, ran slowly until it hit a crop of trees about 15 yards below us. Pitch was 35 degrees in this clearing, lesser angles had been unresponsive to cut tests.

Feb. 19, 2017, 2 p.m. PST

Region: Olympics

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Avalanche chute on winter route to summit of Mt Ellinor

Route Description: Lower trailhead - lower Mt Eleanor Trail - Avalanche Chute. Returned via upper trailhead and FS 2401.

Weather: Snow all day, light winds out of the south. Significantly more snow fell than originally forecast. Heavy, wet snow with high water content at lower elevations, varied snowfall above 4000'.

Snowpack: Rain crust very evident along lower trailhead. 12-18" of new snow fell at higher elevations between 0800-1600 local time. Snow type varied all day between grapple to large, wet flakes.

Avalanches: During climb up avalanche chute, noted significant change in snowpack stability. Small fractures with 2-4" "crowns" were noted beginning at 4800' and increasing in frequency, size, depth, and propagation as elevation increased. Estimated new snow 12-18" of new snow on top of existing rain crust. New snow bond to the crust was more cohesive below 4000', and significantly less bonded at higher elevations. During transition to exit the chute after observing increasing signs of instability, witness multiple sluff avalanches with 6-8" crowns triggered by snowfall from tree limbs on unsupported slopes. Fractures and some propagation noted during descent, but no significant stuff or slab movement occurred. Later afternoon snow was significantly heavier and stickier than snow quality observed before 1200.

Feb. 19, 2017, 1 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? Yes

Area Description: South face of Helens.

Route Description: usual worm flows winter route from marble mountain. having crossed chocolate falls, and following the trail markers, we had ascended the left (climbers left) worm flow per the most direct route.

Weather: heavy snowfall, not too wet.

Snowpack: layers felt well consolidated other than the next snow that was occurring.

Avalanches: On worm flows route following the left worm ("bad worm") we triggered a moderate wet slow moving avalanche at ~4600-4800 ft (I think, I forgot to check my altimeter) while climbing on skis/skins. Occurred as we were traversing from the windward side of the rocks (leward side had a cornice and visibility was very poor so we had moved to windward side for safety). Avalanche occurred as we neared the top of the rock ridge/worm flow and were traversing climbers left in to the basin. We could see a 4-6 inch crown where the avalanche started 10 feet above and climbers left of us originating from the leward side of the ridge left of us, but it extended up out of site (white out) and rightward (northeast) in to the flat "headwall" that connects that left ridge and the worm flow ridge just before you pop out on to the higher plateau, so it may have been larger higher up and out of site. I say this because there was enough snow to bury me to my waist, and my partner to his armpits. Of course this was in the heavy snowfall that was occurring on sunday. we knew there was some risk, were carrying transceivers and gear, but thought we were far enough on to the windward slope that slides were unlikely. However, of note we were seeing 6 inch long cracks forming under the skies in the new layer even on windward slopes. We had not dug a pit on any of the slopes.

Feb. 18, 2017, 8:10 p.m. PST

Region: Olympics
Observation by Brian Carpenter

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Hurricane Ridge area

Route Description: Obstruction Point road, winter TH to 0.5 mile past Waterhole Camp

Weather: Cloudy all day, wet snow showers off an on. Temp about 35 all day. No wind.

Snowpack: 1-2 cm of new wet snow on top of the rain crust from the previous week

Avalanches: Debris from a decent-sized loose wet slide encountered on the WSW slope of Steeple Rock. Release point not identifiable, but somewhere above the road/route and just below Steeple Rock. Track and debris crossed the road/route. New snow on the debris, so I'd guess it happened Wednesday or Thursday.

Feb. 18, 2017, 2 p.m. PST

Region: Stevens Pass
Observation by Brian Olmsted

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Stevens Pass Grace Lakes area

Route Description: Cat track above Stevens Pass lot#4

Weather: 31 degrees light snow

Snowpack: Extended column test fracture initiated 20 cm deep on rain crust, ECTN 22 on slope less than 20 degrees. Test performed on NNE aspect at elevation 4485 feet. Liquid water seems to have drained from snow pack.

Avalanches: Some debris fields observed across valley on steep South aspects

Feb. 14, 2017, noon PST

Region: Snoqualmie Pass

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Phantom Slide/Phantom Trees

Route Description: Standard route up. skiers right to top of the phantom slide proper. skied in the trees down along ski track and into the slide zone below the bench to the top of the waterfall

Weather: Overcast. Warm.

Snowpack: Sun effected. Rain crust was ski supportable. No indication of instability with ski cuts in the slide. difficult skinning with poorly bonded snow (@ 1") on top of recent rain crust. bootpack variable with ice and deep penetration in some areas of the trees.

Feb. 14, 2017, noon PST

Region: Snoqualmie Pass

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Phantom Slide/Phantom Trees

Route Description: Standard route up. skiers right to top of the phantom slide proper. skied in the trees down along ski track and into the slide zone below the bench to the top of the waterfall

Weather: Overcast. Warm.

Snowpack: Sun effected. Rain crust was ski supportable. No indication of instability with ski cuts in the slide. difficult skinning with poorly bonded snow (@ 1") on top of recent rain crust. bootpack variable with ice and deep penetration in some areas of the trees.

Feb. 13, 2017, 2:30 p.m. PST

Region: Snoqualmie Pass
Observation by Matthew Cramer

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Great Scott Bowl/Pineapple Pass.

Route Description: Upper Alpental parking lot to Source lake, then up and traverse back under Bryant Peak to Great Scott Bowl.

Weather: 32 at the parking lot, mid 20's in the bowl.

Snowpack: 15-20cm of fresh snow sitting on top of a 5cm think ice crust. Crust was too thick to cut through with a shovel and couldn't be penetrated with a probe. Didn't have a snow saw, but used an ice axe to chop a pit. Without a clean cut upper wall, didn't perform a shovel shear test or extended column. Did a few CT tests on the top layer and found repeatable result of CT21, Q2. Slope angle was 25 degrees and snow temp was 23 degrees.

Avalanches: None. Also no hollow sounds or whumping from the snowpack and no visible cracks.

Feb. 13, 2017, 10:03 a.m. PST

Region: East Slopes South - South of I-90 to Columbia River

Elevation: Above treeline

Aspect: S

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: Multiple avalanches on steep slopes

Feb. 13, 2017, 8:33 a.m. PST

Region: East Slopes North - Canadian Border to Lake Chelan
Observation by Skier-X

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: N. aspect Patterson Mtn

Weather: Clear 15deg. calm.

Avalanches: Slab release , 8" crown , 50' wide , run 500 yds. to valley floor . 2nd. release in same area smaller. No anchoring leaving vegetation and ground exposed.

Feb. 12, 2017, 7 p.m. PST

Region: Stevens Pass
Observation by Matt Hartman---Northwest Mountain School

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Yodelin.

Route Description: Skinned up the East Summit and Skied trees, then did several laps on the old ski runs.

Weather: Warm, Overcast, clearing to Scattered clouds. Light to Calm winds from the East. No Precip.

Snowpack: Last weeks rain crust has about 15cm of facets and isolated surface hoar in protected areas. The rain crust is mostly supportive, but will break on steeper angles. Below that the snowpack is rightside up above the 1/29 crust. Snowpack tests did not show signs of propagation at 5,000 N facing pit. Skiing is still good in shady, low angle terrain.

Avalanches: Saw many small Wet-Loose on steep SE-E slopes. Lichtenburg had several large Wet-Loose in steep terrain that could have buried a skier.

Feb. 12, 2017, 2 p.m. PST

Region: Snoqualmie Pass

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Alpental Backcountry - directly North of The Tooth.

Weather: Sunny, high of 35°F

Avalanches: Slab avalanche with large crown.

Feb. 12, 2017, 1 p.m. PST

Region: Stevens Pass
Observation by Jaime Pollitte

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Yodelin

Snowpack: RB2 40 degree slope NW aspect elevation 4360ft

Feb. 12, 2017, noon PST

Region: East Slopes Central - Lake Chelan to South of I-90
Observation by Nick Pope

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Dirtyface Mtn.

Weather: Sunny with a thin layer of high clouds. Winds were light from NW, only felt on ridgetop. Air temp was measured at 3.5 C at 11:20, 5400' on a SE aspect.

Snowpack: Below 4000' the crust from 2/9 was on or just below the surface. Above 4k', the 2/9 crust had up to 20cm new snow above it that was well bonded to the crust. Wind deposits, up to 40cm above 2/9, were unreactive. Above 5k' 2/9 was 1cm thick and Pencil hard. At 5800' on a SE slope I found a pair of crusts from mid-January down 100cm and 120cm. Between and below these are rounding facets. A thin layer of larger rounding facets at 100cm gave one CTH Q1 result, but a second CT and an ECT had no results. Sun was affecting the surface of S to SW slopes. SE slopes held onto dry snow and skied well. Tree drip made for poor conditions under canopy.

Avalanches: Signs of storm cycle avalanches but no recent avalanches noted.

Feb. 12, 2017, 11:30 a.m. PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by Denis DuBois

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Mt Rainier Nordic Ski Patrol near Paradise

Route Description: Mt Rainier Nordic Ski Patrol near Paradise

Weather: Overcast, W wind ~5, air 35F, at noon. No new snow in over 24h. Warming and clearing trend. We rolled a 14" pinwheel on the last run of the day.

Snowpack: Sensitive shallow soft slabs in new snow, as well as reactive interfaces deeper in the soft but cohesive snowpack. No propagation in an extended column test. Most of the shallower slabs had slid naturally in the past day and a half on any slope over about 35 degrees. (pit 1 elev 5750, aspect N, incline 37 deg)

Avalanches: Naturals on all aspects in the previous 36 hours. Mostly shallow, around 20 cm, which is Friday's new snow on top of a crust from mid-week warming. Some steeper slopes stepped down deeper. Today visitors were skiing the sliding beds and the slopes between slides with no further snow movement.

Feb. 11, 2017, 2:30 p.m. PST

Region: East Slopes North - Canadian Border to Lake Chelan
Observation by Ross Lindell

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Ridge separating Pine Creek and Cutthroat Creek

Route Description: East facing slope to ridgetop @ 6100'

Weather: Broken clouds with occasional light snow. 0-2 MPH winds out of the SW.

Snowpack: Observations @ 5200' on east southeast aspect. SH 235cm. No signs of wind transport in this area. Average of 60cm of new storm snow. CTM 22 @ 60 RP Q2. Light rain crust 15cm down up to 4500'.

Avalanches: None

Feb. 11, 2017, 11:30 a.m. PST

Region: East Slopes North - Canadian Border to Lake Chelan
Observation by Alexander Vasarab

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Methow Valley, NE aspect on the valley's edge, 1850'

Route Description: Returned to site of avalanches triggered yesterday to conduct a full profile in adjacent part of slope. The angle was estimated yesterday to be 30 degrees but measured today at 40!

Weather: Scattered clouds, calm, no precip, -2 C air temp, general warming trend

Snowpack: HS 75 cm, boot pen 70 cm. 75-42 cm down 1-1.5mm rounds, 42-26 cm down MFpc 2-3mm, 26-17 cm down MFcl 1.5mm, 17-ground DHcp 2-4mm. Attempted a CT on the layer that slid yesterday but got a CTV to ground on depth hoar instead.

Avalanches: None triggered, profile site was selected adjacent to two separate D1 slabs (triggered yesterday)

Feb. 10, 2017, 5 p.m. PST

Region: East Slopes North - Canadian Border to Lake Chelan
Observation by Alexander Vasarab

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: Methow Valley, NE facing slope on the W edge of the valley, 2000 ft

Route Description: From the Methow River, skinned up a NE aspect through thick trees about 350' to flats, traversed N-NW to a less densely treed area for a quick descent.

Weather: OVC, -0.5 C air temp, calm, NO/no precipitation

Snowpack: HS 80 cm, boot pen 80 cm, ski pen 30 cm. There was a distinct crust throughout the terrain; hoping to return and complete a full profile tomorrow for more info.

Avalanches: Signs of instability under heavy tree cover were limited to Q2 releases between skin turns, however, widespread whumphing was observed as soon as we entered more sparse forest. We were almost finished with our descent (on a logging road with 35 vert ft to go) when we encountered an 8m x 8m section slope lacking trees with an est. slope angle of 30 degrees. Descending this final stretch in skins on the flat road below the slope triggered the D1 slab, debris came to a halt on the flat road below. Continuing a few more steps triggered another D1 slab on an adjacent area of slope with identical characteristics.

Feb. 8, 2017, 4 p.m. PST

Region: Snoqualmie Pass

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: Big Trees area below Great Scott bowl

Weather: S1 most of the day increasing rapidly to probably S3-4 at 3 pm. Light winds up higher

Snowpack: Deep powder skiing

Avalanches: Noticed a large avalanche (3-4' crown) that released to ice crust, likely on Monday. The at least 200' wide crown was evident above cliffs lookers left of and extended above the Hummocks/Chutes and Ladders run in the Alpental BC. These slides seem to indicate the potential for deep wet slabs with the rain today. With the rapid snowfall in the afternoon, fresh 1-4" storm slabs became reactive.

Feb. 8, 2017, 7:30 a.m. PST

Region: Snoqualmie Pass
Observation by Chris Meder

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: SW slope of Snoqualmie Mountain

Route Description: Ascended through trees just west of the Phantom Slide Path, descended the open areas of the Phantom. Elevation range 3100-4800 ft.

Weather: Overcast, light snow, winds calm to light

Snowpack: Found tree cone evidence of settlement in agreement with the telemetry numbers reported (6 inches), though there is still a large amount of unconsolidated snow out there as expected. Ski pole tests went easily 100+ cms down to the pre-storm crust. Ski pen 30-40 cm. Snow surface is still light and transportable by wind.

Avalanches: We observed several recent D1-D2 avalanches (Monday or Tuesday morning?) initiated on steeper terrain features, most of which ran on the crust now down 100 cm.

Feb. 7, 2017, 6 p.m. PST

Region: Stevens Pass
Observation by Matt Hartman

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Stevens Pass Resort BC

Route Description: Skied N-Facing slopes to highway and S-facing slops to Mill creek. Kept the slope angle in open terrain around 30 degrees, steeper in the trees.

Weather: Skies becoming overcast, L-M East wind, no precip.

Snowpack: Dug a pit on a S- aspect at 5,700'. Snow pack is about 1 meter of storm snow above the 1/29 crust. It is settling and becoming more cohesive and mostly rightside up. An ETC test propagated clean and fast on the crust and facets above it (ETC 26 P down 100cm). It was a sudden fracture and was not reactive in compression tests.

Avalanches: None. No cracks or whumphs in the terrain we selected. The South Face of Lichtenburg had a D2 Slab release on S.Facing steep slopes that we saw from afar.

Feb. 7, 2017, 1 p.m. PST

Region: East Slopes South - South of I-90 to Columbia River
Observation by Bradley Gasawski

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Umptanum Ridge outside of Ellensburg, WA off Wenas Road.

Route Description: Parked near the Umptanum Falls trailhead. Skinned up towards the Umtanum Ridge and skied back. Actual location is

Weather: Sky was overcast with a light breeze.

Snowpack: Dug a quick pit at 3000 ft. Hs is 70 cm. Rain crust at 30 cm. Buried surface hoar at 47 cm. Hst is 22 cm. Shovel shear Q1 at 47 cm while cutting block. Experienced 5 different instances of whumphing. Whumphing with shooting cracks locally. Upon inspection of one such whumphing with shooting cracks, whumphing failure appears to be at 47cm where 2mm surface hoar was found. While the snowpack is shallow, it is close to home for me.

Feb. 7, 2017, 11 a.m. PST

Region: Snoqualmie Pass

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Big Trees - Kendall Area

Weather: Overcast

Snowpack: Unconsolidated light snow below treeline; slightly more dense above treeline; a storm layer exists ~1' below the snow surface in most areas. good skiing below treeline if you can avoid the treebombs

Avalanches: None observed, but we didn't spend much time in the alpine

Feb. 7, 2017, 9 a.m. PST

Region: Snoqualmie Pass

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: Phantom Slide path waterfall.

Route Description: Ascended climbers left of slide path via the trees with no issues. Noted 1 steep convex with 1ft crown with little runout in trees. Topped out at base of alpine region. Descended trees and slide path to waterfall which was not our normal route. Waterfall slid with entire storm snow onto previous ice crust during 2nd skiers descent. Nobody caught.

Weather: Calm, 22F, partly cloudy.

Snowpack: 120cm pole penetration, 1.5ft ski penetration on new storm snow. 50" received in previous 72 hrs.

Feb. 6, 2017, 3:30 p.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90
Observation by Mitch Pittman

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: Myself and two partners were touring out of the Scottish Lake High Camp yesterday afternoon up on McCue Ridge.

Route Description: Earlier in the day in that area, I noticed serious wompfing on the crest of the ridge, so we chose to ski an aspect more protected slope. We were right on top of a feature known as 'stegosaurus rock,' and after looking at the open objective slope right off the top and noticing it was too steep for conditions we opted to skirt to the right and drop in lower in a more treed slope. The slope was north facing.

Weather: About 20F, wind increasing, but didn't appear to be a factor. Close to 2 feet of snow had fallen in the previous 24 hours.

Snowpack: Nearly two feet of snow had fallen in the previous day. There was deep ski penetration - more than a foot. We didn't dig a full pit, but did pull a quick test slope and found the storm snow looked fairly stable. In hindsight, a full pit test likely would have revealed a bed surface or weak layer beneath the deep storm snow. The storm snow wasn't super light, but certainly wasn't heavy.

Avalanches: My two partners skied first through the trees. It was steep, but not open. I crossed over through some trees and triggered a small storm slab avalanche on a convexity. The first skier also skied over this, but didn't trigger anything. With my partners in speaking distance, but not within sight, and still in a steep zone - I didn't hang around to do a full observation. But it appeared to be about a 1.5-2 foot crown, 20-25 feet wide, running about 20-30 feet on a pretty darn smooth bed surface. I thankfully skied out of the very soft runout and found shelter behind a big tree, then checked on my partners. I wasn't trapped at all and everyone is safe, but wanted to report the instability. Happy to answer any more questions you might have. Thanks for all the work you do!

Feb. 5, 2017, 6 p.m. PST

Region: Stevens Pass
Observation by Matt Hartman----Northwest Mountain School AIARE 1

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Skyline Ridge

Route Description: Skinned up road, skied S. Meadows for a lap and headed up to ridgetop above the NW bowl. Descended to lake and meadows. Avoided avalanche terrain.

Weather: Overcast skies, light snow, calm winds all day. Temps hovered at -5c.

Snowpack: Rightside up above the crust from 1/29, but very weak 4F to F. 1/29 freezing rain crust was down 70-90 cm in pits on N facing slopes at 5,200'. Column tests showed propensity for propagation (ETC P 22 down 70cm on small facets above the crust. PST 50/100 end on the same layer). We felt several whumphs near Skyline Lake.

Avalanches: A ski cut on a 40 degree small test slope fractured nearly 3 feet deep and across 50'. On a larger slope this would have easily been a D2 avalanche and would have buried a skier.

Feb. 5, 2017, 2 p.m. PST

Region: Stevens Pass
Observation by Bill Waltke

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: The south facing back side of Yodalin, off of the ridge about 4600 ft elevation. The avalanche was triggered on a small open slope on a convex roll.

Route Description: Standard Yodalin meddow approach to south/backside of Yodalin ridge.

Weather: Snowing in the high teens/low 20s Fahrenheit.

Snowpack: Noted whumphing on the approach in open areas.

Avalanches: 25 ft wide with 2ft crown height. Triggered by second skier, first skier skied to safety. The avalanche was triggered on a small open slope on a convex roll. Angle of convex roll was 35-40.

Feb. 5, 2017, 11:44 a.m. PST

Region: West Slopes South - South of I-90 to Columbia River

Elevation: Below treeline

Aspect: SW

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Comments: Elevation of 5000 feet. Remote triggered storm slab that slid on consolidated crust. Crown depth of 30 cm to 35 cm. Ripped about 100 feet long.

Feb. 5, 2017, 11:30 a.m. PST

Region: Snoqualmie Pass

Elevation: Below treeline

Aspect: N

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: widespread naturals on steep terrain below treeline on all aspects. numerous d1 and d2 soft storm slabs observed.

Feb. 4, 2017, 3:30 p.m. PST

Region: Stevens Pass
Observation by Olivia Race

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Low angled old growth - more open W facing slope.

Route Description: Outer Limits Rd - Susan Jane Lake

Weather: S-1 to S1 throughout day. L winds

Snowpack: Hst = 35 cm over 1/29 MFcr, 1/17 IFcr down 65 cm Hs ~ 200 cm Ski quality is good though you could still feel underlying crust - particularly in trees.

Avalanches: Several natural avalanches size 1-2 observed on NNE slopes ~ 5000' during brief period of increased radiation and warmest temps of day (2:00 PM). Older natural D1 Storm slabs (this morning?) released in steep terrain on W facing slopes between 4800-5000'.

Feb. 4, 2017, 3 p.m. PST

Region: Snoqualmie Pass
Observation by Chris Simmons

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Trees and open glades up to 30 degrees

Route Description: Draft Dodger - Big Trees, via Source Lake winter skin track

Weather: S1 for most of the day. Winds calm. Temperature remained below freezing throughout the day.

Snowpack: +40cm on MF and IF crusts. Consolidation of new snow into a cohesive storm slab as forecasted not found throughout the day.

Avalanches: Several rider-triggered D1 observed at Sunshine, Mushroom Couloir, and Wall Street. Mushroom debris covered the skin/exit track. All appeared to be storm slabs on open steep NE slopes from 3800' - 4400'

Feb. 4, 2017, noon PST

Region: Stevens Pass
Observation by Denis Du Bois

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Yodelin west.

Route Description: Yodelin west

Weather: Snowing steadily all day

Snowpack: No slabbing observed. Fantastic new powder snow, 15cm-40cm depending on elevation; on firm base (a crust of sorts was evident at 3500 ft, softer with elevation, no longer evident at 5000 ft).

Avalanches: On 35-40 degree rollovers in ski tests we could kick off little dry loose sloughs that didn't run nor propagate. Any blocks early in the run were small and quickly dissolved into loose powder on the way down.

Feb. 4, 2017, noon PST

Region: Snoqualmie Pass
Observation by Sam Young

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: West face of Kendall Knob.

Avalanches: From the Chevron station at the pass I saw what appeared to be a naturally triggered storm slab on the west face of Kendall Knob at about 12pm. Visibility was low so no real photos, but there was an obvious crown on the high point of the knob. The slab release covered the height of the slope to the first plateau below.

Jan. 30, 2017, 7 p.m. PST

Region: Stevens Pass
Observation by Matt Hartman

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Stevens Pass Resort BC

Route Description: Skied N-facing bowls and chutes from 5500 to 4,000'

Weather: Increasing clouds all day. Light winds, temps hovered just below freezing.

Snowpack: The rain event from yesterday evening has laid down a solid surface crust and all elevations and aspects we enountered. Ski quality has decreased significantly.

Avalanches: None.

Jan. 29, 2017, 7:30 p.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90
Observation by Chuck Cerveny

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Skied in the Salmon la Sac area on the east side of Lake Cle Elum.

Route Description: Followed route using a combination of logging roads and cross country. Gained ridge then proceeded to summit

Weather: Foggy below 4000 ft. Sunny above. Clouds moved in around 12:30 and wind really picked up from the west as predicted. No precip

Snowpack: Super variable. North and some shaded aspects held really nice powder. Other-wise it was crust city, suncrust, wind crust, freezing fog crust. All with variable strengths. Did some hand shear tests on the way up and kicked at a couple kick turns. Nothing moved. Did notice a couple pinwheels low but they were older.

Jan. 29, 2017, 7 p.m. PST

Region: Stevens Pass
Observation by Matt Hartman--Northwest Mountain School AIARE 1

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Skyline Ridge

Route Description: Skinned up the road to Skyline Lake and skied NE Bowl. Ascended to the ridgetop and skied East facing glades to the PCT.

Weather: Inversion in am with East flow. After clearing this was very evident from snow on trees. Cooling trend with increased clouds and light winds shifting from East to West around 10am and becoming moderate in speed.

Snowpack: Rightside up in the top meter. The 1/17 crust is thick and had some rounding facets above, but was well bonded with the snow above. Pits showed resistant fracture character and no propagation. Ski quality in the shade was good.

Avalanches: Steep solars had small wet loose avalanches, likely from yesterday.

Jan. 29, 2017, 4 p.m. PST

Region: West Slopes Central - Skagit River to South of I-90
Observation by Olivia Race

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Jim Hill

Route Description: Approached via Lanham Lake to 6250' on ridge. Stopped short of top due to time. Skied and exited Henry Creek drainage.

Weather: Increasing clouds and wind through day. Moderate W winds @ ridge top in afternoon, S-1 in afternoon (lt. rain down low). Tree bombs became a concern as winds increased through the day. Very limited wind transport observed (not much available to transport).

Snowpack: Variable surface conditions! Upper bowl was wind effected but not terrible skiing, more sheltered area in the upper zone (NE) still held settled snow that skied well. E facing slopes lower down (~4500') had picked up a thin sun crust from 1/28. Below 4400' snow was heavy/warm. 1/17 IFcr was not easily discernible with quick probing in upper bowl.

Avalanches: Observed debris from two separate wet loose slides (D1.5) on steep E slopes under cliffs. Looked like they came down in last day or two.

Jan. 29, 2017, 12:30 p.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: directly below stuart glacier, at about 6000 feet

Route Description: due to poor routefinding choices, attempted to shortcut directly up buttress between gullies. Getting onto buttress required bootpacking up a ~100 ft 35 deg sheltered gullyish feature with hip-waist deep powder.

Weather: As forecasted, calm until ~10am, by mid day very impressive streamers coming off mt stuart. Overnight low barely below freezing at 5000 feet.

Snowpack: 1-2 feet powder on top of crust.

Avalanches: No signs of instability while booting up the sheltered/loaded feature, but while skiing down a trigger point was found ~15 feet climbers left of boot pack (4-5 inch crown visible at top of photo). Crown broke ~6 feet above skier. Triggering skier escaped onto snow-covered rocks at climbers right edge of feature. This was a very small avalanche: 4-5 inch crown, fractured slope about 50 x 150 feet.

Jan. 29, 2017, noon PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by Tod Bloxham

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: MRNP Paradise

Route Description: Edith Creek > South Face > Mazama Ridge

Weather: AM Moderate Winds, BKN and Warm; PM Moderate Winds, OVC, Cooling, S-1/S1

Snowpack: 310cm, 3cm crust on solar, dry blowing snow on north aspects (no crust); tests on SE-S-SW aspects: Shovel Tilt: 1mm facets @ 25cm creating very easy (SP before tapping) to moderate results (RP), CTM RP @25cm x5, ECTN; Good skiing on anything that was not solar aspect.

Avalanches: Wet Slab or Persistent slab x4 observed on SE 6000' slopes on what appeared to be 25cm layer. Texbook cookie cutter slabs. (3) on ~Friday (natural), 1x on Saturday (skier). Numerous other Wet loose and rollerball avalanches.

Jan. 28, 2017, 8:45 p.m. PST

Region: Olympics
Observation by Brian Carpenter

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Obstruction Point Road near Hurricane Ridge

Route Description: We accessed the Obstruction Point Road from the winter access point and followed the road about 3.2 miles, past Steeple Rock but before Waterhole

Weather: Windy, high clouds, some sun. Quite warm, 40 degrees if protected from the wind.

Snowpack: Some rocks along the ridge crest have been scoured of all snow. Saw in the distance that one of the southwest facing shoulders of Eagle Peak has been scoured to the ground. Cornices present along the east/north side of the ridge the road travels along. Overall variable snow surface: some surface hoar, some thin crust, some thicker crust, some loose wet snow. Windy and warm day, so the surface hoar may not last very long. Exposed WSW facing slopes along the route felt very crusty and dense. Lots of large pinwheels and rollerballs seen throughout the day.

Avalanches: Evidence of recent small sloughs & dribbles was seen on the WSW slope below Steeple Rock/above the trail/road route. Several chunks of snow (size range from basketball to sink) from these had reached the trail/road route.

Jan. 28, 2017, 3:30 p.m. PST

Region: Stevens Pass
Observation by Olivia Race

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Touring out backside Of Stevens

Route Description: Up to Christmas Pass

Weather: High clouds, light winds and noticible inversion (~5,000') throughout day.

Snowpack: 1/17 IFrc down 40 cms in elevation range toured (4-5,000'). Only had time for Compression test (CTH9 RP on 1mm FCxr above crust). Trees shedding remaining snow - rollerballs but not entraining snow on W slopes. W and N slopes still had good ski quality. Snow in old growth was a. It bombed but still skiing ok. No surface crust encountered in out limited touring area.

Avalanches: Few D1 wet loose observed on steepest roll in Highland Bowl.

Jan. 28, 2017, 2:30 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by Mike

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: St. Helens south side

Route Description: Worm Flow

Weather: High clouds early blocking most solar input; clearing and hot sun late in the day. The previous day 1/27 was clear and very warm upon arrival at 4000' around 15:00

Snowpack: Windblown powder from 8000' to 6000'. Below that the day was heating up fast and the surface snow was becoming weak and sticky, sun crust on still shaded solar aspects. Under the surface snow was a strong icy layer

Avalanches: small loose wet slides running on a smooth ice below 6000'. Other previous small loose wet slides observed in the area all D1. If the morning had been clear these would have been larger.

Jan. 28, 2017, 11 a.m. PST

Region: Olympics
Observation by Sean Halberg

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? Yes

Area Description: Backside of Maggies. Nordic nose. Popular backcountry skiing area between Hurricane Ridge and Mt. Angeles.

Weather: Partly cloudy with high clouds. 37 degree or so.

Snowpack: Icy crust on this SW aspect.

Avalanches: 6" crown, 100' wide.

Jan. 27, 2017, 8 a.m. PST

Region: Mt Hood
Observation by Alexander Vasarab

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Mount Hood National Forest

Route Description: Reid glacier, W aspect. Slopes between 35 and 55 degrees. Sandwiched between two ridges providing S, N, and NE aspects.

Weather: Scattered clouds, -7 deg C, no precipitation. Valley fog 1300-1500m. Light winds at 2700m, est. 25mph sustained SW winds at 3400m on ridge, but with no visible snow transport.

Snowpack: Boot pen on the glacier was up to 3 ft, rock on ridges had 2-3 cm rime ice originating from W. Lacked time for profile.

Avalanches: None observed

Jan. 25, 2017, 3:33 p.m. PST

Region: East Slopes North - Canadian Border to Lake Chelan
Observation by SKIER-X

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Driveway Butte Hwy.20 WA. South aspect

Weather: Sunny , cloud breaks , 25deg.

Snowpack: Sun affected on S aspects . Powder on protected N. aspects . Wind affected on or near ridges. Extensive XL tree bomb activity. Some 6' craters 2-3' deep. Danger ! Deeeep tree wells !

Avalanches: Multiple point releases from S. face ridge top , to the ground , running hundreds of yards. As well as a release to the ground on s. face road cut 1/2 mi. west of Early Winters reaching the rd. Also a 3' + crown release on a popular N. aspect run. Off hwy. 20 . Hopefully witnesses will file a detailed account. These slides appear to have occurred about on 1/23

Jan. 25, 2017, 2 p.m. PST

Region: Stevens Pass
Observation by Chris

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Jim Hill via Henry Creek

Weather: Overcast

Snowpack: Noticeable surface hoar layer on ~20cm of last week's new snow. Skied great, but good to note for future accumulation

Jan. 23, 2017, 2 p.m. PST

Region: Snoqualmie Pass
Observation by Alex Ford

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Route Description: Toured south-facing slopes below Pineapple Pass, commonly known as "F" bowl, then regained Bryant Col via Denny Creek and Melakwa lake. Descended Bryant couloir to return to Source Lake.

Weather: Calm winds and mostly clear skies throughout the day. We observed significant solar effects on South aspects and increasing near-freezing temperatures as the sky fully cleared between 10:30 and 12:00 while leaving the Denny Creek drainage.

Snowpack: Observed very thick, supportable rain crust on all aspects and elevations below ~15-60cm of consolidating storm snow. Snow depths were variable, with significant transport at higher and more exposed elevations. Solar exposed S-SW aspects were rapidly consolidating and producing significant wet point releases and increased sensitivity to ski triggering in exposed areas. N-NE aspects at higher elevations had less coverage, and appeared non-reactive to ski cuts. N-NE aspects above Source Lake in "Big Trees" area and below Bryant Couloir had more coverage and were sensitive to skier triggering in locally steeper areas.

Avalanches: We triggered two small ~D1-1.5 releases of consolidating storm snow on the thick crust on exposed, steeper, S-facing areas between 3.8k & 4.4k around 11:00 as solar effects increased. We subsequently observed several larger (~D2) natural releases from the S and SW aspects of Bryant Peak while gaining Bryant Col above Melakwa Lake. At ~4.2k below the Bryant Couloir we triggered a larger slide, ~D2 30-60cm depth 15-20m wide running on the ice crust in a locally steeper terrain feature. This entrained significant additional snow into a gully, which a skier was able to exit to avoid being caught. See attached photo.

Jan. 23, 2017, 2 p.m. PST

Region: West Slopes North - Canadian Border to Skagit River
Observation by jacob Mandell

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: 5000ft NW Aspect near Lake Ann

Route Description: Toured to Lake Ann area via Swift Creek.

Weather: Sunny and 29 degrees

Snowpack: Had snowed 6 inches in the past 24 hrs of light density snow, with some S and SW winds.

Avalanches: Triggered a 4-5 inch by 50ft windslab on a steep convexity roll over during a ski cut.

Jan. 22, 2017, 2:45 p.m. PST

Region: Snoqualmie Pass
Observation by Braldey Gasawski

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Route Description: Skinned back into Alpental Valley. Dug a test pit around 3600' on a south facing slope just below the Snow Lake trail.

Weather: Overcast most of the day with moderate to heavy snowfall until mid to late afternoon when it stopped snowing. Light winds were experienced at 3600' in the valley.

Snowpack: The new storm snow to reacted on small test slopes. I dug a pit on 25 degree south facing slope. Burped the Baby and got the storm slab over the 1-17 ice crust to react. Performed a CTE #3 Q3 11cm down. Continued the test to see what happens and got Q2 14cm down at #5, Q2 37 cm down at #11 and SC Q1 at 83cm down at #29. ECTN #4 12cm down. Continued test and got the layer 83cm down to react with no propagation at #30. Also, PST 35/100 (Arr) 83 cm down on rounded grains. It should be noted that at the interface 83cm down, the grain resistance and size went from P, 3mm (above) to 1F, 0.5mm (below). Rollerballs were present on many aspects.

Avalanches: A small R1 D2 wet slab across the valley from Alpental around 3400'. Just above the Snow Lake trail. Could see it from the main Alpental parking lot.

Jan. 22, 2017, 2 p.m. PST

Region: Olympics
Observation by

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: South aspect on Klahhane Ridge at/near treeline.

Route Description: Skin track from last turnout prior to the switchback trail to Klahhane Ridge summit east of Mt. Angeles. Traversed east and lapped southerly aspects before returning o the Hurricane Ridge Road.

Weather: OVC SN (S1 - PPgp) L-M winds from the SE Overcast with light snow showers throughout the morning. Total accumulation <1". High of low 20's. Light-moderate winds observed from the SE as forecast.

Snowpack: Cornices and wind loading observed on the north slopes on Khahhane Ridge at 6000' just east of Mt. Angeles. Stable snow observed on southerly aspects. No significant signs of instability observed. Snow pit dug on 45 degree slope with a southerly aspect around 5200'. CTV (SP Q1) during compression test: Thurs-Friday storm slab (mix of RG & FC) reaction during block isolation down to the rain crust (IFrc - 50 cm), presumably from last Tues-Wens rain-on-snow event. Suspect reaction due to significant cutting force required to isolate block for compression test at the rain crust level. Rain penetrated the snow pack from 50cm to well below 100 cm, leaving mix of IFil, MFcl and MFpc between 50-100cm. 12/17 PWL difficult to identify, appears to be bonding well into current snowpack.

Avalanches: Possible D2 activity observed on E-NE aspect IVO Sunrise Point; suspect slide occurred during forecasted avalanche cycle following rain-on-snow events last week.

Jan. 22, 2017, 11:30 a.m. PST

Region: Snoqualmie Pass
Observation by Jonathan Reeve

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: near treeline band, NE aspect

Route Description: Small shallow chute, 40°

Weather: Moderate snow, moderate wind

Snowpack: Dug pit on SE aspect at 4800ft, 30°, for CT had Q2 on tap #15 10cm down in current windslab. No movement on 1/17 crust at with any force, but still sheared on that layer when pulling the block. A bit lower, steeper and NE it released however.

Avalanches: I triggered R1D1 on entering a shallow ~40° chute with a 45° enterance. Propagated as a storm slab 20' wide by 20 cm deep, ran maybe 100m on very poor bond to 1/17 crust. Pit was exposed this was under old growth. Sent observation via app on 1/22 but doesn't appear to have stuck, app is buggy.

Jan. 21, 2017, 6:52 p.m. PST

Region: Snoqualmie Pass

Elevation: Near treeline

Aspect: N

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Comments: Some poor judgement resulted in us skiing a chute down to snow lake today. The chute ripped out and propogated a larger avalanche into the bowl. Skier rode away safely.

Jan. 21, 2017, 4 p.m. PST

Region: West Slopes North - Canadian Border to Skagit River
Observation by Jean Ruggiero

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Skied from heather meadows to the ridge above and to the west of lake Ann.

Route Description: Skied south facing bowl in the vicinity of the summer trail to lake Ann.

Weather: Cloudy with light snow in the am, clearing to mostly sunny around noon. Clouds rolled in again around 3 pm.

Snowpack: Wind slabs present on south aspects. North aspects were wind scoured. Many cornices on ridges in the vicinity of lake Ann.

Avalanches: Several from the last storm cycle before the most recent storm snow. Some natural avalanches since the most recent storm snow, slabs with crowns only a couple inches.

Jan. 21, 2017, 1:30 p.m. PST

Region: West Slopes North - Canadian Border to Skagit River
Observation by Douglas Ray

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Above chair 8, outside of the mount baker ski area. 4900' -5500'

Route Description: We booted up to a high point at 5500 feet, then dug a pit to satisfy our curiosity before descending.

Weather: Broken clouds with occasional sunny breaks, light snow flurries. Temperatures around freezing. No wind.

Snowpack: We dug a pit on a 30' NE facing slope. We observed a 15cm soft slab, that was reactive at blow 7 of ECT, with very poor shear quality (the layer fell apart more than slide off of the snow below) then consolidated storm snow down to a depth of 60cm, where there was a 3-5cm layer of hard frozen snow that we took to be the 17th rain crust. His layer seemed to be well bonded to the more recent snow and was not reactive to our tests.

Avalanches: There was a small avalanche on a steeper NNE slope at 5500'. It appeared to have had several ski trigger points and shallow crown (we estimated 6") so it was in the soft slab on top. Several other slides with shallow-looking crowns were visible in the area.

Jan. 21, 2017, 11:30 a.m. PST

Region: East Slopes North - Canadian Border to Lake Chelan
Observation by Drew Lovell

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Northeast Cascades

Route Description: Various

Weather: Active!

Snowpack: Warm ambient temps., particularly in the alpine, helped to strengthen surface snow prior to the arrival of significant precipitation on 1/17. In the Harts Pass area, a group of local skiers and I observed a very good bond between the old snow surface and incoming storm snow, accompanied by a strong cooling trend. A period of strong SE winds on 1/18 allowed for significant transport of the low density storm snow. It is noteworthy that we received approximately half of the storm snow of the WA Pass zone. Along the HWY 20 corridor, lots of trail-breaking and digging happened on 1/20, through 45-60cm recent HST. There is consensus in the community that the recent storm snow has a good bond with the old surface, as demonstrated by numerous CT's, with results ranging from none to RP. Ski cuts produced no results on the 1/17 crust. However, there is still uncertainty regarding weak faceted grains below the 1/17 crust, which produced some SC results in tests, and some localized collapse below skiers. This may be elevation dependent. Confidence in the Wind Slab Problem above treeline remains low, with very limited observations. Strong trail-breakers needed.

Avalanches: None observed

Jan. 21, 2017, 11:30 a.m. PST

Region: Stevens Pass
Observation by Michael Haugen

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: W-NW facing slopes to the east of Lanham Lake at 4800'

Route Description: Skiing Lanham Lake area. Observed cracking under skis while skinning in sparse trees above Lanham Lake to the east. Very easy hand shears on 1/17 rain crust.

Weather: Mostly cloudy

Snowpack: Located 1/17 rain crust at depth of 40cm. ECTN 7 PST 35/100 (end)

Jan. 21, 2017, 11 a.m. PST

Region: Stevens Pass

Elevation: Near treeline

Aspect: N

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: Toured yodelin. Dug 120 cm snow pit at 4600. Immediately found ice layer (IFil) @ 40cm. Deep tap test show layers starting to bond. DTH on N aspect. Snow below the ice form was very stable and strong. 20-40 cm new snow above IFil. Sky was overcast during the test and started to show signs of clearing around noon. Our extended column test was negative, ECTX. Overall good skiing. We used caution to stay off of south facing slopes. Visibility at the peak was 200 M. Heard others at skyline ridge was more in the DTM/DTE range. Confirmed ECTPV.

Jan. 20, 2017, 3:50 p.m. PST

Region: West Slopes North - Canadian Border to Skagit River

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Avalanches: Saw widespread soft slab avalanches with crowns 8-12" deep in the new snow. Triggered one avalanche on NE aspect, 5,200 ft, approximately 38 degrees. Approximate dimensions 10" deep crown, 50' wide, ran 75'. SS-As-D1.5-N.

Jan. 20, 2017, 11 a.m. PST

Region: Stevens Pass
Observation by Nick Pope

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: South of Stevens Pass, Lake Susan Jane area.

Route Description: Up old growth from Outer Limits.

Weather: Overcast and lightly snowing. Air temp -2 C. Winds east, light to moderate at ridgetop with light to moderate blowing snow.

Snowpack: Rain crust down about 40cm, about 1cm thick. Surface snow dry Fist + hardness going to 4 finger. Above the crust is 3-5 cm of very loose ice pellets. Extended column propagated on these twice at 11 and 12. Below the rain crust was well consolidated to 1m below surface in area 163cm of snow. Windslab forming on westerly slopes, previous loading onto east slopes.

Avalanches: There were a couple natural dry loose avalanches that were <24hrs old. These ran >200', with debris 15' wide and 2' deep involving the top 10-30 cm of snow. Started in steep areas, >35 deg, and came to rest on 30 deg slopes. Only D1, but consequential.

Jan. 20, 2017, 11 a.m. PST


Observation by Nick Pope

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Jan. 20, 2017, 11 a.m. PST

Region: Stevens Pass
Observation by Nick Pope

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: South of Stevens Pass

Snowpack: Apologies for the double post, but neglected to mention the tree bombs in the area. Many large tree bombs survived the warm up and are now solid masses of fear. Saw a few come down in the wind today and there many large craters under the trees.

Jan. 19, 2017, 3 p.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90
Observation by Nick Pope

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Blewett Pass, Diamond Head

Route Description: Up to Diamond Head via the north ridge.

Weather: A few high clouds and valley cloud deck to the north. Temps just below freezing. Trees dripping and solar slopes warming up but shady snow surfaces staying dry. Winds light from SW.

Snowpack: Area had 3-4 cm of new snow over a 2cm breakable rain crust. Crust slightly less pronounced with elevation gain. Wind deposits up to 10cm. Snow height generally 50-80cm. Lower pack consisted of facets up to 2.0mm. Main take aways: rain crust slippery and preserved under soft dry snow on shady slopes, lower pack still weak and worth watching as the new crusts are not a strong bridge.

Jan. 17, 2017, noon PST

Region: East Slopes Central - Lake Chelan to South of I-90
Observation by Jamie Tackman

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Mission Peak

Route Description: Summer trail

Weather: Snowing, temp. Mid 20ies wind 270 at 10/15

Snowpack: Just a quick report, looks like the temps did not stay above freezing very long. There was a light sprinkle of ice pellets in the powder snow. At noon, it was cold, and snowing lightly. There was an sun crust on south exposures, but in shaded areas, there was un altered cold snow. The snow that was accumulating was trending to the rounded ice pellet form.

Avalanches: Observed the Avalanche previously reported.

Jan. 16, 2017, 6:25 p.m. PST

Region: Stevens Pass
Observation by John Race (NW Mountain School)

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Toured today with AIARE L1 on Skyline Ridge. 4000' to 5500'.

Route Description: Up to Skyline Ridge, spent some time on North side and back down.

Weather: Broken sky in am and overcast late afternoon. 7F at pass with East wind and 32F at 5500 with no wind. No snow transport observed.

Snowpack: The strong local inversion is doing interesting things to surface hoar and surface facets. These are nearly absent or severely melted up high, widespread mid slope to 5mm, laying down near pass. Pits yielded no reactive layers or results. Windslab is less extensive than expected. 12/17 is down 80, 12/21 is down 60. Inversion was prominent from 8 am until 5 pm.

Avalanches: Numerous Wet Loose up to D2 on Lichtenberg on SW, S, and SE slopes originating around 5600 and running partial path to 4900. Only other signs of instability were pinwheeling between 4500 and 5500 on all solar aspects.

Jan. 16, 2017, 5 p.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90
Observation by Dan Veenhuizen

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Blewett Pass-Tronson Ridge-Diamond Head

Route Description: Toured from lower parking area up to Tronson Ridge, roughly followed horseshoe ridgeline to Diamond Head. Travelled over all aspects, elevation range from approximately 4-6,000'.

Weather: Sunny, calm winds. Notable temperature inversion around 4500' or so.

Snowpack: Average HS between 30 and 70cm. Some ridgelines are scoured to ground. Snowpack mostly consists of 4F and F facets and depth hoar. Solar aspects had developed a strong sun crust which was softening midday. Isolated areas near ridgetops had P windslab, mostly W-NW. Hand shears and ECT showed low cohesion facets, with lack of slab structure in sites tested.

Avalanches: No avalanches noted. Stability was good in areas travelled. Avoided slopes with hard wind slab.

Jan. 16, 2017, 11 a.m. PST

Region: Mt Hood
Observation by Aldis Raisters

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Ridge below Tilly Jame Aframe

Route Description: Tilly Jane ski trail to Aframe

Weather: Clear sky, large inversion. 5F at 3800 ft, tshirt weather by 4500 ft estimate at least 35 F

Snowpack: Indications of wind slab still present on NW aspects below treeline in exposed burn. Solar aspects SE already getting wet by 11 am. Dug pit at 5446 ft, NW aspect below tree line on test slope with wind packed snow. CT12 @ 12 cm Q1. Wind slab was still very reactive with a clean planar break on dry powder layer from 1/18 storm. See picture

Avalanches: No new avalanches, saw large crown from what appears to be natural release on NE face above 10,000 ft extending from above Elliot Glacier to over Snow Dome.

Jan. 15, 2017, 2:33 p.m. PST

Region: East Slopes North - Canadian Border to Lake Chelan
Observation by SKIER-X

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Wa. Pass region . 7500 ' peak .

Route Description: Ascended S. facing sparsely treed ridge to summit . N.E slope slab and wind affected snow . Descended S.- S.W. aspect. 7500'-5500'

Weather: Sunny , calm , distant clouds to S.W. 30 deg.

Snowpack: 7500' elev. , slab and wind affected on N.E. aspect. S-SW aspect ,wet surface lt. crust in shade over 6 - 12 " soft warming dense powder, wide spread surface hoar lower and in shaded non wind affected areas. Protected N. or shaded aspects holding powder.

Avalanches: Multiple point releases on S. W. faceing aspect in cutthroat 2nd bowl. Triggered from rock face warming , shedding , propagated at base of cliffs and snowpack interface, R1D2 , crossing Heli. skiers exit tracks. All tracks accounted for from my vantage pt. 250 ' ish run , 100 ' ish wide at deposition toes. Was unable to tell how deep from my distance across basin .

Jan. 15, 2017, 1 p.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90
Observation by Nick Pope

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Clara / Marion basin.

Route Description: Out again in the Mission Ridge area. Poked into a north slope.

Weather: Clear, calm, just below freezing at 5760' midday

Snowpack: Got a chance to look at a slightly deeper and shadier aspect than we dug in yesterday. On a north slope at 5760' we found 10mm surface hoar 45cm down. Test results on this layer included CTH Q2, ECTN 25, ECTP 27 and PST End 65/100. This location had less pronounced weak snow near the ground than E aspect looked at yesterday. Tried loading small test slopes with multi person loads no results.

Avalanches: Osbserved a recent natural avalanche from 1/2 mile away. It was at 6000' on a ~40 deg E slope. Looked like wind slab built of most recent storm snow. Could not see entire path but would estimate it R2D2, 40cm deep x 20m wide. Could only see top 30m of path with no debris visible.

Jan. 15, 2017, noon PST

Region: Olympics
Observation by Chris Morgan

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: SSE Face of Mt Angeles and N side of Klahhane ridge ~1mi E of Mt. Angeles

Weather: Sunny and Warm

Snowpack: We dug 2 pits Pit 1 (SSE Mt Angeles): 13cm CT12, 75cm CT23 13cm ECTN, 75cm ECT28 (Q1) Pit 2 (N Klahhane Ridge: 8cm CT11, 35cm CT24 8cm ECTN, 35cm ECT29 (Q1)

Jan. 15, 2017, 11:35 a.m. PST

Region: Stevens Pass

Elevation: Near treeline

Aspect: N

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: Location: yodelin Photo 1: Gruapel found 80cm idown Photo2: surface hoar development on N facing slope

Jan. 14, 2017, 1:30 p.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90
Observation by Jamie Tackman

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Clara Lake Basin

Route Description: Summer trail then to upper basin, Ran into the mountain rescue crew and they advised me of their findings. Prompted me to have a closer look.

Weather: Clear, wind out of the west estamated 7 to 10 mph, temps mid 20 ies. some snow transportation in exposed areas.

Snowpack: In the area I looked at there was 85cm total depth, 6000 east aspect 120 degrees, noticeable transformation at the snow ground interphase, preformed 2 CT with similar results CT 7/7 at 6cm Q3 CT 25/27 at 40cm Q 1 . Yesterday the entire basin was un affected by the wind, but today it was wind buffed in all but the most protected areas ( anything protected from a west wind) found good skiing in protected areas, but avoided steeper wind loaded areas.

Avalanches: None

Jan. 14, 2017, 1:30 p.m. PST

Region: Snoqualmie Pass

Elevation: Near treeline

Aspect: SW

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: Good skiing conditions found on open s and sw slopes. Major surface hoar forming on 3cm suncrust on all open slopes up to 4700 ft. Sun softened suncrust nicely for great turns on steeper slopes. Sheltered areas still are completely blower with great stability. Observed no windslab formation. Saw exidence of very small loose wet slides on the steepest solar aspects. WARM sun and low winds had us skinning in tee shirts, great day to be out there.

Jan. 14, 2017, 1:30 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by David Geeraerts

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Mount Rainier National Park (MRNP) paradise area, near Marmot Hill.

Weather: Clear. Air temperature -3.5C

Snowpack: Detailed snow profile can be found here: http://snowpilot.org/node/1198

Avalanches: None. Small pinwheels and rollerballs during mid-day sun on ~40 degree solar aspect slopes.

Jan. 14, 2017, noon PST

Region: East Slopes Central - Lake Chelan to South of I-90
Observation by Nick Pope

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Clara / Marion Lake Basin. Near treeline, in sparse larches.

Route Description: Chelan County Mountain Rescue was out near Mission Ridge practicing making observations of terrain, snowpack and weather.

Weather: Sunny, light SW winds, increasing in afternoon to moderate with blowing snow.

Snowpack: In sheltered areas below treeline saw HS up to 100cm, stepping out of the trees had highly variable and wind effected snowpack with generally less but up to 120cm HS. Most recent wind transport was from the W. Found FC and DH on or slightly above the ground, up to 5mm in size, with slabs up to P hardness above. Snowpack tests showed the large FC very reactive to PST, ECT and CT's. Observed cracking near the skis in one shallow area. Ski tests on a low consequence, small, steep roll did not produce any results.

Jan. 14, 2017, 11 a.m. PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by Michael Madden

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Dead Horse Creek, Paradise Area, Mt. Rainier National Park

Route Description: Paradise area: Edith Creek, Dead Horse, Glacier Vista

Weather: Clear skies, calm winds 0-3 mph, sunny and hot! Clear skies observed last 2 nights at Mt. Rainier from 3500'.

Snowpack: 1" moist snow on the surface at time of observation. Small sun crust forming on solar aspects. 4mm surface hoar observed on isolated, shaded, and protected NW-N-NE aspects in the NTL band. Sun and predicted rain should hopefully eliminate most this. Mushy snow - bring skin wax!

Avalanches: none observed

Jan. 14, 2017, 10:30 a.m. PST

Region: Stevens Pass
Observation by Michael Warner

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Skyline ridge, on and near to the Forrest road.

Route Description: Tour up near lake to practice avalanche rescue techniques.

Weather: Sunny, warm in the sun and colder in the shade.

Snowpack: Sign of WS. Moderate bursts of wind from N/NE. Small amounts of snow blowing around due to cold temps.

Avalanches: N/A

Jan. 13, 2017, 2 p.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90
Observation by Matt Hartman

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Dirtyface Peak.

Route Description: Skinned up from the lake to summit and descended SE face.

Weather: Valley fog in am, scattered clouds after 800' of elevation gain. Temps were from -12c to -13c. Winds were light to calm from West. No precip.

Snowpack: HS 90cm at 4,000', 165cm at 5,800'. Top 50cm is faceted from 1F to F and rightside up with a series of crusts on solar aspects down 15cm that is not consistent and dependent on micro-terrain (tended to be on East sides of ribs and gullies). Light (10cm) windslab from last night on SW face. Handpits showed a windslab from hard planar shears on SH down 40cm. Surface forms are facets, stellars and SH. SH on SE aspects was large (up to 6cm), widespread and often upright. It diminished in size and distribution with elevation. Snow temp down 20 cm was -6c at 4800'.

Avalanches: None. See photo for SH formation.

Jan. 13, 2017, 9 a.m. PST

Region: Snoqualmie Pass
Observation by Austin Smith

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Phantom Slide from Alpenthal parking lot to ridge line west of Snoqualmie peak

Route Description: straight up avalanche route, descended further west rejoining ascent route below cliff band on return

Weather: lightly overcast

Snowpack: mostly consolidated, ~2" powder on top at higher elevations. In pit snowpack fractured about 2' down with moderate stress

Avalanches: none noted, very light sloughing on slopes >40 degrees

Jan. 12, 2017, 6 p.m. PST

Region: Stevens Pass
Observation by Matt Hartman

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Stevens Pass--Susan Jane Peak to Christmas Bowl to Wenatchee Bowl.

Route Description: Skinned to 5400' from resort and skied S-SW facing slope to 4600'. Then North facing slopes from 5400' to 3,600' and West slopes from 5,800 to 3700'.

Weather: Clear skies, calm winds, no precip. Temps were between -5.5 and -7.5c

Snowpack: Surface forms are a mixed bag of flat SH (3-6mm) in sheltered areas, FCsf, and PPsd, all about .5mm. Top 10cm of snow is F hardness and lacks slab properties. HS 230cm at 5600'. Hand pits had hard shears that were planar on windslabs formed post New Years and Jan 9 snow interfaces about 20cm down. Snow temp down 20cm was -10.5c at 5,400'

Avalanches: None. Ski tests showed not results on terrain in the 35-40 degree range on a variety of aspects Btl and Ntl.

Jan. 12, 2017, noon PST

Region: Mt Hood
Observation by Alex Laudon

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Mt Hood North Side

Route Description: Tilly Jane (3,800') to Tie-In-Rock (8,500')

Weather: Calm winds, Clear, Temps 10F-20F

Snowpack: Below Treeline (4000-6000'): dry, loose powder, ski penetration avg 15cm. Evidence of past east wind transport near ridges, subsequently overlaid by most recent snowfall. Widespread SH. No signs of instability. Treeline (6000-7000ft): variably supportable wind crust / wind slabs of 1F hardness poorly bonded to underlying F hardness snow. Recent hard slab formation on NE-E aspects due to west winds. Ski penetration 1-3cm. Alpine (above 7000ft): supportable wind crust / wind slab of 1F/P hardness overlying F hardness dry snow. Ski penetration 0-1cm. Generally smooth, carvable surface (sastrugis near ridges). Slabs likely hard to trigger but potentially consequencial.

Avalanches: Eliot Glacier 8500': crown/debris observed at/above middle bench. D1 hard slab likely triggered by icefall. Eliot Glacier 7800': crown/debris observed on west moraine (NE aspect, windloaded, D1). See attached picture Eliot Gl

Jan. 12, 2017, noon PST

Region: Snoqualmie Pass

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Kendall Knob

Route Description: PCT to clear cut to forest service road to S-SW ridge

Weather: Clear, Calm, Sunny, Cold

Snowpack: Right Side up snowpack. Surface hoar developing on SW-S-SE aspects . S-SE solar effects noted. Rain Crust observed in snow profile pit at approx. 20 cms. One small wind slab observed on SSW aspect that was not reactive. SW aspects were skiing well with very minor, very small point releases on the steeper pitches.

Avalanches: None.

Jan. 12, 2017, 11:30 a.m. PST

Region: Mt Hood
Observation by Patrick Fink

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: N/NE facing Pea Gravel Ridge

Route Description: Multiple lines skied at and above treeline.

Weather: Clear, windless, becoming warmer around noon but without apparent thermal effect on the snow.

Snowpack: Limited, thin, nonreactive wind-slab in the top 10 m of the slope, otherwise right-side-up sheltered snow with excellent riding conditions. Exit to Heather Canyon was combo wind-board and wind-scoured. The further out of tree line the more dense and wind-affected the surface snow became, and this could be the reactive setup for the weekend warmup.

Avalanches: None observed or triggered. Fridge-sized cornice drops and ski cuts produced no results aside from small sluffs in the loose snow. Watched Meadows pro patrol shoot a variety of upper-heather slopes with only small wind slap releases on steep terrain.

Jan. 12, 2017, 9:30 a.m. PST

Region: Snoqualmie Pass
Observation by Larry Colagiovanni

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Route Description: Followed the PCT to about where it intersects with the Commonwealth Basin Trail and then headed up through the trees. Stayed in the trees on the way up/down between the open slopes on Kendall.

Weather: Sunny, ~15F, light winds out of the east once above the treeline

Snowpack: Dug a quick pit at 5300' on a WSW aspect. Got the wind slab to fail a few times at ~30cm at CT9 with Q1.

Jan. 11, 2017, 1:22 p.m. PST

Region: West Slopes North - Canadian Border to Skagit River
Observation by Pete Beglin

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: W side of Mt. Herman above treeline

Route Description: dropped from ridge on S side of Herman onto W

Weather: clear, still; slightly warming

Snowpack: Stiff windpack above treeline, dry powder below; 12'' stiff wind slab above treeline with poor bond; no layers found of concern below treeline on W and N

Avalanches: 12" stiff wind slab released near shallow rocks at head of W slope on ski traverse; broke into large firm blocks and ran quickly down 30-35 degree slope between 300 and 400 vf

Jan. 11, 2017, 10 a.m. PST

Region: Snoqualmie Pass

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: Skied the Slot. Storm snow was very reactive on north aspects and in the Slot proper as well as the exit gully. Stepping down from the top ~10-15 cm to 30-45 cms. Very reactive. On the south aspect (Phantom and Phantom trees) far less reactive.

Route Description: Up Phantom trees, down Slot, up exit gully, down Phantom trees to lower part of Phantom slide path

Weather: Overcast, light to moderate wind. Clearing towards noon

Snowpack: Light unconsolidated to windslab. Risk mitigation and careful terrain selection were keys to success.

Jan. 11, 2017, 10 a.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90
Observation by Nick Pope

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Icicle Creek

Route Description: Toured between 2000' and 5500' on NE, E and S slopes.

Weather: At 1015, 5500', few clouds, air temp -10 C, wind light from south, boot pen 40cm, with 100cm of snow on the ground.

Snowpack: Shallow and variable along the route. HS ranged from 40cm to 100cm. Evidence of windloading from north during last week wind event. At 5300' saw HS: 80cm, from surface had 10cm PP F hard, over 20 cm FC 4F -> 1F, and FC 1F->P to ground. Solar aspects had one or more crusts down 10-40cm. Lower elevations had boot pen to ground. Ski quality was good. Could feel sun starting to warm surface snow so quality may not last.

Avalanches: At 5300' on SE 38 deg slope had a collapse and a crack encircle me about 8m away. Little to no displacement due to slope support. Failure was at a facet / crust combo down 35cm. Hand shears slid very easily on this. This combo did not appear widespread as the crust went away on less steep or less solar slopes. Saw numerous older D1 slabs on steep S slopes which appeared to be from last wind event or recent storm snow. Debris was covered.

Jan. 11, 2017, 9 a.m. PST

Region: East Slopes South - South of I-90 to Columbia River
Observation by Bradley Gasawski

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Manastash Ridge - Chest Pains area

Route Description: Up the off-piste area of the mountain biking trail Chest Pains.

Weather: Snowing, cloudy, wind and wind gusts on ridge around 15-20 mph. New snow accumulation of 2" in 2 hours. Blowing snow.

Snowpack: 14-16" of unconsolidated snow. 5 separate occasions of whumfing and shooting cracks. Snowpack is unstable. We skied a slope angle of 18 degrees mostly with one pitch of 25 degrees. All slopes were on a N-NW aspect.

Jan. 9, 2017, 6 p.m. PST

Region: Stevens Pass
Observation by Matt Hartman

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Skyline-Tye Peak-Moonlight.

Route Description: Dropped North off Skyline and ascended to Tye Peak and skied the SE shoudler. Did a second lap to the North off Skyline and then up and out Moonlight Basin.

Weather: Sky: OVC to BKN. Temps: -6c for most of the day. Winds: L from W to SW. Precip: S-1 in am, none in afternoon.

Snowpack: Surface forms were a mix of DF, PPgp, and DFbk from .5 to 1mm. Temps down 20 cm were -8c in 2 locations at 5,200'. HS 207-220cm at 5,200'. Light windslab formation overnight on East aspects that was max 20cm deep and not reactive. Ski tests on 35 degree slopes on N, SE and E aspects showed no signs of instability. Very steep (40 degree) micro-terrain had consistent sluffing. Ski quality was good.

Avalanches: None.

Jan. 9, 2017, 1:10 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by Jere Burrell

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Bullion Basin NE and NW Slopes

Route Description: Ascended a well traveled skin track up the Bullion Basin Trail. Then turned south into a NE facing bowl below point 6479'. In this area the new snow was over a firm crust. Descended a NW 40 degree slope @ 6300'.

Weather: Light to Moderate snowfall with light ENE winds. An additional 5cm throughout the day.

Snowpack: SW 25 degree slope @5400', HS 154cm, CTE RP 15cm down. NE 30 degree slope @ 6200' HS 140cm, CTM RP 29cm down, ECTX @ the same location. On the ground was 5cm of 2.5mm basal facets but showed bonding and stability on this large column.

Avalanches: None observed while on descent of a 40 degree NW slope. Loose dry snow releases from turns and no storm slabs observed.

Jan. 9, 2017, 8 a.m. PST

Region: Mt Hood
Observation by eric lockovitch

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Newton Trees

Route Description: MHM Hood River lot - up Heather run out then climber ridge.

Weather: off and on showers of fluff

Snowpack: Newton trees below Heather lift. N facing. CT pass. Dug 100cm pit. Snow pack was 200cm. 55cm of right side up snow on crazy 20cm thick rain crust. 10cm of sugar on top of another 5cm rain crust. All bonded and self supporting especially upper rain crust which could support a large vehicle.

Avalanches: none seen - no bombing at MHM either

Jan. 8, 2017, 6 p.m. PST

Region: Stevens Pass
Observation by Matt Hartman---Northwest Mountain School

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: AIARE Level 1 Course. Skyline Ridge--Moonlight Basin

Route Description: Skinned up the road to Skyline Lake, dropped to the North, then moved up and East to Moonlight Basin.

Weather: Sky: Overcast. Wind: Moderate to Strong fro East. Temps: -11c low, -9c high. Precip: S-1 increasing to S1 in the afternoon.

Snowpack: Rightside up above the 12/20 IFrc (down 70cm) from P to F @ 4900' East aspect. ETC did not propagate. CTH BRK down 25 cm. Windloading at ridgetops on from East winds was obvious. Ski tests on 35 degree E and N slopes showed no sign of instability. Hand pits at 4600' SE aspects showed windslabs that were poorly bonding to snow below.

Avalanches: None.

Jan. 8, 2017, 4:46 p.m. PST

Region: Snoqualmie Pass

Elevation: Near treeline

Aspect: E

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: variable surface conditions, but pockets of small wind slabs (D1) were growing throughout the day. best skiing in sheltered areas below treeline. minor cracking on the small pockets at treeline, but unable to trigger on small test slopes. lots of snow transport on all aspects due to swirling winds above Source Lake.

Jan. 8, 2017, 1 p.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90
Observation by Bradley Gasawski

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Swauk Meadows near xc ski trail in the Blewett Pass area.

Route Description: Skied nordic ski trails and some low angle off-piste terrain out of Blewett Pass.

Weather: Cloudy with snowfall. 5" of new snow fell over 6 hours while we were out there. Winds around 20-25 mph. There was blowing snow.

Snowpack: 61 cm of mostly unconsolidated snow. A new storm slab was forming with a depth of 10cm at 1pm. Burped the baby with the shovel to test a crust interface discovered at 31 cm from the top. It didn't fail, but there was a Q1 on another crust layer 34 cm from the top. Shovel shear performed an isolated 30 x 30 column to test these two interfaces. The shovel shear resulted in the column breaking at ground level. The interfaces we were testing did not react. Performed an Extended Column Test with an ECTN 18 at 10 cm down. Continued test to 30 taps with no propagation. No reaction at interface of the new storm slab or the two crust layers that reacted in the other tests. Small hand pits were dug on various aspects with no real slabs discovered. A lot of facets were discovered throughout the snowpack. Boot pen was 55cm.

Avalanches: None seen.

Jan. 8, 2017, 11 a.m. PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by Denis DuBois

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Paradise (Mt Rainier Nordic Patrol)

Route Description: N, W and S aspects.

Weather: Snowing lightly; gusty; warming trend

Snowpack: Deeply sheltered timber skiing was decent Sunday 1/8/17 compared to the alpine we attempted to ski the past 2 days. Two pits, no result -- at 5200 ft, 2 CT and 2 ECT, 1 N and 1 S aspect, 3 recreational testers. <P> Campers reported brief freezing rain Sunday morning, it formed a thin crust that was quickly covered by new falling and blowing snow. (Redistribution around Paradise has been significant all week.)

Avalanches: Slopes 30-40 degrees remained stable underfoot.

Jan. 7, 2017, 4 p.m. PST

Region: West Slopes Central - Skagit River to South of I-90
Observation by Jean Ruggiero

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Climbed Bridal Veil Falls and continued up the creek to Lake Serene on ice and snow.

Route Description: Bridal Veil Falls/Creek

Weather: Overcast, light snow after about 2pm. Temps slightly below freezing. Very windy at Lake Serene.

Snowpack: Mostly stable with wind slabs in the wind loaded drainage. Wind slabs were 5-6" thick and not well bonded with snow underneath in these areas.

Avalanches: None

Jan. 6, 2017, 3 p.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Skied central summit of Red mountain down the ridge through glades and clearcuts.

Weather: Clear with partial high clouds

Snowpack: 10-20 cm extremely faceted snow on top of multiple breakable crusts up to approximately 4000'. In higher elevations the crust disappears and yielded good powder skiing. Widespread surface hoar 1-3 cm in sheltered clearings below treeline but not higher, probably due to wind. Wind slabs noted at ridge tops.

Avalanches: None observed but we did get a whumpf from a decent wind slab at ridge top.

Jan. 5, 2017, 10 a.m. PST

Region: Snoqualmie Pass

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Alpental Valley, Denny Creek, Melakwa Lakes

Route Description: Alpental to Denny creek then runs around Low Mountain followed by an exit over the Byrant col. Skipped BPC and skied into great scott bowl.

Weather: Sunny and cold. Calm to light breeze.

Snowpack: Extremely wind effected in the mid to high alpine. Best skiing is found down low near the valley floor. We found two fantastic powder runs. One on an SW aspect in the Denny Creek Valley. The other NW Aspect off Low Mountain. The climb up the Bryant Peak Col was extremely wind effected. The ski down the Alpental backcountry was equally wind scoured. No signs of slides that day and despite the wind layer on top everything felt pretty solid.

Avalanches: None

Jan. 4, 2017, 3 p.m. PST

Region: Stevens Pass
Observation by John & Olivia Race - NW Mountain School

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Immediately South of Stevens Pass

Route Description: Toured between 5000' and 2600' on West and South Aspects. Skied open and treed slopes up to 35+ degrees.

Weather: Clear Skies, Air Temp was -11.4C, ridge top winds were Moderate at 5000, strong higher up. All peaks in view had significant plumes blowing from East to West. Below ridge lines winds were light.

Snowpack: HS at 4850 on West Aspect is 175cm. Surface consists of near surface facets (1mm) and surface hoar (1-2mm, laying down) There is a .5 cm suncrust down 22 cm, Dec 17 is down 72 cm. Dec 17 remains unreactive in ECT's. Compression tests did produce easy results on 1 mm facets down 21 cms (1 cm above suncrust) but were RP-Q3 and this layer was not moving anywhere while skiing. Windslab is hit or miss, more prevalent lower than just below ridge tops. Test slopes produced no results. We did work to avoid bigger, more obvious windslabs, but skied fairly steep slopes at times in open terrain. Some light crusts forming on S. aspects.

Avalanches: None observed.

Jan. 4, 2017, 1:30 p.m. PST

Region: West Slopes North - Canadian Border to Skagit River

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: Mt. Herman above treeline

Route Description: Dropped in just below the top

Weather: Sunshine and cold

Snowpack: Very solid, some thin sun crust and wind transported snow to lookout for.

Avalanches: One of us triggered a small wind slab. Caught air and landed in wind loaded zone which put too much weight on slab and caused it to release about 12" down. Small slab and didn't go more then about 100ft before stopping. Everyone was safe and made it out okay. Watch for wind loaded zones! This was on SE aspect just above treeline.

Jan. 4, 2017, 1 p.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90
Observation by Jamie Tackman

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Dirtyface mt

Route Description: Summer trail

Weather: Clear sky's, temp 3 degrees (estimated ) wind 090 lite increased intensity at higher elevations. Observed huge snow plumes blowing off the higher peaks of the Cascades (Big Jim) loading west aspect slopes.

Snowpack: Dug a pit and preformed a compression colum test. Pit was on a east aspect 120 degrees at 5000 feet. The snow showed much less defined crust/facet layers than observed in other areas. The snow was right side up, with about eight inches ski penatration. There was a CT15 at 6 cm Q2 and a CT22 at 50cm Q2. At lower elevations (blow 3000) there was a non supportable crust with 6cm new on top.

Avalanches: None

Jan. 3, 2017, 1:50 p.m. PST

Region: Stevens Pass
Observation by safely anonymous

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: arrowhead trees

Weather: clear and cold

Snowpack: New years powder has settled to 8-10 inches sitting on a very thin freezing rain or rain crust from sometime last midweek or just before the storm. New storm snow is faceting and near suface facets are forming above and below the crust. There were several of the steeper spots just above and below the road cuts where the storm snow had cracked/wrinkled/crinkled/shifted but not actually slid during or immediately after the storm. Suprising to me this didn't get reported already.

Avalanches: none

Jan. 2, 2017, 12:30 p.m. PST

Region: Snoqualmie Pass

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? Yes

Area Description: West Northwest facing couloir on Mt Roosevelt accessed from the Alpental valley via Snow Lake.

Route Description: Skied up Chair Peak from Source Lake and then down the North side. Up Mt Roosevelt and down the WSW couloir (Holy Diver).

Weather: Clear/ Sunny

Snowpack: 2 pit tests on north aspect yielded a stable feeling snowpack. Our only concern being recently transported snow from the last storm cycle over the last two days.

Avalanches: 60-70ft crown, 10-20inches in depth. Two people had already skiied down the entirety of the couloir. They claimed to have caused a 5-inch in depth slide upon entry. I was the only one on the slope, two turns in the snow around me broke. Fortunately I was near the initiation zone and was able to self arrest but not without being carried ~50-60ft.

Jan. 2, 2017, 11:30 a.m. PST

Region: West Slopes North - Canadian Border to Skagit River

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Artist Point & Table Mountain near Mt. Baker Ski Area

Route Description: Toured up to Artist Point and observed wind loading on many atypical aspects. Our group decided to ski into the Bagley Lakes basin via Blueberry Chutes on the North aspect of Table Mountain.

Weather: Clear, cold, gusty ridge top winds

Snowpack: Right side up, deep powder where not wind scoured. Terrain on and near ridges in the near treeline zone was wind loaded and we did encounter some stiff wind slab while travelling. Large cornices are building with recent snow and winds. We found good stability overall, other than some thin wind slab that appeared reactive on steep slopes.

Avalanches: Observed a small, skier triggered wind slab on a steep NE slope of Table Mountain and a small, natural slide on a S facing slope on Mt. Herman.

Jan. 1, 2017, 6 p.m. PST

Region: Stevens Pass
Observation by Matt Hartman--Northwest Mountain School

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Stevens Pass Ski Resort BC Terrain.

Route Description: Skied out from Stevens Pass and dug a test pit at 5,800' on a SE aspect. Skied SE to 3600' and then ascended and skied W-NW to Hwy 2. Skied open slopes up to 30 degrees and gladed areas up to 35 degrees.

Weather: Sky-Broken to Overcast. Wind L-M from the East, increasing with the day. Temps hovered around -8 to -10c.

Snowpack: See pit picture below. New snow is fist hardness over 1 finger to pencil below and is rightside up. HS 185cm. Snow pack tests showed weak surface snow down 25 cm with resistant planar shear qualities. ECT test did not propagate. The December PWL layers are still identifiable, but are clearly rounding out. The East wind was actively forming windslabs on ridgetops and crossloads.

Avalanches: None. A test slope facing SW with wind effect cracked with skier weight.

Jan. 1, 2017, 1 p.m. PST

Region: Mt Hood
Observation by Andrew Osborn

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: The ridge between Clark Creek and Newton Creek

Route Description: Climbed out of Mt Hood Meadows HRM lot up Clark Creek Canyon. Skinned to 5800' and descended the ridge due to gusty winds. Skied treed W; SW aspect with ~40cm of low density snow on the supportable rain crust.

Weather: Occasional snow; wind BTL 10-20

Snowpack: Dug a quick pit @5600' on a wind loaded W; SW aspect. Was able to replicate a Q2 failure at CT16 on the rain crust. Little propagation.

Jan. 1, 2017, 9:22 a.m. PST

Region: Snoqualmie Pass

Elevation: Below treeline

Aspect: SW

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: Powder morning in the Alpental beacon park. Dug into an apparently virgin open slope. Layers of note: Beautiful 3 mm stellar flakes on top Graupel 10 cm down failing consistently at CT4 Crust 25 cm down, with a weakness beneath failing consistently at CT13. ECT failed half-block also at 13. Inconsistent CT25 60 cm down. Shovel shears pop well above a crust 70 cm down, but nothing in CT.

Dec. 31, 2016, 10:30 a.m. PST

Region: East Slopes North - Canadian Border to Lake Chelan

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Delancy Ridge

Route Description: SW aspects east of Driveway Butte trail

Weather: Sunny

Snowpack: Loud "whumpf"triggered on ascent near 4,700' elevation on SW aspect of Delancy Ridge. Felt sudden collapse in snowpack about 30 feet downslope of where "whumpf" was triggered. Terrain was well anchored by alder clumps and other brush, no shooting cracks observed. Unable to determine failure plane, potential persistent weak layer. Rough shears noted on SW aspects about 18" deep.

Avalanches: None triggered; large sudden snowpack collapse/whumpf experienced.

Dec. 31, 2016, 10:30 a.m. PST

Region: Snoqualmie Pass
Observation by Adam Pinsky

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Kendall Peaks - west side - approx 4800'

Route Description: Summit West lot up commonwealth basin - Kendall Trees - Kendall Peaks

Weather: Sunny though the fog was rising

Snowpack: Snow pit - Compression test - no result - found rain crust at 50 cm - old surface hoar/facets around that crust is turning into rounds -

Dec. 30, 2016, 3:30 p.m. PST

Region: Stevens Pass
Observation by Kari Jeroue

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: Hiked up heather ridge to the cell phone tower dropped down from there towards Tye road. Triggered a slab about 50 ft -75 ft across with a 12in crown. My partner James Gillespie immediately avoided the avalanche by riding to the side. 2 people in our party both with avalanche gear and knowledge.

Route Description: SW facing aspect. Snowboarded the tree line.

Weather: Clear. Sunset

Snowpack: 8-12in of powder snow on a crust.

Avalanches: Yes.

Dec. 30, 2016, 2 p.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90
Observation by Greg Halberg

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Two separate second hand accounts of slides in the hurricane ridge area. Both on northeast aspect, shaded slopes. Both fairly significant in size relative to the terrain and propagating significantly. The first was within the currently closed poma bowl on a small ledge adjacent to "avalanche" called cabin ledges. Skier triggered. The other was on the north side of the obstruction point road near "the slot". This was skier triggered with partial burial. No injuries. Both apparently slid on a shallower layer and stepped down to the apparent December 17 PWL. Didn't get a chance for first hand observation. I have a picture from the road of the slot avalanche but can't figure how to attach.

Dec. 30, 2016, 1:45 p.m. PST

Region: West Slopes Central - Skagit River to South of I-90
Observation by Garth Ferber

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Yodelin area near Stevens Pass 3600-5200'. Runs on NW slopes and SW slopes.

Route Description: Good skiing and no signs of instability during this BTL tour on up to 35 deg slopes. Minor wind effects but not enough for wind slab on the forested ridge at 5200'. Pit at 13:45 on NW aspect at 4520' mainly had 94 cm of increasing density with depth snow lacking slab layers above the Solstice crust. CTN on Solstice crust. Views not extensive but did not see signs of recent activity. Wet near surface layer from bump in snow levels Thursday night rapidly faded away with elevation above about 4000 feet.

Weather: Broken clouds, light winds

Dec. 30, 2016, 1 p.m. PST

Region: Snoqualmie Pass

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Phantom Trees

Route Description: Skinned up climbers left of the Phantom

Weather: sunny with clouds

Snowpack: ~1' of new snow poorly bonded to snowpack; upper 1' not slabby / unconsolidated; good skiing on upper slopes of Mt Snoqualmie; no slides triggered or observed. No instability in snowpack observed

Avalanches: None

Dec. 30, 2016, 1 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by Denis DuBois

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Mazama Ridge.

Route Description: Profile on east aspect around 2000 m/6000 ft, 30° slope. Nordic Ski Patrol route, 4th Xing to Inspiration Saddle.

Weather: Please carry the 10 essentials and remember winter days are short.

Snowpack: Several crusts: 7cm zipper crust, then firmer crusts at 59, 70, 84, 87cm. Fist-soft snow between crusts. Most reactive was 80 cm, very easy, smooth shear Q1. Weak interface with large grains at bottom of a 10cm thick crust (12/17?). Other details probably no longer useful at this point, apologies for the delay in posting here. It skied well for us and others. Very nice snow quality for touring all up and down Mazama Ridge. Some wind effect where exposed.

Dec. 30, 2016, 10 a.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90
Observation by Nick Pope

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Avalanches: Observed from a mile a way a recent natural slab on a SE slope at 5500' in the Lake Wenatchee area. Looked fresh, like last night/this morning. Would estimate it at D 1.5 but hard to gauge dimensions due to distance. Had good visibility of other start zones and no other avs noted.

Dec. 29, 2016, 1:30 p.m. PST

Region: West Slopes Central - Skagit River to South of I-90

Elevation: Above treeline

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: Two large avalanches occurred above Four Caves as we were hiking up. We stayed pretty far away but people could hear the rumble from the entrance to the trail over a mile away. STAY AWAY FROM THE CAVE AREA.

Dec. 29, 2016, 1:30 p.m. PST

Region: Snoqualmie Pass
Observation by Caleb Bowman

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Kendall knob

Route Description: Southwest to south facing slopes below tree line

Weather: Overcast skies, no wind, moist snow and graupel turned to rain over the afternoon

Snowpack: A pit on a south facing slope at ~4000' revealed a melt crust from 3-6cm and rain crust from 55-65cm. Rain crust produced clean planar shears in snowpack testing. Old storm snow overlying the rain crust was noticeably lower density than the layer of new storm snow.

Avalanches: No evidence of natural avalanches observed. Test slopes at various locations along the route revealed slab character of storm snow over the rain crust. Small shooting cracks between skis also occurred at various locations throughout the terrain.

Dec. 29, 2016, 1:01 p.m. PST

Region: East Slopes North - Canadian Border to Lake Chelan
Observation by Jon Gehrig

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Delancey Ridge edits to observations on 12/29 @13:00

Snowpack: 10-20cm of basal faceting at interface of ground and snowpack. Top of snowpack mostly right side up from 100-70cm with a moderately stable but upside down snowpack below (where faceting was found).

Dec. 29, 2016, 1 p.m. PST

Region: East Slopes North - Canadian Border to Lake Chelan
Observation by Jon Gehrig

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Delancey Ridge, SSE Slopes 3,600'-4,280'

Route Description: Skinned from Silver Star Creek from the Highway 20 gate to mid-slopes (up to 4,280') of Delancey Ridge (southern exposure).

Weather: Overcast with low visibility. New overnight snow accumulation of 3-7" and snowing moderately (about 1" per hour estimated during ski). Daytime high temps of 29 degrees at 2,200' with moderate warming from previous day (sunny and clear).

Snowpack: Total snow depth: 100cm. 2-4mm of basal faceting was found at the interface of the ground and snowpack. Compression test: CT 18--> 35 RP; CT 21-->80 RP. Entire block shook on basal facets during CT and easily pulled from ground after CT.

Avalanches: None observed.

Dec. 28, 2016, 6 p.m. PST

Region: Stevens Pass
Observation by Matt Hartman

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Stevens Pass BC. Skied E-SE to Mill Creek Valley (2 laps) and W to HWY 2.

Route Description: Skied past Highlands Bowl and down to Mill Creek in lower angle terrain and towards HWY 2. All open terrain was 30 degrees or less, though some trees and rollovers were in the 35 degree range.

Weather: Sky-Broken to Overcast. Winds-L to M from the NW. Temps were at -6c for most of the day. At times leeward slopes were being loaded at 5,200'

Snowpack: Snow above the 12-20 IFrc was about 60 cm and very weak in all spots with F hardness (did not observe in any wind loaded areas, where it was likely harder). Small, steep test slopes on treed runs would release very small storm slabs and dry-loose. Snow SFC temps were -4c and down 20cm -5c. Hand pits failed on cuts and had very little slab structure.

Avalanches: Saw a distant D2 on a Ridge W of Skyline Ridge from a distance. It was on a Southerly aspect and quite far away from our location. It appeared to be a natural.

Dec. 28, 2016, 2 p.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90
Observation by Nate Hough-Snee

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: ~30 degree NE slope off Diamondhead, 5310'

Route Description: Standard approach to Diamondhead from the north. Approached in the burn/trees to see what the next storm/wind event might settle out on.

Weather: Clear, calm, and cold below ridges and treeline. W/NW wind was pumping on the ridge. No visible snow transport, but scoured on W slopes, deposited on E slopes. -6c air, -5c surface, -4c

Snowpack: Total snow depth 75cm. 75-57cm - 4F wind-affected snow; 57cm - density change/buried surface hoar; 57-45cm 1F/4F strong, rounded snow; 45-25cm 1F rounds; 25-0cm deep facets >2mm and fist strength. The pre-Christmas storms have consolidated quite a bit, the wind kicked up, and the bottom of the snowpack is still rotten. There's still a density change (buried surface hoar from late last week at 75 cm). Wind slabs above this layer are sensitive to shovel shear, kick-turns above the skin track, etc. Multiple CTX and ECTX, but low-angle (30-deg) test zone due to wind slabs. Turns found plenty of rock and wood lurking below the surface to anchor snow and force a skier to get the toolbox out. Take-away - Generally wind-affected, albeit anchored, shallow snowpack at Blewett Pass with two weak layers: buried pre-Christmas surface hoar and the deep facets that have also been apparent in the Mission Ridge metropolitan area. These layers may react under the next storm/wind event.

Avalanches: None.

Dec. 28, 2016, 11:30 a.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90
Observation by Jamie Tackman

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Clara lake basin.

Route Description: Summer trail to Marion, then to Mission Peak environs.

Weather: High overcast, light winds, out of the west, temperature 25 degree F ( estamated)

Snowpack: Snow pack in the upper basin was quite variable, with wind scoured ridges, and deposit zones in valleys, and wind protected areas. We dug a quick pit on a NE deposit zone at 6000 feet. We did not gather that much pit data, just wanted to get a general idea about the snow pack. We were able to dig all the way to the ground and preformed one compression test, a lite crust/surface hoar about 6cm was the most reactive, followed by the 12/17-18 crust, and then a failure at the ground snow interface where there was significant transformation. We kept to low angle terrain and were able to find a few good turns, but there were plenty of rocks to contend with. We did try a few short steep slopes trying to test for weakness with one small slab release, on the 6cm crust layer. Still a shallow snow pack here, but the deposit zones are deep enough to cause trouble.

Avalanches: None observed.

Dec. 28, 2016, 3:45 a.m. PST

Region: Olympics

Did you see any avalanches? No
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? Yes

Area Description: Poma side of Hurricane Ridge, below treed area referred to as Cabin Ledges. I triggered and was caught in a slide and buried up above my shoulders, had to dig myself out.

Weather: Clear

Dec. 27, 2016, 5 p.m. PST

Region: Stevens Pass
Observation by John & Olivia Race

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Lift-assisted touring well outside ski area near Stevens Pass

Route Description: 3600-5600' NE of Stevens Pass Ski Area into Mill Creek and Highway 2 Valleys.

Weather: Moderate to strong winds from west at ridge tops, generally light winds from SSE below. Sky was obscured most of day. S1 in am, S2 in afternoon.

Snowpack: Significant wind transport near ridge tops, primarily from west to east. Stiff, but skiable, wind slab on both sides of ridges, but much more deposition on east. 12/17 crust is down 60 cm and was unreactive in all slope and stability tests. Occasional cracking in windslab in very unsupported places, no whumpfing noted. Ski quality is good in trees. There is 10-15 cm of 4F windslab over fist in most exposed areas over 5000.'

Avalanches: Test slopes over 40 degrees on E and NE aspects produced small storm slabs that moved, but not far and broke down 40 cm. Sloughing in steep treed terrain ran quickly.

Dec. 25, 2016, 10:10 a.m. PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by Alexander Vasarab

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Pit and snow cave on SSW aspect of a minor (~50 ft prominence) ridge near treeline in the MSH area.

Weather: Overnight low of -7 C with no clouds, temp at time of observation around freezing. No blowing wind, with only brief spells of mild precipitation.

Snowpack: At around 3600': 175 cm total depth, several crusts: 12 cm down 2 cm deep, 21 cm down 20 cm deep, 59 cm down 7 cm deep. Did not investigate snow forms. Boot pen 20cm in places but generally < 5cm, no ski pen.

Avalanches: None encountered, none triggerable by ski cuts.

Dec. 24, 2016, 10 a.m. PST

Region: Olympics
Observation by Sam Luthy

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: Maggies pullout to sunrise ridge. A late observation submission, but still some relevant data to report.

Route Description: Up Standard ski track from Maggies to ridgetop and then along the ridge to Maggies trees, Bowling Alley and Kingdome.

Weather: Clear and Sunny, with clouds building and rising from the east through the day.

Snowpack: Two snow pits were dug. First on a NW aspect of maggies ridge, 5400 ft. Snow pack settled on approaching pit location with 30+ ft shooting crack. The 50cm PWL was very prominent at this location and both CT and ECT failed on isolation. A pit dug in the S-SE aspect just up the ridge also showed the 50cm PWL. A CT test yielded CTM SC on the 50cm layer. From the Cool and clear Friday night a new 4-5mm surface hore layer formed. And the morning sun started a thin and localized crust on E-SE aspects. Travel into new areas without an existing skin or ski track resulted in continuing snowpack collapse and wumphing.

Avalanches: On 12/24 several pockets of 8-10cm deep pulled out after being skier triggered on S-SE aspects. These were localized on terrain up to 30 degrees and did not step down to the 50cm PWL. A few natural slides occurred on steep( 40+)south slopes of Sunrise Rock presumably from solar heating. Two Ski cut triggered slides on S-SE faces were observed on steep rollovers to 40+ degree terrain. These did release and/ or step down to the 50cm PWL but did not propagate widely (R1- D0.5-1). Many of the open faces and steeper tree runs in the maggies areas were skied on Saturday with little avalanche activity. However the PWL still exists and should be treated carefully. Image is of sunrise ridge, a heavily skied face just off the rope tow. Three small releases can be seen below the cliff band.

Dec. 23, 2016, 3:30 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by Michael Madden

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Paradise Area, Mount Rainier National Park

Route Description: Edith Creek, Mazama Ridge

Weather: Light snowfall (S1) this morning increasing to moderate snowfall currently (S2). Currently 9.5" new snow (HS24). Light westerly winds @5-10mph in Paradise this morning trending to moderate westerly winds @10-20mps currently. Cloud cover and visibility steadily decreased from overcasts with Tatoosh visible to currently obscured with 300 meter visibly. Temps steadily decreasing from 30deg. F this morning to currently 23deg. F.

Snowpack: Firm 5cm surface ice crust observed yesterday (12/22) on SE to SW aspects that was very supportive and necessitated ski crampons on even moderate slopes. Tsurf: -4.5deg. C on 12/22. Today (12/23) signs of developing storm snow becoming increasingly cohesive that cracks and sliding easily under ski on ice crust. No propagating/shooting cracks observed in new snow.

Avalanches: None observed

Dec. 23, 2016, 2 p.m. PST

Region: Stevens Pass
Observation by Rusty Milholland

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: Skyline Ridge - Tye Peak

Weather: Intermittent snow and rime with moderate winds on ridges.

Snowpack: Approx 4-6 inches of fast, rimed snow overtop a firm crust made for easy travel and good skiing in low angle terrain. Moderate easterly winds during the day transported snow along unprotected ridges. New snow did not appear to bond well to firm crusts on most aspects and elevations, though no slides observed in consequential terrain.

Avalanches: Intentionally triggered D1 windslab ~2-4" deep and 20' across on a small but steep mid-slope convexity. Some sluffing noted within the new slow in steeper terrain.

Dec. 23, 2016, 11 a.m. PST

Region: Stevens Pass
Observation by Nate Hough-Snee

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Pit on east-facing slope on ridge between Lanham and Henry Drainages. Just below 5600'

Weather: All of the above: Warm, cold, foggy, snowing, clearing. Easterly flow kept it cool much of the afternoon on ridges. -5c air temp around 11am.

Snowpack: 165 cm total snow depth. Slightly wind-affected 4-finger Storm snow 165-145 cm - Sun crust 145 cm - (1 finger) near surface facets (4-finger) gave way to predominantly strong, decomposing snow forms (1-finger) 140 cm and below. Compression test on a ~35 degree slope above a 40+ degree slope: CT 15 Q2 at 145 cm on near surface facets.

Avalanches: Cornice fall and wind slab avalanches were abundant on steep easterly slopes. Quite the natural cycle early last week when ridges loaded and then warmed (19-21 DEC 2016). At W and E aspects, storm snow was picking up momentum under small cornice drops in steep terrain, but disturbance was limited to surface snow.

Dec. 22, 2016, 2:30 p.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90
Observation by Nate Hough-Snee

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Weather: Cool, clear, calm, -2C air temp.

Snowpack: 80 cm total depth, surface hoar and 3-4 cm of storm snow on a thin, subtle melt crust capped 75-cm of right side up snow (mostly rounded forms, fist down to 1-finger). Crust was thin and could be missed in places. At the bottom of pits, cavity hoar around buried rocks and vegetation. ECTX. Biggest hazards are shallow snow. Plenty of weak snow on the top/bottom of the pit next time it snows or blows.

Avalanches: None

Dec. 22, 2016, 2:22 p.m. PST

Region: Stevens Pass
Observation by Matt Hartman

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Arrowhead Mountain, West Face.

Route Description: Skinned up and descended 30 degree slopes and clear cuts to the highway.

Weather: Precip: No Sky: Broken to Overcast Wind: L-M out of West Temps: Low -6c, High -1c

Snowpack: Surface forms are SH, DF, PPsd and PPgp below 5,500'. Above is DFbk with no ski pen. Handpits showed 10-15cm over an IFrc that is supportable but deteriorates with elevation gain. Below is weak snow and the 12/17 PWL. When the crust was isolated, we had clean shears on the 12/17 layer. The upper snowpack is weak over and under the supportable crust.

Avalanches: None. No signs of instability on ski tests.

Dec. 22, 2016, 11:30 a.m. PST

Region: Stevens Pass
Observation by Olivia Race

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Yodelin

Route Description: Cycling N Facing Trees - 3600'-5200'

Weather: Overcast in am, S-1 beginning around 1:30 PM, Wind = L from NW. T@4975' @ 11:30 = 29.8 F

Snowpack: 12/20 crust evident to about 4800' under 8-12 cm new snow, not present above this. The crust was supportive and all N facing slopes skied well both in and out of the trees. 2-8mm SH widespread from 4200-4800'. ECTP23 RP down 45 cm on FCxr above 12/17 interface @ 4975' on 23 degree S Slope w/ evidence of some wind loading. HS = 130cm at this site.

Avalanches: None observed. No results on test slopes.

Dec. 22, 2016, 11 a.m. PST

Region: Snoqualmie Pass

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Alpental Valley/Snow Lake Divide

Route Description: Snow lake

Weather: Mid 20s. Sunny in AM and partly cloudy in pm. Zero wind

Snowpack: 3cm of light snow on a breakable 4 cm rain crust. Under crust 10cm of light snow above a thin 1finger crust on top of 1fist firmness snow. Performed a somewhat hasty ECT on North aspect at 4400 feet with no propagation. After really laying into was able to get movement on the thin crust below light snow, but did not propagate across column.

Avalanches: None

Dec. 22, 2016, 9:30 a.m. PST

Region: West Slopes North - Canadian Border to Skagit River
Observation by Stephen Ettinger

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Skied the East-Southeast aspect of the northern Swift Creek drainage near Mt. Baker

Route Description: Cycled low-angle powder fields into Swift Creek

Weather: At 8am overcast with high ceiling, 30+ mph Easterly winds. Winter weather moved in at 10:00. Temp hovered around 28F, Large amounts of snow was being transported to west facing slopes

Snowpack: 1.8m snowpack at 4800ft on SE facing slope. Windslab was found 11cm CT11 Q1, and the 12/17 suncrust was buried at 47cm, CT14 Q2 . No propagation of either in ECT. Ski cutting produced no results all day.

Avalanches: Surprisingly little natural avalanche activity observed in the Table Mtn. and Herman Saddle area viewed from Artist Point. Large cornices were building on west facing slopes above popular touring zones.

Dec. 21, 2016, 9 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by Jeremy Allyn

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Crystal Mtn BC

Avalanches: Observed from the parking lot at 4pm - Natural wind slab, size D2, approx 5600ft (lower TL band), W-NW asp, leeward/crossloaded side of Ted's Buttress/W asp East Peak, 30m off ridge crest, steep planar slope. Looked to have propagated approx 30m+

Dec. 21, 2016, 7 p.m. PST

Region: Stevens Pass
Observation by Matt Hartman

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Highlands Bowl-Wenatchee Bowl

Route Description: Skied out the ridge from the ski area and observed dry-loose d1 avalanches in highlands bowl. Skied back to the highway to the west. Ski tests showed no signs of instability on 30 degree anchored slopes

Weather: sunny and clear with increasing clouds in the pm.

Snowpack: Highlands bowl was windloaded with a 1f slab over a crust (about 10cm deep), which lies over weaker snow. Handshears failed easily and cleanly below the isolated crust.

Avalanches: Small d1 dry loose in HIghlands Bowl.

Dec. 21, 2016, 5:45 p.m. PST

Region: Stevens Pass
Observation by John Race

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Toured East of Stevens Pass between 3600 and 5460.

Route Description: Christmas Pass - Susan Jane Area

Weather: Clear skies, light to no wind

Snowpack: Observed 1-2 mm surface hoar on a variety of aspects. Average HS was 195 cm. About 30 cm of snow sitting on top of 12/17 crust (1.5 cm thick), with 20 cm above that, 1 cm crust, and then 10 cm of nice, wind affected snow. No whumpfing or shooting cracks observed in 6 hour tour. Stuck mostly to lower angled terrain and well-spaced trees. 3 PST's 20/100 (END) down 30cm on 40 degree South facing slope. Went on top of 12/17 crust in small facets and decomposing stellars just above the crust. These caught your attention. It felt like yesterday's crust was supportive and bridging a bit. Temps ranged from 31.5F @ 5460 at 1250 to 17.5F 1000' lower at 1315 (not a typo). Ski quality was good.

Avalanches: None observed

Dec. 21, 2016, 10 a.m. PST

Region: Mt Hood
Observation by Alex Laudon

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Route Description: Tilly Jane to Tie-In-Rock on Cooper Spur

Weather: Clear, calm wind, 28F @ 6000ft

Snowpack: Below treeline: dusting of snow overlying 5mm non-supportive rain crust overlying dry, loose, F-hardness snow. Ski penetration 1-2cm. Above treeline: exposed supportive "bomber", smooth rain crust. "Crust of fear"... smooth future avalanche bed. Exposed rain crust seen up to 8,000ft. Ski penetration zero above tree line, pole spike penetration minimal. At treeline: some localized, reactive wind slabs (observed up to 1ft), reactive to ski cuts, overlying rain crust.

Avalanches: None observed, no debris seen.

Dec. 20, 2016, 1 p.m. PST

Region: East Slopes North - Canadian Border to Lake Chelan
Observation by Frank Clements

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Ridge between Pine Creek and Cutthroat Creek approximately 4 miles from WA Pass. Elevation range 3500-5000'

Route Description: Skin track set in old growth timber to sub ridge separating two major creek drainages.

Weather: Snowfall from 12/19 was 12"-16" of low density powder, temps in low 20's and partial overcast with intermittent light snow showers. !2/20 storm total was another 12+" of heavier snow with higher moisture content. Moderate to heavy snowfall most of the day, temps in mid to upper 20's. Strong winds with gusts exceeding 30 mph on ridge, with soft slab developing rapidly. Visibility limited due to weather so could not observe adjacent area for avalanche activity. Snow turning to rain at mouth of canyon near Early Winters.

Snowpack: Hazards observed during descent are associated with low snow coverage prior to this storm cycle. Air pockets between log traps and other features are being bridged over and concealed by storm snow that has not settled out. Tree wells are deeper. Wind event was releasing tree bombs from timber on slopes.

Dec. 18, 2016, 7:52 p.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90

Elevation: Near treeline

Aspect: SW

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: Small 2" thick slabs breaking off of leeward slopes while snowmobiling. Moderate hill about 30 degrees. Location Keenan Meadows

Dec. 18, 2016, 6 p.m. PST

Region: Stevens Pass
Observation by Matt Hartman

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: 1 mile East of Stevens Pass. Elevations between 5,200' and 3,600'. N-NW aspects. AIARE Level 1 with the Northwest Mountain School.

Route Description: Skied treed slopes from 5,200' to 4,200'.

Weather: Calm to Light Westerly winds. Sky overcast with increasing cloud cover through the day. Light snow at times. Temps: High -4c, low -6.5c.

Snowpack: Dug a pit on S-SE aspect at 4,800'. December 8 PWL is getting harder to find in pits, but is still evident down 57cm. ECT test did not propagate, though the December 8 layer failed with a shovel pull after the test was completed across the column. At that spot the weak layer was flat SH. Snow surface was a mix of small SH, DF and PPsd. A light freezing rain crust formed around 11am at that elevation as well, which was very thin.

Avalanches: None. No signs of instability.

Dec. 18, 2016, 3 p.m. PST

Region: Snoqualmie Pass
Observation by Jacob Mandell

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Kendall Trees

Route Description: Gained Kendall Knob, skied below kendall peak and lapped the kendall slide path area towards commonwealth.

Weather: High clouds temps in mid 20's

Snowpack: found a mixture of snow surfaces, depending on aspect and elevation. Found sun crust on S aspects between 3500-5000, and some tree bombs on solar aspects with trees. Found best skiing in open trees on W-E aspects with N aspects having some windloading near ridgetops. Snowpack was right side up and has compacted, PWL was un reactive in tests.

Avalanches: non observed

Dec. 17, 2016, 7:45 p.m. PST

Region: Olympics
Observation by Brian Carpenter

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Mountaineers snowshoe trip to Hurricane Hill

Route Description: Stick to the ridgeline, going "up and over" several bumps and threading between the trees to avoid the SW-facing avvy slopes the summer route crosses

Weather: 19 degrees. cloudy in the morning, sun broke through around 1300 and got progressively clearer as the day went on. Not much wind except a few mild gusts on top of HH.

Snowpack: 15-20cm or more of unconsolidated snow in most places along our route. a few pockets of wind slab on the ridgeline. lots of riming on SW side of trees. Found some faceted crystals and SH in a sheltered spot but in the afternoon the sun was melting the surface so mostly melted rounds and precip particles. Did not have time to do a pit. Cornices on the east side of the ridge that leads out to HH but the well-traveled snowshoe/ski route keeps to the left/west of them.

Avalanches: None spotted. Watched three backcountry skiers do the first turns on the south side of HH without incident. Saw aftermath of shallow slab avalanche on SE facing side-slope of the ridgeline we were following. It occurred on a slope lower than and not connected to the ridgeline route.

Dec. 17, 2016, 11 a.m. PST

Region: Snoqualmie Pass
Observation by Ole Bond

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Route Description: Up the skin track to pineapple pass, returning through the chute on skiers right.

Snowpack: Surface hoar present

Avalanches: Triggered small slabs, dinner table sized, about 50mm thick, in the trees midway between Source lake and Pineapple Pass. Use caution as additional snow builds up.

Dec. 16, 2016, 5:39 p.m. PST

Region: Stevens Pass

Elevation: Near treeline

Aspect: SW

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Comments: South/southwest side of lichtenberg touring. Afternoon saw lots of sun, it was almost like spring skiing but colder. With the afternoon sun we saw human triggered and non-human triggered, small, loose slides. Slow moving and non-destructive, isolated. On the steeper slopes near the summit down to tree line

Dec. 16, 2016, 2:40 p.m. PST

Region: Mt Hood

Elevation: Near treeline

Aspect: SW

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: Propagation on closed terrain at SkiBowl (Tom & Dick). Looked clean up top, but halfway down found break approx 25 feet long & 4-6" deep.

Dec. 16, 2016, 1 p.m. PST

Region: Snoqualmie Pass
Observation by Bryan Lobel

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Alpental Valley backcountry.

Route Description: Pineapple Basin ski tour, north to northeast aspects from 3240' to 5200'.

Weather: Clear to partly cloudy, calm winds, 10 degrees F.

Snowpack: Powder snow from parking at 3240' to bench at 4450'. Firm, wind and / or sun-crusted snow with 5 inches of powder on top throughout Pineapple Basin from 4500' to 5200'.

Avalanches: No avalanche signs - no whoomping, shooting cracks, settling, or debris noted, even below steep couloirs north of the Tooth. However, extensive hoar frost was noted throughout Pineapple Basin.

Dec. 15, 2016, 2 p.m. PST

Region: West Slopes North - Canadian Border to Skagit River

Elevation: Near treeline

Aspect: SW

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: With heavy skier impact all terrain bomb proof

Dec. 15, 2016, 10 a.m. PST

Region: East Slopes North - Canadian Border to Lake Chelan
Observation by Drew Lovell

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: WA Pass Environs

Route Description: Various

Weather: Cold!

Snowpack: The 12/8 interface is easily discernible, visually in pit walls, as well as in tests. It is generally down about 35 - 50cm, depending on aspect and elevation. Over the past few days, it has been unreactive to ski testing and has not produced results in column tests on a variety of aspects. Grain type seems to be mostly DF's overlying small faceted grains. Many skiers have travelled steep terrain in the Above and Near Treeline zones over the past week with no signs of instability at the 12/8 interface. It is worth noting that there is little to no travel by backcountry skiers happening below approximately 4000' due to lack of snow. Of concern is the potential return to zonal flow and normal temps. after the weekend. Snow surfaces at all elevations and most aspects throughout the area are very weak. Depending on aspect, it is a mixed bag of small SH, large DF's, NSF's and very weak crusts. Incredible skiing, for now...

Avalanches: No recent activity observed, other than skier and solar initiated Dry Loose and very small, isolated WindSlab on 12/14 that was reactive to ski cuts. Older WindSlab that formed on 12/10 in the alpine is buried and unreactive to skiers.

Dec. 14, 2016, 4:30 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by Alexander Pelman

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: Cement Basin, Union Basin area near Crystal Mountain. Tests: ECTN14 @ Dec 8 layer of NSF (appx 2mm) on a pit dug on a 33 degree slope, SW aspect (228 degrees) in an open area between trees. Observations:

Route Description: Tour of East Peak, Union, Cement and Lake Basins via Bullion Basin.

Weather: 12F, 10-35mph sustained E'ly winds, gusts to 50mph on the ridges. Light snow showers, overcast skies. Active wind transport, scouring and loading.

Snowpack: Widespread well formed (up to 1cm) surface hoar observed on all aspects between 4400' and 6600' except on E'ly aspects near ridges where wind transport had effected snow surface. Thin (1-2cm) sun crust on steep south facing aspects. Dug down 1m in several locations below ridges, revealing F to 4F from surface to 60cm, then 4F+ to 100cm below surface. The Dec 8 layer is easily observed @ 45cm below surface. Hasty pits revealed generally low density snow without any distinct shear between layers throughout the top 60-80cm except where windslab was observed (on SW thru NE aspects above 6600' and near ridges).

Avalanches: We triggered two small avalanches on the NE aspect of the unnamed peak immediately south of Norse Peak, @ appx 6600'. Both were intentional and released while ski cutting. Both were recently formed wind slabs with appx 6" crowns. (SS-ASc-R1-D1). Looking across Cement Basin, we observed a 1'-2'crown, flank and debris field near ski tracks on the SW aspect of Lake Peak. Possible skier trigger or remote trigger of cross-loaded terrain feature? No party was observed in that area during our tour, so this may have occurred 12/12 or 12/13.

Dec. 14, 2016, 2 p.m. PST

Region: Snoqualmie Pass

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Humpback Mtn, north slopes, 4800ft

Weather: Cold, gusty winds, large contrails coming off summit ridge.

Avalanches: Several small naturals below ridgetop, NW slopes, rapidly loading.

Dec. 14, 2016, 12:30 p.m. PST

Region: Stevens Pass
Observation by Dan Veenhuizen

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: East Bowl of Rock Mountain

Weather: Mostly sunny, E winds 10-20mph, air temp around 5 degrees F.

Snowpack: HS 120-140cm at 6400', NE aspect. Surface form was 2-3 mm PPsd, and some SH (widespread SH between 3,000 and 5,000'). Top 20cm was F hard PP/DF, next 20cm was 4F DF's, and rest of pit was 1F sintering DF and rounds. There was no PWL observed. CTM BRK (x2) @ 25-30 cm's down.

Avalanches: Observed old (24-48 hour) shallow (10-20cm) wind slab crowns, D1's. Rapidly building, shallow, sensitive wind slab in lee areas. Many loose dry D1's in steep terrain.

Dec. 14, 2016, noon PST

Region: West Slopes South - South of I-90 to Columbia River

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Bullion Basin

Weather: Cold with light snow and strong E ridgetop winds.

Snowpack: Skied SE slopes into Union Creek and NE back into Bullion Basin. No signs of instability observed. Some facets observed on current snow surface that may cause issues as they get buried. Strong ridgetop winds driving snow transport and may support windslab formation

Avalanches: None.

Dec. 14, 2016, 11:11 a.m. PST

Region: Stevens Pass

Elevation: Below treeline

Aspect: SW

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: Tunnel Creek, snow has been sunaffected.

Dec. 14, 2016, 11:05 a.m. PST

Region: Stevens Pass

Elevation: Below treeline

Aspect: SW

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: Tunnel Creek, snow has been sunaffected.

Dec. 13, 2016, 3 p.m. PST

Region: Snoqualmie Pass
Observation by Anna Condino

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Kendall Trees and Peak; Source Lake and Snow Lake

Route Description: Did two separate tours today - up to Kendall Peak via the main S facing ridge, and then up to the col between Snow and Source Lakes via the usual trail from Alpental base.

Weather: Undercast mist/cloud, temps mid 20s, calm winds, no precip

Snowpack: Nice dry snow layer on top with 1 ft ski pen, 2 feet boot pen on the generally southern aspects we skied/skinned. No signs of instability - no observed avalanche activity, no whoomping/cracking, hand pits had no results, no sensitivity in skin track. Yay!

Avalanches: None

Dec. 13, 2016, 12:45 p.m. PST

Region: Stevens Pass

Elevation: Above treeline

Aspect: SE

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? Yes

Comments: large slide seen on the steeper convex of Highland bowl. skier triggered

Dec. 13, 2016, 12:15 p.m. PST

Region: Stevens Pass
Observation by Olivia Race

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Susan Jane Peak

Route Description: 4000'-5578' Skied W - N - NE aspects

Weather: Clear, L E winds, cool temps

Snowpack: HS @ 5578' = 165 cm Some pinwheeling observed on 30+ degree solar slopes. @ 5375’ NW slope - Observed 4-5 mm SH down 60 cm under 3 cm thick P wind layer. The SH appeared to be laid over and was not reactive. Ski Pen 45 cm.

Avalanches: Unobstructed views of all mountains as far as Glacier Peak revealed no avalanche activity.

Dec. 13, 2016, 11:15 a.m. PST

Region: Snoqualmie Pass
Observation by Jere Burrell

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Alpental, Source Lake, Pineapple Pass

Route Description: Followed an established skin track up the South Fork Snoqualmie near Source Lake then ascended switchbacks south west towards Pineapple Pass.

Weather: At the Alpental upper parking lot- Time: 0930, Temp: -8c, Wind: calm, Sky: valley fog between 3,600 and 4,400' @ 4,800' near Pineapple Pass- Time: 1115, Temp: -7c, Wind: calm, Sky: clear with valley fog below at approx 4,400'

Snowpack: North facing 22 degree slope @ 4,800' H.S. 169cm, Ski Pen 24cm CTM @ 30cm down ECTN17 BRK @ 30cm down A strong temperature gradient at the surface, air temp -7c/ surface temp -17c, produced 3mm surface hoar through out this area. Great snow quality and only a few tracks.

Avalanches: Below Bryant Peaks south ridge on a N.E. 40 degree slope below cliffs, maybe natural trigger from falling snow, 2-3 days old, SS-N-R1-D1.5-15cm x 30m x 65m

Dec. 12, 2016, 1:50 p.m. PST

Region: Mt Hood
Observation by Heiko Stopsack

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Below the A frame on the ridge line above Tilly Jane Crk.

Route Description: Right of trail 300 ft.

Weather: Clear to 1/4 coverage + calm winds

Snowpack: Total snow depth 185cm. Pit 105 cm ECTX CT16Q2 @ 60cm New storm snow through majority of pit. If not to ground. Fist all the way through pit. 4f @ 15cm to 10cm. Small change in hardness but decided t call it 4F. Sorry no temps and loop broke while banging on the crystal card. New study kit from Santa ??

Avalanches: None. On another ridge line on it's leeward aspect N- NE. In safe terrain. Small (very) wind slabs easily broke, as I skinned across them.

Dec. 12, 2016, 1:50 p.m. PST

Region: Mt Hood
Observation by Heiko Stopsack

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Below the A frame on the ridge line above Tilly Jane Crk.

Route Description: Right of trail 300 ft.

Weather: Clear to 1/4 coverage + calm winds

Snowpack: Total snow depth 185cm. Pit 105 cm ECTX CT16Q2 @ 60cm New storm snow through majority of pit. If not to ground. Fist all the way through pit. 4f @ 15cm to 10cm. Small change in hardness but decided t call it 4F. Sorry no temps and loop broke while banging on the crystal card. New study kit from Santa ??

Avalanches: None. On another ridge line on it's leeward aspect N- NE. In safe terrain. Small (very) wind slabs easily broke, as I skinned across them.

Dec. 11, 2016, 7 p.m. PST

Region: Stevens Pass

Elevation: Below treeline

Aspect: S

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: ct 16 M rp. no sign off mentioned weak layers in test pit on slope above Stevens North lot. only skied short sections between switch backs. great snow !

Dec. 11, 2016, 7 p.m. PST

Region: Stevens Pass
Observation by Matt Hartman

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: AIARE Level 1 with the Northwest Mountain School. Skyline Ridge.

Route Description: Skinned up from Stevens Pass to top of Skyline and descended low angle meadows back to Pass.

Weather: Sky: Overcast Wind: C-L from West Precip: s-1 to s-2 through day

Snowpack: Rightside up. 195 HS at 5100'. Upper snowpack is a mix of facets and decomposing fragments. No SH observed. Cornices near windloads on S facing slopes near 4600' feet were touchy. CT tests were moderate to easy in upper snow pack, RP and BRK. ECT P 17 over two steps with little energy. See photos for pit and ECT results. Hazard was Considerable at all aspects and elevations for winslabs and storm slabs. High hazard was not observed close to Pass summit where SH was not likely due to consistent winds during the last storm cycle.

Avalanches: none.

Dec. 11, 2016, 7 p.m. PST

Region: Stevens Pass
Observation by Matt Hartman

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: AIARE Level 1 with the Northwest Mountain School. Skyline Ridge.

Route Description: Skinned up from Stevens Pass to top of Skyline and descended low angle meadows back to Pass.

Weather: Sky: Overcast Wind: C-L from West Precip: s-1 to s-2 through day

Snowpack: Rightside up. 195 HS at 5100'. Upper snowpack is a mix of facets and decomposing fragments. No SH observed. Cornices near windloads on S facing slopes near 4600' feet were touchy. CT tests were moderate to easy in upper snow pack, RP and BRK. ECT P 17 over two steps with little energy. See photos for pit and ECT results. Hazard was Considerable at all aspects and elevations for winslabs and storm slabs. High hazard was not observed close to Pass summit where SH was not likely due to consistent winds during the last storm cycle.

Avalanches: none.

Dec. 11, 2016, 4 p.m. PST

Region: East Slopes South - South of I-90 to Columbia River
Observation by Shane Robinson

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: East Peak near Crystal Resort

Route Description: Toured up westerly aspects of east peak and generally skied down our up track. Moderate ski traffic there today and no parties reported any avalanches or sluffing.

Weather: Snow showers in and out today up to S3 at times with calm to light winds out of SW.

Snowpack: CTM with sudden planer results 55cm down in a sheltered location at 6100'. Test repeated several times as part of an AIARE 1 course. Saw little other signs of instability today, except one small pocket (see below) and several ski parties reported no avalanche activity. Most of this slope showed signs of sun and wind effect with a more settled and shallow snowpack. Generally boottop light, dry snow over a more supportable layer. Also, planer moderate results 15cm down on shovel tilt tests.

Avalanches: One avalanche observed on shoulder of Bluebell. D1, natural (possible treebomb trigger), wind slab, unsupported slope above a cliff. Probably happened Saturday morning.

Dec. 11, 2016, 12:19 p.m. PST

Region: West Slopes North - Canadian Border to Skagit River
Observation by Mike

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: Heather Meadows 4300' / 230º aspect

Weather: S1 / Full cloud cover

Avalanches: Triggered a soft slab on an unsupported roller. F hard slab broke 32cm down on a 4f bed surface

Dec. 11, 2016, 11:30 a.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90
Observation by Nate Hough-Snee

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Ascended just above Marion Lake to the West.

Weather: Broken sky, light snow, moderate westerly wind transporting snow, cool temps.

Snowpack: Took a walk to the basalt-induced treeline adjacent to Mission Ridge to see how the recent snow and wind affected the snowpack. A representative pit found right side up snow on a sheltered, east facing slope ~32-degrees ~5600' elevation. 120 cm total depth. 120-90 cm - fist 90-75 cm - four fingers 75-5cm - one finger 5-0cm - fist - unconsolidated facets overlay loose rock. ECTX on density change between Friday and Saturday snow. Shovel shears showed distinct density changes between Friday and Saturday storms. While the snow around treeline and in sheltered areas seems to be right side up, the devil is in the details. Just above the pit, I found some chalky wind slabs 10-35 cm, that led to shooting cracks over shallower snow when treaded upon. An easterly test slope popped but did not propagate over a shallow, weak base with underlying rock/facets. A continental, early-season look to the snowpack around Mission Ridge. In summary, east-facing slopes range from green light (where it's deep enough) to thin and rocky or hard and loaded. Anywhere with persistent wind is a combination of scoured out or slabbed up. As high pressure builds, existing wind slabs and probable future near surface faceting may provide tricky surfaces for the next storm cycle to fall upon. The key words on the far east slope are shallow and heterogeneous.

Avalanches: None

Dec. 11, 2016, 11 a.m. PST

Region: Snoqualmie Pass
Observation by Jean Ruggiero

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Went back to Hyak for a few runs in the morning. Ski area still closed.

Route Description: Skied runs on the northeast slopes of Hyak Mtn, N and NE aspects. All below tree line.

Weather: Moderate to heavy snow, cold in the morning and warming slightly throughout the morning.

Snowpack: Storm snow from last night deposited approximately 6-8" of new snow. Approximately 1-1.5" of new snow fell between 9-11am. Snow from last night's storm was noticeably more dense than the snow from the Friday night storm. The snowpack is shallow enough that it is still well anchored at Hyak.

Avalanches: No avalanches seen while we were skiing but we noted one small loose dry point release on the side of the highway on the west side of the pass near the summit on the way up. Likely triggered by snow falling off a tree. No other signs of instability noted.

Dec. 11, 2016, 11 a.m. PST

Region: Olympics
Observation by Douglas Terry

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: 40-45 Degree slope, east facing. 2 sessions of 4 inches of snowfall had occurred within the past 24 hours atop the previous snow base. At 4250, at 21:00 on 12/10/17, wet snow was falling at Lake Angeles below.

Route Description: Trail buried in snow and the affected area had no canopy overhead. 50 feet below a parallel ascending ridgeline. No loose snow, nor pinwheels had been observed. We knew we were in slide territory and proceeded carefully.. Electing to stop sidehilling along the trail and make straight for the ridge, uphill slogging was up to the chest and very slow. Another member opted to angle up, and then switchback to the ridgeline with wide high ascend turns to prevent undercutting our route below. Switching back above the path we broke below triggered the slide that filled the area we had just blazed.

Weather: Overcast with occasional flurries.

Snowpack: Perpendicular to surface depth over 4 feet; not measured.

Avalanches: Slab. with clearly visible layers. All trip and avi photos are located at: https://www.meetup.com/Kitsap-Outdoors/photos/27483119/

Dec. 11, 2016, 10 a.m. PST

Region: West Slopes South - South of I-90 to Columbia River

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Crystal Mountain, Bullion Basin Area

Snowpack: (We did not set foot on north aspects so have no relevant observations for the aspect on which we saw activity)

Avalanches: We observed two SS/N/D1 avalanches on north aspects, one @ 5,800 feet and the other around 6,100 feet.

Dec. 10, 2016, 4 p.m. PST


Observation by Jean Ruggiero

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Dec. 10, 2016, 4 p.m. PST

Region: Snoqualmie Pass
Observation by Jean Ruggiero

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Skied several runs in the Hyak ski area, which is still not open for the season.

Weather: Sunny/broken clouds in the morning, light snow after noon increasing to heavy throughout the afternoon.

Snowpack: Storm snow from Friday night's storm had formed a cohesive slab about 5 inches deep. New snow falling this afternoon was heavier than the snow deposited by the storm Friday night. A rain crust exists about 2 ft below the surface of the snow.

Avalanches: None seen.

Dec. 10, 2016, 2:25 p.m. PST

Region: West Slopes Central - Skagit River to South of I-90

Elevation: Near treeline

Aspect: N

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: At Crystal, Bullion basin, North of point 6479, looking from the north just below East peak, we identified a cracked slab that has not fallen yet. Two pictures, one zoomed out for perspective, another zoomed in with crack visible, perhaps 30 yds long.

Dec. 10, 2016, 2 p.m. PST

Region: West Slopes North - Canadian Border to Skagit River
Observation by Dustin Byrne

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Working a AIARE 1 course, dug pits at roughly 5k.

Weather: Light to moderate snow, moderate W winds

Snowpack: Found buried NSF 30-50cm down. Moderate CT results. ECT's showed propensity to propagate with failures crossing columns in 1-2 loading steps. Another team in a more sheltered location found more intact buried surface hoar.

Dec. 10, 2016, 12:33 p.m. PST

Region: East Slopes North - Canadian Border to Lake Chelan
Observation by SKIER-X

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: S. Hairpin Valley , Wa. Pass , N.C. Hwy. 20. Wa.

Route Description: Parked at gun mount . Ascended valley bottom via E.R. La Chapelle safe rt. , at toe or beyond avy. run out zones. NOT " Modern Guide Rt." , Up " Pete's Wailing Wall" old growth trees , past "Skier B's" cut , to alpine bowls. 5 skier sleds parked in Spire Gulch "Red Zone" at hairpin !

Weather: Mod. to heavy snow , intermittent , good visibility , 20deg. ,light winds increasing at 12:30 to moderate. Increasing heavy snow fall by evening.

Snowpack: 2.5 ' ski pole and boot penetration . Knee deep trail breaking . Facets layer down 70 cm . Recent snow , sloughing with skiers during decent . Still air pockets and hidden bridge failures. , BEWARE , very large , dangerous , loaded tree bomb hang fire in the area ! ... Deep tree wells.

Avalanches: Many natural soft slab failures from point releases on cliff faces , cornice fall , and on loaded convex rollovers down to below tree line on E. to NE. aspects , approx. 12" crowns. Tree bombs did not cause slab propagation below tree line .

Dec. 8, 2016, 2 p.m. PST

Region: Stevens Pass

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Skyline ridge social trail to the peak of the knob.

Route Description: Took the sucker route to the top. and traversed around the east/south side.

Weather: Broken skies, clear on the hill and cold. Winds were strong easterly.

Snowpack: Ski cuts at 5200' and above showed widespread windloading into slabs on westerly slopes. Clean shear on 5-10" slabs when isolated in pits on 35 degree southwesterly slopes. Skied today in compacted terrain, but indicative of heavy wind loading above and around treeline. One plus side is the rime and wind look to have jacked up any surface hoar that might have formed during the recent cold and clear nights.

Avalanches: None observed.

Dec. 8, 2016, 12:30 p.m. PST

Region: Stevens Pass
Observation by Olivia Race

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Backside of Cowboy Ridge - Tunnel Creek Zone

Route Description: Elevation Range = 5800' - 4800' on backside Cowboy Ridge.

Weather: No Precip, broken sky, pleasant in the sun on the south side of the ridge, frigid on the ridge top w/ strong easterly winds.

Snowpack: Sun crust developing on S aspects. ~ 1.5 cm thick but still skiing well. Wind transported snow made for variability in where the crust was/was not exposed. Of note despite the extended period of cold temps we did not observe SH formation in any of the areas we skied (including N. Aspect untracked snow above ski area). Avg HS 130-150. Dug snow profile @ 5190'. Defined temperature in upper 50 cm of snowpack. Right-side up snowpack structure. No repeatable results for snowpack tests.

Avalanches: We released a very small wind loaded pocket on top of the sun crust (@~ 5,000'). This was a very clean shear and is interesting when thinking of the new snow loading that crust.

Dec. 8, 2016, noon PST

Region: Snoqualmie Pass
Observation by Matt Primomo

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Route Description: Slot Couloir, Snoqualmie Peak

Weather: Cold and blustery. Partly cloudy with long range visibility most of the day. E'ly winds forming steady plumes off ridgelines and redistributing the low density cold snow on all but the most sheltered slopes at and above treeline, all aspects.

Snowpack: HS varies from 100cm to 200cm with a generally stable structure...at the moment. The surface ranges from medium sized surface hoar overlying a thin sun crust on S'ly to SH and near surface facets on N'ly. Many places observed are already covered by a thin skin of wind broken particles, and where this layer was thick enough to be cohesive (10cm or so) was touchy and fracturing when provoked. I was able to check this layer out in many places easily with quick hand pits, and even in areas with active loading, the low density (F) layer of 1-2mm NSF remains present more frequently than not. We decided to take the longer route over Col 4850 back to avoid a potential encounter with a recent wind slab at the top of the often used "exit notch".

Avalanches: None observed today.

Dec. 7, 2016, 7:30 p.m. PST

Region: Snoqualmie Pass
Observation by Jeremy Allyn

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Chair Peak and Snoqualmie Divide

Route Description: Various runs between 5600ft and 3700ft, E-SE aspects. Accessed via "winter route" to Source Lake.

Snowpack: Ski pen remains 40-45cm with an average HS over 200cm in upper TL. Favorable density profile in old HST down to 1m. Lots of deep holes and voids in the snowpack remain. Of note was a 1 cm temp/sun crust on steep, solar terrain above Source Lake that was capped by 3-5mm surface hoar and/or a thin layer of low density snow from recent flurries. This "zipper crust" was a bit variable at TL (but skied well) and especially prevelant in open, steeper terrain and higher start zones. Once buried, I would expect to this interface to be reactive on steep terrain.

Avalanches: One D1 Loose Dry in on a steep, NE asp, 5800ft. Some shedding off E face of Chair and solar, cliffy terrain.

Dec. 7, 2016, 3 p.m. PST

Region: West Slopes North - Canadian Border to Skagit River
Observation by Matthew Tangeman

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: S-SW slopes on Mt Herman, Bagley Basin

Snowpack: Pretty solid surface hoar. Only minor down low, but above 5000 feet formed a much more defined crust. Stability was good, the snow skied well enough, but will likely be problematic once new snow falls.

Dec. 7, 2016, 2 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by Alex Ford

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Various runs on N, E & S aspects above ~6000 feet in Lake and Cement Basin East of Norse Peak, Scout Pass, and East Peak in the Crystal Backcountry.

Snowpack: We noted 3-10mm of surface hoar over 10cm of low density snow on all N-E-S aspects we skied Wednesday. In contrast to the observation mentioned in Wednesday evening's forecast, we found widespread surface hoar is both sheltered and unsheltered areas below ridgeline.

Dec. 6, 2016, 5:22 p.m. PST

Region: Stevens Pass
Observation by Matt Hartman

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Highlands Bowl to Mill Creek.

Route Description: Skinned out of the Stevens Pass Ski Area to Highlands Bowl. Descended to Mill Creek.

Weather: Broken to Scattered Sky. Temps below freezing. Winds L to C. No precip.

Snowpack: Dug a pit at 5,000' facing East below Highlands Bowl. Snowpack is rightside all the way to GND. HS 193cm. CTM RP down 35 cm on a density break in HSN layers from the last 3 days. ETC N 15 on the same layer. Solar aspects were warming and isolated, light crusts may form despite cold temps.

Avalanches: None Observed.

Dec. 6, 2016, 11:30 a.m. PST

Region: Snoqualmie Pass

Elevation: Below treeline

Aspect: NE

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: Surface hoar present on all aspects below tree line at Hyak.

Dec. 6, 2016, 8 a.m. PST

Region: Stevens Pass
Observation by Harlan Sheppard

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: SE 5600' Windy MT, 1 mile west of Stevens Pass, near ridgetop.

Weather: Sunny, 18, Calm

Avalanches: SS- D2 / R2- N 6-10" 200' Wide, runout not observed.

Dec. 5, 2016, noon PST

Region: Snoqualmie Pass
Observation by Scott

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: This is a test...

Route Description: Test...

Weather: Test...

Snowpack: Test...

Avalanches: Test...

Dec. 5, 2016, 11 a.m. PST

Region: West Slopes Central - Skagit River to South of I-90
Observation by Alex Ford

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: This is a test submission for Scott Schell from Android, Chrome, Nexus 5X.

Dec. 4, 2016, 8 p.m. PST

Region: Stevens Pass
Observation by Matt Hartman

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: AIARE Level 1 with the Northwest Mountain School. Skykine Ridge.

Route Description: Skinned up the road from Stevens Pass to North aspects at 5200' at ridge top. Descended South to Skyline lake and parking lot.

Weather: Below freezing temps, Winds W, L-M all day. S1 in am to S-1 in afternoon. Broken to overcast sky all day.

Snowpack: Pit at 5200' North facing. 175cm HS. Snowpack is rightside up from the ground. CTH BRK Q3 down 55cm, ECT N 22 down 55cm. Ski pen was 35cm. Boot pen was endless. Small cornices and test slopes were reactive on S facing crossloads around 4500'.

Avalanches: None.

Dec. 3, 2016, 2 p.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Ridgeline north from Big Hill cabin. NE facing slope.

Route Description: Climbing Ridgeline toward Big Hill.

Weather: Clear. Increasingly windy as strong weat her system moved in.

Snowpack: Seemingly very stable. No release of wind load slabs while ski cutting north facing slopes.

Avalanches: None. Loud whumpfing noise while climbing ridge on heavidly wind loaded pillow. No lateral movement. No shooting cracks.

Dec. 3, 2016, noon PST

Region: Olympics
Observation by Sam Luthy

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Hurricane ridge , Maggies pullout to west flank of Mt Angeles

Route Description: Traverse along sunrise ridge from Maggies to the west flank of Mt Angeles. Exit to road just above the switchback trailhead.

Weather: Partly cloudy. Temps in the upper 20's. Visibility to the horizon.

Snowpack: The warming trend during the afternoon of 12/2 resulted in a 1cm thick surface crust on all aspects up to 5600 ft. This crust is capping cold powder snow of 4F hardness. No pit was dug today, but several HS measurements were taken along the route with depths of 1.2 - 1.5 m on E to NE aspects and similar depths on the west slope of Mt Angeles. Skiing was challenging today with the snow conditions and this crust may be a layer to watch for after the next storm cycle.

Avalanches: None

Nov. 30, 2016, 5 p.m. PST

Region: Stevens Pass
Observation by Matt Hartman

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Stevens Pass Backside in non-controled inbounds terrain that is closed to lift traffic. 5500' to 4000', E-SE.

Route Description: Skinned up fronside of resort and did several laps on the backside.

Weather: s 1 to s-1 most of the day. Winds from the West incresed as the day went on to about 20 mph (approx)

Snowpack: Rightside up, between 60-100cm deep in drifts. Windslabs wwere rapidly forming around 2 pm and on. Ski quality from 5500' to around 4700' is excellent.

Avalanches: no.

Nov. 30, 2016, 2:30 p.m. PST

Region: West Slopes North - Canadian Border to Skagit River

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: Blueberry chutes, nw aspects above Bagley Lakes

Weather: 30 degrees, snowing lightly, mediocre visibility

Avalanches: 3 small skiier triggered wind slabs on nw aspects. Larger slide was 60' wide and ran out 100'. All in new storm snow from the last ~24 hours.

Nov. 28, 2016, 11:55 a.m. PST

Region: West Slopes North - Canadian Border to Skagit River
Observation by Jere Burrell

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Northwest aspect on the lee side of a tree band approximately 65' down slope. Slope angle was 25 degrees.

Route Description: Artist Point summer road

Weather: Overcast, light winds and S-1 snow

Snowpack: This was performed on a N.W. 25 degree slope @ 4,600' HS 217cm, HST 30cm, pencil hard layer 115cm down CTM19-RP-Q2-115cm down

Avalanches: This old avalanche was observed after descending into Bagley Lakes Basin. The debris was covered by a layer of new snow. Steep slope near Artist Point @ 5,050', N.W. 48 degree slope below a convex roll R2/D1.5-SS-N- <30cm x 24m 550' vertical

Nov. 26, 2016, 2 p.m. PST

Region: Mt Hood
Observation by Heiko Stopsack

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Barrett Spur

Route Description: Trail 630 then to Spur.

Weather: 45 F below 5500. 30-32 approx. Snowing lightly above 5500 , Overcast progressing to clear skies. Except for Mt Hood which was clouded in and winds 15 -20 with gusts. Snow transport visible at treeline and above.

Snowpack: Hasty pit CT14 Q2-3 at 50cm.

Avalanches: None.

Nov. 26, 2016, 1 p.m. PST

Region: Olympics
Observation by Sam Luthy

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: S to SE facing runs above the Maggies pullout on hurricane ridge road.

Route Description: Lookers left skin track to ridge top above Maggies face, along ridge top to the bowling alley. Skied glades up to 30 degrees back to road

Weather: Snowing moderately 1/2"per hour, overcast 1/4 mile visibility

Snowpack: Pit dug on E face at 5400 ft with heavy wind deposits. HS 155cm. Unconsolidated fresh over 55cm of 1F to a 4F transition on older unconsolidated snow from Friday / Saturday. Isolated column showed results at 55cm CT6 Q3. And the column collapsed at CT 22 with multiple fractures down to 120cm. ECT showed no propagation on any layer . Unconsolidated loose snow seams to be the major concern on S SE faces.

Avalanches: Unconsolidated snow sluffs, no propagation or slides triggered on slopes skied. Did not venture into N NE slopes where wind slabs may be present. Large cornice formation on ridge top.

Nov. 26, 2016, 11 a.m. PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by Brian Carpenter

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Nisqually Vista trail near Paradise

Route Description: summer trail route

Weather: Cloudy, some snow showers, fairly warm

Snowpack: 1cm thick ice crust on top of the snow, then unconsolidated snow under that for about 2-3'. Was busy setting route marker poles so did not have time to look at the new snow falling on the ice crust. When breaking trail in snowshoes I would break through the ice crust and sink into the unconsolidated snow underneath.

Avalanches: none

Nov. 25, 2016, 4:30 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by Jeremy Allyn

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: East Peak, Crystal Mt BC

Route Description: Short tour to East Peak, W asp trees, accessed via south shoulder above Bullion Basin.

Weather: Slight warming trend and lull between storms

Snowpack: HS above 5500ft variable in depth maxing out at 80cms in wind protected terrain near TL. Ski pen to 20-40cm, boot pen typically to the ground. Recent storm snow slightly upside down due to warming and wind. Some clean shears at 20cm within the HST that should settle out quickly. Minor surface cracking to 10cms in wind affected terrain. Fresh and tender cornicing off ridgecrest above Cement Basin. Ski quality good at TL and fair BTL

Avalanches: None observed

Nov. 25, 2016, 4 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by Shane Robinson

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: Ski the backcountry of south of crystal ski area and then worked up to the king and down the north aspect. Skied three runs of northerly aspect in the 7000-5800 range.

Route Description: 3-way peak environs and the King via Crystal resort.

Weather: Cloudy with poor vis and very light snow snow showers all day. Winds increased from very light to light with moderate gusts.

Snowpack: Mostly a thick and supportive northwest base. HS averaging 125 can above 6000' with deeper pockets and some bare wind blown knobs. Isolated pockets of wind slab in loaded and leeward aspects along ridges, but a fair bit of variability. Much more present on the king than 3-way.

Avalanches: D1.5 skier triggered wind slab with an approximate 12" crown the propagated 20m wide and ran fast full length of about 100m in vertical length.

Nov. 25, 2016, 1 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River

Elevation: Above treeline

Aspect: NE

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Comments: several slides, triggered from ski cutting on specific and isolated terrain features at 30 to 40 degrees. slides propagating easily and fast moving. crowns approximately 8-12 inches. R3/D3

Nov. 25, 2016, 1 p.m. PST

Region: West Slopes North - Canadian Border to Skagit River

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: North West face of Slate Peak

Weather: 30 degrees sunny with spotty clouds.

Snowpack: around 4 feed and windblown in some places.

Avalanches: Ski triggered wind slab/cornice slide. Ranging from 2-8 feet in depth where it broke off the ridge. About 200 feet wide at the top. No no one was caught or injured.

Nov. 24, 2016, noon PST

Region: East Slopes North - Canadian Border to Lake Chelan
Observation by SKIER-X

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: 5 bowls S. of Wa. pass hairpin , N.C. hwy. 20 , WA , N. E. facing bowl 7000ft. Open alpine ringed with steep snow to rock faces.

Weather: Mid.20s , Steady moderate snowfall. Lt wind in valley floor. 20mph wind in the alpine gusting higher on exposed ridges. Easterly flow.

Snowpack: Approx. 8" new storm snow , soft in valley , Forming sensitive wind slab in the alpine. The wind is rapidly affecting the new and upper snowpack in the alpine.

Avalanches: R3 D2 wind slab. Approx. 8" crown , start zone just below cliff face. 150' wide , running 300' . Fresh , probably this morning as there was not much new storm snow filling in yet.

Nov. 24, 2016, 10 a.m. PST

Region: West Slopes South - South of I-90 to Columbia River

Elevation: Near treeline

Aspect: W

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: Great skiing above 6k! Storm slab began to be reactive above 6.4k on 35-40 degree aspects. No slides triggered but cracks in top 6-8 inch slab and easy failure with isolated column. Ski cut did not trigger slide. Lapped 30-35 degree N/nw aspects from 5.8-6.2k with no slab activity and pleasant skiing.

Nov. 22, 2016, 1 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by Dennis D'Amico

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Chinook Pass

Route Description: PCT to ski NE facing bowl south of Naches Peak proper

Weather: Overcast with very light snow, cloud ceilings lowered below the peaks by early afternoon.

Snowpack: HS 69 cm at 5600 ft. 25 cm of increasingly dense snow, 1F to 4F, over a rain crust and melt forms/crusts from previous warm-ups below to ground. Snow skied surprisingly well given the shallow snowpack. Rocks and trees were manageable and the snowpack dropped off quickly below 5000'.

Nov. 19, 2016, 1 p.m. PST

Region: West Slopes North - Canadian Border to Skagit River
Observation by Herb Butterfield

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: SouthWest Aspect, 4700'

Weather: Overcast and gently snowing

Snowpack: 2'

Avalanches: None

Nov. 18, 2016, noon PST

Region: West Slopes North - Canadian Border to Skagit River
Observation by Tim Hawkins

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Mount Baker Backcountry, along the first part of Ptarmigan Ridge.

Weather: Hi Cloud layer, started at several degrees below freezing at sunrise, rose up to just above freezing at around noon.

Snowpack: We dug a pit and reached rocky ground at about 1.5 feet. No instability. Could distinguish the snow from the day before, but it was sticking to previous snow very well.

Nov. 18, 2016, 11:46 a.m. PST

Region: West Slopes North - Canadian Border to Skagit River
Observation by Mike

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Up to Artist Point

Route Description: Road

Weather: Full cloud cover

Snowpack: HS - 47cm at Artist Point

Nov. 17, 2016, 11 a.m. PST

Region: East Slopes North - Canadian Border to Lake Chelan
Observation by SKIER-X

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: 3 bowls S. of Spire Gulch , (hwy. 20 hairpin) N.C. hwy. WA. E. facing , 5000' - 6500' . Lg. bowl necking down to hourglass gully to fanned out deposition zone to valley floor.

Weather: 28deg. , broken clouds , intermittent lt. flurries , good visibility.

Snowpack: Top 30 cm. lt. newer storm snow , not wind affected , on lt. thin crust on 35 cm. soft heavier snow , bonded to a strong 1 cm. well frozen granular crust layer on approx. 25 cm . old compressed snow. Total approx. 1 meter @ 6000' ft. level.

Avalanches: R3 , D3+ , Ran from high in bowl through hourglass , stopping 200 meters from creek bottom. Lg. 1 -2 meter blocks . Appears to have run during previous warm event as the newer 30 cm. of storm snow was intact.

Nov. 16, 2016, noon PST

Region: West Slopes North - Canadian Border to Skagit River
Observation by Alex Stoll

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Popular early season touring area on Western side of Heliotrope ridge. Near point/ridge known as the "lightning rod" which separates the main area from the Grouse Creek drainage.

Weather: Clouds rolling in and out, very light wind. Few light snow flurries.

Snowpack: Consolidated enough base below permanent snow allowed worry free skiing. Windblown from Tuesday with convexities holding only a few inches of the new snow and concavities holding closer to a foot or eighteen inches, somewhat wind-packed. Some cracking was noticed when skiing steep loaded pockets.

Avalanches: Partner triggered a 80 ft wide, few inch deep dry slab at the apex of a steep wind-scoured rollover. Slab ran length of short slope ~100ft. Skier noticed and outran slide, though the debris was only about a foot deep at the bottom of the short slope.

Aug. 5, 2016, 6:05 p.m. PST

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: 8wm

May 30, 2016, noon PST

Region: Mt Hood

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: South side of Hood. Illumination Rock - east side. 9600' approx.

Weather: Bluebird Warm.

Snowpack: See photo. did not dig pit.

Avalanches: See slide in photo. Note sure what day this happened. I would think in the last 48 hours. There were no slides seen anywhere else.

May 14, 2016, 9:30 a.m. PST

Region: East Slopes North - Canadian Border to Lake Chelan

Elevation: Above treeline

Aspect: N

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: Deep wet slab Avalanche into Blue Lake basin.

May 7, 2016, 2:31 p.m. PST

Region: West Slopes North - Canadian Border to Skagit River
Observation by Nikolaj Lasbo

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: The bowl to the Northwest of Cutthroat Peak

Route Description: Traveled from Hwy 20 along the PCT for a little bit before traveling up the drainage to the snowfield below Cutthroat Peak. Spent the day skiing the couloir in the middle of the bowl and above that area.

Weather: Clear and in the 80s.

Snowpack: Around 5-7 feet deep throughout the bowl. Very soft corn snow. Cornices along on north facing of ridgeline.

Avalanches: One debris field already present when we arrived (to right of attached image). At 2:30 p.m., we were at the bottom of the bowl when we heard a loud crack from the top of the ridge to the west of Cutthroat peak. It must have been a cornice breaking, which caused an avalanche. This wet, loose avalanche picked up speed as it was funneled into the narrower terrain below the ridge, and picked up even more snow, and slowed as it opened up into the bowl. Traveled more than 1000 feet into the bowl, where we had been standing earlier in the day.

May 2, 2016, 8 p.m. PST

Region: West Slopes North - Canadian Border to Skagit River
Observation by Lee Lazzara

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: 2-day traverse from Heather Meadows to Glacier Creek TH via Mt. Baker

Route Description: Table Mt>Ptarmigan Ridge>East + West Portals>Park Glacier HW ascent>Boulder Glacier descent w/ traverse into Park Glacier>Mazama, Roosevelt + Coleman Glaciers

Weather: Mostly sunny and warm both days with high clouds evening of 5/2. Moderate to strong E'ly winds up high on Baker 5/1. Winds became S'ly that evening and started working down into lower elevations but lessened in intensity. No significant snow transport observed.

Snowpack: The spx in this area has mostly transitioned to a consolidated, summer spx throughout the terrain. Boot + ski pen vary by aspect and elevation, time of day, freezing level and winds. The highest terrain did not thaw above 10,000' on E>S aspects on 5/2 due to S'ly winds. Many of the large cornices in this area have fallen off but some remain.

Avalanches: No recent avalanches observed. We did see about 8 to 10 slab and loose wet avalanches up to D2 in Above Treeline terrain on NW through E aspects. Occurrence appeared to be during warming events from the past few weeks as bed surfaces and crowns were melted out a bit. Most crowns were 2'-3' deep. All observed avalanches seemed to be triggered by cornice and/or rock fall.

April 30, 2016, 4:45 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by Andy Goodwin

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Avalanches: On Saturday afternoon 4/30/16, a skier triggered a large wind-slab avalanche on a SW aspect of the Mt St Helens crater rim just east of Monitor ridge. The slab was over a foot thick and was Friday snow on any icy crust. Nobody was trapped.

April 30, 2016, 2 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: Crystal mountain southback South ridge on way up to silver king

Weather: Mostly sunny

Snowpack: Spring

Avalanches: Small loose wet on solar aspects and some evidence of small to large cornice failure

April 30, 2016, 2 p.m. PST

Region: West Slopes North - Canadian Border to Skagit River
Observation by Mike

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Glacier Creek Road

Route Description: Glacier creek road to Grouse Ridge up to 7100' on Heliotrope. Descended Grouse creek

Weather: Lots of sun with a few clouds in the afternoon. Light breeze all day above treeline

Snowpack: Frozen in shade below treeline, mostly supportable with some soft sloppy spots above. Good riding conditions at 16:00

Avalanches: Some recent wet slides and cornice fall. Couldn't produce any wet slide activity myself on slopes up to 35º

April 13, 2016, noon PST

Region: West Slopes North - Canadian Border to Skagit River

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: heather meadows area

Route Description: skier's left of the blueberry chutes

Weather: partly cloudy

Snowpack: 6-10" of fresh snow on a rain crust

Avalanches: see attachment

April 10, 2016, 4:33 p.m. PST

Region: East Slopes North - Canadian Border to Lake Chelan
Observation by SKIER-X

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: 1st red zone west of cutthroat rd. hwy. 20

Route Description: Bicyclists on hwy, E 20 .Silverstar to end of plowing.

Weather: Sunny 70 , no wind , pleasant...

Snowpack: Wet , unconsolidated , slushy 16:33

Avalanches: Reported to me , D4 avalanche , 8' to 15 ' deep wall across roadway. Cyclists west of avy. decended E. calf deep slush debris with trees to return to open hiway , E. of red zone. All other cyclists accounted for. Both cyclists , experienced B.C. skiers expressed regret at not having rescue gear and not following safe travel protocol in avy. terrain while climbing. They urged me to post this awareness warning. X

April 10, 2016, 1 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by Luke Humphrey

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Wet slides on the Nisqually chute, (2, about 1/2 way and 2/3rds of the way down) apparently happened Sat. 4/9.

April 9, 2016, 10 a.m. PST

Region: Stevens Pass
Observation by Martin Bravengboer

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Surprise Gap

Route Description: Standard route to Surprise Gap

Snowpack: Icy crust on some softer snow due to north-facing run-out area.

Avalanches: I did not see the trigger, but presumably this was a cornice failure on Surprise Mountain. While approaching the gap I heard a very loud noise followed by a snow cloud high up Surprise Mountain on what's usually the biggest avalanche path. There were multiple previous avalanches, but this one was significantly larger than anything that happened previously. The avalanche carried some rocks and soil down the mountain in a series of large bumps (see photo). The time of the day (10am) and the huge size after already a couple of warm days was surprising to me. I have some more photos on the Flickr set for my trip: https://www.flickr.com/photos/bravenboer/albums/72157664711680894 and a description of the incident in my NWHikers trip report: http://www.nwhikers.net/forums/viewtopic.php?t=8020233

April 8, 2016, 11:59 p.m. PST

Region: West Slopes Central - Skagit River to South of I-90

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Route Description: Snowline was observed intermittently at 4000' with patchy snow extending to 3600' in a WNW facing below with a large north wall

Weather: Full sun, wind to 10mph

Snowpack: 3-5 inches ski peneteration in slush, changing depending on aspect. Previous slide bed surfaces were corning up nicely

Avalanches: small loose wet sloughs, to be expected given previous days weather and stage of spring shed

April 3, 2016, 4:30 p.m. PST

Region: Snoqualmie Pass
Observation by Peter Gonda

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: Mount Bandera

Avalanches: Slow wet slabs

April 3, 2016, 12:02 p.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90

Elevation: Below treeline

Aspect: N

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: This seemed somewhat old but cool anyways

April 2, 2016, noon PST

Region: West Slopes South - South of I-90 to Columbia River

Elevation: Above treeline

Aspect: S

Did you see any avalanches? No
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Comments: Large cornice release just below Worm flows route on climbers right. Wet slabs were easily triggered by skiing along gully walls. We exited and hiked out on the ridge.

March 29, 2016, 8:15 a.m. PST

Region: Mt Hood
Observation by Patrick Fink

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: White River Canyon, E aspect, 6000'

Route Description: Across Salmon River Canyon to White River, skied one pitch into white river, went home, quit skiing on mt hood.

Weather: Clear, with 30 mph winds from the NE gusting 45. Large lenticular on Hood's top.

Snowpack: Hard sastrugi, scoured ice, and pencil hard wind slab. Wind effect is present on all aspects, with zero soft snow anywhere. The E-facing pitch into white river was pencil hard slab over 4f slab. Overall density is inverted in top 4ft of the pack, but the slab is super hard and there's not really a weak layer.

Avalanches: Saw the slide posted yesterday. In context, it's pretty inconsequential.

March 28, 2016, 7:38 p.m. PST

Region: Snoqualmie Pass

Elevation: Near treeline

Aspect: SE

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? Yes

Comments: Was caught in small storm slab slide about 700 feet above source lake at around 6:30 after a failed attempt of chair peak. Slide was only r1 d1 but still knocked me on my ass and rendered me helpless, but managed to ski out of it at the end, uninjured.

March 26, 2016, 12:23 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by Sean Walsh

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Nisqually glacier, below the ice cliffs.

Route Description: Major activity in the Niqually region could be seen and heard all afternoon from the Muir snowfield.

Weather: Sunny, very warm.

Snowpack: Well-consolidated on the Muir snowfield.

Avalanches: Large avalanche triggered by what appeared to be a serac fall, climbers left below the Gib ledges. Another major avalanche was witnessed 2 hours later in the same region accompanied by significant rock fall. The former was relatively quiet, the latter was as loud as nearby thunder. The picture provided is from the first avalanche.

March 20, 2016, 1:50 p.m. PST

Region: Snoqualmie Pass
Observation by Peter Hranek

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Above Source Lake.

Route Description: Started at

Weather: Temp 40s. Overcast. Just started to drizzle lightly.

Snowpack: Wet. Mostly consolidated.

Avalanches: The avalanche was natural, likely triggered by rock fall. Could not see origin. It came down the gully east of Bryant Peak and stopped 2/3 the way to Source Lake. It was large and wet.

March 18, 2016, 5:55 p.m. PST

Region: West Slopes North - Canadian Border to Skagit River
Observation by Erin Lietzan

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Table Mt / Bagley Lakes Basin

Route Description: Cat track up to Artist Pt; skin track south of Table Mt (4800 feet) to the saddle; up over the col from southwest corner of Table mountain, down little Alaska and back to Heather Meadows lot.

Weather: Clear and a million, winds generally calm with some stronger easterly winds south of Table on the saddle. Started off quite cold (28) and gradually warmed... Higher elevations remained chilly with limited thermal activity due to a high thin cloud layer, but the Basin warmed up significantly by 1400 or so.

Snowpack: Generally right-side up, with a 1-3 inch un-breakable! crust (early in the morning) on southerly aspects, particularly the south faces of Table and Herman. Wind loaded slopes on most southwest to northwest-facing aspects. Test of a roughly 40 degree (small) northwest slope yielded no results and AWESOME powder. Similar results were found on the north face of Table Mt near little Alaska. Cornices abound though... Big ones! On northwest and west sides of ridges, including Table Mt.

Avalanches: Avalanches from (presumably) yesterday's big warmup... Most of the south face of Table Mt shows the aftermath of large loose-wet slides. Nothing was moving this morning. Several point releases were beginning to occur from the south face of Herman by mid-afternoon, and interestingly there were some loose-wet point releases on northwest aspects around the basin.

March 15, 2016, 12:30 p.m. PST

Region: East Slopes North - Canadian Border to Lake Chelan

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? Yes

Avalanches: This avalanche accident observation was produced collaboratively by both skiers involved. Skier A was travelling solo uphill and had just finished climbing a steep slope and had reached a bench in treed terrain below an open slope. Skier B was travelling in a party of two and was descending a ridge above the open area (the open area is measured at ~37 degrees and is 80-140 vertical feet and roughly 200 yards in lateral extent). Skier B ski cut the upper section of the open area with the intent of skiing the open area and triggered a size D1.5 soft slab avalanche. Skier B did not see skier A on the skin track below. The avalanche crown was measured at 25-45cm deep and the avalanche was roughly 125 feet in lateral extent. Skier A yelled and was hit by avalanche debris and lunged forward into the debris to avoid being pushed downslope. Once the debris stopped, Skier A stood up and was buried thigh to waist deep. Skier B asked if skier A was injured and skier A responded that he was not. Skier B descended further down (skier’s right) the ridge and skied the avalanche bed surface down to skier A while skier A removed his shovel to extricate his lower legs and skis, which had released but were attached to his boots with break-away leashes. The avalanche was SS-ASc-D1.5-R4 Submitted by Joshua Cole and Frank Clements

March 15, 2016, 11 a.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90
Observation by Jamie Tackman

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Wenatchee MT

Weather: Broken overcast ~27 F

Snowpack: Most areas were heavily wind affected, on more exposed ridges the new snow had been eroded to the last week rain crust. In the more protected areas the snow was still quite firm (wind board) but skiable. There was a weak bond between the rain crust, and the new snow, but the wind affected snow was mostly supporting, and isolated the sensitive contact. It was possible to find soft snow, but only in the most protected locations ( the last wind event appeared to be out of the west). Found a few good turns on north east aspects.

March 14, 2016, 1 p.m. PST

Region: Mt Hood
Observation by Ron Martin

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: Trees in Newton Canyon

Weather: Snowing and windy on ridge

Snowpack: 1.5-3 ft of fresh powder

Avalanches: Set off numerous small slides (3-10 inch crown, 20-30 ft wide, 25-40 length) with ski cuts on convex features. Numerous hand pits showed easy failure at 3-4 inches. Could be problematic if buried by a lot of snow overnight.

March 14, 2016, 10:51 a.m. PST

Region: Mt Hood
Observation by Heiko

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Jacks woods

Route Description: Approx east 200 yards of solar panel

Weather: Snowing .S1

Snowpack: Lots of new snow . No red flags seen. Normal ski sluff during ski descents. CT8 Q2-3@30cm on dc. CT 25Q3 @75cm pencil Layer on top very loose Polycrystals. ECTN

Avalanches: None

March 13, 2016, 7:11 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Comments: Touchy windslab and storm slabs observed today in-bounds at Crystal, mostly in Northway, but on all aspects and elevations. Up to size 1.5 running fast and long.

March 12, 2016, 11:17 a.m. PST

Region: Mt Hood

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

March 12, 2016, 10:57 a.m. PST

Region: Snoqualmie Pass

Elevation: Near treeline

Aspect: SE

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: Big avalanche down from below Chair Peak basin into spurce lake basin. Probably less than 24 h old.

March 10, 2016, 10:30 a.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90
Observation by Robert Mullins

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: Diamond Head, NE facing, 5700' elev.

Route Description: Open area within forest, deposition zone, 34-38 degrees, wind-protected. Not the heavily used 'main ' run. Exact location described on 3/9, corrected location today on the pinpoint map. This particular slope usually goes when instability occurs. I have ski-cut initiated avalanches here every season many times.

Weather: Warm and sunny, above freezing.

Snowpack: New snow from last night storm was rained on. Fresh snow now 6-8 inches wet mashed potatoes with a crunchy weak rain crust overlying supportable refrozen granular crust; OK fun skiing. The open slope with 38 degree angle was less sensitive than yesterday, but more significant and dangerous when initiated. The tree-shaded 38 degree chute did not avalanche today with vigorous ski-cutting. None of the 34 degree open slope and less angles avalanched today (yesterday 34 degree slope was sliding off to the crust when skied).

Avalanches: The steep 38 degree slope went with a vigorous ski cut followed by a two-foot push to get it moving. Then the slope went perhaps 100 ft wide with wet loose and snowballs. The steep slope in 200 ft. transitions to nearly flat, at that point the debris was 2-3 ft. deep. A person ski cutting this type of snow who weighs less or is less skilled at ski-cutting may not get it to go initially, and then perhaps may get a few turns down it before the slope initiates. From the top, ski-cut hard, then push down hard. This type of wet snow would be more common at the crest such as Stevens Pass. Of interest in this wet-loose avalanche, the bed surface after the avalanche showed runnels from rain/ freewater yet also were some discrete crowns suggesting wet slab in some places. The weakness that was demonstrated yesterday was facets on hard refrozen granular beneath low-density new snow, perhaps partially reduced by today from free water last night percolating to the hard crust.

March 9, 2016, 12:30 p.m. PST

Region: Stevens Pass
Observation by Jay Bjorn

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Back side of captains point

Route Description: Touring area

Weather: 32 degrees windy with snow showers

Snowpack: 12 -20 inches of new snow on ice/slush layer

Avalanches: 300 foot wide 50 foot long wind lip build up released. One person on top witnessed entire slide. I was underneath and only saw small area.

March 9, 2016, noon PST

Region: East Slopes Central - Lake Chelan to South of I-90
Observation by Robert Mullins

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: Diamond Head, NE facing, 5700' elev.

Route Description: Open area within forest, deposition zone, 34-38 degrees, wind-protected.

Weather: Beginning of storm, snowing, winds to 15 MPH

Snowpack: Fluffy new snow, 2-3 inches accumulated on refrozen supportable crust. Weak bond. The entire slope runs to the crust while skiing. Similar areas out of or having less wind effect, such as particular aspect above the Rockslide above groomed snowmobile route 5 miles from Blewett Sno Park and areas of similar aspect in the Wenatchee Mountains may have this extremely weak bond of the new snow to the supporting refrozen surface. New snow accumulations may sluff or if accumulated or slab may natural avalanche or would be sensitive to release. Of note, other aspects that were affected by heavy winds are packed, firm, chalky shallow new snow accumulations on the supportable crust, and may not produce the above mentioned instability. While traveling be aware of aspect changes that may result in one traveling from an area of relative stability in a short distance to an area as described above with likely instability of the snow above the refrozen supporting crust.

Avalanches: While skiing 700 vert. ft., the areas of the slope with angle of 34 to 38 degrees released the 2-3 inch new snow layer as I skied.

March 8, 2016, 8:13 p.m. PST

Region: West Slopes North - Canadian Border to Skagit River
Observation by Jere Burrell

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Bagley Lakes Cirque, below treeline and near treeline elevations, on N.W. -E.-S. aspects, in very steep to moderate terrain.

Weather: Overcast early breaking at times to partly cloudy in the afternoon.

Snowpack: Storm snow and wind slabs on crust with areas of deep wind drifted snow near ridge lines, lee side of trees and cross loaded terrain features. Found the crust to be moist and breakable below tree line on a N.W. aspect early in the day and a S.E. aspect in the afternoon.

Avalanches: Skier triggered storm snow released small loose dry avalanches on crust in very steep N.W. near treeline slopes while moderate slopes remained stable. Skier triggered small wind slabs near treeline in specific areas such as lee side of ridges, trees and cross loaded chutes and gullies.

March 6, 2016, 10 a.m. PST

Region: Snoqualmie Pass
Observation by Ira Rushwald

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Snoqualmie Pass

Route Description: Took the snow lake summer trail out to near Source Lake. Never took this trail in the winter because of the avy hazard i know exists. Decided to try it today and it's very clear why this route has significant hazard. Saw a number of others on the trail also both on skis and snowshoes.

Weather: occasional rain, snow.

Snowpack: Wet and heavy

Avalanches: Saw many loose, wet avalanches that had come down in the last couple of days. Pretty much all south facing slopes had slid. Didn't see any come down while I was out there. The largest was about 300m wide and 300 m along the slide path. Probably R3D3.

March 2, 2016, 2:30 p.m. PST

Region: East Slopes North - Canadian Border to Lake Chelan
Observation by Joel Forrest

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? Yes

Area Description: N-NE Facing slope above pine creek drainage, 6,600'.

Route Description: Skier dropped in from the ridge-top at just above 6,600'. Skier made several turns down lower angled (20-30 degrees) wind blown ridge before examining and committing to the open slope (35-40 degrees) below cornices.

Weather: Temps were below freezing above 3,000' the night prior to the incident with high cloud cover. Clouds dissipated and sun came out around 10:00. Our group experienced a dramatic and rapid warm up of the recently deposited snow on solar aspects as the sun gained intensity over the next several hours. By noon a new front from the west had begun to move in bringing cloud cover, light wind, and cooler temps.

Snowpack: Recently deposited soft storm slabs (0-70cm) on buried surface hoar (N-NE facing). Buried surface hoar formed during high pressure late last week. New storm snow was deposited during two separate events earlier this week. Buried surface hoar was not found in analysis of snowpack on NW facing slopes at 5,900' prior to incident. It would appear that the recently formed, now buried surface hoar has managed to be preserved on protected aspects and elevations that did not either experience wind, sun, or warming before the new snowload was added to the snowpack earlier this week.

Avalanches: Skier triggered avalanche on N-NE facing slope at 6,600'. Crown measured 70cm at the maximum depth. Slope propagated approximately 100 meters across and ran approximately 300 meters. Slope measured 40 degrees at the trigger point with an average slope angle of 38 degrees. Skier was fully buried close to the surface in the deposition zone. No physical injuries occurred to any member of the party. Soft storm slab propagated and ran very quickly on a bed surface composed of well preserved buried surface hoar.

March 2, 2016, 1 p.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90
Observation by Jamie Tackman

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Clara Lake basin

Route Description: Summer trail

Weather: High overcast, light wind out of the west, temps around freezing.

Snowpack: Snow from last night sitting on rain crust in 5500 level, rain crust less evident at higher elevations. Wind effected snow in all aspects. Estamated 22cm of new accumulate. Snow was quite variable depending on aspect, from nice new to breakable rain crust.

Avalanches: Observed an area of what I think was storm slab release, 35-45 slope. Crown estimated 18-25 cm, on north east aspect, it did not propagate.

March 1, 2016, 7:20 p.m. PST

Region: Snoqualmie Pass

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Snoqualmie Pass - Commonwealth Basin

Route Description: Up Commonwealth to the Kendall slide Path, stayed in low angle terrain in the trees.

Weather: Rain/snow mix at the pass. Snowing at 4300'. 32 degrees . Minimal wind until about 1600.

Snowpack: 30cm of dense storm slab. Upper elevations skied well. Snow was saturated down low. Small hand pits at multiple elevations showed low quality shear with moderate force applied.

Avalanches: Loose Wet below the cliffs West facing.

March 1, 2016, noon PST

Region: Stevens Pass

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: WNW aspect 4800' 30-35 degree rolling terrain.

Weather: Heavy snow, warm temps, moderate wind.

Snowpack: 15-18" in past 36 hours.

Avalanches: SS-AS-R2D2 Slope tests producing remote/sympathetic triggering into steeper adjacent terrain. Within storm snow or where wind slabs are building. Running almost full path and entraining some of the moist snow at lower elevations.

March 1, 2016, noon PST

Region: East Slopes Central - Lake Chelan to South of I-90
Observation by Jamie Tackman

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Mission Peak

Weather: Snowing, occasionally snow pellets, on the way up, low overcast, SW winds estimated 25-35 mph , higher on exposed ridges.

Snowpack: Traveled from 4500 to 6800, snow in all but the most protected areas was wind affected. Temperatures warmed throughout the day, freezing level seemed to be around 5000. Snow depth around 18 cm , hand shear tests showed fair bonding of the new snow, but some tendency to shear at the boundary of the wind affected layer. On the decent encountered hard rain around 5000.

Avalanches: None observed

Feb. 27, 2016, 3 p.m. PST

Region: Stevens Pass

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Arrowhead Mountain

Route Description: Took road for most of the route up then up to the ridge between Arrowhead & Point 5909. Descent via main cirque then linked the clear cuts.

Weather: Cloudy, light rain, some sun breaks, snowing up on the ridge. A little bit of everything.

Snowpack: Skied relatively well, if heavy at the top. Really easy to get snow moving as wet/loose type hissers. Probably couldn't bury someone but definitely could have put you in a terrain trap at the wrong place. Knocked off some big pinwheels too, some of which entrained lots of snow. Firmer in the tree bands but still not terrible skiing. Bottom of route out firmer but skied nicely.

Feb. 27, 2016, 7:27 a.m. PST

Region: West Slopes North - Canadian Border to Skagit River
Observation by Andy Read

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: Wet, heavy, consolidated snow existed on all aspects along Artist Point ridge today. Ski cuts on steep test slopes triggered loose wet snow sluffs at all elevations. Small cornice pieces dropped onto steep test slopes would trigger sluffs and large pinwheels. Some pinwheels picked up snow from below the wet surface layers and grew to 2-3 ft in diameter. Ski run triggered avalanche on slope of ~35 degrees with a large volume of snow cascading behind and parallell to skiier

Avalanches: Multiple observed

Feb. 26, 2016, 10 a.m. PST

Region: Snoqualmie Pass

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Route Description: Standard route up W face Red Mountain

Weather: Partly sunny or sunny, with weather approaching from West. Light winds. Warm

Avalanches: One large R1D2 wet loose avalanche that started as a point release had run (probably 2/25) in one of the gullies on W face of red. Numerous other small wet loose avalanches on E-S-W aspects. Rollerballs on W slope from the day before made challenging skiing.

Feb. 25, 2016, 11:46 a.m. PST

Region: West Slopes North - Canadian Border to Skagit River

Elevation: Near treeline

Aspect: E

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: Numerous loose wet on Herman mountain

Feb. 24, 2016, 5 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by Peter Ellis

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Panorama Point, Mount Rainier National Park

Route Description: convex roll over, on a recently wind loaded aspect, slope angle approx. 30-35 degrees.

Weather: Sky: Scattered-Broken WInds: L, West Precip: NO Blow Snow: None

Snowpack: -Breakable crust in places, and "hollow" sounding in many places, scoured on windward aspects, snow becoming solar affected and softening by evening. -Evidence of recent wind loading on southwest and west aspects. Moderate east winds and moderate blowing snow noted while out on 2/23 in similar area.

Avalanches: Wind slab: R2, D1.5-2 This avalanche may not have been substantial enough to kill a person, but certainly had potential to injure or possibly fully bury someone, as it came to rest in a small terrain trap that prevented it from rolling over another edge onto a larger slope below.

Feb. 24, 2016, noon PST

Region: Mt Hood
Observation by Charles Reneau

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Bennett Pass, Terrible Traverse.

Route Description: The Terrible Traverse is a steep, east-facing slope on the Bennett Pass Road.

Weather: Partly sunny.

Snowpack: Warm, soft snow that seemed well bonded to lower layers.

Avalanches: We observed a small wet loose avalanche. It came down from above the road grade as we crossed the Terrible Traverse. It didn't seem to me large enough to bury someone, but there was enough snow that, had it hit one of us, it would likely have knocked us off the narrow traverse and down the steep slope below.

Feb. 23, 2016, 7 p.m. PST

Region: West Slopes North - Canadian Border to Skagit River
Observation by Lee Lazzara

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: South Table to Ptarmigan Ridge + Lasiocarpa Ridge/Peak

Weather: Clear and calm morning but moderate to strong southerly winds hit around 11am and lasted till mid-afternoon. Area with the greatest wind effect was Above Treeline terrain from Ptarmigan Ridge out to the Park Glacier on Mt Baker. Less/no visible wind transport observed in other areas (Skyline Divide, Shuksan, Winchester, etc).

Snowpack: Biggest change today was from wind slabs building on northerly slopes in the alpine with midday winds. We backed out of some steeper terrain we had considered skiing due to rapidly building wind slab. All slopes on the south half of the compass crusted from strong solar on 2/22. 1-2mm SH observed in sheltered, shady aspects. No doubt this surface layer didn't survive winds this afternoon in exposed terrain.

Avalanches: No significant avalanche activity observed. Winds kept snow cool enough on solar aspects to prevent Loose Wet avalanche activity. Near summit of Lasiocarpa we released a few shallow pockets of wind slab entering upper slope. Very reactive but again seemed very localized in nature. On exit run saw many, many steep lines around Bagley Lakes had been ridden with no results beside minor Loose Dry . . .

Feb. 23, 2016, noon PST

Region: Stevens Pass
Observation by Garth Ferber

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Jim Hill

Route Description: via Henry Creek

Weather: Partly/Mostly Sunny. Cool. Light winds.

Snowpack: At 5800 feet north slope 20 inches of right side up snow F surface gradually increasing to 4F with depth to February 17th MFcr. CTM RP at 6 inches, CTH RP at 12, 19 inches but lacking slab layers. Bond good to February 17th MFcr. We had concerns about wind effects on way up but new wind slab not found. Good skiing. New ~5mm surface hoar on non-solar slopes. Small roller balls on steep solar slopes in afternoon.

Feb. 20, 2016, 8:41 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River

Elevation: Above treeline

Aspect: SE

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Feb. 20, 2016, 6:11 p.m. PST

Region: West Slopes North - Canadian Border to Skagit River

Elevation: Near treeline

Aspect: N

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? Yes

Comments: 4 skier triggered wind slabs observed on ene aspect on mt Herman. Running in last storm snow. To d2. Skier caught in one. Not buried.

Feb. 20, 2016, 5 p.m. PST


Observation by

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Feb. 20, 2016, 3:15 p.m. PST

Region: West Slopes Central - Skagit River to South of I-90

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Above treeline approx. 4600 ft., southwest slope near top of Mailbox peak.

Weather: Partly cloudy, 30 degree temps, no wind

Snowpack: Conducted hand shear on the go; Crust forming on lee slope, weakness about 9 inches down; lots of melting in morning below treeline creating falling ice, snow, and precipitation

Feb. 20, 2016, 12:30 p.m. PST

Region: Snoqualmie Pass
Observation by Tod Bloxham

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: Mt Snoqualmie

Route Description: Mt Snoqualmie Slot Coulior via South Shoulder

Weather: Clouds Broken/Scattered, some sun. Precip NO.

Snowpack: Touchy SS 15cm, Touchy SS 29cm, Stubborn SS 41cm, Wet Rain Crust.

Avalanches: Yes. Slot Coulior, ski cut/jumps, while on belay, D2.5 R5, 35cm SS, wall to wall 1300'. Was not anticipating skiing slot with touchy SS, we had a rope so we tested entrance anyways before turning back; after it slid we decided to ski it and exit via snow lake.

Feb. 20, 2016, noon PST

Region: Olympics
Observation by Brian Svik

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: Hurricane Ridge area

Route Description: Leeward side (north) of the ridge to the east of the Hurricane Ridge ski area

Weather: Partly sunny, 32 degrees

Snowpack: ~8 inches of new storm snow over a rain crust

Avalanches: 40 to 50 ft wide slab with an 8 inch crown was skier triggered on the leeward side of the ridge. Skier was able to arrest at trigger point. Multiple small cornice drops were done prior to dropping in. In hindsight, isolated area was obviously wind-loaded. Slide continued down to the bottom of the basin at a relatively moderate pace. One skier in party rode the slide path (rain crust bed) to retrieve dislodged ski. Skiers climbed slide path back to ridge.

Feb. 20, 2016, 11:30 a.m. PST

Region: Mt Hood
Observation by Heiko S.

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Mt. Hood / Mitchell Crk / Vista Rdg

Weather: clear to overcast . winds calm

Snowpack: pit #1 North. 20'. @ approx 6200ft TD =130 CT 15Q3 @ 45cm rc CT 23q3@75 MF ECTN Pit #2 Hasty Pit. West facing, approx. 6500 ft CTC @ est. depth 40-50cm. on cr or rc. Below that was very wet clustered rounds bordering on slush.

Feb. 19, 2016, 4:37 p.m. PST

Region: Stevens Pass
Observation by Matt Hartman

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Skied north from 5500' or so to highway. New snow at 10 am was well bonded to crusts and reasonably unconsolidated. The snowfall rate in the afternoon was moderate to heavy at times and likely increased storm slab and loose dry potential.

Route Description: From ski area hiked to big chief and dropped north to highway.

Weather: S1 to S2 all day.

Snowpack: New snow was bonding well to crusts. With elevation loss there was a marked difference in snow amounts. About 6-7 inches at 5,000' and less than an inch at highway.

Avalanches: None.

Feb. 18, 2016, 1 p.m. PST

Region: Stevens Pass
Observation by Nick Pope

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: Stevens Pass, Skyline Ridge area

Weather: Broken skies, winds light to mod with light to mod blo sno. Some solar effect but limited. Snow showers to S1 at times. 5400' at 1300 it was -1 C.

Snowpack: 10cm HST from 2/17-2/18 on 30-50cm of rain saturated MF. 2/17 surface unfrozen up to about 5200' where it was slightly supportive. In the dark timber with less HST it was quite firm, ski crampons could be good. Open areas without avy debris and tree bombs skied well. Descending on steeper open slopes, 35-40deg, the upper 20-30cm would cut out and run quite far as loose wet. Wind slabs were present near ridgetop to max thickness 20cm; isolated and minimally reactive. Storm snow not copious enough to be a slab problem.

Avalanches: Small but heavy loose wets, skier triggered on steep features, E aspect, ~5000'. A couple small loose wet naturals from last 12 hours on NW aspect ~5000'.

Feb. 14, 2016, 5:06 p.m. PST

Region: West Slopes Central - Skagit River to South of I-90

Elevation: Near treeline

Aspect: E

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: Found storm layer 30cm down, with clean propagation, as well as a weak layer 90-115cm deep with clean propagation on 7th from elbow hit, very wet and heavy, shovel shear tests show how unstable to storm layer is, and got worse during the day,

Feb. 13, 2016, 3 p.m. PST

Region: Stevens Pass
Observation by Mike

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: Just above the PCT below moonlight

Route Description: Snow was much lighter at the top of the ridge with some very small slabs forming.

Weather: Moderate snow

Snowpack: Moist

Avalanches: Small loose wet at bottom of run. Entrained mostly new snow small amount of old. Partially open creek by PCT, wouldn't want to go in with a bunch of wet snow.

Feb. 10, 2016, 6:32 p.m. PST

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Feb. 9, 2016, noon PST

Region: Stevens Pass
Observation by Nick Pope

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Stevens Pass area including Christmas Bowl

Weather: Clear and sunny. Local temps in shady basins staying cool with light east flow.

Snowpack: Shady open areas had some small SH often with a temperature crust below. Flat areas had thin temp/sun crust. Lots of warming of solar aspects. Overnight expecting a strengthening crust with radiative re-freeze. Upper pack had ~80cm of PP/DF on top of 1/29 rain crust.

Avalanches: Isolated loose wet to D2 off big south faces.

Feb. 8, 2016, 2:30 p.m. PST

Region: Mt Hood

Elevation: Above treeline

Aspect: SE

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: Dug a pit. T30 Q3. Watching cornices break off all afternoon above slopes. Water literally draining off the tips of cornices on to slope below

Feb. 7, 2016, 9:17 p.m. PST

Region: West Slopes North - Canadian Border to Skagit River

Elevation: Near treeline

Aspect: NE

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Feb. 7, 2016, 2:30 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Avalanches: D2 wind slab release on S-SE aspect, approx 7000'. Estimated crown, 1 m deep and 80 m wide. Trigger may have been small wet point releases from cliffs above.

Feb. 7, 2016, 1:58 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by Nordic Patrol Denis Du Bois

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Mt. Rainier, above Paradise

Route Description: Golden Gate, Skyline Trail

Weather: Clear, sunny, warm.

Snowpack: Near treeline (6000-6500) by noon the top 5-10cm of snowpack was significantly affected by the warming and sunshine. Widespread snowballs all day, and active pinwheels by end of day.

Avalanches: Saw evidence of high alpine point releases (~8000) by mid morning. Watched a large avalanche below Camp Muir at 2pm.

Feb. 6, 2016, 5:39 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River

Elevation: Above treeline

Aspect: NE

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: Cement basin Norse wilderness

Feb. 6, 2016, 5:30 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by Dallas Glass

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Barn Flats: E-SE slopes 5200' Below Treeline

Weather: Broken skies with no precipitation. Light winds. Current weather was not effecting the snow surface.

Snowpack: Soft deep snow exist at Paradise. We did find evidence of storm slabs down about 1 foot. However, observations below treeline did not suggest propagation to be likely.

Feb. 6, 2016, 4:30 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: Morse Creek basin below 3-Way Peak, NE of Sourdough Gap

Route Description: Traversed NE out of the Morse Creek basin below 3-Way peak, heading back into Silver Basin at the end of the day (generally following the PCT)

Weather: Broken clouds, 30 degrees or so

Snowpack: 6" - 8" unconsolidated storm snow on top of the late January rain crust. Some whomping, but no cracking or natural activity.

Avalanches: Finally triggered a 30 meter wide, 6" crown slide of unconsolidated storm snow about 20 meters below us on a convex roll as we were about to turn NW to gain the ridge above Silver Basin. The slide went to the valley floor.

Feb. 6, 2016, 3:23 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by Calvin Hall

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Cement Basin

Route Description: Traveling along the ridge and were about to ski Cement basin when avalanche triggered

Weather: Sunny

Snowpack: 6" new

Feb. 6, 2016, 3 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by Skyler Mavor

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Snowpack: We encountered repeated, obvious woomphing on low angle slopes that had been wind loaded on a SE aspect near the ridgeline. A quick hand shear where the woomphing occured suggested that failure was at the old rain crust at ~40 cm. Widespread wind effect is visible and personally I would not trust any wind loaded slopes through tomorrow. CT with no results at ~5500' and ECT at ~6200' on East Peak SW facing slopes without wind loading. ECTN 14 in older storm snow at 20cm with Q3 poor quality.

Avalanches: Not our party, but another group reportedly witnessed a D2 windslab avalanche on a steep north facing wind loaded slope near a ridge line in the bowl south of Norse Peak. Unclear if this was natural or remotely triggered.

Feb. 6, 2016, 2:15 p.m. PST

Region: Olympics
Observation by Solveig Waterfall

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: N aspect of the Hurricane Ridge Visitor Center area, west of the ski area. 5228'. UTM 10T 462770 5313178

Route Description: Pacific Alpine Guides AIARE level 1 course. Companion rescue and test pit day with minimal travel.

Weather: Calm- Light variable winds, broken clouds, 3500' FL, no precip.

Snowpack: We went looking for potential buried surface hoar, which as noted in the avalanche forecast, may be present in the area. We found a slope that had cracked significantly but not released, and chose to dig nearby. We found the buried surface hoar layer intact and reactive 25cm's below the surface. The HS in our pit was 227cm's. From 227 to 220 the snow was F hard and at 220 we found a P hard 2cm windslab. From 218 to 202 the snow went back to 4F hardness and the buried SH was found at 202cm's or 25cm's down. Below the BSH the snowpack was 4F-1F increasing density with depth until you hit the wet grains from the rain event at 185cm's.

Avalanches: We did not observe any avalanches, however we did see shooting cracks that spanned an entire slope and zippered between small trees. In our test pits we had positive shovel tap test results and a CTH 21 / Q2. Due to time constraints we did not perform any large column tests.

Feb. 6, 2016, 2 p.m. PST

Region: Stevens Pass

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: Lichtenberg Mountain Area

Route Description: took off from yodlin, went up through trees 20 degree, above the trees there was a bench and the pitch increased to 35. triggered remote slab

Weather: snowing, wind loading on on south west slopes, snow went from heavy to slight

Snowpack: 40cm new snow bonding to oldsnow and 40 more cm to some sort of rain crust. snow sheared at 40cm, was fracturing on 12 hit

Avalanches: south west slope, remote trigger 100-150 foot, 40cm crown, skinning up, heard whomph, 200 feet above me wind slab let go, slow moving snow and 200 above I was able to skin away and out of the path

Feb. 6, 2016, 2 p.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90
Observation by William Ashby

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Pt 6191 about a half mile south of Lillian Mountain east of Blewett Pass

Route Description: 22 degree slope with a northerly aspect

Weather: Cool & clear

Snowpack: Solid 14" top layer over weak hoarfrost layer

Avalanches: A party of six snowshoed east of Blewett Pass this past Saturday (Feb 6th) to point 6191 about a half mile south of Mt Lillian east of Blewett Pass. As we approached the summit at 6120 elevation on a 22 degree slope in trees with a northerly aspect we set off a “wompf!” and saw a crack propagate approximately 50 feet across the slope 7 feet above us. Given the low slope angle the snow mass moved no more than ½”. We dug down along the crack and about 14 inches down we found the hoarfrost layer that gave way. Had we been on a slope with a steeper angle this might have been a more significant event.

Feb. 6, 2016, 11:44 a.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90

Elevation: Below treeline

Aspect: NE

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Comments: Seen about 6 of them Triggered 5

Feb. 6, 2016, 11 a.m. PST

Region: West Slopes South - South of I-90 to Columbia River

Elevation: Near treeline

Aspect: W

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: Nordic Patrol, Alta pit above Paradise: The Ice Layer is 1m down. Below that, consolidated. Soft slabby snow above, mostly 1 finger. Found a buried zipper crust at 35cm, 4 finger resistance. In 2 compression tests, fractured on that 35cm interface @ 8 taps, and on 2 weak interfaces (buried frost?) at 12cm & 16cm, also 8 taps to fracture. Shovel shears on those layers revealed Q3 resistant shears at those interfaces. Later near Pan Point, found the ice layer was only 30cm down, covered with wind-scoured slab, well bonded. Witnessed no instability all day.

Feb. 6, 2016, 8 a.m. PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by Brian Hasebe

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Mount Rainier National Park - Paradise area

Weather: Cloudy and calm at observation, but high winds (100+mph at Muir, 25mph at Paradise) overnight.

Snowpack: Below treeline, we had a fair bit of rain last night, which eventually turned to snow. Last night's rain resulted in a 4 cm rain crust with older heavy snow below for 60-80cm. Was able to consistently get resistant planar failures with both CT, ECT, and SS tests at 40cm on a thin rain crust (0.5cm thick). Could not get it to propagate however. Above treeline, the same failure plane exists, but is more deeply buried / heavily loaded on lee slopes. I think the potential for new wind slab and storm slab to step down to this older layer is a possibility on steeper slopes. While ECT tests only broke (ECT 15 break @ 60cm on facets below the thin crust) and I could not get slopes to move during ski cuts, I was only assessing on lower angle slopes at approx 7000' elevation. Skiers heading to higher elevations on the Muir snowfield, or to steeper slopes (ie to the east of the snowfield) should exercise caution.

Avalanches: None triggered, and no new observed (24 hrs)

Feb. 4, 2016, 4:12 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River

Elevation: Below treeline

Aspect: NE

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: Wind blown slopes would fracture.

Feb. 4, 2016, 3 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River

Elevation: Near treeline

Aspect: NE

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: this is a test.

Feb. 4, 2016, 2:30 p.m. PST

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: Test

Feb. 4, 2016, 2 p.m. PST

Region: East Slopes North - Canadian Border to Lake Chelan
Observation by SKIER-X

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Delancy ridge -Lone fir , HWY 20.

Weather: Clear to overcast ,warming with wind increasing . Delancy ridgetop plumes from sw. wind.

Snowpack: Winds forming cornices and rippling slab forming in the Alpin . Solar warming and wind activated tree releases at treeline and below

Avalanches: No current recent observations

Feb. 4, 2016, 1:40 p.m. PST

Region: Snoqualmie Pass
Observation by Troy Langley

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: 2 avalanches skier triggered while skinning up. 1st slide occurred at N47.45787° W121.41910° (WGS 84). 2nd slide ripped 10 minutes later at N47.45791° W121.41944°. Both were at an elevation of about 5770, near the lower entrance to the Snot.

Route Description: Ascend the SW side of Snoqualmie Mt. to the Snot entrance to retrieve gear.

Weather: Snowing. Windy at times.

Snowpack: Variable. On the upper mountain there were two distinct layers in play. A thinner layer on top and thicker layer below for a total of 40 cm in places, propagating and running on what appeared to be a sun crust. Also observed minor movement on the rest of the mountain but was easier to manage.

Avalanches: 1st slide was bigger, with a crown of up to 40 cm deep, approximately 4 meters wide, triggered by another skier ahead of me. I took a flatter route and triggered a small second slide. The slope angle was low enough that the snow moved slowly around me.

Feb. 4, 2016, 11 a.m. PST

Region: Mt Hood
Observation by Patrick Fink

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Gunsight Ridge , W-NW facing slopes 4000'-5700'

Route Description: Ascended through trees on W aspect, skiing one unsheltered run around 5000' before making a rising traverse to a NW aspect at 5500' and skiing to the valley floor.

Weather: 8/8 sky w/West wind 20-35 mph. Snowing 1.5 cm/hr at 9:45 becoming wet ice particulate at 10:30. Rain first noted at 11:15 at 5000'.

Snowpack: 20-40cm F/4F storm snow well-bonded to underlying crust, with 1-2cm saturated surface snow. Two planar density changes noted within the storm snow failed readily in hasty pits and CT1Q2 down 9 cm, but these fist-4f storm slabs showed no propagation, just progressive compression on extended column. Below the rain line the top 15cm was completely saturated and dripping, sporting roller balls > 2ft in diameter. Some dryer snow and small windslabs were noted in only the steepest, most protected areas within the trees, and they are likely being rained on right now. Observed hazard moderate becoming considerable as the snow saturates. Riding conditions were bad to worse.

Feb. 4, 2016, 10:54 a.m. PST

Region: East Slopes South - South of I-90 to Columbia River

Elevation: Near treeline

Aspect: S

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: I saw an avalanche near dog lake that had a crown of about 10 inches, R2, started about half way up slope near trees, slope angle near 40 degrees, saw no tracks in or coming into Avalanche flow so think it may have been natural,

Feb. 4, 2016, 10:30 a.m. PST

Region: Mt Hood
Observation by Ron Martin

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Newton Canyon

Route Description: Entered from HRM lot into Heather runout and headed up ridge just before God's Wall. Followed ridge to about 5,800 ft.

Weather: Light rain/mist at entrance to HRM lot (~4,400 ft) at 10:30 AM switching to light wet snow at about 11 AM (~4,800 ft). Snow rate increased to moderate to heavy by noon (~5,100 to 5,800 ft). Windy (~15-35 mph) and gusty on ridge.

Snowpack: Numerous hand pits at various elevations and aspects on both the SW and NE sides of the ridge; all failed upon isolation at ice crust (~1.5-2 ft) and several at weak layer (~6-9 inches). Medium stomp above skin track released ~2 ft cohesive slab (~6 ft x 8 ft).

Avalanches: Very surprised I did not see any avies (except those in Meadows from Ski Patrol that I saw on my way out). Most unstable I have seen Newton in a long time.

Feb. 4, 2016, 9:20 a.m. PST

Region: Mt Hood

Elevation: Near treeline

Aspect: NE

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: Working at the top of heather canyon chair lift. Dug a test pit on NE facing 28 to 30 degree slope conducted an extended column test Results: ECT12 planar fracture @35cm On decomposing snow on top of last weeks rain crust, shovel sheer test failed at the same depth. 8" of fresh snow, temp 26 degrees.

Feb. 2, 2016, 3 p.m. PST

Region: Stevens Pass
Observation by Matt Hartman

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Lichtenberg west face.

Route Description: Skinned from Yodelin to saddle and did 2 laps on west face.

Weather: Broken skies with sun.

Snowpack: Solar aspects below 4800' had a crust from previous solar warming. Shaded aspects were developing NFC's from temp gradient above crust. This trend will continue for tomorrow.

Avalanches: Wet loose on solar aspect after 1 pm.

Feb. 2, 2016, 2 p.m. PST

Region: Mt Hood
Observation by Patrick Fink

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Gunsight Ridge and Badger Butte

Route Description: Up NW gunsight ridge to ridgetop, skied down to Badger lake on SE aspect, ascended Badger butte to ridgetop, skiing NW aspect back to the lake, returning by reversing route.

Weather: Few clouds, becoming scattered around 15:00. Calm, no precip. Moderate sun effect on SE aspect, warming snow surface to produce small rollerballs.

Snowpack: Storm snow from the weekend consolidated to 25-30cm, and recrystallized under clear skies. Very low density noncohesive snow, sluffing readily on slopes >40d. SE slopes with 1 cm zipper crust, becoming warm and wet in the afternoon. Observed 0.5-1.0 cm surface hoar on shaded N-W aspects with significant spacial variability. In som cases this was growing atop a zipper crust as well.

Avalanches: Observed rollerballs and point releases on road cuts, SE aspects, and across the valley on Elk Mountain. No significant releases.

Feb. 1, 2016, noon PST

Region: Snoqualmie Pass
Observation by Kyle Miller

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: SW flank of Red Mountain @ 5000'

Route Description: Up Commonwealth creek and SW Rib of Red Mountain. Turned around when we found questionable stability above a long 40 degree gully we intended to cross.

Weather: ~32F, mostly cloudy, occasional snow flurries

Snowpack: 10-50cm of storm snow on top of rain crust. CT16 Q3 10cm above rain crust on a graupel layer. Storm snow appeared well bonded to rain crust.

Jan. 31, 2016, 7:53 p.m. PST

Region: West Slopes North - Canadian Border to Skagit River

Elevation: Near treeline

Aspect: E

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Comments: Small soft slab propogating 30m wide, running 50m vertical to a step in the terrain with a crown depth up to 25cm. This skier triggered slide occurred on a near treeline east facing convex roll onto a 35 degree slope within a storm snow interface 25cm down. We found bonding between storm snow and a moist crust 50cm down that did not react through out the day on slopes up to 42 degrees.

Jan. 31, 2016, 6 p.m. PST

Region: Stevens Pass
Observation by Matt Hartman

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Skyline-North to Moonlight.

Route Description: Skinned up road with AIARE level 1 to saddle above lake. Then dropped north and skinned east to Moonlight. Descended to PCT.

Weather: Sky-Broken to Overcast Precip- No Winds- Light and Variable Temps: Just below 0 C.

Snowpack: Dug a test pit at 5,000' East aspect. Top Meter rightside up F to P. CTM RP Q2 down 30cm at new snow interface with crust. CTM PC Q3 down 60cm. ETC X Maritme set up with polycrystals and rounds below 30cm new snow. We were able to still see SH layer from Jan 3. It is frozen in place. Could not find Jan 11 SH layer.

Avalanches: None. Ski Test on 30-35 degree slopes (N to E) showed no signs instability.

Jan. 31, 2016, 2:52 p.m. PST

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Jan. 31, 2016, 2 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by Ron Jarvis

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Paradise

Route Description: Paradise and surrounds

Weather: Overcast, 22-26 degrees F

Snowpack: Recent 24hr snow fall well bonded to the underlying strong/supportive rain crust below in east, west and north aspects.

Avalanches: none noted.

Jan. 31, 2016, 12:30 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by Laura LeBlanc

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: E facing slope, approx. 150' below ridge crest, 22 deg open slope

Route Description: Approached from Paradise parking lot, following cat road (Skyline trail) around southern flank of Alta Vista to low angle eastern slopes.

Weather: Obscured skies and limited visibility. Light SW winds. Temp -4.5 deg C

Snowpack: E Aspect, 5738', 22 deg slope, test pit. HS 282cm. ~35 cm of relatively unconsolidated (F to 4F) storm snow on rain crust. Variable hardness, ~30 cm thick layer of melt freeze and ice forms below storm snow. Moist snow found below ~1m depth. Several somewhat sensitive layers within storm snow (CTE6 Q3 PC at 15 cm and CTM20 Q3 PC at 22cm). No release on SS-rain crust interface with CT. However, RB6 MB (Q2 RP) at 35 cm on rain crust.

Avalanches: None observed. Noticeable fresh cornice development on ridge north of Alta Vista from SW - W winds.

Jan. 31, 2016, 12:15 p.m. PST

Region: West Slopes North - Canadian Border to Skagit River

Elevation: Below treeline

Aspect: SW

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Comments: Skiing on the SE side of Herman Saddle on Sunday afternoon I triggered an R1D1 wind slab slide on a SW aspect roll over at around 4600 feet. Approximate crown was from 4-8", about 100 yards across and ran for around 50 vertical feet. The slide was contained to the wind loaded storm layers of the previous 3 days and did not step down to the ice layers created earlier in the week from rain or any persistent layers from early January. I was able to ski to the perimeter of the slide when it started moving and was only carried about 20 feet before stopping myself. The only casualty was a pole which could not be found in the debris.

Jan. 31, 2016, 11:15 a.m. PST

Region: Olympics
Observation by David Geeraerts

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Olympic national forest Lake Chushman area: Mount Ellinor

Route Description: Mount Ellinor winter route( chute).

Weather: Partly sunny. Mostly clear.

Snowpack: Snow Pit (east side of chute near the base) Elevation: 1,402 meters | 4600 feet Slope angle: 40 Aspect: south south-east (165) Snowpack: 200+ cm 1. Shovel Sheer test --no results 2. CTx --no results. Slight insignificant fracture at 6 cm which is the new snow. 3. ECTx --no results, but decided to continue to see if we could get propagation, which we did at ECTP 32. Failure was at 70 cm which is where the freeze had stopped or not reached, and the layer below that is very wet somewhat slushy snow. Fracture was very course –non-sheer plane-- indicating good bonding within the two layers. With continued freezing temperatures, I would anticipate the snow layer continuing to become stable.

Avalanches: No red flags the whole day. It was obvious to stay out of the bowl on the North & East side due to severe wind loading. Witnessed pin-wheels and rollers, but no loose wet avalanches observed, nor any evidence of triggered loose wet avalanche.

Jan. 31, 2016, 11 a.m. PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by Stugie

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: 5100' north facing slope just below tree-line. 42-45* isolated slope at the top of two prominent drainages/avalanche paths

Weather: Overcast with limited visibility/flat light higher than 5500'; occasional flurries of small rounds around 15:30

Snowpack: Varied depths of consolidating powder (approx. 38 cm, F) moderately well bonding to previous rain crust (approx. 13 cm, 1F). Secondary layer of buried depth hoar significantly deteriorated (15 cm, F). Isolated Column Test = 26 CT, Q2 at 38cm. Important to note was that while shaping two separate columns, snowpack easily failed at 51cm, sliding the entire column at the

Jan. 31, 2016, 8 a.m. PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by saign

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: east peak and surrounding areas

Weather: clear to cloudy

Snowpack: unconsolidated on top of rain crust. New surface hoar growth was seen on tour up. Lots of sluff on steep terrain

Avalanches: no

Jan. 30, 2016, 4:30 p.m. PST

Region: Stevens Pass
Observation by Olivia Race

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Yodelin - Lake Valhalla area 3600'-5200'

Route Description: Approached via Nason Creek & up the SW rib under the horn of Lichtenberg. Nason Creek is quite open with limited opportunities for crossing.

Weather: Overcast & broken skies throughout day. Light snow for most of afternoon hours. Light SSW winds occasionally gusting to mod.

Snowpack: 30-40 cm of HST appears to be very well bonded to the refreezing snowpack. Did not observe evidence of significant wind transport. A surprisingly thick (up to 1 cm)& skiable (though annoying) sun crust formed despite significant cloud cover throughout the day. Excellent ski quality on non-solar aspects.

Avalanches: No recent avalanches observed. We did notice several significant (D2 & D2.5) wet slides on SW and SE aspects of Lichtenberg that most likely released during the rain event.

Jan. 30, 2016, 3 p.m. PST

Region: Mt Hood
Observation by Patrick Fink

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: Pea Gravel ridge at and above treeline, E-NE facing slope around 6000'

Route Description: Standard approach, skiing E-NE aspects with exit out opposite aspect to heather canyon cat track

Weather: Intermittent sun and snow squalls . Winds at ridge top from 0-30 mph, with significant ongoing wind transport throughout the day. Daytime accumulations around 1". Significant precipitation began as we left around 16:00.

Snowpack: 30 cm storm snow of medium density over a firm raincrust. A quick pit found multiple planar shears within the new snow on isolation, though the 'slab' has little cohesion. CT22Q3 at the new snow old snow interface, with a right side up density profile. The storm slab is was an issue on slopes under 40 degrees. Some loose snow sluffing was observed on 40 degree slopes. Riding conditions were excellent in wind-sheltered areas Wind slab was building throughout the day just off and extending to 10 m below the ridge line. This was a 4f to 1f slab 5-6cm deep which grew deeper and more reactive as it was loaded during the day. Windward aspects were a mix of scoured rain crust and dense pockets of windslab which was unreactive.

Avalanches: A member of our party pulled out a small 3" x 10' x 40' windslab which ran on surface snow until encountering lower angled snow. This was the result of a ski cut and no skier was caught or carried. On subsequent laps, exploration kicking cornice higher in the bowl yielded shooting cracks up to 15m propagating within this windslab and pulling out slabs 4-6" x 30' x 10' consistently, which broke up on lower angled terrain. Observed danger was technically considerable, but essentially moderate. These wind slabs could grow in size with winds overnight, but lacking a weak layer/bed surface, they're likely to be problematic only on slopes >40 degrees

Jan. 30, 2016, noon PST

Region: West Slopes North - Canadian Border to Skagit River
Observation by Matthew Tangeman

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Swift Creek

Route Description: Poor visibility and gear breakdown kept us wallowing in Swift all day.

Snowpack: Fresh stuff is not well bonded with itself (but surprisingly well bonded with the rain layer below, I thought) and prone to sluff. Saw a couple tree bomb induced loose dry slides, all very small, but there. Dug a pit to about 1.75m and got little results. The old, percolated snow seemed to be refreezing nicely but certainly got warmer the deeper you went. Another party found water still percolating through in a deeper pit on a N aspect.

Avalanches: Just sluff

Jan. 30, 2016, noon PST

Region: East Slopes Central - Lake Chelan to South of I-90
Observation by Nick Pope

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Clara Lake, Mission Peak. 4600' - 6800'

Weather: Below freezing all day. Sky clear to few. Winds light by mid day. Moderate blowing snow early, light to none by mid day.

Snowpack: 10 cm new from 1/29 sitting on crust. Crust varies from easily to non-breakable with elevation and exposure. Lots of wind scouring and deposition near and above tree line. Wind slab encountered tended to be 10-20cm thick, up to 40cm in isolated pockets. Some snow still available for trasport but its hidden in sheltered areas. At 6000' above Clara Lake found 1/3 and 1/11 SH down 60cm and 50cm respectively. 1/3 SH still had obvious 10mm grains and gave an ECTP 26. 1/11 SH was more rounded and showed no result on testing.

Avalanches: No recent avs observed. Saw one full depth that released from a very steep rock face, north aspect at 5800', that I don't believe was there on Wednesday. Approx. 20'x40'x3'.

Jan. 30, 2016, 11:30 a.m. PST

Region: Stevens Pass

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: In bounds chutes above Big Chief Bowl in the Stevens Pass ski area. NE aspect, leeward and protected by trees.

Weather: Partly cloudy. 28-31 degrees with light wind. 11 inches of snow in past 24 hours.

Snowpack: 7-10 inches on top of a fairly hard rain crust that formed the day or two before it began to snow.

Avalanches: Near the top of the chute before it began to narrow into the trees, shooting cracks set a small 5' X 3' storm slab but it didn't slide more than a foot before stopping. Further down, after traversing into a skis wide chute, shooting cracks set off another 6' wide soft storm slab that slid on the rain crust roughly 50'-60' and settled into a group of trees.

Jan. 29, 2016, 4:30 p.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90
Observation by Jamie Tackman

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Clara lake basin

Route Description: Summer Trail

Weather: Snowing, heavy at times, west wind estamated gusts 50. Blowing snow temp ~25f

Snowpack: In wind protected areas, 10cm light density snow resting on a firm crust. If the wind continues I would expect to see deposits on east aspects. Nice turns in protected terrain.

Jan. 29, 2016, 3:57 p.m. PST

Region: Stevens Pass

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Jan. 27, 2016, 9:15 p.m. PST

Region: East Slopes North - Canadian Border to Lake Chelan

Elevation: Near treeline

Aspect: NE

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: https://goo.gl/IQ4UEA here is a Link to an avanet profile from WA Pass 5580ft in the Silverststar creek drainage. Mark Allen

Jan. 27, 2016, 9:15 p.m. PST

Region: East Slopes North - Canadian Border to Lake Chelan

Elevation: Near treeline

Aspect: NE

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: https://goo.gl/IQ4UEA here is a Link to an avanet profile from WA Pass 5580ft in the Silverststar creek drainage. Mark Allen

Jan. 27, 2016, 8 a.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90
Observation by Nick Pope

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Stemilt Basin, NW rim of basin. Obs from 6100' to 6400', N-E aspects.

Weather: Overcast or obscured all morning as the clouds lowered below ridgetop. Winds were light and var. in the BTL and NTL terrain I was in. At 0815 at 61600' Tair: 4 deg C.

Snowpack: HS: 180-200cm. Upper 20cm wet snow going DF to MF. Saturated layer down 20cm, 2cm thick, maybe pooling on a crust that is now melting. Dry snow below this. 1/11 SH is down 50-60cm, 1/3 SH down 55-70cm. SH layers produced consistent ECTP results. Pinwheels were rolling well to about 60cm diameter. On wetter aspects stubborn loose wet could be cut with skis. At 4600' noticed a road cut with lots of buckling and a wide open glide crack.

Avalanches: Looked at one of the avs, mentioned here by Jamie Tackman 1/25, from the last natural cycle a week or more ago. This one was 30m x 30m, 55cm deep, went on 1/3 SH. Slope at crown was 32deg, but rolled to >35deg below.

Jan. 26, 2016, 12:33 p.m. PST

Region: East Slopes North - Canadian Border to Lake Chelan
Observation by SKIER-X

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Silverstar Region

Route Description: N. aspect 3400'-4400' 30deg. old growth with openings.

Weather: 31deg, lt. freezing mist to grauple to mist to lg. flakes sustained ... and snow increasing in intensity until departure at 13:33 hrs.

Snowpack: 12" new snow from thurs event is topped with .5 cm hoar frost from 1-24 overnight , 1cm. new snow over that and a combination grauple rain mix forming a fragile sealed cap with another 2" snow over . Ski pen was 13". Rollerballs at 12:00 prior to exit. Drip ice crust under canopy. Deep , soft , and easy in openings. Must be present to win !

Avalanches: No active sightings from today.

Jan. 25, 2016, 4:05 p.m. PST

Region: Stevens Pass
Observation by Matt Hartman

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Skyline-Tye Peak-Moonlight

Route Description: Skied up Skyline. Dropped North and skinned up to Tye Peak, skied SE and ascended to Moonlight, skiing East to PCT. Skied all aspects but West.

Weather: Sunny in AM with increasing cloud cover and very light snow showers in afternoon. Warm up on solar aspects was evident early in the day and slowed with cloud cover.

Snowpack: Ski test up to 35-40 degrees showed little results. Solar aspects showed wet loose releases in steep terrain that were widespread on slopes over 35 degrees. Shady slopes held excellent snow.

Avalanches: Wet Loose widespread on solar aspects over 35 degrees.

Jan. 25, 2016, 4 p.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90
Observation by Jamie Tackman

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Stemilt Basin

Route Description: Lower Stemilt through to the summit of Wenatchee Mt. Via the north rim.

Weather: Clear, temps ~27f, ight west wind.

Snowpack: After muy ski in Clara lake basin four days ago I was interested to see what conditions were like in the east facing Stemilt, on the way up ski penetration was variable 5cm to 10cm on open south slopes there was a supportable crust, but on other aspect the snow was soft and unconsolidated. A pit revealed 8-9cm of snow (3 days old) sitting on a thin crust, 40 cm and 60 cm down was the same facets I saw in the Clara Basin. ECT results were the same, failure on the 40cm facets on isolation, duplicated twice.

Avalanches: The most amazing observation though, was as I acquired a vantage to see the whole basin I could see that all but a small piece on the very north end had failed right at the break over, it looked like a 50 or 60cm crown, in most places the entire slope released and in some places stepped down to deeper layers. I would guess that some releases were 200m or more. The rest of the story is that the only little piece that had not run had four sets of ski tracks in it! ( from their vantage they could not see the other slopes) Where they skied is the general area I dug the pit. I think luck is a good thing! Also forgot my camera!

Jan. 25, 2016, 4 p.m. PST

Region: Snoqualmie Pass

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Route Description: Skied Commonwealth to Kendall lakes to chutes, which had been skied the day before.

Weather: Overcast and light mist changing to sun breaks as day progressed and mostly sunny at the end of day. Notable warming throughout the day.

Snowpack: Moist 4-6" on top of a rain crust.

Avalanches: Noted many natural loose wet avalanches on solar aspects from the day before. Roller balls on sunny aspects. At the bottom of Silver Twins, a large slab avalanche had released on what we guessed was the buried PWL. Approx 1 m deep crown, 200 m wide. This likely occured during the warmup and rain last week (the debris had new snow on top).

Jan. 25, 2016, 1:33 p.m. PST

Region: East Slopes North - Canadian Border to Lake Chelan
Observation by SKIER-X

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Early Winters to Cutthroat chutes

Route Description: SE aspect cutthroat region .

Weather: Sunny , calm, 30 shade 75 ish sun.

Snowpack: Dripping tree rings to wet and dry new snow seams. crust , wet over cold for 12 plus " ....!! Wide spread hoar frost from last night , .5 to 1 cm.

Avalanches: 2-3'crown on n.w. wind loaded slope approx. 40 deg. 6500' . West edge hwy 20 , E. aspect , cutthroat rd. to cutthroat chutes , 20" crown releases entire length of road cut and depositing on to hwy. Activity was recent but not from today.

Jan. 25, 2016, 8:02 a.m. PST

Region: Stevens Pass

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Jan. 24, 2016, 2:30 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River

Elevation: Above treeline

Aspect: NE

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Comments: 1 finger wind slab, 6in deep on density change in new snow, propagated approx 150ft, ran 300ft, r1d1

Jan. 24, 2016, 2 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by Alasdair Turner

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Mount Rainier Paradise mazama bowl west aspect

Snowpack: We observed a weakness within the storm snow on the colder west aspects in areas somewhat shaded by trees. Hand sheers located a weak layer at 20cm down. Test results as follows: CTM 20 Q1 ECTN 8

Jan. 24, 2016, 1 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by Skyler Mavor

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Bullion basin, up to ridgeline. Skiied on E aspect

Snowpack: Pit at 6200', ESE aspect. 7 inches of fluff on top of pencil hardness rain affected snow. The crust was generally supportable, fortunately. The rain seemed to have penetrated roughly 30cm. Below that was significantly less hard snow, fist hardness for the first 10 cm below the rain effect, grading downwards into consistently 4 finger snow. ECTX, which was encouraging. we did manage to break the column with additional force after the usual 30 at the rain penetration interface, with a Q3 surface and no propegation. It's not of any significance now, but the new fluffy storm snow on top of the crust consistently showed signs that it wasn't bonding all that well. I'll be keeping my eye on that spot for the next storm.

Avalanches: Saw a couple old avalanches, probably 2 days old. Both on E aspects. One looked to be about a foot deep.

Jan. 24, 2016, 1 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by Skyler Mavor

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Snowpack: Edit to my observation from a second ago: 7CM of new light storm snow, not 7 inches.

Jan. 24, 2016, 1 p.m. PST

Region: Stevens Pass
Observation by Nick Pope

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Stevens Pass, upper Mill Creek drainage

Route Description: From ski area to Lake Susan Jane and then northeast. Mostly between 4200' and 5400', BTL and NTL.

Weather: Temps below freezing all day. Winds light and var. Sky broken becoming few. Some solar effect on westerlies in the afternoon.

Snowpack: 10-15cm new from 1/23 over rain crust from 1/22. Bond to crust was good. Bond below crust to 1/21 snow wasn't so good. Tests would shear at this shallow interface. Overnight wind transport had built wind slab in the HST to a max thickness of ~30cm. These showed minimal reactivity. 1/11 and 1/3 SH were present down about 70 and 100 respectively. These were seen at 4600' and 5200' on northerly slopes. SH produced no results in tests and were seen to be bonding well to consolidated snow above and below them. Ski quality above 4500' was ok given the set up.

Jan. 24, 2016, noon PST

Region: Stevens Pass
Observation by Michael Haugen

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Union Peak to Jove Peak. Noted a variety of wind affected features on ridge tops. Wind slab appeared very localized near top of ridges. Dug a partial profile on SSE slope of Jove peak at 5500'. Snowpack appeared mostly right side up with mostly rounded grains or mixed forms below new snow. Thin breakable rain crust ~10-15cm down. Did not locate SH layer. CTM Q2 x2 at 50cm on layer with needle/dendrites larger than 2mm.

Route Description: Union Peak to Jove Peak summit. Skied South slope of Jove. Heavy but excellent snow above 5000ft!

Weather: Partly cloudy.

Jan. 24, 2016, 11:30 a.m. PST

Region: Stevens Pass
Observation by Nick Lyle

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: We dug a couple of snow pits near the ridge line on Skyline Ridge. The first pit (11:30) was dug on a low angle (20 degree slope) East aspect (95 degrees) on the south side of the ridge, above Skyline Lake at 5157 feet. The second pit (1:30) was on a low angle (10 degrees slope) west aspect (285 degrees) just on the north side of the ridge at 5276 feet.

Route Description: We took the road up to Skyline from the parking area on the North side of Steven's Pass, across from the ski area.

Weather: Partly Cloudy with sun breaks, just above freezing temps, almost no wind.

Snowpack: In the first pit we dug (East Aspect, see above), we found 22cm of new snow (fist hardness) which firmed up as it reached a 1cm ice crust (pencil hardness) at 22cm depth. Below this the snow was finger hardness all the way down to a clear weak layer between 50cm and 53cm (fist hardness). Below the weak layer the snow continued to be 1 finger hardness all the way down to the bottom of the pit at 100cm. The weak layer at 50cm depth contained large-ish loose grains (decomposing and fragmented particles with the look of near-surface facets) and we assume it was the PWL we have been reading about. In the second it we dug (West aspect, see above) we found softer snow with a very similar profile. The top layer was fist-hardness new snow to 22cm where we found the 1cm (pencil hard) ice crust, then fist-hard snow again to 50cm, where we did find the weak layer again, though it was harder to detect in the softer snow. Below 56cm the snow was firmer (4 fingers) all the way down to 110 cm. Two compression tests (one in each pit) delivered results of progressive collapse at the ice crust (moderate loading) and sudden collapse of the weak layer at 50cm (hard loading). It did not look like recent rains had any significant impact on the snowpack near the ridge crest (5000 feet) on Skyline Ridge. At lower elevations (below about 4400 feet), in the trees, the snowpack had been pounded into stability by tree-bombs and rain.

Avalanches: None observed.

Jan. 24, 2016, 11 a.m. PST

Region: Snoqualmie Pass
Observation by Dave Seman

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? Yes

Area Description: Alpental valley, Source Lake to Chair Peak/SL Divide.

Weather: Source Lake obs. 09:45 hrs broken. T air 33d F. By 10:00 hrs significant increase in solar impact noted with increase sluff activity from cliff areas.

Snowpack: Source Lake obs. 9" +/- overlying rain crust.

Avalanches: Obs from entrance to Pineapple Basin. At about 11:00hrs natural wet loose release from about 5200ft, east aspect cliffs below Chair. Ran about 1200 vert, entrained new snow, D2. Slide split at apex of terrain feature fan above Source. Majority ran lookers left, with minor split lookers right of apex. Right split caught a party, apparently no burial. Other parties in the area continued to proceed up the fan, across the slide toward SL Divide.

Jan. 24, 2016, 7:45 a.m. PST

Region: Stevens Pass

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Jan. 24, 2016, 12:06 a.m. PST

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Jan. 23, 2016, 5:26 p.m. PST

Region: Stevens Pass
Observation by Matt Hartman

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Skyline Ridge

Route Description: Skied up road and down South-SW facing shots back to up track when ski quality was reduced due to crust formation from the past 24 hours.

Weather: Sky: Overcast, Wind: C, Precip: S1 to S-1 all day.

Snowpack: Dug a test pit on a SW slope (35-40 degree angle). HS: 265cm. Problem Layer is from 245cm to 215cm down and is 4F rounding facets. It is in between 1F rounds on both sides. CTH RP Q2 (above and below layer failed on two steps simultaneously). ETC N 25 (propagated across two thirds of the column above at 245cm). The crust at surface is breakable and is lessening impact on the layer but not capping it. Hazard rating for the day seemed spot on.

Avalanches: Evidence of widespread wet loose from last 24-48 hours. Most were triggered by tree bombs.

Jan. 23, 2016, 2 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by Alasdair Turner

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Mount rainier paradise east aspect slope

Weather: Moderate to heavy snow throughout day

Snowpack: No signs of persistent weak layers. They were destroyed by the rain. 25 cm of storm snow on top of wet crust The storm snow is well bonded to crust. Below crust is wet rounds with some crusts in between. CTH Q3 @50cm. ECT No result

Avalanches: None

Jan. 23, 2016, 1 p.m. PST

Region: Stevens Pass
Observation by Ryan Murray

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: CPC Yurt Zone. 2mi nw of Stevens.

Route Description: Made OBS from 4500-5400' mostly on W and NW.

Weather: Lt. Snow and Lt. Westerly winds.

Snowpack: Dug down to Jan 3 and Jan 11 SH/Fc layers both In Undisturbed snow and disturbed locations where a widespread natural storm slab avalanche cycle running up to 700' across most of the bowl had occurred. SH now buried at 90 and 120cm and appx 60 and 80cm below new bed surfaces. ECTX on these layers although heavy taps after the 30 loading steps still produced propagation in 2 profiles in very protected spots. Rain did not percolate to these layers at elevations above 4500' and we noted that the natural cycle did not seem to step down to the deeper layers in any locations.

Avalanches: Photo shows natural storm slab cycle with up to 40cm crowns in nw facing terrain.

Jan. 22, 2016, 1 p.m. PST

Region: Snoqualmie Pass
Observation by Pat Ellis

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Commonwealth Basin

Route Description: Gully to the wilderness boundary then to the first log bridge, crossing commonwealth creek

Weather: Rain

Snowpack: Very soft

Avalanches: Tree bombs were the problem. This is a safe route from avalanche danger . The rain on Thursday night cleared a lot of the snow from the trees so tree bombs were not a serious problem in low elevations. Upon entering the basin the temperature was initially low and the trees were heavily loaded. The combination of rising temperatures and the rain became a serious problem. Huge tree bombs began unloading. I was hit by one and buried up to my knees and was unable to extricate myself without my shovel. Luckily I was not injured. This is going to be a serious problem on Saturday if the temps stay elevated.

Jan. 21, 2016, 3 p.m. PST

Region: East Slopes North - Canadian Border to Lake Chelan
Observation by Ed Rundle

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Snowpack: Previous night's snow sliding easily off of ANYTHING steep enough, ANYWHERE. From a 5' bump in the woods to 200' wide releases in bigger start zones. Some had naturaled, others with traversing just above breakovers. Snow "in track" entrained with start zone snow. Some big powder clouds. NE to NW aspects from 3200' to 6200' all the same. (Entered 15:00 for time, actually all day long)

Jan. 21, 2016, 12:33 p.m. PST

Region: East Slopes North - Canadian Border to Lake Chelan
Observation by SKIER-X

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: N aspect 3400'-4400' Silverstar region.

Route Description: Heavy old growth treed, gullies, ribs, pillows ,undulating , outcroppings, glades and openings ,wind sheltered.

Weather: snowing 2 " per. hr. continuous , warming , 31 deg . no wind.

Snowpack: 12" new snow , warm over cold . no whumping or shooting cracks. no pit profile .

Avalanches: Lg. tree bombs were triggering any rollovers to release. If this was above openings the impact would trigger 12" crown releases the full width of the open slope , est. 100' and run from 100-150' depending on steepness. Many freshly fallen trees . Active tree bombing and treewells were major concerns. Bomb blasts were powerfull, and chilling. A calculated exit was executed successfully.

Jan. 21, 2016, 11 a.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90
Observation by Nick Pope

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Blewett Pass, 2 miles SE of pass.

Weather: Overcast. Valley fog at times up to ~4300'. Temps from 0 C, up to 2 C at 5900' by 1400. At noon, 5100', Tair:1.5 C, Tsurf:0 C, T20: -3 C. Winds L- M from south. No precip. No blowing snow, but signs of light previous transport from the north.

Snowpack: HST: 15cm HS:100-120cm Found 1/11 SH down 40cm and 1/3 SH down 60cm, in various sites from 5100' meadow to 5900' below ridgetop on northerly aspects. 1/11 very reactive to tests, CTM SC & ECTP22. In some hand shears column failed on isolation. 1/3 also reactive with several CTH SP. Small test slopes produced limited results. 30cm storm slab would move on >35deg rolls. Steeper rolls or unsupported features might get 1/11 to shear but with minor propagation. No whumps or cracks noted. With the warm sticky snow cornices had fresh growth. Noticed one fridge sized chunk from a recent natural cornice fall.

Avalanches: Cornice fall, 3'x3'x6' block, natural.

Jan. 20, 2016, 5:26 p.m. PST

Region: Stevens Pass
Observation by Matt Hartman

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Skyline-Moonlight

Route Description: Skied up road and over to Moonlight. Descended to PCT.

Weather: Broken or less cloud cover all day. Temps warmed significantly at 1200pm. No precip.

Snowpack: Windslabs on leeward (NW to NE). Very evident from strong E winds yesterday. Dug a hand pit on a SW aspect to see if any SH from early Jan was present. It was not. snow is rightside up 4f to 1F down 1 meter. Skied a somewhat conservative line in Moonlight (30-35 degrees) and saw no signs instability. Did not did to observe SH on E slope. It was not reactive on steep test slopes below ridgetop. From 4200' and under at 1200pm, warming was evident in the snow pack and in trees.

Avalanches: None. Evidence of widespread loose dry from Monday on steep slopes (40 degrees estimate).

Jan. 20, 2016, 2 p.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: East and south Aspects on Icicle Ridge.

Weather: Warm and Sunny.

Snowpack: Warming surface snow with large pinwheels and tree bombs.

Avalanches: Multiple Wet/loose R1D1-D1.5 slides observed from skiers descending.

Jan. 20, 2016, 11 a.m. PST

Region: Mt Hood
Observation by Alex Laudon

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Mt Hood, Timberline lodge area, ESE 35deg wind loaded test slope.

Weather: Calm wind, unrestricted visibility, high overcast (>12,000ft), 26F.

Snowpack: This ESE, 35deg test slope was wind loaded and reacted to ski cut. Formal test resulted in ETCP13 down 40cm with clean shear (whole block moved out a couple of inches). The weak layer was some F hardness snow from a few days ago. The overlying slab varied from 1F to 4F.

Avalanches: None observed up to 10,000ft on Mt Hood south climb route. Didn't see evidence of avalanches on summit slopes. Above 8,000ft, snow surface was covered with small rime ice.

Jan. 19, 2016, 4 p.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90
Observation by Jamie Tackman

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Mission peak

Route Description: Clara Lake this was a quick trip, visibility was poor, so I was unable to evaluate surrounding terrain.

Weather: Snowing temps ~28

Snowpack: Dug a quick pit, on a modest slope, and while digging I created a fracture that ran along the slope break over. Two facet layers one at 30cm and 50 cm ECT failed on 30cm layer, on column isolation. I continued and the 50cm failed on 15. This was duplicated twice.

Jan. 18, 2016, 7:37 p.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90

Elevation: Below treeline

Aspect: NE

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Comments: Two small avalanches triggered on small slopes by our group of snowmobiles. 12 inch crown.

Jan. 18, 2016, 6 p.m. PST

Region: Stevens Pass
Observation by Matt Hartman

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Yodelin N Facing Trees.

Route Description: Skinned up from Yodelin Parking to saddle and dug pits. Skied timber and shrubs down.

Weather: Broken Skies all day. Good Visibility. Light winds shifting to East. No precip. Below freezing all day.

Snowpack: On N facing Slopes, both Jan 3 and Jan 11 SH layers are present. Jan 11 is under a light crust and very subtle. Jan 3 is thicker but collapsed. HS 280cm. CTM RP Q2 @260, CTM SC Q2@ 230 cm (Jan 11 SH), and CTM SC Q1 @ 195 cm (Jan 3 SH). ETC N, after the test ended I put my shovel behind it and the whole column sheared SP. The slope angle for our pit was about 20 degrees. Likely an ETC on steeper terrain would propagate during the test.

Avalanches: Saw small storm slabs and loose snow avalanches on the S Face of Lichtenburg. They were widespread on steep terrain.

Jan. 18, 2016, 2 p.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? Yes

Area Description: Wedge Mountain, NW aspect, near 4,500ft.

Route Description: Skinned up Northern ridge of Wedge, avalanche was triggered just off the ridge crest on the steeper NW face as we skied back down the ridge.

Weather: Above inversion cloud layer, temps near or just above freezing.

Snowpack: Quick pit on lower elevation NE aspect did not reveal sensitive storm slab layer.

Avalanches: 18-24" crown, recent storm slab. Skier triggered, 1 skier caught and carried about 100', not injured. Slid on denser snow layer, did not step down to deeper crust layer.

Jan. 18, 2016, 1 p.m. PST

Region: East Slopes North - Canadian Border to Lake Chelan
Observation by Zachary Winters

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Washington Pass area, 6100ft, SSE aspect

Weather: High pressure and near freezing temps in morning with insolation effects, cooling with cloud cover by midday.

Snowpack: Two layers of concern found, a storm slab from recent snow over the weekend, and buried surface hoar above early Jan crust. - Storm slab from new 1/16-1/17 snow with slight insolation crust on surface, 30cm, easy CT7, Q2 resistant planar, ECTN. - Buried surface hoar above hard (P/K) crust, 60cm, moderate CT13, Q2 RP, ECTN. Non-standardized tests on extended column suggest some potential for propagation. 4mm intact buried surface hoar at WL.

Jan. 17, 2016, 1:30 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Silver Basin Crystal S. Backcountry. SE Trees.

Route Description: base area up past quicksilver lift into silver basin. Followed old skin track through the lower trees turned around at 6200' in the trees just below more open slopes.

Weather: Snowing hard starting out, snow stopped and it warmed up.

Snowpack: Encountered dense wind slab about 6000' and had shooting cracks at 6200' on SE facing slope. New snow accumulation was 6-12".

Avalanches: None.

Jan. 17, 2016, 1:04 p.m. PST

Region: Snoqualmie Pass

Elevation: Near treeline

Aspect: W

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: Small Avalanche happened up little gold Creek. No visible cause.

Jan. 17, 2016, noon PST

Region: East Slopes Central - Lake Chelan to South of I-90
Observation by jamie tackman

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: Mission Peak

Route Description: Mission Peak via Clara Lake trail

Weather: Snowing, with breaks, wind westerly, temps 27-29

Snowpack: We saw and remotely triggered several avalanches, no natural avalanches were observed. Shooting cracks, settling and avalanche were observed on primarily east aspect slope. Having skied the area regularly throughout the last six days we were surprised by the touchy nature of today's snow.

Avalanches: The reactive layer was the buried surface hoar. Skiing the area for the last few days, and given the nature of the last two weather events to come through, prior to the tour we suspected the surface hoar problem had been greatly reduced, that turned out not to be the case. We did ski steep stable slope, but most of the east aspects seemed to be unstable. ECT 15 @ 25 surface hoar but did not displace. Poor light for photos hope it is of some use, shows a step down.

Jan. 16, 2016, 11 p.m. PST

Region: Snoqualmie Pass
Observation by Matt Kurjanowicz

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: E / SE facing slope on Kendall, 3300'

Weather: Clearing with the wind picking up. As the wind picked up tree bombs began to fall extensively.

Snowpack: Hand pit found 30cm+ of wet heavy snow covered by a 0.5cm rain crust of large rounded crystals. Test cuts and jumps on 35 - 55' little test slopes only released the snow directly below the skis. No signs of propagation.

Jan. 16, 2016, 6:15 p.m. PST

Region: Stevens Pass
Observation by Brian Carpenter

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Grace Lakes

Route Description: Cat track from upper parking lot to Grace Lakes

Weather: Snow showers, a few sunbreaks, winds light, temps pretty mild

Snowpack: Fair amount of new snow. Surface snow got denser/wetter as the day went on and it warmed up. Some small rollerballs. The Mountaineers snowshoe class field trip included a demonstration snow pit dug on a roughly NE facing aspect just east of the first Grace Lake. Pit depth about 5' and no sign of any major crusts or PWL. Snow density F at surface to 4f at bottom.

Avalanches: no signs visible in immediate vicinity. during a clearing about mid-day got a glimpse across to the south side of Skyline ridge and did not see any signs there.

Jan. 16, 2016, 2:33 p.m. PST

Region: East Slopes North - Canadian Border to Lake Chelan
Observation by SKIER-X

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: SE aspect 4400' to 6400' Cuthroat region.

Route Description: Steep undulating old growth treed ribbed gullied with gladed openings.

Weather: Lt. snow early to broken skies to snow showers. 28 deg. calm .

Snowpack: 8" new snow over lt. sun crust from 1/14 . Second crust down at about 20" . No whumping , shooting cracks ,tree bombing . Ski cutting produced no reaction. only snow movement was top 8" sluffing with skiers on decent . VERY DEEP TREE WELLS ! HUGE hanging tree bombs !

Avalanches: None observed.

Jan. 16, 2016, 12:01 p.m. PST

Region: Snoqualmie Pass

Elevation: Near treeline

Aspect: N

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Jan. 16, 2016, 11 a.m. PST

Region: Mt Hood
Observation by Luke Levin

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Route Description: Polallie Ridge to Tilly Jane A-Frame.

Snowpack: Snowpit revealed weak layer at 35 cm depth. Low energy failure. NE aspect. 32° slope.

Avalanches: On route from 9 a.m. to 2 p.m. - no avalanches observed.

Jan. 16, 2016, 10:45 a.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90

Elevation: Near treeline

Aspect: N

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Comments: Small slide snowmobile triggered. sear layer about 8 inches under surface. No parties caught in slide.

Jan. 15, 2016, 4:48 p.m. PST

Region: Stevens Pass
Observation by Matt Hartman

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: NW Facing. 5600' outside ski resort.

Route Description: Skinned from ski area to Christmas Tree Bowl and descended to resort.

Weather: Light snow all day, below freezing temps, calm to light winds.

Snowpack: New layers from the last 3 days are upside down and thicker wind slabs forming on leeward aspects. Some have formed distinct hard slabs.

Avalanches: We saw a N-R2-D2 (maybe remote triggered as well) on a NW face at 5600'. The slop angle was 30-35 degrees at its steepest. The wind slab failed on collapsed SH layer from Jan 3. Hand shears at the crown fracture showed easy shears Q1 SP. The windslab was twice as thick as the uniform new snow on other aspects. This begs the question how reactive will this SH layer elsewhere with another 1" of H20 on it where windslabs are currently not present?

Jan. 15, 2016, noon PST

Region: West Slopes North - Canadian Border to Skagit River
Observation by Ben Price

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: Shushan arm

Route Description: The ridge

Weather: Nice and sunny

Snowpack: Thought it was good, not

Avalanches: Remote trigger from walking along the ridge, 2-3 feet deep above the third Gunbarrel, 200 foot propagation

Jan. 15, 2016, 11:30 a.m. PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by Reid Pitman

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? Yes

Area Description: Along a ridge adjacent to the PCT. North facing area that remains shaded. Slope ranges from flat up to 40 degrees along the ridge

Route Description: I hiked up afterwards to see the slide.

Weather: Cold, sunny

Snowpack: 45cm of new snow over existing surface hoar layer that has been observed everywhere.

Avalanches: Skier triggered while touring, fractured above and carried skier through trees. Propagated along a bowl.

Jan. 14, 2016, 2 p.m. PST


Observation by SKIER-X

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Jan. 14, 2016, 2 p.m. PST

Region: East Slopes North - Canadian Border to Lake Chelan

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: Silverstar region , N facing 6000'

Route Description: Steep treed undulateing open pillow skiing with glades

Weather: Sunny, 22deg. No wind.

Snowpack: Wind and storm slab. 8-10" . especially lee of ridges .

Avalanches: Ski cuts triggered slab releases on isolated convex rollovers. No propagation to surrounding snowpack. Bed surface was crust layer about 10" down. Natural realeases were observed on Delancy Ridge.

Jan. 14, 2016, noon PST

Region: East Slopes Central - Lake Chelan to South of I-90

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: North aspects gladed/burn terrain near Leavenworth.

Route Description: Skied northerly aspects 2500' to 5600'. Found quality powder skiing to valley floor. Slight zipper crust on more eastern aspects.

Weather: Clear and below freezing all day. Calm winds today. Evidence of westerlies from yesterday.

Snowpack: HS 130-150cm. Found SH present 35-40cm down up to 5mm mostly laid down from prev strong east winds. CTH Q1(SC). ECTN21. This layer was easy to spot as a thin grey line in the profile. We skied conservatively but felt the slab above it wasn't able to initiate a slide. Avoided a few wind packed denser zones in steep terrain on the descent. More investigation needed to see if it is widespread.

Jan. 13, 2016, 8:50 p.m. PST

Region: Snoqualmie Pass

Elevation: Below treeline

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Jan. 13, 2016, 2:30 p.m. PST

Region: West Slopes North - Canadian Border to Skagit River

Elevation: Near treeline

Aspect: NW

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Jan. 13, 2016, 2:30 p.m. PST

Region: West Slopes North - Canadian Border to Skagit River
Observation by Patrick Kennedy

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: NW Aspect at 5600ft. 40 degree terrain. Crown in a windloaded pocket under a cliff band. Rider had enough momentum to make it to the flank of the slide path.

Route Description: Area known as Widow Trees. Used snowmobiles for access.

Weather: 30 degrees, cloudy, snowing, 15mph west wind, variable visability.

Snowpack: 8-10 inches of new, somewhat heavy, still good snow for riding. Windloaded area had 12-20 inches of perfect wind loaded slab. Bed surface was penetrable with sugar like hoar frost. Avalanche moved quickly.

Avalanches: No recent activity noted other than the one triggered.

Jan. 13, 2016, 10:30 a.m. PST

Region: West Slopes North - Canadian Border to Skagit River
Observation by Joe Hilber

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: AB Bowl Mt Baker Ski Area

Route Description: Top of chair 5

Weather: fog dog

Snowpack: 3-4' wet heavy on slippery surface

Avalanches: Extreme danger at 4500 ft North facing slopes Massive crowns at up to 4' deep that run. Good luck.

Jan. 13, 2016, 7:45 a.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90
Observation by Nick Pope

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Blewett Pass, 1.5 miles east of pass.

Weather: Overcast skys, light SW winds. At 0745, 5160' Ta:0?C, Tsurf:-2?C,T20:-2.5?C. Precip varied through the morning with sleet, freezing rain and fluffy snow. No blowing snow observed.

Snowpack: New 17cm from last night. 1/3 SH was down ~20-25cm. In hand and ski tests new snow would shear off cleanly with no propagation. Shear plane appeared to be above 1/3 SH. On a NE slope, 13?, 5160', found 12/16 SH down 55cm. Looked about 6mm here, continuing to round. In hand and shovel tests this felt resistant to shear but had a ECTP23 on this layer. PenFoot:50cm, PenSki:20cm, Surf F/E: PP 1-2mm.

Jan. 13, 2016, 6:30 a.m. PST

Region: Snoqualmie Pass

Elevation: Below treeline

Aspect: N

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: Sticking to lower angle slopes near Hyak, found 6-10 inches of new although heavy snow. Wind deposited deeper pockets but observed minimal wind slab development. Skied a few steeper convex sections and found no signs of instability, still stayed clear of larger open steeps. Felt like a slight inversion up high, comfortable skinning in base layer. Overall good skiing on heavy albeit totally shreddable snow

Jan. 12, 2016, 6:06 p.m. PST

Region: Stevens Pass
Observation by Matt Hartman

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Skyline-Moonlight. East Facing 5,000'.

Route Description: Skyline up to Moonlight. Skied 2 laps in Moonlight.

Weather: Light snow all day. Winds E-S Light to Moderate.

Snowpack: Handshears show unreactive surface hoar layer down 30cm. It is compressed and bonded well to new snow. Pole tests show rightside up, deep snowpack. Ski tests yield no signs of instability up to 40 degrees. Ski quality is very good.

Avalanches: None.

Jan. 11, 2016, 5:26 p.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90
Observation by Matthew Hartman

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Stemilt Basin East-North facing 5,000-6,000'.

Route Description: Toured North of Mission Ridge Ski Area and found excellent ski conditions on all aspects.

Weather: Below 0 C. Low winds out of E-N and very little precip. Mod-Low visibility.

Snowpack: HS 100-120 cm depending on aspect. Pole tests show a mostly right side up snowpack with some basal layers feeling softer than those above. Surface Hoar and rimed forms are widespread on surface.

Avalanches: None. Skied 30-35 degrees slopes with no signs instability.

Jan. 11, 2016, 9 a.m. PST

Region: Snoqualmie Pass
Observation by Ben Paxson

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Lower elevations of the Snow Lake trail, traversing the slopes on the SW side of Snoqualmie Mountain, this past SATURDAY (1/9)

Route Description: Generally followed the summer Snow Lake trail until the fork between Source/Snow Lakes, then turned up towards Snow Lake with our sites set on the top of the ridge just south of the lake. Shortly after, we left the established trail and headed left to cut our own more direct route up the steep slope (through the trees mainly) to attain the ridge. We caught up with the established trail once again below the cliffs in order to get around them (visibility was poor since we were mostly in the clouds)

Weather: Low clouds, temperatures near freezing in the lower elevations. Moderate winds (seemingly) out of the South and much colder up on the ridge.

Snowpack: The snow seemed well-packed and stable for the most part. I saw a few pinwheels on the bare slopes in the lower elevations that looked a week old or so, so they didn't bother me too much. On the lower elevations (S-facing aspects) there was a lot of evidence of snow breaking off and rolling down the hill from some of the small cliffs above the trail, but nothing that seemed to propagate as it headed downhill (smaller-than-snowball-sized debris chunks scattered about on the surface of the snowpack)

Avalanches: On the way back down towards the end of the day, there was evidence of a very small slab avalanche (~4" slab, but it was also very wide) about a mile from the trailhead, maybe 50 yards above the trail. It did not travel far since the slope was quite shallow (estimating 20-25*). It did not cross the trail. I'm guessing it may have been initiated by tree bomb(s) since it was getting quite warm in the low elevations by 3-4pm. Be careful out there guys. Avalanche danger is low out there but it can still happen. This trail was very busy this past weekend. I was glad to see some people turning around due to their own skill/comfort levels with conditions.

Jan. 10, 2016, 6:13 p.m. PST

Region: West Slopes Central - Skagit River to South of I-90

Elevation: Near treeline

Aspect: NE

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: surface hoar on a crust, all shaded faces

Jan. 10, 2016, 2:20 p.m. PST

Region: Mt Hood

Elevation: Near treeline

Aspect: NE

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Jan. 10, 2016, 2 p.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90
Observation by Bradley Gasawski

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: 3/4 mile south of Blewett Pass.

Route Description: We skied the xc trails at Blewet Pass and summitted a small nub near trail xc 141. We dug a pit to find HS at 50 cm.

Weather: Cloudy with no precipitation or wind.

Snowpack: HS = 50 cm. Boot Pen near pit was 42 cm. (This was surprising) Facets were present in the bottom 26 cm. A melt-freeze crust was found at 26-32 cm. Performed a shovel shear test (STE) to test interface between melt-freeze crust and the 18cm layer of 0.5mm rounded grains above it.

Avalanches: Saw evidence a small slab avalanche on a steep embankment along Hwy 97 south of Blewet Pass. Roller balls were seen along the Hwy 97 as well.

Jan. 10, 2016, 1:30 p.m. PST

Region: Snoqualmie Pass
Observation by Mike Daly

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Clearing at the top of Cave Ridge, northern aspect, 15deg incline.

Route Description: Commonwealth Basin to Cave Ridge and return.

Weather: Ascended through the murk (4400'->5150') to clear at the top of Cave Ridge (5250'). Winds light and variable. Air temp -6c.

Snowpack: HS 305cm. Surface hoar (SH) up to 1cm covering most aspects above the clouds (5100'), significantly less on southern exposure. 25cm of DF - 1mm diameter, followed by 125cm of 1mm RG to the bottom of the pit at 150cm. Resistance varied from F -> 4F -> 1F -> 4F -> 1F with no identifiable crusts or clearly defined interfaces. observed CTN

Avalanches: No avalanches observed. Significant hardening/crust in the trees from tree bombs. Recent rollers up to 30cm below the rocks on S-SW aspects. No activity observed today. Snow surface remained cold/dry/crusty in the area. No running water on the rocks.

Jan. 10, 2016, 1 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by Tod Bloxham

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: MRNP Paradise

Route Description: Paradise - Edith Creek - Mazama Ridge

Weather: Sunny and warm, intense sun in afternoon

Snowpack: 300cm at 6000', Light snow on breakable crust; trace of new; SH layer at 20-30cm. Homogenous 30cm+. Wet snow on 25* S aspect at 1pm.

Avalanches: Wet loose on S/SW at 6200'

Jan. 10, 2016, 1 p.m. PST

Region: Mt Hood
Observation by Geoff Lodge

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: White River canyon tour.

Route Description: Entered high around Timberline Lodge, then shredded moraines into the confluence of the canyon.

Weather: Weather was bluebird, light east winds on top of the ridges, -1 C for the day time high. Solar warming was present, but not very intense. Only steep slopes facing the sun got the direct input.

Avalanches: We noted one, D 1.5-2 size, wet loose slide higher in the canyon (East Asp, ~7500', and is a repeat offender. This slope is steep and gets the first-late morning sun.) This was the only action we saw in the canyon for the day. Of note: Saturdays storm changed to light rain in the afternoon below ~6000'. When we skied down into the confluence of the canyon around (~5300) on Sunday, there was numerous, D1, wet loose slides everywhere. The debris and surrounding surface snow was frozen solid, so I would assume these slides were from the previous afternoon. There was also a bunch of pin-wheel/roller-ball action on most surfaces. With the newer snow coming in this week, I'd be carful with this frozen chunder thats getting lightly buried. It looked horrible to ski over. Watch those knees! Geoff Lodge AIARE 3-Oregon Ski Guides

Jan. 10, 2016, 12:27 p.m. PST

Region: Snoqualmie Pass

Elevation: Near treeline

Aspect: S

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Comments: Snowboarder triggered small slide near denny Creek. He was able to ride out of the slide into a safe zone without being caught. Fracture was 4-6 inches deep most likely from the new snow the past week. The December storm snow stayed stable.

Jan. 10, 2016, 11:30 a.m. PST

Region: East Slopes South - South of I-90 to Columbia River
Observation by Reid Pitman

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: N/NW aspects, shaded areas. near the PCT via crystal Mountain ski area. 6300' elevation.

Weather: Clear

Jan. 9, 2016, 3 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by Ian Nicholson and Lizz Meder

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Edith Creek Basin, East Face of Alta Vista, Paradise, Mt. Rainier Nt'l park.

Weather: Mostly overcast skis with brief sun breaks in the morning lead to increasing clouds and light snow in the later afternoon. with very mild temperature.

Snowpack: We observed SH on the surface survived most of the way through the day, but was mostly destroyed but the warm temps The newest melt freeze surface crust was 2-3 cm thick (P) and supportable in places as long as it wasn't too steep. Below the melt freeze crust was the Jan 3/4 storm snow that is still slightly upside, but still all 4F. That sat on the new years eve sun crust and below that was progressively more resistant layers. We preformed several snow profile tests and observed CTH Q2 down 18 cm x4, CTM Q2 down 17 all failing above the New years crust within the lower portion of the Jan 3/4 storm snow .

Avalanches: We observed several recent D1 Loose Wet avalanches on steeper SE-S-SW faces most often starting from rocks, trees or other shallow areas. Despite the overcast skis we did still observed roller balls on SE aspects.

Jan. 6, 2016, 8:45 a.m. PST

Region: Snoqualmie Pass

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: Snoqualmie Mountain

Weather: Overcast, 30F trending warmer as clouds broke up near 11a.

Snowpack: Boot top new powder from 1/3-1/4 still soft.

Avalanches: Tree bombs produced minimal slides but hazard from above is high. Only areas we were able to trigger any slides were convex features. S/SSW @ 4000' small loose dry windslab skier triggered on 40* aspect below treeline. Ran ~75' on a convex feature Tree bombs caused concern around 11a as soon as the clouds began to lift/breakup

Jan. 5, 2016, noon PST

Region: East Slopes Central - Lake Chelan to South of I-90

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: Red Mountain at Salmon La Sac, near Roslyn

Route Description: After observing instabilities, we skied lower angle open trees along the ridge.

Weather: Cloudy with light snow and light wind.

Snowpack: Observed newer storm snow (25-30 cm, presumably fallen since New Years) was weakly bonded to older, settled powder. In lower elevations, we found what appeared to be buried surface hoar (see video).

Avalanches: Skiing from our high point at approx 5200', N aspect, ski cut a steep slope and was able to trigger a small slab avalanche running the length of the slope in the new snow. It did not propagate across the slope.

Jan. 5, 2016, 8 a.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90
Observation by Nick Pope

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: 1/2 mile S of Blewett Pass

Weather: Overcast with low clouds at ridge top level. Snowing lightly. Wind from the east and light. No blowing snow. T air:-4.5C, T surf:-4.0C, T 20:-6.0C, PenSki:25cm, PenFoot:45cm, SurfaceF/E: PP/2mm

Snowpack: HST:20cm F+ laying over SH 10mm with 5cm of FCsf .5-1.0mm beneath. On a north aspect at 4500', in a previously wind loaded area HS=145cm. Midpack in this old wind slab was 1F-P DF and RG 0.5mm. 12/16 SH is at 50cm. On a south aspect at 4500' HS=55. Same HST with SH and FCsf beneath. A 1 cm P crust of MFcl lay below the FCsf. Beneath the crust was 20cm of FC 1-2mm and MF 2-3mm at the ground. New snow would shear at the old snow interface, often failing in the FCsf. Shear was isolated in front of the shovel or ski and would not propagate beyond. Fairly un-cohesive new snow at the moment. The new snow observed was not wind effected.

Avalanches: Very small loose dry avalanches noted along the highway in steep areas, running within the new snow.

Jan. 4, 2016, 8:01 p.m. PST

Region: Snoqualmie Pass

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Jan. 4, 2016, 2:30 p.m. PST

Region: Stevens Pass

Elevation: Near treeline

Aspect: NE

Did you see any avalanches? No
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Comments: Wind slab sliding on hoar frost. Point release triggering a soft slide that ran approx. 200 meters 50 meters wide. 30cm deep. Running quickly on steeper terrain

Jan. 4, 2016, 1 p.m. PST

Region: Snoqualmie Pass

Elevation: Below treeline

Aspect: S

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: Tree bomb triggered storm slab avy with 10in crown, over covex roll at top of small cliff R1 D1. Propagated 20-30 ft at crown. Futher inspection of snow showed F to F+ new snow on top of 4F/1F older snow. We were at the 2nd drainage along the summer snow lake trail at alpental

Jan. 4, 2016, 1 p.m. PST

Region: Snoqualmie Pass
Observation by Paul Bongaarts

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: South aspect where 2nd drainage meets small cliff band, just north of the summer snow lake trail. Elevation was around 3400' (47.4494, -121.4288)

Weather: Overcast, new snow since overnight and in AM

Snowpack: ~10 inches of 4F to 4F+ snow on top of 4F/1F snow. Did not do comprehensive pit analysis.

Avalanches: See photo. Tree bomb initiated R1/D1 storm slab release at the top of the cliff, which propagated the length of the cliff. Additional release noted at the bottom of the photo. Aspect was south facing and likely ~40 degrees (but not measured)

Jan. 4, 2016, noon PST

Region: West Slopes South - South of I-90 to Columbia River

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Jan. 4, 2016, 10 a.m. PST

Region: Stevens Pass
Observation by Dan Veenhuizen

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: White Pine area. 5800', NE aspect.

Weather: Light snow showers, light E winds, skies cleared throughout the day.

Snowpack: HST of 15cms, HS 110-170. Found intact buried 1/3 SH layer. CTV SC on this layer at 15cm down. Generally well bonded rightside up midpack below this and above the 12/9 rain crust. 12/9 crust down about 130 in this area.

Avalanches: Touchy very soft storm/wind slab near ridge tops on all aspects. Touchy loose dry sluffs in steeper terrain. D/R 1's. Nothing stepping below new storm snow.

Jan. 2, 2016, 10:09 p.m. PST

Region: West Slopes North - Canadian Border to Skagit River

Elevation: Above treeline

Aspect: N

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: Nice stable right side up snowpack on mount Ann. No wind slabs too speak of on the north face o our getting up there. Not even growing facets! Sun crust is baking south facing stuff though...

Jan. 2, 2016, 6 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by Brian Carpenter

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Mazama Ridge at MRNP

Route Description: Valley Road to 4th Crossing, then up to Mazama Ridge. Went south along the ridge as there was less wind.

Weather: Really fierce winds in exposed places along the ridge. Blowing snow felt like sand peppering your face. Winds from the ENE. If you could escape the wind in a sheltered spot the sun felt kind of warm

Snowpack: Lots of amazing sastrugi formations. Like a snow desert on top of the ridge, lots of blowing snow. Minor wind slabbing. A quick and fairly shallow (48") southwest-facing pit showed only 1F snow all the way down, no layers or crusts. Isolated a column but a CTM test did not result in a break. Shovel shear produced a nice clean break about 40" down from the surface. Wind seems to have broken down or prevented surface hoar from forming in many places. Lots of surface hoar in the Longmire area, which is protected from the winds, but not much up at Paradise.

Avalanches: Saw a bunch of little loose wet releases on the westerly slopes below Skyline ridge.

Jan. 2, 2016, 9:30 a.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90
Observation by Nick Pope

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Blewett Pass, west of pass.

Weather: Clear skies. Valley temps from -16 C to -11 at 4500' ridgetop. Light winds from NE.

Snowpack: Surface hoar widespread, mostly 10-15mm but up to 33mm. This is atop a few cm of faceting snow from last week. Beneath these on solar aspects was a weak sun crust. Midpack mostly consolidating but for 12/16 SH down about 50cm. Found this in multiple sites from valley at 3300' and up at ridgetop, including solar aspects. On a SE 20 deg slope, this layer produced a CT23 RP, ECTP23 & PST 56/100 (End) down 45cm on 20151216. Slightly more reactive here perhaps due to slight suncrust beneath the SH. HS averaged 80cm. Old signs of wind loading. No results to ski tests.

Avalanches: None observed.

Dec. 31, 2015, noon PST

Region: Snoqualmie Pass

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? Yes

Area Description: North facing slopes of the ridge above Kendall Lakes (Kendall Chutes)

Route Description: Skinning up to the "mainline chute" of the Kendall Chutes (approached via skiing Commonwealth Basin and Sterling Direct)

Weather: Clear, cold and windy.

Snowpack: Mostly dry, unconsolidated power, which some subtle crusts in some places, and some new shallow wind-affected/windslab in others (lee slopes near ridgelines).

Avalanches: While skinning up to the "Mainline Chute" I set off a very small wind-deposited slab which propagated above me into a small, shallow dry/slab windslab avalanche that carried me about 50-100 feet with no burial or injury.

Dec. 31, 2015, 10 a.m. PST

Region: Snoqualmie Pass

Elevation: Near treeline

Aspect: W

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: On the west / leeward side of Tinkham, snow below the rideline was wind loaded for 50 - 100 feet below the crest (at 4.8K), and readily cracked, with limited propagation. This included the upper reaches of the Twin Lakes Couloir / Zipper Chute, which we declined to ski. Descending in the trees on the same aspact further south, the top 6 inches of snow were highly faceted and rotten feeling, but on a stable / solid base.

Dec. 31, 2015, 8:15 a.m. PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by Tim Kirk

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Above Narada Falls / Inspiration Point - MRNP

Route Description: Our party of two were coming out from an overnight in the Tatoosh area - following the road route from Reflection Lake. When we arrived at the avalanche zone above Narada Falls, we observed many wind-blown features on the road and the route was completely covered. Further progress on the south end of the zone demonstrated some cracking (18" to 24") in the front of the snowshoes. Snowpack analysis reveled a wind-slab had been formed from the previous nights wind. Additionally, some surface hoar was observed on the night prior in the Reflection Lake area. We deemed the route too dangerous and retreated to the Mazama Ridge route for safe crossing.

Weather: Clear sky with variable winds at 15-20 with gusts to 30.

Snowpack: Storm layer well formed and consolidated. Observed 8" to 10" wind slab layer on NW Facing slope above Narada Falls.

Avalanches: No natural or human-triggered avalanches were observed.

Dec. 30, 2015, 1 p.m. PST

Region: Olympics
Observation by Chris Holloway

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: We ventured into some steeper avalanche terrain of 30 plus degrees North facing. Snow was great. No visible signs of any activity. Snowpack seems very stable on the major crust that was formed a few weeks ago.

Route Description: Maggese pullout to Lost Bowl Chute.

Weather: 20 and sunny!!!

Snowpack: Great stability . No signs of whoomph or cracks.

Avalanches: None seen.

Dec. 30, 2015, noon PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by Tod Bloxham

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: MRNP Tatoosh; Lane Peak, Denman Peak, Plummer Peak

Route Description: Via Narada Falls, Lane-Denham Saddle, North Face of Lane Peak (Zipper), West Ridge of Denman, North Face of Plummer.

Weather: Sunny, high upper teens, low 20's, light winds.

Snowpack: Very consistent snowpack down to 1.2 meters (no layers evident except for 8-10cm of low density on surface). Wind slab was not found. Small loose dry releases were still occurring on steeper slopes. Solar aspects had lot's of small/med point releases. Top 8-10cm of low density on solar aspects was showing signs of warming. Strong surface hoar (20mm) on all aspects including in sun.

Avalanches: Small loose dry releases occurring on steeper slopes. Solar aspects had lot's of small/med point releases yesterday (12/29) and today (12/31). Set off two loose dry R1D1 while skiing north facing slopes at angles of 45-55 degrees.

Dec. 30, 2015, 9 a.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90
Observation by Nick Pope

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Upper Culver Springs Creek drainage

Route Description: Up King Creek Rd.

Weather: Winds calm. Temps around -9 C at 5000'. Morning clouds gave way to blue skies with few clouds. No precip or blowing snow.

Snowpack: @ 4590', Asp: NE, Slope: 30, HS:130, PenFoot: 40, PenSki: 20, T surf: -13, T 20: -7.5. Continuing to track 12/16 SH. Here it was @56cm, 9mm grains, losing their striations and looking like swiss cheese. On this layer had STH RP, CTH SP, and PST 70/100 (End)down 73cm on 20151216. Did not observe this layer react to ski tests.

Avalanches: None observed.

Dec. 30, 2015, 9 a.m. PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by Matthew Mioduszewski

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: Northwest slope, in lee of strong East Winds. 25 year old alder forest below. small area of open terrain below a scoured and open saddle/ridge area above.

Route Description: travel along coldwater ridge to explore.

Weather: clear, below freezing, strong east winds.

Snowpack: previous storm cycle powder in shaded/unaffected areas, wind deposition below ridges.

Avalanches: Wind slab avalanche right around 3500ft. Triggered by leader on skin track. 6-8in crown across ~30ft At 2pm witnessed a large point source slide start near the top of Minnie Peak across valley from us. South facing slope, started high below peak but then entrained more snow and grew to run full 3000ft to valley floor through main terrain gully. Video of that event available if needed.

Dec. 30, 2015, 1:51 a.m. PST

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? Yes

Dec. 30, 2015, 1:49 a.m. PST

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Dec. 29, 2015, 6:50 p.m. PST

Region: Stevens Pass
Observation by Matt Hartman

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Skyline Ridge

Route Description: Skied N. Facing shots at 52000' off ridge top 35 degrees, Moonlight Bowl 35 degree shot and Moonlight Bowl North 40 degrees.

Weather: Light Snow with Light Easterly Winds all day. Overcast all day with Moderate Visibility.

Snowpack: HN: 230 cm at 5200'. Pole and probe tests show a rightside up snow pack with unreactive windslabs in steep loaded terrain.

Avalanches: None. No signs instability.

Dec. 29, 2015, 5:45 p.m. PST

Region: Stevens Pass
Observation by John & Olivia Race

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Rock Mountain (US Highway 2, East of Stevens Pass)

Route Description: Up and down standard route roughly following summer trail. 2730' to 6400'.

Weather: Overcast, well below freezing, and nearly wind free all day.

Snowpack: Good powder skiing from top to bottom. A thin curst has formed on the surface at 4700' and above. Noticed similar zipper crust at same elevations on Jim Hill yesterday. Our best guess was freezing fog. Still skis well.

Avalanches: No signs of instability. We skied a variety of features, including steep rolls, convexities, etc.

Dec. 29, 2015, 1 p.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90
Observation by DENIS DUBOIS

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Blewett Pass area

Route Description: Blewett Pass area

Weather: Mountain fog all day, early snowfall then dry, around 17F all day.

Snowpack: From skin track observations and skiing, snowpack is very stable but not deep. At our profile location on a N aspect at 5600', snow is loose and dry at the surface and progressively more cohesive as you dig down to the thick rain crust layer at 1m. We found some sensitivity (CT15) about 25cm down, poor quality shear and no evident crust or facets there; no reaction on the rain crust 100 cm down. Sugar snow between the rain crust layer and the rocks ~5cm below. Elsewhere we saw surface hoar at about 5500', found firm wind crusts just ~10 cm down in exposed areas, and hit a few rocks. Total HS 120cm at 5600'.

Dec. 29, 2015, 1 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River

Elevation: Above treeline

Aspect: N

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: top of pick handle peak in crystal bc an inexperienced ski tourer almost triggered massive cornice. he was trying to get a better look and set of a massive fracture but it did not slide. Lots of hairy cornices out there still.

Dec. 28, 2015, 6 p.m. PST

Region: Stevens Pass
Observation by John & Olivia Race

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Jim Hill Tour - East of Stevens Pass (US Highway 2)

Route Description: Stevens Nordic Center to Lanham Lake to 5600' saddle to Jim Hill Summit with exit via Henry Creek then up to saddle at 5650', then up Jim Hill with exit via Henry Creek. Being guides we had know how bad it was....it was bad....but clear cuts East of Henry Creek are skiing well.

Weather: 6425' Snowing lightly (S-1), Calm winds, Air Temp of -8C, in and out of soup all day, pretty flat light above 5500'.

Snowpack: 6425' HS 225cm, 10 cm from past 24 hours. Found 12-9 crust down 120 cm. Open slopes noticeably stiffer from windslab. Foot pen 40 cm, more in trees and sheltered areas. Significant findings in CT's were Moderate results down 25 cm in storm snow and hard results down 45 on decomposing precip particles. Remained conservative, but felt very good about stability. No surface hoar observed.

Avalanches: No whumpfing, no shooting cracks, no naturals, no evidence of any avalanches with exception of 1 deep (4') D2-3 (ran 400', 125' wide) on East slopes below cliff band at 5400 that appeared to have happened many days ago as a result of either cornice or loose snow slides.

Dec. 28, 2015, 11:01 a.m. PST

Region: Olympics

Elevation: Below treeline

Aspect: E

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: 100 cm snow depth. Elevation 800 m.

Dec. 27, 2015, 6:45 p.m. PST

Region: Snoqualmie Pass
Observation by Brian Carpenter

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Commonwealth Basin

Route Description: Took the PCT from TH towards Commonwealth Basin. Breaking trail in 2-4' of unconsolidated snow, so at second switchback traversed across and down hillside to meet up with old trail, which was well-trodden. Old trail back to TH.

Weather: Overcast. Snow started about 11am. Between at least 11am and 1pm it was snowing heavily.

Snowpack: Some signs of settlement around trees. Still lots of powdery unconsolidated snow. At lunch break near the creek (roughly North aspect, 3500') did a quick pit in the upper 4' of snow. Only found storm snow, same hardness all the way down. CTM test resulted in the block giving way after several elbow taps. not a clean break or fracture. No crusts or hard layers found, but if I had more time to dig farther down might have found something.

Dec. 27, 2015, 2 p.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90
Observation by Matthew Tangeman

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Route Description: Merritt Lake summer trail up to 6000ft high point between Merritt and Lost Lakes, followed ridge west of Merritt Lake SE to 5500 and got some decent turns fall line down the highway. Low snow below 3700 ft and lots of unpleasant brush.

Snowpack: Mostly right side up. Fresh snow from overnight was causing some very small loose dry slides. In some areas, there seemed to be a hoar frost layer underneath the 5-10cm of fresh stuff.

Avalanches: Wind loading on open SSE facing slopes around 4500 feet, west of Merritt Lake summer trail. Triggered small but still significant slide, went to more sheltered area after.

Dec. 27, 2015, 1 p.m. PST

Region: Snoqualmie Pass
Observation by frank sosa

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: NNW facing slope above twin lakes/ cold creek 4800'

Route Description: Toured from Hyak to twin lakes, then onto cold creek trail and ascended steep trees a few hundred feet east of actual summer trail, the trail that leads to a saddle (pct junction/mirror lake junction). My partner and I crested the ridge to the NE of the junction, bypassing the saddle. At the ridge we experienced sustained 20mph winds from the SW, loading the slopes 100+' down from the ridge. We traveled only 40' across the ridge before i triggered a small isolated pocket of wind slab, about 10'' deep 20'x20'. larger slabs surely lurked nearby. Our intent was to travel this ridge in its NE direction to a prominent terrain feature to ski straight down to twin lake. The steep trees on the way up were very stable so we reversed the route back down to cold creek. Mucho fun. More loading throughout the day surely built these near-ridge slabs up even more.

Weather: Snowing heavy. Sustained 20mph winds from SW.

Avalanches: Triggered islolated pocket of wind slab, 10'' deep, 20'x20', NNW aspect, 12 feet below ridge crest. Very sensitive, triggered easily. Trees and benchy terrain stopped it from running from far. Count on these slabs being much larger today...

Dec. 27, 2015, noon PST

Region: West Slopes North - Canadian Border to Skagit River
Observation by Dustin Byrne

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: Mt Herman East face

Weather: light to moderate snow, moderate winds

Snowpack: unconsolidated snow in trees and sheltered areas, where winds had effected snow ranged from 1F-4F over F

Avalanches: ski cuts on steep terrain 35+ produced soft slabs in the upper 6-8inches of the snow pack which propagated throughout the steep terrain. also observed another party starting similar type slides in the same terrain. R2-D1.5 was the largest observed slide but the terrain was very small and my feeling is that in larger terrain the slides would have propagated further

Dec. 27, 2015, 10:20 a.m. PST

Region: West Slopes North - Canadian Border to Skagit River

Elevation: Near treeline

Aspect: S

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? Yes

Comments: 1x R2/D2 slide below Herman Saddle on a south aspect. Storm/wind slab approx. 5 inches deep crown that propagated far up slope. Ran 100 foot down slope to bench and stopped. one skier caught and partially buried.

Dec. 27, 2015, 10:15 a.m. PST

Region: West Slopes North - Canadian Border to Skagit River
Observation by Nick Belcaster

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? Yes

Area Description: 48.85789,-121.70248. Approx. 4900'. S aspect slope between Bagley lakes and Herman Saddle.

Route Description: Traversing south slope below ridge into Mazama Bowl.

Weather: Moderate to high winds, snow coming down. White out conditions.

Snowpack: Unconsolidated storm slab w/ furthering wind affected sections throughout the day.

Avalanches: R2/D2 slide that ran approx. 30 meters and came to rest on bench. 35 degree convex rollover. 10-12 cm crown propagated upslope from 2nd skier and came down on 1st. Carried 1st skier into partial burial.

Dec. 26, 2015, 1 p.m. PST

Region: Stevens Pass

Elevation: Near treeline

Aspect: N

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: Christmas Bowl at Stevens Pass. Skied numerous north aspects from 4000 to 5300 feet and noted no instabilities other than surface sluff. Great skiing!

Dec. 26, 2015, 1 p.m. PST

Region: Snoqualmie Pass

Elevation: Near treeline

Aspect: NW

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Dec. 26, 2015, 12:32 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River

Elevation: Near treeline

Aspect: NE

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Comments: AS-SS-R1-D1-NS Small soft slab released on a ski cut. Run name is G-String in CM back country (Crystal Lakes)

Dec. 26, 2015, noon PST

Region: West Slopes North - Canadian Border to Skagit River
Observation by John Minier

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: Exposed convexity near treeline. North aspect. 35 - 40 degrees.

Route Description: Ptarmigan Ridge - Baker Backcountry

Weather: Mostly cloudy with light snow. Moderate winds out of the south near ridge lines. Wind is transporting lots of light surface snow onto lee aspects. Cold and cloudy conditions kept southerly aspects soft. Great for skiing and riding, but also lots of light snow available for transport.

Snowpack: Wind effected surface snow above tree line. Still lots of soft, unconsolidated snow in protected areas. New snow from this last week doesn't seem to be settling much with the cold temps. Trail-breaking not getting any easier.

Avalanches: Eased into a convexity in an area known as Kootenay Trees just north of Ptarmigan Ridge. Triggered a D1.5 windslab that ranged from 8 inches to almost 2 feet in parts of the crown. Wind quickly began rebuilding the slab. Also observed a skier triggered D2 storm slab on the north face of Table Mountain skier's left of a feature known as the prow. Avalanche occurred in steep terrain (~45 degrees), and obviously happened today.

Dec. 26, 2015, 9 a.m. PST

Region: Snoqualmie Pass
Observation by Erik Olson

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Above waterfall on PCT at ~4200'

Route Description: Normal way up/down Commonwealth. Multiple runs in Kendall trees and Kendall bowl

Weather: Partly cloudy, low winds. Temps in upper 20s

Snowpack: 270cm deep. F to 4F for 150cm of recent storm snow. No observable change in snow grain size/type. ECT produced a crack at 20cm on 16 and another one at 35cm at 20. No propagation. Snowpack felt very right side up with the lower layers starting to consolidate under the weight of the new snow. Others in group stomped convexities with no reaction. Felt pretty stable...

Avalanches: While skiing some steeper sections ~45 degrees, the top 20cm sloughed off as a loose dry and ran until the angles slackened. Maybe D1 class

Dec. 24, 2015, 5:08 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River

Elevation: Near treeline

Aspect: E

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Dec. 24, 2015, 11 a.m. PST

Region: West Slopes North - Canadian Border to Skagit River
Observation by John Minier

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Baker Backcountry - Herman Trees (AKA Enchanted Forest)

Route Description: SW Aspect. ~4600 ft. Steep, convex micro-features throughout terrain.

Weather: On and off snow showers. Snow was heavy at times.

Snowpack: Lots of unconsolidated fresh snow. Ski penetration was ~40 - 50 cm. Moderate hand shears ~50 cm down. Easy tilt test failure about 6" down. Bottomless Skiing / Face Shots!

Avalanches: Shared Herman Trees with some other Baker BC regulars who did us the favor of testing a number of slopes. Several "ski test" results yielded 6" storm slabs that propagated respectable distances. Debris flows would trigger the next convexity/slope below. Interesting domino effect.

Dec. 22, 2015, 2 p.m. PST

Region: East Slopes North - Canadian Border to Lake Chelan
Observation by Adrienne Schaefer

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? Yes

Area Description: Above treeline, N aspect, 5840'

Route Description: Crossed the west fork of the Methow River and ascended to a high point NE of Driveway Butte.

Weather: Mostly sunny, consistent west wind 5-10 mph

Snowpack: Storm snow, wind slab

Avalanches: Skier triggered wind slab on N facing slope at 5840'. 2 skiers caught, carried ~50 ft. Crown ranged from 6" at trigger point to ~2ft. Unable to determine how far debris ran.

Dec. 22, 2015, 1 p.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90
Observation by Nick Pope

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Stemilt Basin, northwest side of basin.

Weather: Sky started clear, clouds pushed in by early afternoon. Winds at ridge top were west, moderate gusting to strong. Light to moderate blosno. Air temps were around -7 C through the day.

Snowpack: Went in to check state of the surface hoar we found here 12/15. Found it buried in the snowpack in several locations from 5720' to 6500'. Did not travel or check above or below this band. Locations with SH were all wind sheltered, with aspects of N through ESE. It was typically ~45cm down, size was 15-20mm. On a small 33 deg slope at 5700' I had this layer whumph and collapse with a 10m shooting crack. Testing it later at 6500' I had CTM RP x 2 and ECTN25. Otherwise, HS: 135cm but varied a lot with wind effects. 12/9 crust is @60cm, 12/16 SH @90cm from ground. Surface had some 2-3mm SH knocked down by wind.

Dec. 21, 2015, 7:44 p.m. PST

Region: East Slopes South - South of I-90 to Columbia River

Elevation: Below treeline

Aspect: S

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: what about bend, eugene, Santaiam pass and willamette pass?

Dec. 20, 2015, 6:50 p.m. PST

Region: Stevens Pass
Observation by Matt Hartman

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Skyline Ridge. East facing terrain 30-35 degrees.

Route Description: Skied up Skyline road to peak 5447 then descended an E facing ridge to the PCT.

Weather: Overcast in AM, Broken at noon, Overcast PM. Light E winds shifted to Mod SW. S-1 until 5pm and moved to S1.

Snowpack: Dug a pit on NE facing aspect on 25 degree slope. 160 HS. Decomposing fragments and small rounds to 105 cm. Weak on top of strong for all snow after rain event from a week and a half ago. Polycrystals and crusts below that are well consolidated. CTM BRK Q2 at 134cm. ECTN 24 at 120cm.

Avalanches: none observed.

Dec. 20, 2015, 5:15 p.m. PST

Region: Snoqualmie Pass

Elevation: Near treeline

Aspect: NE

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: Test comment.

Dec. 20, 2015, 4 p.m. PST

Region: Snoqualmie Pass
Observation by Kameron Harris

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Route Description: Skied up Commonwealth to Kendall lakes. Hugh point near 5400' above last lake

Snowpack: HS 190 cm, 20-30 cm new snow on older powder

Avalanches: Noticed many naturals on steep paths had ran in the snow from this morning. Triggered one of the Kendall chutes as we reached the ridge. Skied back the way we came and ski cut a convex feature that slid, size 1, ~15 m across. Only the new snow moved, old snow is settled and was stable.

Dec. 20, 2015, noon PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by Tod Bloxham

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: MRNP: Paradise, Edith Creek Paradise Valley

Route Description: Up Edith Creek, down Edith Rib into Paradise Valley

Weather: Obscured/OVC, Precip: NO / S2, Moderate Winds from W.

Snowpack: HN 12cm Storm Slab (STM RP). Multiple previous storm slabs down to 33cm rain crust (CTH RP / CTN). Any sort of warming and precip will stress snowpack. Storm slab was not as reactive to tests as expected, Wind Slab problem seemed more likely due to moderate winds and 12cm of new.

Avalanches: Golden Gate. Was only able to see debris, but was not able to see type/size/path due to fog. Report from ranger that it was new on Saturday morning.

Dec. 20, 2015, 11:50 a.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? Yes

Area Description: Mission Peak NE facing slope 30-35 degrees

Route Description: Exited Mission Ridge Ski Area from top heading west towards Mission Peak

Weather: Fog, light snow, minimal wind, temperature uncertain.

Snowpack: New unconsolidated snow from recent storm cycles.

Avalanches: Ski cut at top of slope without reactive result. Skier made way to the middle of the slope and triggered a soft slab. Crown was approximately 20 cm at highest point and ran 50 meters wide. Skier was carried 10-12 meters downslope.

Dec. 20, 2015, 11:09 a.m. PST

Region: Stevens Pass

Elevation: Below treeline

Aspect: N

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: Yodelin - elev 4,920 Rain crust at 100 cm, total depth 165 cm. About 1 foot of very light new snow, right side up snowpack.

Dec. 20, 2015, 11 a.m. PST

Region: West Slopes South - South of I-90 to Columbia River

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Chocolate Falls, MSH

Route Description: Worm Flows

Weather: Moderate to Heavy Snowfall (1"/hr), upper 20's, obscured

Snowpack: New snow; CT #11 at 23 cm with Q3 shear. Hardness = F down to 25 cm, then 4F to 30 cm, then F to 60 cm. Melt forms 30 cm and down into pack. Pit on southerly aspect.

Avalanches: No observation

Dec. 20, 2015, 11 a.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90
Observation by Matt Kurjanowicz

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Route Description: Skinned up the road to the top of Amabalis and skied down.

Weather: Cloudy 8/8, intermittent precip, breezy at points, 26-28 degrees F.

Snowpack: 65+ cm of loose, unconsolidated snow on top of an obvious crust layer at 76cm. Deep snow on the road and even deeper turning off the road to reach the summit.

Avalanches: Later in the day, noticed some small (R1 D2) loose slab slides triggered by tree snowfall on 45+ degree slopes above the road.

Dec. 20, 2015, 8:36 a.m. PST

Region: Snoqualmie Pass

Elevation: Near treeline

Aspect: SW

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Dec. 19, 2015, 8:47 p.m. PST

Region: West Slopes North - Canadian Border to Skagit River

Elevation: Above treeline

Aspect: E

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: Isolated column resulted in a failure at ct28 40cm below surface. Wind loading and transport was highly present, but no issues while skiing down to the hairpin

Dec. 19, 2015, 8 p.m. PST

Region: Snoqualmie Pass
Observation by Brian Carpenter

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: PCT south from Snoqualmie Pass, towards Lodge Lake

Weather: Snow until about 8am, then clearing with partial sun. No wind at pass level.

Snowpack: 2-4' of unconsolidated powder, more in some places. We had to turn around well short of the destination (Lodge Lake) on account of extremely slow wading through the snow. Several times when I was in the lead it was almost up to my shoulders. Crazy awesome amount of powder.

Avalanches: Alpental was setting off explosive charges in the morning as we started out, and we heard several resulting avalanches. Also saw one small loose dry on west side of Guye Peak.

Dec. 19, 2015, 6 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by Ian Nicholson

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Alta Vista East Face above Edith Creek Valley.

Route Description: We toured from Paradise up to Alta Vista and took a run down into Edith Creek Valley where we spent most of our day.

Weather: We observed decreasing clouds throughout the day that started as obscured and decreased to Broken. We observed light winds that appeared to shift slightly from Southwest to South.

Snowpack: We observed light to moderate amounts of previous wind transport on exposed east slopes in the Near Tree Line zone. The snow pack features 8cm of new snow (F)on top of a 5cm thick Rain crust (K-). Below this rain crust the snow pack consists of generally progressively more resistant layers comprised mostly of rounds and decomposing fragments with the exception of two crusts (both P) 25cm and 31cm down. Below the second crust is rounds trending from 1F to P- on top of the Dec 8 Rain crust which sits 121cm down is beginning to break down. We preformed several snow pit tests CTM @ 15cm x3 Q2 (PC) on the bottom side of the IFcr, 2x CTH Q3 @65cm on an storm snow interface, and ECTN14.

Avalanches: We observed D2 and D1.5 Soft Slabs that were likely triggered Naturally late Thursday or early Friday. The larger of the two was near the head of Mazama Ridge just West of Slusikin Falls. The smaller Soft Slab was observed near Alta Vista and was likely D1.5. We observed several smaller older D1 avalanches along the eastern side of Alta Visa.

Dec. 19, 2015, 2 p.m. PST

Region: Snoqualmie Pass
Observation by Michael Stolp-Smith

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: West slope, 32 degrees, Snoqualmie East

Snowpack: 150cm snowpack depth at about 3700 ft. Snow is largely medium to low density above a solid, thick rain crust near the base, which is on top of what seems to be rounded out depth hoar. At 70 cm there appeared to be a poor bond on a thin layer of faceted crystals between older snow and more recent storm snow from this past week. Did a quick column compression test. Storm snow from the week produced poor shear quality in upper layers. Major collapses in the test: 30cm deep Q2 / 3 collapse in the new snow after 15 hits (10 hand, 5 elbow), and a Q1 shear at a depth of 70cm after 10 more hits (5 more elbow, 5 full arm).

Avalanches: None visible, no pockets pulled, even on small, steeper pitches

Dec. 19, 2015, 1:30 p.m. PST

Region: West Slopes North - Canadian Border to Skagit River

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: The large valley directly east of My Baker Ski Area's Chairlift 8, on the northwest slopes of Mt Shuksan. This valley is directly adjacent to in-bounds ski area and should be a warning to those who enter the backcountry from the ski area.

Route Description: I saw many backcountry skiiers/travelers on the high ridges and steep slopes above the valley where the avalanche occurred. All of them appeared to be out of harm's way from this particular avalanche, and it wasn't clear whether it was human-triggered from my vantagepoint.

Weather: Cloudy with light to moderate snowshowers throughout the day.

Snowpack: Lots of fresh powder from the recent storms.

Avalanches: I witnessed a large avalanche while travelling up Baker's C-8 Chair yesterday. It appeared to have started at a high elevation at the head of the valley, and progressed all the way down the valley's length. There didn't appear to be anyone in the path of this avalanche, but I spotted several backcountry travelers in the area on the far side of the valley's higher slopes.

Dec. 19, 2015, 1 p.m. PST

Region: Snoqualmie Pass
Observation by Margaret Wheeler

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Alpental Valley above Source Lake - Draft Dodger Ridge

Route Description: Skinned up the climber's left side of the Alpental Valley to the base of Draft Dodger ridge at 4500 feet (via big trees)

Weather: Overcast skies, calm winds, air temps -3 C

Snowpack: HS between 200 - 26 cm at 4500

Avalanches: AIARE 2 class observed multiple (4-6) natural avalanches, estimated from 12/18 and early 12/19, storm slabs sizes 1-2 on N, NE, E aspects in steep terrain. We also observed two larger and older (from late 12/17 or early 12/18) crowns and debris piles on the easterly slopes below the tooth, estimated size 2 - 3

Dec. 19, 2015, 11:15 a.m. PST

Region: Mt Hood
Observation by Heiko Stopsack

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Ridge line that lays between Newton and Clark Creek drainages. Just North off the HRM lot.

Route Description: Entered from HRM lot gained ridge line via common route. Traveled to approx 6500 ft till treeline.

Weather: Clear and Sunny. Air temp at car was 30. At treeline winds gusty with snow transport N, NE direction.

Snowpack: Left my study kit at home. Taken from voice notes. No temps sorry. Total snow depth 160cm. CT9Q3 at 130cm. Rest of pit revealed a combination layers of F and 4F. Rounds and decomp. snow. Approx 40' slope. Elevation 5570ft. The open ridge line appeared to present today's forecasted problems.

Avalanches: Interesting to see a multiple day old slide debri within the trees at the first hill that the common track encounters when leaving the flats from Heather Canyon. Steep enough to slide. 40' ish. Diminishing tree cover and anchors in that area. Poss crown the last 20 ft of the hill. Running to the bottom. 50 to 75ft wide. 100ft run. 12" slab approx. Old ski tracks in the area. Unk if accidental or natural trigger ? What surprised me was the very noticeable multiple slab remnants. It seemed that it had propagated around anchors. The rain had affected the snow and it was something I had to stare at for a moment to appreciate what was looking at. Today was day 13 of the season touring and been close to the area all last week. Reinforced to me that things get spatial. I had always felt that area was reasonably wind protected. Not the findings I found one ridge line away North from this spot last week. Interested know if anybody saw it go or had triggered it with a ski cut ?

Dec. 19, 2015, 9:30 a.m. PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by Ben Brelje

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? Yes

Area Description: Brand X trees area of Northway (in bounds at Crystal). Northway was open for the day.

Route Description: Generally followed the run marked on maps as Brand X, below the Morning Glory bowl accessed via Northway Notch

Snowpack: Variable depth (~15-20cm) soft storm snow over rain crust

Avalanches: Kicked off a small ~50ft wide soft storm slab on a convex rollover descending on the first lap of the day that only ran a few dozen feet. I cut high and didn't get caught up in it. Another skier entered the very similar adjacent slope and got caught up in a second slide - wasn't carried far, but it knocked him down and covered him up to his waist. I didn't go and measure the crown but it looked to be about 20cm deep and the bed surface was the Thursday rain crust.

Dec. 18, 2015, 12:30 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by Peter Ellis

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Mount Rainier National Park, Paradise area. East Face of Alta Vista, approx. 5750 feet. 30 degree ESE facing slope.

Route Description: N/A, very close to parking lot, accessed by avoiding nearly all avalanche terrain.

Weather: Sky: OVC, S2 Temp: air: -5C, Tsurf: -5C, T20:-1 Wind: Moderate winds, from the SW at 10-15 with strong gusts, light blowing snow. Snow level: 3,000 feet

Snowpack: Surface: precip particles (1mm) New Snow: 22cm Height Snow: 250+ cm Boot Pen of 60cm New rain crust observed at approximately 22 cm, providing a reactive sliding surface for the storm snow. Shovel tilt test yielded easy results, as well as many small sluffs under foot (skis) on slightly steeper slopes on this surface. Also substantial wind loading on east aspects, with scouring on ridge tops and some west aspects. This observation confirmed the suspected avalanche problems listed in the daily bulletin this morning, potential for storm and wind slabs. I was not, however, expecting to find a quite noticeable rain crust under the new snow.

Avalanches: None observed. Many wind pillows, and hollow sounding snow.

Dec. 17, 2015, noon PST

Region: Snoqualmie Pass
Observation by Dave Leffmann

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? Yes

Area Description: East facing appx 4000' in area with cliff bands

Route Description: Skiers R of Big Trees slightly below pour off

Weather: Snowing, light swirling wind

Snowpack: 12 inches of light unconsolodated snow on top pf consolodated base with areas of loading.

Avalanches: large unconsolodated slab below cliff band triggered from lower on the slope

Dec. 16, 2015, 6 p.m. PST

Region: West Slopes North - Canadian Border to Skagit River
Observation by Tino Villanueva

Did you see any avalanches? No
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: Baker BC

Route Description: Heather Meadows to Mazama Bowl and East Slopes of Herman.

Weather: Sky - High Few all day Wind - L, N Temps stayed cold all day -6.5 deg C at 5000 ft, 1200 hrs -7.8 deg C at 4200 ft, 1700 hrs

Snowpack: Overall stable, with few pockets of wind slab. Did not see anything move, but also did not have time to poke in to see too closely in suspect areas. 6000 ft, E asp, 27 deg ECTN 21 down 15-20 cm mid-storm layers previous mfc was down 55cm Of more interest for this next cycle was the variety of potential weak layers that were on the surface. 3mm graupel was observed rolling down slope (widespread). In addition larger SH and PP grains (~3mm) were observed on surface.

Avalanches: Very small D1 avalanche was triggered in W aspect at ridge line from small cornice.

Dec. 15, 2015, 9:16 p.m. PST

Region: West Slopes North - Canadian Border to Skagit River

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: A surface hoar layer formed over a wide area of the my baker back country on Monday night. It was buried by new snow today and this evening.

Dec. 15, 2015, 5:31 p.m. PST

Region: Mt Hood

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Dec. 15, 2015, 4:01 p.m. PST

Region: West Slopes North - Canadian Border to Skagit River

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: Was in the baker back country today. A surface hoar layer formed overnight and was present on all open slopes. We observed this layer being buried throughout the day. We observed no instability and found no unstable wind slab. Storm slabs also appear to have stabilized.

Dec. 15, 2015, 3:39 p.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90
Observation by Matt Hartman

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Stemilt Basin

Route Description: We skied N facing shots into the basin. Approached from just north of ski area.

Weather: Sunny, mostly clear. Low winds. Below freezing.

Snowpack: Thin cover. There is a rain crust from one week ago that has wet rounds below. Not as cohesive below the crust as on Stevens. Wind scouring was evident on W facing slopes with cross loading transport along ridges. Surface hoar from the last 24-48 hours was formed and consistent on all open areas. Solar aspects were softening as the day went on and will likely develop a light crust overnight. See photo below for surface hoar.

Avalanches: We saw on old crown on a N facing slope at 5500. It looks like it ran before the last storm cycle in a 35+ degree meadow. It was likely a D2, but hard to tell with new snow above. We also saw a small wind slab that was skier triggered at a similar elevation.

Dec. 15, 2015, 2 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by Steve Hyde

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Bullion Basin near Crystal Mountain Ski Area

Route Description: Ascended west facing slopes on skis to Bullion Basin. Shallow wind and rain effected snow under layer of dense powder snow. No signs of recent avalanche activity. We skied the same aspect on the way out. Conditions were good, but thin in places. Clearly a lot of the recent snow accumulation had melted leaving behind a consolidated base layer. For this reason we did not dig a pit so formal snow profile to report this time.

Weather: temperatures hovering around freezing, light wind, light precip, good visibility, but heavy clouds blocking out the rays of the sun most of the afternoon.

Snowpack: No profile to report.

Avalanches: N/A

Dec. 15, 2015, noon PST

Region: Stevens Pass
Observation by Denis Du Bois

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Skyline ridge and lake north of Stevens Pass

Route Description: Lot to ridge saddle, to lake, return by slopes and road.

Weather: Overcast, calm, some precip started around 1300 as not exactly snow, maybe freezing rain or pellets.

Snowpack: New snow is right side up and very well bonded to the rain crust that is now 65 cm down at our profile on south aspect just below the lake, elev 5000. HS 150cm. No evidence of wind slab or storm slab anywhere on our route. Some settling cracks around trees. We did not descend into Moonlight Basin. (I had more data but my field book fell out of a pocket. Homemade cookies for you if you find it.) Lovely skiing with a few sun breaks!

Dec. 14, 2015, 1:30 p.m. PST

Region: Stevens Pass
Observation by Mike Leeuw

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: NNE facing area behind skyline ridge

Weather: Light graupel around 13:50

Avalanches: Soft slab on 40º bed surface. Broke 25cm down.

Dec. 14, 2015, 12:30 p.m. PST

Region: Mt Hood
Observation by Joe Poulton

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Little Zig Zag Canyon, Mount Hood Elevation ~5880 SE slope

Route Description: Near PCT

Weather: Partially sunny with west wind

Snowpack: Two 5 inches layers had a Q2 with 1 tap of wrist. No effect on the remailing layers during the test.

Dec. 14, 2015, 12:29 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River

Elevation: Near treeline

Aspect: W

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: Measured HS in several spots on the W and SW slopes above Bullion Basin. Avg 105cm with low of 60 and high of 125. 45cm of rite-side-up new snow on the rain crust from last week. Ski tests grilled no results and any quality is excellent. Ski pen 20cm. -Seth Waterfall

Dec. 13, 2015, 8:50 p.m. PST

Region: Stevens Pass
Observation by Matthew Hartman

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Skyline Ridge, Stevens Pass.

Route Description: Skinned up Skyline to N facing bowls.

Weather: Below freezing temps all day. Cloudy with light snow am, clearing at 1200, cloudy and light snow in pm.

Snowpack: We had CTE (1tap) RP on a storm snow interface at 140cm (HS 160cm). Also ECTN 4 on the same layer. The area was N facing and wind loaded. 105 cm and below is rounds and polycrystals that is well bonded from last weeks rain event.

Avalanches: none.

Dec. 13, 2015, 5:16 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River

Elevation: Near treeline

Aspect: S

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Comments: In bounds slide above henskin lake. convex slope, party ruled out skiing due to very reactive snow pack. Skier traversed across top to ski into safer chute, remotely triggered slide at midpoint of pitch. 4-6 inch crown, storm slab. Skier saw slide and cut out of slides path, no incident or burial but if skier got caught would have likely at least partially buried due to terrain trap (creek) at bottom. South facing terrain in Avalanche basin was bottomless blower with excellent stability. Some of the best turns in years.

Dec. 13, 2015, 2:49 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River

Elevation: Near treeline

Aspect: S

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Comments: small slab went at ski tips. slid above crust on what appears to be a host frost layer

Dec. 13, 2015, 2 p.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90
Observation by Ben Brelje

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Lower N/NE slopes of Diamond Head

Route Description: We worked our way up the XC trails to the NE flanks of Diamond Head before turning around due to reports of windscoured rocky conditions on the north facing slope between DH and Windy Knob

Weather: Broken clouds, light winds, temps slightly below freezing

Snowpack: Ankle to thigh deep variable light powder over near-surface crust. Deeper snow in wind-sheltered north facing gladed slopes, much thinner on NE and E aspects. No slabby tendencies in the storm layer. No wumphing or collapsing observed.

Avalanches: No signs of instability observed though we stayed in almost exclusively low angle terrain.

Dec. 13, 2015, 12:26 p.m. PST

Region: Stevens Pass

Elevation: Near treeline

Aspect: NW

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Dec. 13, 2015, 10:30 a.m. PST

Region: Mt Hood
Observation by Patrick Fink

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Various moraines west of the timberline boundary between 5600-6600'. East of the little zigzag moraine.

Route Description: West from Timberline, headed towards little zig zag bowl. Reaching the big moraine en route we called off that plan b/c the far side was not something I wanted to skin up. Continued to ski on low angle terrain to the East of this moraine for the remainder of the day.

Weather: 26F at 10:00, relatively constant throughout. Obscured sky with occasional sucker hole. Moderate west winds with some precipitation. Accumulation of about 1" during the day. Significant wind transport ongoing, with cornice building observed.

Snowpack: General structure from top to bottom: fist storm snow ~4" atop 4F denser slab ~10" thick, atop lower density snow over a base of rounds. Light ...heavy ...light ...ground. Differences are less pronounced on West facing terrain, but easterly terrain is largely heavy wind slab atop less-dense snow. Felt like a bad enough recipe that it turned us around from our objective. Small wind slabs within the storm snow are manageable, but this seemed less predictable and likely to go stubbornly but bigger. Red flags: recent loading/storm snow, active wind loading onto E'ly aspects, natural avalanches, poor structure, and shooting cracks. I usually don't find high danger when it's forecast for the Mt Hood area, but today I agree. Expect improvement for tomorrow with settling of storm snow, but the E'ly aspects will remain red light for me until things settle significantly.

Avalanches: Observed one small natural on an E facing slope around 6000'. Wind slab ~4" deep, 25-30" wide running down moraine wall about 20'. Appeared to be cornice triggered.

Dec. 12, 2015, 10:24 p.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90

Elevation: Near treeline

Aspect: E

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: Whumphing and shooting cracks near treeline at Lake Clara by Mission Ridge. Recent snows (10-15cm) all pretty unconsolidated and unstable with prevalent wind crust.

Dec. 12, 2015, 9:01 p.m. PST

Region: West Slopes North - Canadian Border to Skagit River

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Dec. 12, 2015, 7:44 p.m. PST

Region: West Slopes North - Canadian Border to Skagit River

Elevation: Above treeline

Aspect: N

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Dec. 12, 2015, 3:45 p.m. PST

Region: Snoqualmie Pass

Elevation: Near treeline

Aspect: NE

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Comments: set off small storm slab avalanches on steep convex rollovers and test slopes around 8" deep. very small an d short running distance

Dec. 12, 2015, 1 p.m. PST

Region: Mt Hood

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Ridge between Newton Canyon and Clark Creek

Weather: Snowing hard with slight warming

Snowpack: Location: Small clearing in trees just below the ridge, Elevation: 5,700 ft, NE facing. Approximately 30 inches new powder atop rain crust from earlier in the week. Hand shear test fairly stable with clean shear at about 15 inches.

Dec. 12, 2015, noon PST

Region: West Slopes North - Canadian Border to Skagit River

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: bagley basin to herman saddle- E- SE aspects

Route Description: herman saddle traditional approach

Weather: snowing heavily- steady S winds down bagley canyon- switching to gusting N winds in upper bagley basin and at herman saddle

Snowpack: crust on E facing slopes, wind scoured N slopes with dense wind blown on S and SE, gullies loaded. Looking over herman saddle, heavily loaded to chain lakes area

Avalanches: 4-6" wind slabs breaking on S and SE rollovers

Dec. 12, 2015, 10:30 a.m. PST

Region: West Slopes North - Canadian Border to Skagit River

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: Herman Saddle approach; 5,000 ft.

Weather: Wind; moderate snow

Snowpack: Odd crust formed over Thursday's new from maybe wind.

Avalanches: Small 4-6" crown, storm slab on roll over facing S. Was early in the day, so add another 12" and these areas might be of more concern.

Dec. 12, 2015, 10:17 a.m. PST

Region: Snoqualmie Pass

Elevation: Below treeline

Aspect: N

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Dec. 12, 2015, 7:19 a.m. PST

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Dec. 9, 2015, 4:30 p.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90
Observation by Jamie Tackman

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Mission peak/Clara lake Basin

Route Description: Clara lake trail

Weather: Overcast, snow showers, temp 30 deg F estimated

Snowpack: Mostly on supportive crust from 4500 to 6000 variable new snow 4 cm to 8 cm. A pit at 6100 revealed crust at 6cm, last rain/warming, December crust ~ 55cm bed surface (ground) 65cm. ECT 24@55cm . X2 . The snow from Sat Sun was saturated through to the Dec crus. Contact with ground showed some transformation. The reader board at Mission Ridge was calling conditions in the resort Extreme. No Avalanche activity was observed on any slopes or aspects.

Dec. 7, 2015, 4:52 p.m. PST

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Dec. 6, 2015, 3 p.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90
Observation by Jamie Tackman

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Clara lake basin

Route Description: Clara lake trail to then upper Clara lake basin.

Weather: Partly cloudy, temp estimated 35deg F

Snowpack: 37 cm new on a sun/rain/melt freeze crust. Experienced settling on all aspects, with shooting cracks, a pit showed the new sitting on a crust with un supportive snow below. We skied new snow on well anchored slopes but avoided any snow that fell on continuous old snow. As I'm sure will be noted Mission had unstable slopes throughout the area.

Avalanches: Small natural realeases, observed, advised of larger realeases in the Mission Peak area.

Dec. 6, 2015, 2 p.m. PST

Region: Stevens Pass

Elevation: Below treeline

Aspect: SE

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: Completed a profile to ground looking for the persistent weak later. Did not find the PWL but we did 2 compression tests that cleanly failed (SPQ1) during column isolation 75cm down (CTV SPQ1) on 32 degree slope at 4400 ft on the backside of Stevens. Also observed lots of whoompfing. observed two recent storm slab debris piles on a steep W aspect and on an E aspect R2D1. The crowns looked to be about 15".

Dec. 6, 2015, 2 p.m. PST

Region: Stevens Pass
Observation by Loren McW

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Snowpack: We did two compression tests that failed on isolation of the column down 75cm (CTV SPQ1) - see included photo. There was no visible hoar or faceting at this interface, but it did transition from FInger to Pencil hard. HS: 115cm.

Avalanches: Several debris piles from fresh storm slab slides observed on both the front and back side of Stevens. From a distance the crowns looked to be the depth of the storm slab (around 40cm). Both were R2/D1s, around 20' wide and 30' long on steeper terrain.

Dec. 6, 2015, 1:30 p.m. PST

Region: West Slopes North - Canadian Border to Skagit River
Observation by Mike Stolp-Smith

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Slope bove Mt Baker Highway

Weather: Warm

Snowpack: 2-3ft of new snow on the old crust.

Avalanches: Large avalanche (controlled I think, should contact Mt Baker for more info here if interested), crown 1-2ft, about 800ft wide above the road or so all ripped out and slid across the road mid-afternoon.

Dec. 6, 2015, 1:10 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by Matthew Schonwald

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Crystal Southback FFF in Silver Basin below and just north of Threeway

Weather: Intermittent clouds with a persistent wind out of the Southeast

Snowpack: 27-30" down to the Thanksgiving crust

Avalanches: 2 D1R2 under Speed control debris less than 1' 1 D1.5-2 R3 out of 2 Easy Turns on Threeway Peak

Dec. 5, 2015, 7:59 p.m. PST

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Dec. 5, 2015, 3 p.m. PST

Region: Snoqualmie Pass
Observation by Erik Poulin

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Alpental Ski area

Route Description: Went up toward the base of the big cliff in the center of the ski area, not to familiar with the area

Weather: DUMPING all day, accumulated like 8 inches during the 6 hours or so we were there

Snowpack: Really nothing down low but once we got up higher the base of the cliff (guessing around 4500 feet) things got a lot more dicy. There was about 3 feet of snow maybe more. The top 8 inches to foot was the obvious storm slab. We dug a pit to the ground and the most notable layer was at the base of the snowpack. Seemed fairly rotten around the rocks probably from the cold spell over thanksgiving. A couple medium strength taps with the shovel got the entire 3 feet to go off of this funky base layer. This was a 3o ish degree slope and I believe it was generally east facing. Things felt pretty hollow once we got up to the higher elevations. I would have taken a picture but my camera died.

Avalanches: Didn't see or trigger any other than storm sluff.

Dec. 5, 2015, 2 p.m. PST

Region: Stevens Pass
Observation by Katie Strehler

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: N face of Cowboy, about 5200'.

Weather: Snowing all day, accumulated 6-7"

Snowpack: Rain crust about a foot down, soft and fluffy on top.

Avalanches: We set off a slab with about 1'x15' crown, skied over the icy bedsurface and into the trees.

Dec. 5, 2015, 1 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Small bowl near paradise creek.

Route Description: Playing around on the lower slopes of rainier, as the wind was brutal even in semi-exposed areas at 6000 ft.

Weather: Pow day--saw 6 inches of accumulation while we were there. Very damp snow, with significant wind. Temperature just below 32F.

Snowpack: Dug a pit near the point on the map-- SSW facing slope. Roughly 125 cm snow depth. First 25 cm new powder, easy fist penetration. From 100 to 80 cm, consolidated, rounded grains with four-finger penetration. 80 to 60 cm, highly consolidated layer: Pencil penetration was difficult. 60 to 57 cm, very light layer, with fist penetration possible if it was wide enough; semi-facetted grains. Below 57 cm, consolidated layer with rounded grains and finger penetration. Layer at 60 cm is possible failure point, but may have been wind-blown and thus localized.

Avalanches: None, even on steeper slopes--new snowfall is consolidating with the previous top layer rapidly.

Dec. 5, 2015, 12:30 p.m. PST

Region: West Slopes Central - Skagit River to South of I-90
Observation by Adam Pinsky

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Silver Basin - Crystal Mtn.

Route Description: Skiing in SE part of basin

Weather: Snowing hard. Wet. Wind from the south

Snowpack: At 6,000 ft - I dug a hasty column with my pole - down around 45 cm. The new snow was pretty unconsolidated but was becoming more so as the afternoon progressed. The column sheared of pretty cleanly at around 30 cm. The slab between the new snow and the shear held together well. I saw angular crystals that looked just like the picture you had posted in the Stevens Pass forecast. I thought this would be potentially useful information. Thanks for all your great work - it's really appreciated.

Dec. 4, 2015, 4:46 p.m. PST

Region: Stevens Pass

Elevation: Near treeline

Aspect: N

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: Buried surface hoar was found here and there at 30cm with strong, well bonded snow above and below. Air temp: -1*c Surface temp: -2*c -20cm temp: -3*c S1 with minimal winds at 11:00

Dec. 4, 2015, 2 p.m. PST

Region: West Slopes North - Canadian Border to Skagit River

Elevation: Near treeline

Aspect: S

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: Dug a pit at artist point. 30 cm new on top of a rain sun crust. Facets were noted between the crust and the new snow. Below crust was preserved loose snow particles. I was very surprised to see these layers and thought they would have been destroyed by recent rain.

Dec. 4, 2015, 12:30 p.m. PST

Region: West Slopes Central - Skagit River to South of I-90
Observation by Mike

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Opening in the trees off road to skyline lake

Weather: Breaks in thick clouds, but no sun. Snowing on and off lightly.

Dec. 4, 2015, 9:15 a.m. PST

Region: Stevens Pass

Elevation: Below treeline

Aspect: E

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: I dug a quick pit at the top of the Skyline Lift at Stevens Pass this morning, in a relatively wind-protected area. I was unable to get the persistent weak layer to fail during a full compression test, but experienced significant wumphing on the way up, and the way down (which was disconcerning). We identified the primary risk to be wet loose snow avalanches, and we selected terrain and skied accordingly.

Dec. 3, 2015, 1 p.m. PST

Region: Stevens Pass
Observation by John & Olivia Race

Did you see any avalanches? No
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: Short information gathering tour in and around Stevens Pass.

Route Description: Ski area base to top of Cowboy with short pokes out of area to South.

Weather: Sky obscured, winds L from SE, no wind transport observed, air temp -4.6C.

Snowpack: @ 5200' on West aspect we found HS 100 cm, HST 20 cm, with a boot pen of 40 cm and a ski pen of 20 cm. These ran on relatively low angled slopes and were both in storm snow and on crust. Roughly 30 cm of 4F to F snow on top of 70 cm of snow with many crusts. The only crust layer that yielded CT results was 50 cm down (under crust) and underlain by 10 cm of 4F. This produced moderate results (RP) We managed to produce shooting cracks up to 5M on wind loaded West slopes above 5000'.

Avalanches: Noticed several skier triggered slabs (from earlier in day) down 20-30 cm (R1, D1, 15 M wide, ran 30 M) on West aspects near and well off ridge tops in exposed areas. We were able to get small slabs to move even on well shaped slopes.

Dec. 2, 2015, 4 p.m. PST

Region: West Slopes North - Canadian Border to Skagit River
Observation by Tino Villanueva

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Swift Creek and Table Mountain, Baker BC

Weather: Partial clearing but warmer than wx fx AM, already +1.5 deg C at 0900 hrs, 4200ft - Heather Meadows. Pulsing waves of precipitation entered area around 1100 with each pulse gaining strength. All rain, no snow up to 5000 ft. 1530 hrs temp +2.7 deg C at 4200 ft. No snow capable of transport on the ground during observations

Snowpack: 15-20 cm HN24 settling quickly with warming and rain. I was a little worried about previous mfc/SH interface from previous high pressure but I think this weather system came in warmer than expected. Even at Mt. Baker, where the NW currently has the most snow, the snowpack is still shallow (~90cm) and providing surface roughness.

Avalanches: I did observe D1 skier triggered wet avalanches but nothing larger in the 4-5000 ft zone, all aspects. Good sliding bed surface for WS and WL avalanches. I also think the weather prevented us, and the few others that were, out from getting into higher elevations where more snow and wind transport may have occurred.

Nov. 29, 2015, 2:30 p.m. PST

Region: Snoqualmie Pass

Elevation: Below treeline

Aspect: N

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: Intense feathery hoar frost at various locations around Snoqualmie Pass. Large flakes of hoar on valley floor along Alpental Road by Sahalie Ski Club and Washington Alpine Club. Hoar frost also appearing in select places along Pacific Crest Trail leading into Commonwealth Basin. Particularly large hoar frost flakes on Avalanche paths between Guye Peak and where the Commonwealth Basin trail splits off from the PCT.

Nov. 29, 2015, noon PST

Region: West Slopes North - Canadian Border to Skagit River
Observation by Simon Trautman

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: just testing this out - went sledding with the 4 year old at baker - pretty good crop of near surface facets in the shade and flat areas below treeline.

Avalanches: hard to see for sure, but looked like a 1-2ft wind slab in alpine west of table.

Nov. 27, 2015, 8:16 p.m. PST

Region: Snoqualmie Pass

Elevation: Below treeline

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Nov. 23, 2015, 9:21 p.m. PST

Region: West Slopes Central - Skagit River to South of I-90

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Nov. 22, 2015, 10 a.m. PST

Region: West Slopes North - Canadian Border to Skagit River
Observation by Wyatt Southworth

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Weather: Clear skies

Snowpack: 1-3mm surface hoar on all elevations and aspects.

Nov. 21, 2015, 2 p.m. PST

Region: Mt Hood
Observation by Patrick Fink

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Up through Timberline then over to Illumination Saddle

Route Description: Up through Timberline then over to Illumination Saddle

Weather: Clear, warm to 40F, warming throughout the day

Snowpack: V. hard surface crust, with intermittent blue ice and frozen windblown snow. Became slightly punchy to boot penetration in the afternoon, but only in isolated locations. Below the top station of the Palmer, ungroomed snow was frozen, becoming almost corn-like and making for good skiing.

Avalanches: No activity observed. There is a glide crack which runs the width of the slope below illumination saddle, and there was significant and near-constant icefall as the day warmed around 1pm

Nov. 21, 2015, 10 a.m. PST

Region: Snoqualmie Pass

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: North side of the saddle above Snow Lake

Route Description: Snow Lake trail

Weather: Sunny - temps in the high 20s

Snowpack: Surface hoar layer evident on shaded north side slopes - below it, 3-5 in powder on top of graupel on top of a hard rain crust.

Nov. 20, 2015, 9:49 p.m. PST

Region: Snoqualmie Pass

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Nov. 20, 2015, 3 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by Dennis D'Amico

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Paradise, MNRP

Route Description: Short tour up to Pan Face after work on NWAC Paradise precipitation gauge.

Weather: Clear - moderate east winds, gusty

Snowpack: East winds led to good transport of recent snow onto lee westerly slopes near and above treeline in the Paradise area Friday. Plenty of wind-scoured areas to the most recent rain crust above 6000 ft. 5 cm new snow above rain crust. HS 80-90 cm (~3 ft) @ 6000 ft in non-wind affected area.

Avalanches: Another party observed isolated and shallow pockets of wind slab while touring at or above 7000 ft or above treeline.

Nov. 20, 2015, 12:30 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by Joe Poulton

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Area from Paradise to Panorama Point Mount Rainier.

Weather: Blue sky, strong winds

Snowpack: Patches of boilerplate with areas of shallow snow cover on boilerplate or hard breakable crust

Avalanches: Lots of visible natural slide paths both wet and dry slab

Nov. 17, 2015, 10:21 a.m. PST

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Nov. 17, 2015, 9:05 a.m. PST

Region: West Slopes North - Canadian Border to Skagit River

Elevation: Near treeline

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Nov. 17, 2015, 7:50 a.m. PST

Region: Snoqualmie Pass

Elevation: Near treeline

Aspect: W

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Nov. 16, 2015, 3:53 p.m. PST

Region: Olympics

Elevation: Near treeline

Aspect: E

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: Heather park trail in Olympic National Park by Hurricane. We were just below the tree line in the snow. Was 18 and 24 inches easily. The snow tended to slip from the ground and was quite coherent. We knew that open slopes were a no go.

Nov. 15, 2015, 1 p.m. PST

Region: West Slopes North - Canadian Border to Skagit River

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: North facing convex slope of 25 to 40°. Treeless area at approximately 5500'

Route Description: Skin Track

Weather: Overcast with weak sunbreaks

Snowpack: Very wind loaded slope

Avalanches: Witnessed another party breaking trail trigger a slab 8 to 10 inches deep. The crown broke about 6 feet above the trail breaker, but didn't propogate or travel far.

Nov. 12, 2015, 2 p.m. PST

Region: West Slopes North - Canadian Border to Skagit River
Observation by Pete Durr

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Excelsior Peak (High Divide). 5500ft elevation. West/East running ridge.

Route Description: High Divide via Damfino Lakes Trail

Weather: Overcast. Light snowfall. 27 degrees. Moderate wind from the south is producing moderate snow transport to the north.

Snowpack: Any where from 5 to 25 inches. Deepest being north aspect just below the ridge top.

Nov. 11, 2015, 9:30 a.m. PST

Region: West Slopes North - Canadian Border to Skagit River
Observation by Mark Waechter

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Heather Pass

Route Description: From Rainy Pass, at HWY 20, followed the Heather Pass / Maple Pass trail to Heather Pass. Descent to Lake Ann, followed shore of Lake Ann and exited by the trail used going in.

Weather: Temps -5C at the start, -3C at the end. Snowing light to moderate 09:30-11:00. A few minutes of partial clearing at around 11:30, followed by more light snow.

Snowpack: 100cm at Heather Pass, with 20-30cm loose dry snow on the top from the overnight storm.

Avalanches: No avalanches observed.

Nov. 10, 2015, 10:10 a.m. PST

Region: Mt Hood
Observation by Joe Poulton

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: Start of the West Chamber to Illumination Rock

Weather: Clear with a west wind

Snowpack: Shallow pack on top of boilerplate with facets above that and 3 layers of more cohesive snow and 2 crust layers variable depths from elbow to shoulder deep. Data gathered on approach above Zig Zag glacier heading towards the South Chamber and traverse over to the West Chamber entrance on Illumination Rock. Data from multiple one hand hasty pits.

Avalanches: One avalanche, climber triggered

Nov. 10, 2015, 10:10 a.m. PST

Region: Mt Hood
Observation by Joe Poulton

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: See previous post for same slide on I-Rock. This is to share a video time lapse visual of the event.

Nov. 10, 2015, 10 a.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90
Observation by Jessica Kelley

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: On the Nason Ridge trail

Route Description: Up the Round Mtn Trail, then west along Nason Ridge

Weather: Blue skies, windy along the ridge, temps in high 20s?

Snowpack: Noticed extensive surface hoar along the ridge.

May 16, 2015, 2:20 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by Bryan Phillippe

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: Numerous moderate-angle slopes at 6000' ~ 7000+' on the east shoulder of Mt. Rainier.

Route Description: Touring up from Fryingpan Creek to the toe of the Fryingpan Glacier.

Weather: Sky ranged from Broken in the AM (8:00) to Few by 14:00. No precip, no wind below ridge line, moderate winds on ridge top.

Snowpack: Wet meltforms with boot-deep pen. No liquid water observed running in the snowpack.

Avalanches: Numerous loose wet slides observable at a variety of aspects. Skiing moderately steep slopes resulted in several shallow, slow moving loose wet slides.

May 16, 2015, 2 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: Area between Glacier Basin and Mt Ruth on the NE side of Mt Rainier.

Route Description: Glacier Basin then heading up and left off the standard interglacier route and around the left flank of Mt Ruth

Weather: Mostly cloudy down low with breaking sun. Mostly sunny above 7500 feet.

Snowpack: There is a 6-8 inch unconsolidated wet corn layer at the surface of the snowpack. The snow was incredibly sticky making for a less fun ski descent.

Avalanches: We were easily able to trigger 4-8 inch deep wet slides on every ski cut and nearly every turn. The steeper it got the worse it got. Attached pic doesn't show the area we tested with ski cuts but shows a small slide triggered from one of our turns. There was quite a bit of that going on.

May 2, 2015, 1 p.m. PST

Region: West Slopes North - Canadian Border to Skagit River

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Easton glacier my baker

Route Description: Standard easton route to summit.

Weather: Off and on clouds but mostly calm below 7500ft. Windy and cold above that. Scattered clouds remained mostly below 8500ft.

Snowpack: No obs. There was no snow until about 4500ft. Didn't measure the dept @4500 but to the casual eye it appeared to be around 1meter deep.

Avalanches: None and stable conditions found even into the late afternoon. No pinwheeling but on warmer temps I'd be mindful for a few more days. Corn should continue to improve higher up over the next few days of warm weather.

April 26, 2015, noon PST

Region: West Slopes South - South of I-90 to Columbia River

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Plenty of pinwheeling but not much else moving beyond that. NE slopes varied with 1-10cm snow on a supportable crust. South slopes, where there was snow, had 1-10cm of corn by mid day.

Route Description: Seymour Peak area south of Naches

Weather: Sunny and warm. Low to mid 50's.

Snowpack: From nothing on south facing slopes to 1 to 1.5 meters on north facing slopes

April 25, 2015, 7 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by Nick Webb

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: Chinook Pass - Naches Peak

Route Description: Chinook Pass around the North side of Naches Peak, skiing mainly in the bowl South of Naches Peak proper (North- North East aspect). Skied West aspect from Naches Peak South summit to finish at Chinook Pass

Weather: Heavy Clouds, Brief Cloud breaks with heavy solar, A flurry of graupel, and flurries of light snow with little to no accumulation

Snowpack: 10+ cm on supportive crust believed to be formed overnight. Snow skied fast despite being a bit on the wet side.

Avalanches: Point releases on Solar slopes below cliffs. Skier triggered loose wet on convex or steep solar aspects.

April 20, 2015, 9:30 a.m. PST

Region: Mt Hood

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Roller balls above crater rock as well as a small loose slide near the bottom of the pearly gates. Looks like from Sunday 4-19. Also, some debris just east of illumination saddle. Snow firm on skin up, didn't transition well through corn stage-mostly just firm then slush. Looks like conditions will be good for another day of VERY early climbing on south side route.

Route Description: South side route.

Weather: Clear and hot. Seems like it did freeze overnight. Warmed up quickly after sun hit ridge at about 8 am.

Snowpack: Mostly stable with some water on top part of snowpack

April 11, 2015, 4 p.m. PST

Region: West Slopes North - Canadian Border to Skagit River

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: Table Mountain

Route Description: We rode blueberry chutes and the line all morning on the north side of Artists point. Deep powder and lots of features to play around on.

Weather: Snowing with intermittent breaks in the cloud cover.

Snowpack: Deeper saturated layers covered with a new layer of 10-12 inches of fresh. Storm slabs and wind loaded steeps seemed to be the most unstable. The temps were good until late afternoon when the sun broke through a little more.

Avalanches: Slough was observed in steeper sections all day, but in the afternoon a larger point slope avalanche was propagated in the gully right below artists. Luckily, no one was buried and the trip remains to be one of the best trips this year.

April 10, 2015, 9:07 p.m. PST

Region: East Slopes North - Canadian Border to Lake Chelan

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

April 8, 2015, 9:42 a.m. PST

Region: West Slopes South - South of I-90 to Columbia River

Elevation: Near treeline

Aspect: NE

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: Nache peak

April 8, 2015, 8 a.m. PST

Region: West Slopes North - Canadian Border to Skagit River
Observation by Scott Kranz

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Slide seen from ridge above and to west of Lake Anne. Slide took place on West/Southwest face of Mt. Shuksan.

Route Description: Lake Anne Trail from Austin Pass

Weather: At time of slide, clear skies. At or slightly above freezing.

Avalanches: Avalanche took place from just below Mt. Shuksan's summit pyramid and fell down southwest face of mountain down to basin below and east of Lake Anne

April 3, 2015, 12:12 p.m. PST

Region: Snoqualmie Pass

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

March 28, 2015, 1:46 p.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90
Observation by Ben Brelje

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Slopes generally north of Ingalls Pass, Teanaway area

Route Description: Followed the summer trail to Ingalls Pass then toured around briefly in the basin below

Weather: Partly sunny to overcast, flurries most of the day, temps hovering around 32-34. Gusty wind; direction depended on terrain

Snowpack: Strong winds Fri night/Sat AM deposited layer on top of the recent rain crust with soft layer immediately below. Wind slab was not yet well bonded. Observed lots of obviously cross-loaded gullies above the summer trail south of the pass.

Avalanches: None observed

March 24, 2015, noon PST

Region: East Slopes South - South of I-90 to Columbia River

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? Yes

Area Description: Powder Bowl, Crystal Mountain. Heavy Sluffing. 1 Skier caught, not burried. pushed downslope approximately 50 metres by a skier triggered soft slide. enough energy and force to knock skier off feet and carry down slope. burried skis and equipment under aproximately 2ft loose snow.

Route Description: Powder Bowl via Kemper's Ridge

Weather: Cloudy

March 22, 2015, 1 p.m. PST

Region: West Slopes Central - Skagit River to South of I-90
Observation by Charlie Hagedorn

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Mailbox Peak

Weather: Full clouds all day, light precip from parking lot at 10 am, becoming moderate by our return at 3pm. Snow level 4100' at 1pm. Light snow at the summit with light to moderate S/SW/W winds. Some graupel mixed in with big flakes. See attached temperature profile; sensor calibrated at 0C, on back of pack, negligible solar effect thanks to clouds/trees. Short temperature spike at summit from placing sensor on warm(er) ground.

Snowpack: Height of snow at Mailbox summit ~2cm, possibly all new.

March 22, 2015, 10 a.m. PST

Region: West Slopes South - South of I-90 to Columbia River

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Near Sluiskin Falls

Weather: Light snow

Avalanches: Evidence of very recent small (? I'm not a forecaster but it looked to be enough to completely bury a human) avalanche on South facing slope. Possible overnight or early-morning point, slab or cornice failure. Crowns observable above and below rock in photo. This occurred during weekend snow accumulation near Paradise. Roller balls observable during weekend on nearby S-SE facing slopes.

March 16, 2015, 7:45 a.m. PST

Region: Mt Hood

Elevation: Below treeline

Aspect: E

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: Photo test.

March 16, 2015, 7:43 a.m. PST

Region: Mt Hood

Elevation: Below treeline

Aspect: S

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: Test photo.

March 15, 2015, 3:30 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by International Mountain Guides Level 1 Glass

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: We traveled in the Edith Creek area below the Golden Gate bowls and Panorama Point.

Weather: Snow in the morning turned to rain-snow mix and finally to rain around 1300hrs. Winds were moderate out of the SW.

Snowpack: New snow accumulation of 6-12" was very dependent on elevation. Sticky wet heavy surface snow produce lots of new roller balls on a variety of aspects near treeline. All observation suggest Loose Wet avalanche were possible/likely.

Avalanches: We saw 3 Loose Wet avalanches S-SE aspect near treeline. At least two of three were human triggered. The largest was a D2. We also observed one small (D1) storm slab avalanche triggered by a small cornice collapse on a SE aspect NTL below Panorama Face. This appears to have occurred in the early morning hours.

March 11, 2015, 6:04 p.m. PST

Region: Mt Hood

Elevation: Near treeline

Aspect: SW

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: Test

March 11, 2015, 3:41 p.m. PST

Region: Stevens Pass

Elevation: Near treeline

Aspect: NE

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: This is a test observation.

March 11, 2015, 2:38 p.m. PST

Region: Mt Hood

Elevation: Below treeline

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: Included 6 pictures taken via the camera function.

March 11, 2015, 2:36 p.m. PST

Region: Mt Hood

Elevation: Below treeline

Aspect: S

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: This time the camera came up with a black screen until I touched the camera icon, and then it showed the image the Camara was seeing.

March 11, 2015, 2:34 p.m. PST

Region: Mt Hood

Elevation: Below treeline

Aspect: S

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: After a picture has been taken, it goes to a black view from the camera instead of showing what the camera sees. It still will take a picture.

March 11, 2015, 2:32 p.m. PST

Region: Mt Hood

Elevation: Below treeline

Aspect: SE

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: This is in the hood of Fremont.

March 1, 2015, 5:50 a.m. PST

Region: Mt Hood
Observation by Michael Getlin

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: E Aspect of top of Hog's Back and area W of Hogs Back, above Bergschrund

Route Description: Up Hog's Back, attempted to head through Pearly Gates. Also attempted to traverse to Old Chute

Weather: Clear, Calm. Temp NO but estimated at 10 F +/-

Snowpack: Cohesive wind slabs varying in hardness and located on unusual aspects. Some hard slabs of varying depths, especially W of Hog's Back, sat on top of storm snow. Several quick hand shears broke during isolation and bonding to the underlying crusts was poor early in the day (0500-0600) but improved significantly by early afternoon. Went back up around 2PM, climbed and skied Old Chute. The interface of concern had quickly bonded and was not particularly reactive.

Avalanches: Three small (D1) loose wet on the ESE aspect of upper west crater rim, emanating from rock outcroppings before 2PM. This was interesting as the temp was well below freezing....guess even in March the sunlight can do the trick.

Feb. 27, 2015, 3:50 p.m. PST

Region: Mt Hood

Elevation: Near treeline

Aspect: S

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Feb. 23, 2015, 3:01 p.m. PST

Region: West Slopes Central - Skagit River to South of I-90

Elevation: Above treeline

Aspect: N

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: This is a test observation.

Feb. 23, 2015, 1:27 p.m. PST

Region: West Slopes Central - Skagit River to South of I-90

Elevation: Near treeline

Aspect: N

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Feb. 21, 2015, 7:44 p.m. PST

Region: Snoqualmie Pass

Elevation: Above treeline

Aspect: SW

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: Teaching level 2 class today in chair peak basin doing pit profiles at the thumbtack. Most pits were very consolidated as expected but one pit had three repeated CTH(SP) down 60cm on 3mm polycrystals. Will try to video over tonight. No results in ECTs but possibly a layer to keep an eye out into spring.

Feb. 21, 2015, 12:30 p.m. PST

Region: Snoqualmie Pass
Observation by Paul Bongaarts

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: N47° 27' 35.7" W121° 27' 40.2" Base of Chair Peak, near Thumbtack SW aspect, 39-degree slope

Weather: Clear

Snowpack: See pit, apologies in advance for any recording errors! CT30(SP) observed near Chair Peak. Repeated 3x. Video was of 3rd test and failed at CT12. Other test pits in the area with different aspects did not have similar results.

Feb. 21, 2015, 8:03 a.m. PST

Region: Mt Hood

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Feb. 13, 2015, 5:24 p.m. PST

Region: Mt Hood

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Comments: test observation. Please let Erik know if you see this

Feb. 13, 2015, 2 p.m. PST

Region: Snoqualmie Pass

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Kendall lakes region and the mostly southern facing zone. Little snow below trees @ 4500'. More snow out on open terrain and shallower slopes. Above 5k on steeper slopes there is a thin foot to three of snow pack. Some aspects are, on the other hand, completely dry.

Route Description: Gold creek snow park up through Kendall lakes to the entrance of the Kendall chutes on the ridge.

Weather: Mid 50's. Sunny with a slight overcast.

Snowpack: Stable but shallow at 5k. Measured with a ski poke. Didn't bother digging or probing for dept. Some aspects are dry, rocks exposed everywhere. Won't last long.

Avalanches: None.

Feb. 10, 2015, 11:30 a.m. PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by Denis Du Bois

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Paradise area, Mt. Rainier Nat'l Park.

Route Description: Profile site, 5780 ft (treeline), N aspect (30 T), 30 degree slope.

Weather: Overcast, winds light from SSW, -1C/31F, mix of rain, freezing rain and light snow. Later: By 1400h precip had ended, mostly cloudy 7/8 sky, brief sun breaks, warmer.

Snowpack: 235 cm total. Approx 30 cm new snow in the past 10 days, high moisture content, rounded grains, well bonded to a stout base. Snowpack is right side up for the most part except for some crusts. Boot penetration 20 cm+. We dug a 120 cm pit at a N aspect site described above. Results notwithstanding, we had already ruled out the southerly aspects based on NWAC, active tests, and the day's forecast of clearing skies. Beneath the top 10 cm of fist-soft new snow from 2/9 and early 2/10, a thin interface would fracture but not cleanly or consistently, and did not propagate. CTN. ECTN 10 Q3 PC. No storm slab or wind slab observed. At the interface beneath the top 30 cm is a thick hard crust that fractured with some effort but did not propagate. CT 30 Q3 RP. ECTN 16 Q3. The fracture was above the ~4 cm K crust that exists throughout the Paradise area and was exposed for a long time before being buried on 2/1/15. Below 30 cm is pencil-hard snow matching other recent observations in the Paradise area. A layer at 35 cm took all 30 loading steps or more to fracture and did not propagate. CTN. ECTN 30 Q3 PC. At 100 cm, forceful tugging on a shovel shear produced a resistant-planar fracture as the column toppled. This was the cleanest fracture of the day. ST Q2 RP.

Avalanches: Point release R1 D1 small shallow loose wet sluff initiating at rocks and small trees on 45-50 degree slope, SE aspect 140 T, at 1200h, as temps rose above freezing and clouds were thinning. Accompanied by an increasing number of snowballs similarly initiated nearby and on comparable slopes throughout the terrain in this elevation band.

Feb. 10, 2015, 7:35 a.m. PST

Region: Mt Hood
Observation by Patrick Fink

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Parallel meadows west of Timberline boundary, East of Little Zig-Zag

Route Description: Yoyo in meadows as above, remaining on slopes <30d but for small test slopes.

Weather: West wind ~20 mph and significant snow at 0600 becoming flurries with moderate wind by 0830. Sky obscured by cloud, beginning to clear around 0900.

Snowpack: ~25 cm of fist-4f hard storm snow over 10-15 cm wet rounds over icy base. Some 10-20cm sensitive wind slabs at East-facing ridgetops. Easy to kick cornices/slabs but not propagating. Observed storm snow hazard: moderate becoming low, observed wind slab hazard: considerable becoming moderate.

Avalanches: None observed

Feb. 8, 2015, 11:15 a.m. PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by Tod Bloxham

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Paradise - Glacier Vista Trail - 6100 SE Aspect

Route Description: Up to top of Edith Creek via Skyline/Glacier Vista Trail, down/across Edith Creek to South Face of Upper Paradise Valley

Weather: Partly Cloudy & Filtered AM, Overcast PM; +3*C; Light Winds

Snowpack: HS 140-190cm; HSN 10cm DF on top of mostly consolidated wet snow; CTH30cm at unconsolidated rounds. Evidence of wind transport 5600'-6600' near Pan Point. Good ski quality all the way down to Paradise Valley Road.

Avalanches: Lots of pinwheels on S slopes off or rocks/trees. Especially large amount of pinwheels off of end of Golden Gate above Paradise Valley/Mazama Ridge.

Feb. 8, 2015, 10:30 a.m. PST

Region: West Slopes Central - Skagit River to South of I-90
Observation by Tyler Meek

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Unstable; constant movement

Route Description: Cascade Pass

Weather: sun breaks

Snowpack: virtually no snow at 4k feet

Avalanches: Unstable; constant movement in upper elevation

Feb. 6, 2015, 6:40 p.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Feb. 5, 2015, 9:30 a.m. PST

Region: West Slopes North - Canadian Border to Skagit River
Observation by Jeremy Devine

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Mt. Baker Backcountry

Route Description: Took road to Martha's Ladder and skied NW aspect slope.

Weather: 09:30 4400' 100% cloud cover Heavy rain 36F 5 mph gusts to 15 mph

Snowpack: Water saturated. 10cm ski penetration. 40cm boot penetration. More fun skiing than expected.

Avalanches: Recent R2 D1 Loose wet debris observed on north aspect of Table Mountain.

Feb. 3, 2015, 5 p.m. PST

Region: East Slopes North - Canadian Border to Lake Chelan
Observation by Ryan Murray

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Above Cutthroat Lake near WA Pass.

Route Description: Skied E-NE aspects from 5000'- 7200'. Mostly lower angle terrain.

Weather: Warm with lots of trees shedding snow up to 6000'.

Snowpack: HS @ 7000' = 280cm HN= 15cm @ 5000', 30cm@7000' Saw/felt evidence of windslab in lee terrain but saw no significant results in isolated column or ski tests. Ski quality was good, better on low angle terrain.

Jan. 31, 2015, 10 a.m. PST

Region: West Slopes North - Canadian Border to Skagit River
Observation by John Minier

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Mt. Baker Backcountry - Artist Point. ~ 5000 ft. Near Treeline.

Route Description: Table Mountain Tour

Weather: Overcast. Light winds. Temp > 0 C.

Snowpack: Ummm - Consolidated... However, did note approximately 1.5 cm of surface factets topped with 8mm surface hoar on northerly aspect. Daytime warming has destroyed this layer on most solar aspects.

Avalanches: No current or recent activity.

Jan. 28, 2015, 3:38 p.m. PST

Region: West Slopes North - Canadian Border to Skagit River

Elevation: Near treeline

Aspect: E

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Jan. 25, 2015, 7:16 p.m. PST

Region: Mt Hood

Elevation: Above treeline

Aspect: SW

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Jan. 25, 2015, 1 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by Andrew Bertino

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Mt. St. Helens, south face

Route Description: We climbed to the St. Helens crater rim via the Swift Ski Trail and Worm Flows route.

Weather: Clear and cool on the night of the 24th, followed by a very warm and sunny day on the mountain. Approximately 60 degrees at the base, falling to mid-50s near the summit rim. Moderate winds on the upper mountain. Lenticular clouds were observed several thousand feet above nearby Mt. Adams.

Snowpack: Very little snow coverage overall, we climbed nearly 3000 feet from the trail head before skinning. A thin layer of spring-like corn snow on top of an impenetrable crust characterized essentially the entire route. No active wind transport was observed, though there were some isolated icy and more scoured sections near the rim. Excellent skiing from the rim down the south face. The snow became heavier and wetter as we descended.

Avalanches: No avalanches or debris were observed.

Jan. 24, 2015, 4 p.m. PST

Region: Snoqualmie Pass
Observation by Trevor Kostanich

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Alpental Valley

Route Description: Source Lake - No Fog towards Pineapple Basin

Weather: Light rain, warm (low 40s).

Snowpack: Fully saturated. Water running underneath snowpack in volumes and locations not normally familiar with. The top of the snowpack is smooth and supportable. Big concern is the water flowing at the ground. This will continue all hours next few days with high freezing levels.

Avalanches: Wet loose from early Sat morning. Observed final icefalls dropping from RapWall cliff but did not entrain any loose snow. Again, the concern at these mid elevations is not the surface snow but the erosion underneath.

Jan. 24, 2015, 2 p.m. PST

Region: Stevens Pass
Observation by Ian Nicholson & Chris Meder

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Stevens Pass, Grace Lakes, 4300ft

Route Description: We toured near Grace Lakes during an AIARE Level 1 course

Weather: Obscured for most of the day with light mist, decreasing in the late afternoon.

Snowpack: The snowpack can be characterized by varying levels of moisture content, ranging from moist to very wet, where liquid water is easily visible without magnification and the snow can be "rung out". In the upper snowpack we observed no layers we would qualify as dry. We dug a snow pit on a west facing, 25 degree slope at 4300ft where our results were 2x CTH Q2 down 38cm, 2x CTH Q3 down 38cm all failing on a 2cm thick 4F very wet, nearly slush layer above a crust (P). We also observed snow pit test scores of ECTX, CTN, RB7. We found the January 15 crust down 54cm at our location. Our HS at this location was 115cm, ski pen 10cm, boot pen 40cm.

Avalanches: We didn't observe any avalanches from the previous nights rainfall but this is mostly a result of our poor overall visibility.

Jan. 20, 2015, 11:30 a.m. PST

Region: West Slopes North - Canadian Border to Skagit River

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Large south facing bowl in Cutthroat Drainage south of Granite Pass

Route Description: Hwy 20 to summer parking, then summer cutthroat pass trail. Leave trail at second side creek and ascend

Weather: Clear

Avalanches: Observed numerous slab and soft snow avalanches on east and south aspects. Slab avalanches had run and then caused new releases multiple times in the same slide path. Also observed slab avalanches that had propagated across a significant portion of this bowl.

Jan. 19, 2015, 6:25 p.m. PST

Region: Stevens Pass
Observation by John & Olivia Race

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Skyline Ridge - Moonlight Bowl

Route Description: Up to Skyline Lake and then to Skyline Ridge. Over to second antennae and down rib West of Moonlight Bowl. Fairly conservative in our terrain choices.

Weather: 10:30 am sky overcast, winds L-NNW, Airtemp 27.4F, snowing lightly (S-1).

Snowpack: @ 5300 NE HS 155cm, 45 cm to 1cm crust, then 10 cm to .5 cm crust. CTM's down 46 cm SC-Q2 under 1 cm crust. ECTH SC-Q2 down 46 on rimed needles. Pit results were less conclusive than moving observations, which included multiple collapses at 5050-5100 in trees on SSW slopes. Skiing was good above 4500 and very heavy below. Curious to see what others found under the two thin bottom crusts, which were the most reactive layers. On Saturday things seemed more reactive at 4900 ' 2 inches above the thick, Jan 15 crust now down 58 cm, but never propagated more than a ski length or two. We skied this section again today, with no results, including on poorly supported test slopes.

Avalanches: None observed.

Jan. 19, 2015, 4 p.m. PST

Region: Stevens Pass
Observation by Ryan Murray

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Windy Ridge 1.5 miles NW of Stevens Pass

Route Description: Ski toured small groups on several runs 5400'-4400' w thru n aspects.

Weather: Light snow all day. Ta= -3 c @ 12:00 @ 5400' Previous wind loading from mod-strong wsw winds sat-sun.

Snowpack: HS @ 5400' = 180cm HS @ 4600' = 110cm Localized whumphs prompted investigation of old/new snow interfaces on various Jan crusts underlying 13-16" of settled storm snow. North aspect @ 5400' ECTN with interface at 40cm down. West aspect @ appx 5100' ECTN with interface at 45cm down. Observed wind loaded pockets in open terrain well below treeline. Stuck with lower angle well supported terrain today.

Jan. 19, 2015, 2 p.m. PST

Region: Stevens Pass
Observation by Ian Nicholson

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Stevens Pass, Skyline Ridge.

Route Description: During an AIARE L1 course our group toured up the front side of Skyline ridge and over the pass directly above the lake. Ski quality consisted of very heavy powder skiing.

Weather: Obscured or overcast with light precipitation (S-1 to S1) most of the day.

Snowpack: We observed 37cm of storm snow with the upper 20cm being F and the lower portion (21-37cm) being 4F with a very slight crust between them that is likely a result of yesterdays mid-storm warm prior to changing back to snow. This 37cm of newer storm snow is sitting on a 2cm thick crust (P-). Below this crusts is F down to 61cm and 4F to 81cm sitting above another crust (P). We dug a pit on a 27 degree slope on a N aspect at 5200ft on the North side of Skyline ridge and preformed several tests and observed a slightly surprising RB2 WB Down 60cm, ECTP11 down 60cm, 3x CTM Q1 (SC) down 60cm, along with 2x CTM Q2 down 60cm, and 1x CTH Q3 down 60cm. All of our tests failed on the F-4F interface that is around 20cm below the rain crust that existed prior to this most recent storm. What is interesting is that despite these tests results we observed no natural avalanches in the area. We observed HS in several locations: 4400ft on the front-side meadow 115cm 5100ft at Skyline lake 185cm 5240ft on the North side of Skyline ridge 210cm

Avalanches: We did not observe any recent avalanche activity.

Jan. 19, 2015, noon PST

Region: East Slopes North - Canadian Border to Lake Chelan
Observation by Brad Sawtell

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Hwy 20, Cutthroat Drainage, North aspect, 6300'.

Weather: Partly obscured morning, mostly cloudy afternoon. Light west ridge top winds, though localy, north winds. -2 to -4C.

Snowpack: Near tree line, HS hovered around 240 cm's. HST 70 cm's. Snowpack tests revealed right side up storm snow, CT12-15/ SC (sudden collapse) or Q1, down 71 below crust on 2mm facets, ECTP 10/SC. Quite the facet crust sandwich. Observed widespread collapsing and localized cracking in the storm snow in mildly wind affected areas. No interest in venturing into steeper or exposed terrain.

Avalanches: Widespread loose snow avalanches on all aspects in alpine and near tree line elevation bands. Observed 2, SS-R1D1/D2-N-I's on north aspects above tree line, 2, SS-R2D1-N-I's on west aspects above tree line, and one (viewed across the valley) SS-R2+D1+?-N-I on a south aspect in the alpine. Of note, this one occurred on the same slope of the reported AS triggered avalanche around New Years.

Jan. 17, 2015, 6:30 p.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90
Observation by Ian Nicholson

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Mission peak on north through east aspects between 6000ft and 6800ft, just northwest of the Mission Ridge ski resort.

Route Description: During a Northwest Mountain School AIARE Level 2 course our group toured on North through East aspects on Mission Peak, just Northwest of the Mission Ridge ski area.

Weather: Obscured or Overcast sky conditions all day with steady wetter snow (S1 to S2). Steady moderate SW winds were observed near ridge tops.

Snowpack: We observed 8cm of new snow on a P- hard crust, above rounds siting on a pair of crusts (~35cm down) with buried surface hoar sandwiched between these crusts. Below this was rounds but on the ground, of interesting note: is 20cm of 2mm facets. We dug several pits on an east facing 25 degree slope at 6,600ft where we observed 3x CTM Q1 (SC) on the 10mm buried SF that was sandwiched between two crusts down 35cm from the surface. We also preformed 2x ECTN's where it started on this layer but never propagated across our column. We also preformed a Rutschblock that scored RB6 EB on the same layer. We observed a wide range of HS from 130cm to 70cm throughout or day touring in elevations between 6800ft-6000ft.

Avalanches: No recent avalanches were observed.

Jan. 13, 2015, 12:45 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by Andrew B. Carey

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Paradise environs from 5,500 to 8,000 feet elevation; widespread avalanches on most aspects but especially on southerly aspects.

Route Description: Paradise Valley Rd to 4th Crossing to Mazama Ridge to Stevens Canyon.

Weather: Sunny today but avalanches occurred during or soon after the major snowfall followed by heavy rain 8-10 day ago.

Snowpack: Hard set concrete with 1 inch of new; 8 days ago breakable crust; then new storm & rain when I was not present.

Avalanches: many; south facing Skyline Ridge NW of Sluiskin Falls south facing back bowl Mazama Ridge; east-facing MR back bowl; east facing Skyline Ridge.

Jan. 11, 2015, 1 p.m. PST

Region: West Slopes North - Canadian Border to Skagit River
Observation by Lyle Haugsven

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Mt Baker Backcountry, Herman Saddle

Route Description: From Heather Meadows to Herman Saddle and return.

Weather: At 5000': Sky: Overcast Temp: 0 C Wind: Light South Precip: S-1 Snowing lightly.

Snowpack: HS 100cm. New snow: 2cm. New moist snow bonding well to wet grains/crust at surface. Mixture of wet grains and rounds to the ground. Solid.

Avalanches: Only saw avalanche debris from cycle earlier in the week.

Jan. 10, 2015, 3:30 p.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90
Observation by roland emetaz

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Holden Village vicinity, valley bottom, 3200'

Route Description: NA

Weather: Overcast, calm, 29.8F

Snowpack: average depth 3" Demonstrating and practicing stability tests, ECT, CT and shovel shear with up to 45 students and staff.... Had several failures: ECT 14 & ECT 15, crack propagated halfway and completely across the entire column.... fairly smooth surface... Failure was about 14'' down on a shallow layer of low density snow between two crusts... Possibly some surface hoar on the crust.

Avalanches: Tests were done on a south facing slope near the valley bottom... At this time of the year the valley only has about an hour and half of sunshine.... The test slope probably is shaded by trees....... Actually had a CT3 on the same layer in the same location......

Jan. 8, 2015, 1 p.m. PST

Region: West Slopes North - Canadian Border to Skagit River
Observation by Lyle Haugsven

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Mt Baker Backcountry/Goat Mountain

Route Description: Hiked up the south west aspect of West Goat Mountain. Skied SW face return to car.

Weather: Sky: Scattered clouds Precipitation: NO Wind: Calm to light from the East. Temperature: 4.5 C at 4000', 7 C at 6725'

Snowpack: HS at 4000' about 40CM soft wet snow. Supportable crust formed at about 5000' with a 2-5cm soft sun warmed surface.

Avalanches: D2.5 wet slab on southwest aspect starting at approx 6500' running to about 5000' probably form rain earlier in the week. No active avalanching observed during tour.

Jan. 7, 2015, 2 p.m. PST

Region: West Slopes North - Canadian Border to Skagit River
Observation by Lyle Haugsven

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: North side of Mt Baker

Route Description: Heliotrope ridge trail to 9000' on the Coleman-Deming route and return.

Weather: Sky: Clear Temp: 7 C at 5500', 2 C at 9000'. winds North light to Moderate. Precipitation: No

Snowpack: Supportable crust, wet snow under crust between 5-5500', frozen snow pack above 5500'. About as solid a snow pack possible. Snow never softened on north facing aspects even with above freezing temps and limited sun.

Avalanches: No avalanches seen. Big concern is "slide for life" on steeper north facing aspects.

Jan. 4, 2015, 1 p.m. PST

Region: West Slopes North - Canadian Border to Skagit River
Observation by John Minier

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: South Face of False Herman - AKA "The Boulder Field." ~4400 ft. Variety of slope angles between 25 and 45 degrees. Terrain characterized by small, convex features and complex gully systems.

Route Description: Herman Saddle Ascent Track

Weather: Snowing Heavily. Prevailing winds from the SW with ground-level winds coming from the north. Wind speed moderate to strong. Temperatures warmed from high 20's to low 30's over 5 hour period.

Snowpack: 3 inches of new snow and rapidly forming windslabs on lee and crossloaded features (S and SW aspects at ground level near valley bottom). Widespread shooting cracks with easy hand shears and shovel tilt test results. Mid and lower pack generally well bonded.

Avalanches: Numerous D1 and D1.5 natural wind slab avalanches observed on lee features. Was leading an AIARE level 1 avalanche course and facilitating a student planned tour. Ended up pulling the plug near tree line due to low visibility and fear of more destructive avalanche potential in larger, alpine terrain features. Intentionally triggered some very sensitive, D1, crossloaded pockets for the sake of the course. Super cool learning experience for students!

Jan. 1, 2015, 10 p.m. PST

Region: West Slopes North - Canadian Border to Skagit River
Observation by Jeremy Allyn

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Mt Baker BC - Coleman Pinnacle zone

Route Description: Rang in the New Year by touring into the Coleman Pinnacle zone via south side of Table Mtn, Ptarmigan Ridge and upper Wells Creek.

Weather: Scattered high clouds, temps from upper 20's to low 40's, C-L winds rising by afternoon to M from the SW

Snowpack: HS was 220cm at 4600ft head of Wells Crk. Variable wind effect near treeline and in open alpine. N-W aspects, anything low angle, and shallow gulley features held cold, settled snow that skied well. Wind slabs were between 10-30cm and not reactive. We skied a steep 40deg NW asp at 6000ft near Coleman Pinnacle that did not budge. All solar aspects were horrible ski quality.

Avalanches: Aside from the typical size D1-2 wet loose on the south side of Table Mtn, no other recent avalanches observed. No cracking, whumphing or results from slope tests.

Dec. 31, 2014, 3:30 p.m. PST

Region: Mt Hood
Observation by Patrick Fink

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: East side of "ziggy bow" or "little zigzag", depending on who you ask

Route Description: west out of timberline, climbed to head of zig zag even with Mississippi head, down along the east side of the canyon into the trees to 4400', then back to tline

Weather: expected cold weather, but it was super warm at 5k. Tree bombs galore from all sunny timber, and raining water in the sun. No appreciable wind or cloud cover

Snowpack: at marked location, depth 110 cm, wind loaded. 65-76 cm from most recent storm. Easy shovel shear down 25-30 cm, similar CT result, sudden planar shear on isolation. Little propagating energy and spatially variable as only the wind load in dense trees was sensitive to my weight. Everywhere at and above was pen+ hard windslab and sastrugi. In the right steep terrain and the wrong place it could go, but it'd be small. Overall observed danger moderate and decreasing.

Avalanches: None noted. Some cornice fall on east aspects in moraine terrain.

Dec. 31, 2014, 1 p.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90
Observation by Jamie Tackman

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: Mission Peak

Route Description: Clara Lake Basin Just a quick note, full report to follow.  Mike and I took a tour into Clara Lake Basin just to get out and about.  After watching the results of the Avy controls inside Mission we were not really expecting that much. As we made our way up through the basin we were experiencing settling all the way, upping our concern, but still a little casual.  We discussed lines we might ski, most of what we talked about was avoiding the thin snow.  We kept to a low angle route, still seeing the settling.  when we stopped for lunch we dug a pit and found the weak layer, A deposit of large crystals on the rain crust, with the new snow topping that.  After lunch we decided to travel a little further up slope, and start our ski down.  At the top of our climb we were feeling very uncomfortable with any steep skiing.  We had thought we would ski a steeper south facing line on the way down, but because of our uneasiness with the snow we decided to keep to a low angle line.  At the top of the steeper line, I suggested we "just go have a look" so we started over but the access was not all that great so we bagged that idea and resumed our planned line.  As we came around the corner and looked at the steeper line it had all slid.  We were at least 10 meters from the slope at our nearest.  It was a south facing slope 140 degree true 6500 feet and at the top 35 degrees (un measured) failed on the faceted layer, cross loaded from the north wind we had the two days before.  It took the whole slope, probably 30 or 40 meters wide, and ran to the bottom of the slope 200/250 vert. Crown 76 cm/100cm.

Weather: Clear

Dec. 30, 2014, 2 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by Garth Ferber

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Chinook Pass

Route Description: Saddle Bowl. NWAC trip to work on Chinook Pass weather station.

Weather: Clear, cool, light winds.

Snowpack: Recent snow mainly right side up and good skiing. No signs of instability. Local wind affected/blown snow on ridge above Saddle Bowl but not enough for slab layers and weak layers lacking. We figured moderate avalanche danger near and below treeline.

Avalanches: One previous SS crown on very steep rocky east facing cliffs of Yakima Peak.

Dec. 29, 2014, 10 p.m. PST

Region: Snoqualmie Pass
Observation by Jeremy Allyn

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Upper S. Fork of Snoqualmie drainage, Source Lake area

Route Description: Quick trip for NWAC to observe HS and recent storm snow in the Below Treeline - Near Tree Line elevation band. I took the "winter route" from Alpental and toured to the top of the "fan" below the East Face of Chair

Weather: Scattered and broken skies, calm-light N winds, high of 23F. Low crest level clouds hung to the west slopes

Snowpack: Height of Snow (HS) and Height of Storm (HST) 3500ft, HS 85cm, HST 35cm - bottom of Mushroom Couloir 3650ft, HS 135cm, HST 50cm - near Source Lk 4300ft, HS 145cm, HST 70cm - top of fan Profile at 4300ft. SE aspect, 36deg. CTM BRK down 27cm (x2) on density change from Fist-4F. CTH RP down 55cm (x2). No results from quick tests. Moist rain crust is 70cm down that varies in thickness. Basal pack moist to wet to the ground below crust.

Avalanches: Some small loose dry from cliffs above summer trail. No cracking, whumphing or avalanches observed near and below TL. Very Good ski quality on the fan

Dec. 29, 2014, 2 p.m. PST

Region: West Slopes North - Canadian Border to Skagit River
Observation by Lyle Haugsven

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Mt Baker Backcountry, Anderson Creek Drainage

Route Description: Toured from Heather Meadows over Herman Saddle up southeast ridge of Barometer Mountain and return.

Weather: Sky: Scattered to clear Winds: Moderate from East/Northeast. Temperature: -6 to -9 Precip: none

Snowpack: HS: 100-185cm. 40cm low density snow well bonded to crust on west aspects and below tree line. Wind effected surfaces on unprotected east faces above about 5000'.

Avalanches: No observed avalanches.

Dec. 29, 2014, 11 a.m. PST

Region: Stevens Pass
Observation by John Race

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: We toured down the left boundary of Stevens Pass Ski area on the backside. This area had not been skied since the last big storm and had not had any control work done. We were just outside the ski area boundary. We skied this from 5600-3800 and then crossed over to Susan Jane Lake and toured to Christmas Pass and then took a line off the West side of Susan Jane Peak.

Route Description: We skied SE terrain between 5600 and 3800 on SE and E aspects up to 36 degrees and then a short pitch on NW from 5150-4650 on W aspect above Susan Jane Lake up to 32 degrees.

Weather: Air temp was in low 20's and winds were light from the NE. We had mostly clear skies and a lot of solar radiation, but the sun was low enough that things were not crusting up.

Snowpack: 5554' - Top of Polaris Run Stevens Pass. SE facing slope. HS 115cm, Crust is down 47cm and is 11cm thick. Sitting on top of crust is 16 cm of snow from 2 storms back and then 31 cm from last big storm plus the bit accumulated yesterday. Multiple CTM (11,11, and 13) down 31cm. (Q1 Resistant Planar) on large dendritic crystals and graupel. no result on interface between crust and storm snow. No whumpfing, no shooting cracks, some settlement observed around trees (2-3 cm).

Avalanches: None observed. 5-6 skiers took a very aggressive line on the skiers left edge of Highland Bowl and sluffed the top 2-3 inches on the steepest section. Their route went over the main convexity with all the releases at the convexity.

Dec. 29, 2014, 10:30 a.m. PST

Region: West Slopes North - Canadian Border to Skagit River
Observation by Eric Beamer

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: South side of Mount Baker

Weather: clear; light to no wind below 5,000 ft; strong east wind at higher elevations with rapid snow transport

Avalanches: Remotely triggered one (size D1) hard wind slab approx 5800 ft near Metcalfe Moraine; another hard wind slab (size D2, 3ft crown) triggered sympathetically in the next gully west of the first avalanche. We remotely triggered another small hard wind slab when descending the area to be out of the wind/snow transport. No avalanches were triggered with skiers on the slabs. We were able avoid wind loaded terrain through route selection, yet energy was transferred to nearby sensitive slabs.

Dec. 28, 2014, 1 p.m. PST

Region: West Slopes North - Canadian Border to Skagit River
Observation by Lyle Haugsven

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Bagley Lakes drainage at Mt Baker Ski Area Backcountry.

Route Description: From Heather Meadows Blueberry chutes, South side Herman saddle, and North East Table from Herman saddle.

Weather: Sky: Scattered to Overcast Precip: NO to S -1 Temp: High of -3 low of -7 Winds: Calm

Snowpack: HS 100cm - 160cm, New snow increases in density with depth and bonds well to a crust at about 45cm deep. Strong pack below crust. All aspects ski incredibly.

Avalanches: Small wind loaded pockets skier triggered. Only in the steepest terrain(SS-AS-D1-R2 North aspects). A couple small previous naturals on large steep north aspects of Table Mountain (SS-N-D1-R1). Minimal sluffing.

Dec. 27, 2014, noon PST

Region: Snoqualmie Pass

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? Yes

Area Description: Cliffs near the ski run Rollen at Alpental on the upper mountain.

Route Description: We were ski touring under the cliffs looking for a safe route on our ascent.

Weather: Snowing, approx. 20 degrees, wind approx. 5-10mph.

Snowpack: Storm snow 4-8" that appeared to be bonding well to bed surface per quick pits and shear testing. No whoomphing, cracking, or other signs of instability noted on the majority of terrain we traveled.

Avalanches: Our group of 4 skinned one at a time across a 30 yard apron of snow below a cliff band to a cluster of trees. Then I set back out on the apron, above our skin track, to put a switchback in, when the entire slope ripped out. I was swept off my feet and travelled approx. 10-15 feet before coming to a stop. I did not have my airbag ready for deployment. It was a class I. The apron was continually being loaded with spindrift during the storm and thus was able to become a slab. Our ski cut reduced the upward force needed to hold the slab in place. The rest of the group had their skis buried by debris, but remained unscathed in the trees.

Dec. 26, 2014, 1:30 p.m. PST

Region: Mt Hood
Observation by Heiko Stopsack

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Mitchell Creek drainage

Route Description: North East facing slope. Just outside of the resort. Right before the right turn onto Vista Ridge common skin track

Weather: Clear Light winds, Air temp. 21 f .

Snowpack: Unable to load pit profile: NE facing slope. 30' Away from trees and untracked by skiers Pit Depth 105cm to ground. 105 to 85 cm " F" Temp 4.8 C 85-75cm "1F " Temp 4C 75-65cm "4F temp 4.3C 65-45cm "F" temp 4.4 C 25 to ground "1F" no temp taken CT4 Q2-3 @ 85 cm CT13Q3 @65 cm

Avalanches: none seen

Dec. 25, 2014, 2 p.m. PST

Region: West Slopes North - Canadian Border to Skagit River
Observation by Lyle Haugsven

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Mt Baker Backcountry

Route Description: Toured from Heather Meadows to Ptarmigan ridge via Artist Point. Return to parking over North face of table Mountain.

Weather: Sky: Overcast Temp: 23 degrees Fahrenheit Wind: calm to Light from the NE Precipitation: No

Snowpack: 6-12 inches of recent snow well bonded to a firm crust over strong mid and base layers. Lower angle terrain skied better because you didn't hit the crust.

Avalanches: No recent activity even skiing steeper terrain. Skied over a lot of past avalanche debris.

Dec. 22, 2014, 1 p.m. PST

Region: East Slopes North - Canadian Border to Lake Chelan
Observation by CB Thomas

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: North side of Cutthroat Creek on a south west aspect at 6800'

Route Description: Climbed a south facing rib above Cutthroat Creek and traversed west into a large basin. We experienced significant settling along the route after reaching tree line. We reached the ridge top and traversed a south west aspect to reach lower angled larch glades.

Weather: Partly sunny, light winds, temperature in upper 20's.

Snowpack: HS 205cm, CT1 Q2 @65cm. Failure on facets above a crust.

Avalanches: While traveling at ridge line on a southwest aspect at 6800' we triggered two separate avalanches below us on 35 degree slopes. SS AS R2 D2 on the same weak layer identified in the pit.

Dec. 22, 2014, noon PST

Region: East Slopes North - Canadian Border to Lake Chelan
Observation by Eli Nielsen

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: South east aspect. Treed bowl with open patches. 35-40 degree slope

Route Description: skin track along ridge directly above avalanche

Weather: 28 degrees in shade Slope was sunny and wind affected

Snowpack: Blower powder in shaded trees little firmer on sunny slopes firm layer of snow 18-20 inches down

Avalanches: Avalanche triggered remotely. We noticed the slide on our second lap on a slope to the left of our lines in more sun and wind affected area. It broke and slid about 50ft before stopping in dense trees. Crown was around 18-20 inches. Even on the flat ridge above there were cracks in the snow all around.

Dec. 21, 2014, 3 p.m. PST

Region: Stevens Pass
Observation by Ian Nicholson

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Top of Skyline Ridge, E-SE aspect

Route Description: The Meadow is still fairly bare and below 4400ft HS decreased from the previous day. Above 4400ft there was actually a net gain in HS after the rain event and at 4700ft and 5100ft we observed an increase in snow depth of 10-20cm.

Weather: Heavy rain early, tapering off by mid-morning turning back to moist and increasingly drier snow by mid day. Between S1 to S2 all afternoon.

Snowpack: We dug several profiles near the top of Skyline Ridge on a E-SE aspect at around 5100ft. The upper snow-pack consists of 8-10cm of moist snow (4F) overlaying 8-10cm of extremely wet snow (1F). Both of these layers are sitting on the storm snow from the beginning of this last storm (F) that was still surprisingly relatively dry and not near as saturated as we expected to see. Even after the rain event Saturday night and Sunday morning (12/19-20) HS increased at this elevation by 10-15cm overnight from the previous day. We preformed several pit tests on a 28 degree slope, at 5120ft on a E-NE Aspect and observed RB6 EB @56cm fracturing on the old storm snow and a older 2-3cm thick crust. This was the upper of two very close crusts that exist about 55-60cm down. We didn't observe any facets on this layer but did observe large melt forms (likely MFpc). We also observed ECTX, 2x CTM Q2 @ 56, and 3x CTH @56cm Q2 @56 all failing on the same layer.

Dec. 20, 2014, 6 p.m. PST

Region: West Slopes Central - Skagit River to South of I-90
Observation by Ian Nicholson

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: North side of Skyline Ridge, near Stevens Pass

Route Description: The meadow on the front side (South facing side ) of Skyline Ridge was barely ski-able and not awesome even toward the end of the day despite the new snow. There is still a surprising about of brush still exposed and an average of 60cm snow pack in the meadow.

Weather: S1 to S2 all day on a warming trend with obscured or overcast skis. The East winds seem to keep the rain at bay at least until our group left the field at 16:00.

Snowpack: The snow pack gets remarkably thicker from the Skyline Ridge parking lot (4080ft) to the top of Skyline Ridge (5200ft) where at the top we observed an HS of 95cm. On the north side we observed 40cm of new storm snow sitting on top of a pair of 2-3cm thick P hard crusts separated by a 2cm 1F+ layer. Under the crusts was another layer of 4F that was 10cm thick and below that; P to the ground. We dug a pit near the top of Skyline Ridge at 5100ft, with a North Aspect on a 25 degree slope our results were: CTV Q1 (SP)@46cm just below the crust CTM Q2 (RP) @46cm on the same layer CTM Q2 (RP) @46cm on the same layer We didn't observe any recent signs in our location of recent previous wind transport.

Avalanches: No avalanche observations.

Dec. 20, 2014, 3 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by Andy Hill

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Crystal Mt Resort, Silver Basin

Route Description: Up new chair, into lakes, up ridge line, through trees, conservative route selection with hazard avoidance approach due to heavy prec and warming.

Weather: 36 raining (R5) in parking lot, mixed at 5K, heavy snow up to 6K. Wind SE avg 15, max 40. 32 w/ overcast at 6.5K with in/out prec (S5).

Snowpack: Complex. 4 layers in play: 10cm storm, 30cm previous, 60cm weekly. Faceting and temp variants down to 60cm. Snowpack 100cm

Avalanches: whooping (collapsing 60cm facet layer) in places and cracks on slopes. Older naturals.

Dec. 20, 2014, 12:45 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by Nick Drake

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: North aspect, 25-35 degree slopes, upper portion near the end if tree line.

Route Description: North aspect, approaching the end if tree line and extending well below. Slides observed lookers right of gun barrel

Weather: Moderate winds, mostly westerly in valley. Moderate to heavy snowfall. Did not monitor temps, but did not sense a large rise.

Snowpack: Cohesive storm slabs, poor bonds between store layers. Apparent low density snow in areas below storm slabs.

Avalanches: Found natural release with 18-24" crown ~200 feet across. Descending ridge I worked left to next high point across a shelf. Sympathetically triggered 8" slab, minimal run out due to low slope angle. Next skier trended right away from convex roll above concave slope which released. While skiing straight his pressure released slab across slope to where mine had been, around 12" and 30' wide. This released a second slab, stepped down further up slope to apex of convex roll, 24-30" crown to rain crust. Appeared to be all new storm layers. Similar results all the way down slope, well in to dense trees. Compression and shooting cracks on even flat terrain in woods.

Dec. 20, 2014, 11 a.m. PST

Region: Mt Hood
Observation by John Miller

Did you see any avalanches? Yes
Did you trigger any avalanches? Yes
Was anyone caught in an avalanche? No

Area Description: Timberline Lodge - treeline

Route Description: Travelled up the skin track past the lower hut to tree line before the wind conditions and scoured snow stopped up.

Weather: Windy and wet snow

Snowpack: hard frozen layer with new storm deposit on top. Avalanche was wind cornice.

Avalanches: Made some laps around the lower mountain. Triggered a cornice fall about 50-75' wide and 8-10" deep. Windward side of a gully

Dec. 20, 2014, 10 a.m. PST

Region: West Slopes North - Canadian Border to Skagit River
Observation by Oyvind Henningsen

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: North facing slope outside of Baker Ski Area just below Austin Pass. Elevation 4727

Route Description: Artist Point Tour

Weather: Snowing, overcast, light wind, temp around freezing.

Snowpack: 160cm snow depth, compression test 3 tap planar failure at 107cm, 1 cm above crust

Avalanches: Baker Patrol reported 25cm slab release on Pan Face during morning control work.

Dec. 19, 2014, 12:30 p.m. PST

Region: West Slopes North - Canadian Border to Skagit River

Did you see any avalanches? Yes
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: This is Nick at NWAC west. Got a text from a buddy, named Spence Lee with this: Pan face at Mt Baker ski area. West/southwest aspect. Human triggered by group in front of us. No burial. Looks like it slid down to veg layer - bad vis... ~50cm deep x ~50m across.

Route Description: Pan face Mt Baker

Weather: Snowing

Dec. 16, 2014, 5:45 p.m. PST

Region: West Slopes South - South of I-90 to Columbia River
Observation by Dallas Glass

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Area Description: Paradise, Edith Creek drainage. Base of Golden Gate Bowls

Route Description: Left from Paradise Inn continued NE to Edith Creek, then headed SE towards Golden Gate. Overlooking Mazama Ridge skied south to the park road.

Weather: Overcast around noon with light snow showers. Some clearing later in the afternoon. Mild temperatures. Day time snow 0.5-1".

Snowpack: Six inches of recent snow over a very firm base. Low coverage in wind scoured areas and at lower elevations (<5200')

Avalanches: None

Dec. 15, 2014, 12:18 p.m. PST

Region: East Slopes North - Canadian Border to Lake Chelan
Observation by josh cole

Did you see any avalanches? No
Did you trigger any avalanches? No
Was anyone caught in an avalanche? No

Snowpack: Widespread SH observed. Predominantly size 2.5-3. Observed up to ridgecrest on northerly aspects on 12/14. On 12/15 above ~6000', most SH had been destroyed by wind, although some remained below newly formed thin windslabs. As part of an AIARE 1 course, we dug at ~6200' on a northerly aspect. The most pertinent results were CTM14 RP down 24cm running on 1mm rounding facets. We also had a RB4 on this layer. HS at the top of treeline was 140-180cm, and averaging around 100-120cm at treeline

Avalanches: no new slides observed. Wet loose slides of 2-4 days old were observed running on steep rocky solar aspects.