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Observations

Feb. 22, 2018, 5 p.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90
Observation by Brenda Hollon

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

Area Description: Blewett Pass, near 4480ft.

Weather: Broken sky. Light winds. No blowing snow. Air temp -10C.

Snowpack: HS 59cm. Ski pen 23cm. Snow pit on ENE aspect. Tests: CTN, ECTN. Crust is 39cm down from surface and 2 cm thick.

Avalanches: None observed.

Feb. 22, 2018, 11 a.m. PST

Region: Stevens Pass
Observation by Brenda Hollon

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

Area Description: Grace Lakes, 4847 ft.

Weather: Thin overcast sky. No snow. Calm winds. No blowing snow. Air temp -10C.

Snowpack: HS 393cm. Ski pen 14cm. Boot pen 39cm. Snow pit on NW aspect. 2/13 crust down 92cm from the surface. Test results: CT16 SC down 92cm, CT11 SC down 92cm, ECTX.

Avalanches: None observed.

Feb. 21, 2018, 6 p.m. PST

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

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

Area Description: Yodelin.

Route Description: Lapped North facing terrain up to 35 degrees from 5,000' to 4400'.

Weather: Cloud cover increased all day, lt. snow in afternoon. High-9c, Low-15c. Light West winds in afternoon at ridgetop.

Snowpack: Ski tests showed no signs of instability up to 35 degrees. Surface snow is faceting and surface hoar (some very large at ridgetop, up to 15mm) is widespread. The SH is flat and sitting on decomposing stellars and near surface facets (see photo) Ski quality is good.

Avalanches: None. South Face of Lichtenberg, Jove and Skyline showed no signs of an avalanche cycle. The solstice tree gullys had debris low in one of the paths that seemed small from a distance.

Feb. 20, 2018, 5 p.m. PST

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

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

Area Description: Dirtyface

Weather: Calm to light winds, light snow sporadically falling. Visibility limited to about 1 mile.

Snowpack: Heard and felt two whumphs on East aspect on a 28 degree slope at 5000ft. One was a fairly large section of snow, roughly a 40ft radius around me. These were happening on a layer of buried facets over the 2/5 crust, found 18-24" down from the surface. This layer seemed more pronounced, the grains slightly larger than what I have been observing on Stevens Pass the past few days. We kept our travel limited to slope angles below 30 degrees and stayed on ridges when possible. Ski quality was excellent.

Avalanches: None observed but limited visibility and previous snow/wind likely covered up lots of evidence from last weekends storm.

Feb. 20, 2018, 5 p.m. PST

Region: Stevens Pass
Observation by Joshua Hirshberg

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

Area Description: Skylight Area

Route Description: W-N-E-S aspects, 4000ft-5500ft. Traveled extensively on slopes near and below treeline.

Weather: Broken clouds becoming overcast, but thin. Very light snow starting at 1p. Light wind w/ moderate gusts E and NW. No blowing snow

Snowpack: Found wind drifts and smaller cornices from the weekend. They are getting harder to trigger. Some softer, more recent wind drifts were easier to trigger tho isolated to near ridges close to the crest. Found early Feb crust w/ facets above on most slopes ~75cm below the surface but over 1 meter deep on wind affected slopes. No collapsing or signs of instability. We avoided open slopes >35°, big enough to produce large avalanches.

Avalanches: None observed

Feb. 20, 2018, 4:30 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 trees

Route Description: Toured in via Commonwealth and through the lakes. Exited via Commonwealth. We stayed in mellow open or treed terrain and enjoyed great skiing.

Weather: Overcast with occasional moderate snowfall. No wind.

Snowpack: Sun moistened snow from Monday had dried out overnight.

Avalanches: Surface sluffing has calmed since Monday. Saw a natural crown that had released on a steep SE aspect approx 5000' (marked by pin). Crown was 2 to 3' deep and had propagated widely, but looked to be at least a day old.

Feb. 20, 2018, 2 p.m. PST

Region: Stevens Pass
Observation by Tom Whipple

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

Area Description: Delbert's Ridge, W of Steven's Pass

Route Description: N and W aspects 5,300'-4,200'

Weather: OVC with some flurries, L-NE wind

Snowpack: N aspect at 5,000', 33 deg slope, found a 3 degree TG dn 30-40 cms, HS>400. CT12 dn 35 (RP) x2, CT17 dn 17 (RP) on GPL Sz 2-4, ECTN12 dn 35 (PC). WNW aspect, 4,440', 35 deg slope, HS 245. Same result on GPL layer, DTT20 dn 80 (PC) on the NSF just above the 2/13 crust, ECTN10 dn 20 (PC). Found the PWL unreactive at both sites, but stiff windslabs sometimes produced shooting cracks while traveling. Major near surface faceting found with the cold air temps. Did not observe surface hoar forming.

Avalanches: none recent, one 8" crown obs on N slope just below cornice, probably during rapid loading on the 2/17 hurricane

Feb. 20, 2018, 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? No
Was anyone caught in an avalanche? No

Area Description: Bagley Lakes Drainage

Weather: clear, light winds

Snowpack: Softer, 4F, snow was observed both over and between crust layers on a SSW slope above treeline. Some small, .5mm rounding facets were observed in the these layers but they were few and far between. Deep tap tests produced breaks with 20+ loading steps.

Avalanches: Observed some small, D1.5, skier triggered slides on many aspects. All of these ran in surface snow, nothing observed ran on the facet layer above the 2/8 crust.

Feb. 20, 2018, 11:30 a.m. PST

Region: East Slopes North - Canadian Border to Lake Chelan
Observation by Observations For Money

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

Area Description: Trees glades within forecast area

Snowpack: Noted instabilities Availabe for cash

Avalanches: Pro skier near miss

Feb. 19, 2018, 4 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 Trees

Route Description: In via clear cut to knob, out via Commonwealth after a few laps.

Weather: Flurries with sun

Snowpack: Dug a quick pit on the way up knob, where we found 2.5' of wind affected snow above last week's crust. Hand shear test revealed an easy failure on this layer. No whumphing or obvious stability other than surface sluffs which were building momentum easily in steeper trees. Observed other parties stepping into significant avy terrain from afar without incident. Ski quality excellent, boot top powder on Saturday's denser layer.

Avalanches: Some recent loose dry naturals from steep terrain.

Feb. 19, 2018, 2 p.m. PST

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

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

Area Description: Tronsen Meadows, Blewett Pass

Route Description: Tronsen meadow trail

Weather: Temperature in upper teens in the shade, upper 20s in sun. Clear skies becoming scattered later in the day.

Snowpack: Ts 25cm @ 4400'. 20-23 cm new snow over faceted grains. Compression test and shovel tilt test yielded no results.

Avalanches: None observed

Feb. 19, 2018, 2 p.m. PST

Region: West Slopes North - Canadian Border to Skagit River
Observation by Jason Griffith

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

Area Description: Wells creek

Weather: Sunny

Avalanches: Saw debris from recent avalanche. Looked to have occurred on 2-18 or so. Bed surface partially filled by wind transport. See photo for scale. NW facing slope 5400 feet in Wells creek.

Feb. 19, 2018, 11:45 a.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90
Observation by Chris Mayer (3A Pro-1)

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

Area Description: Salmon La Sac

Route Description: Snowmobile observation above Gallagher Lake, towards Hawkins Bowl 47.44074N, -120.9939W

Weather: Scattered clouds, no observed precipitation. Air temperature -9C. Light Winds out of the WNW.

Snowpack: The snowpack in this area consisted of 72cm of new snow atop an older crust. Within that new snow, there was a weak interface, 47cm down that yielded the following results: CT12SC@47 ECTP15@47 The snow was well consolidated below the crust.

Avalanches: None Observed.

Feb. 19, 2018, 11:45 a.m. PST

Region: East Slopes Central - Lake Chelan to South of I-90
Observation by Chris Mayer (3A Pro-1)

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

Area Description: Salmon La Sac

Route Description: Snowmobile observation above Gallagher Lake, towards Hawkins Bowl 47.44074N, -120.9939W

Weather: Scattered clouds, no observed precipitation. Air temperature -9C. Light Winds out of the WNW.

Snowpack: The snowpack in this area consisted of 72cm of new snow atop an older crust. Within that new snow, there was a weak interface, 47cm down that yielded the following results: CT12SC@47 ECTP15@47 The snow was well consolidated below the crust.

Avalanches: None Observed.

Feb. 19, 2018, 11 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? No
Was anyone caught in an avalanche? No

Area Description: Lake Ann area in Mt Baker area

Weather: sun; cold (single digit or teens F depending on sun/shade); light wind

Snowpack: Pit on Slope: NW aspect, 35 degrees at 4400ft Lat/Long = 48.834, -121.652 Overall pit observations: 1. Consistent settlement/fracturing 10-20 cm down on a zone of lower density snow. We felt this layer skinning (the second person through often broke through this layer). 2. Consistent breaking at 70cm on a thin layer of small facets (no rounds present) 3. Consistent breaking at 90cm on a thin layer of small facets above the Jan 8 crust (not a big facet sandwich; no rounds present) Shovel ShearTest: • Easy at 70cm, q2 • Easy at 90cm, q2 (above Jan 8 crust) Compression test: • CT3, 10 – 20 cm, q3 (zone of lower density snow) • CT11, q2 at 70 cm • CT 23, q2 at 90 cm (Jan 8 crust) Extended Column Test: • The layers described above all reacted at similar counts as the compression test (CT 3, 13, 21 respectively), but none propagated the length of the column.

Avalanches: Only saw one recent avalanche, a point release off a cliff that trigger a D1.5 slab that ran on the Jan 9 crust

Feb. 19, 2018, 9:30 a.m. PST

Region: Olympics
Observation by Sam Luthy

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

Area Description: Maggies Pullout to Sunrise Ridge

Route Description: Travel from Maggies along sunrise ridge to west shoulder of angeles

Weather: Sunny, clear and cold 4 degrees F in the morning. Some afternoon clouds.

Snowpack: From the 1/13 crust there is a preserved 4-5cm layer of 0.5-1mm facets caped by 1cm of 3-4mm buried surface hore. 30-50 cm of right side up storm snow is on top of the surface hore with more in wind deposition areas. Road side at Maggies on a 24 degree SE slope both CT 21 SP and ECT 22 SP were observed on the surface hore. Two quick pits on S aspect along the route to sunrise ridge showed the facets above the 2/13 crust but not surface hore present. Another pit was dug on a W aspect at 5500ft just off the top of Sunset ridge. Here the snow was significantly thinner from the strong NNW winds on 2/17. Typical cornices in this area were striped down to firm snow and ice. The preserved facets and surface hore were still present with only 32cm of new snow above. CT 7 SP and ECT 8 SP were observed here.

Avalanches: Two natural crowns were observed on SE aspects above the switchback trail parking area. Unknown depth and surface. A large snowboarder trigger slab released on a E aspect above maggies parking were "maggies face" transitions to the tree and glade terrain of the "wrinkles". Crown was reported to be up to 2 ft and likely triggered on the surface hore layer. No injuries. Our party triggered no avalanches during today's tour.

Feb. 19, 2018, 8 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? No
Was anyone caught in an avalanche? No

Area Description: Diamond Head and Windy Knob

Route Description: Diamond Head, east; Windy Knob, north

Weather: Calm, light W wind, -6 to -14 C. Coldest below 5k'.

Snowpack: In sheltered terrain - 10-20cm SS over the recent early-February freeze-thaw crust. Significant wind and cross loading had occurred near ridgeline and snow was scoured to the recent crust at a variety of aspects. Preserved deep facets were present but unreactive. We did not observe near surface facets around the crust. Wind-loaded snow near shallow trigger points are in play across the Wenatchee Mountains this week, although most potential seems to be R1D1 with limited wind transport since Saturday/early Sunday. Widespread cracking in the SS above 5400' early in the day on Diamond Head before it settled.

Avalanches: Diamond Head ran naturally a couple times overnight from 18 FEB to 19 FEB. Crowns were 16-24cm wind loaded areas around shallow rocks near 5800' and ran on the melt-freeze-rain crust. We recut the crown nothing broke deeper than recent, shallow wind slabs on the crust. Ski cuts in open, wind-loaded 30-degree+ slopes were not reactive.

Feb. 18, 2018, 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

Weather: There was lots of wind transport at ridge lines.

Snowpack: We heard/felt whumphing while standing on the flats above the entrance to Swift Creek. Another party also observed this in the same area at

Feb. 18, 2018, 1 p.m. PST

Region: West Slopes North - Canadian Border to Skagit River
Observation by Jason Speer

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

Area Description: Austin Pass, east of the Lake Ann TH, very close to the crest of the pass. I felt three very notable sudden collapses (whumpfing) of the snow pack during a Rec1 class. Other groups nearby also reported similar collapses in the wind-shaped snow features along the treeline at the top of Swift Creek.

Feb. 17, 2018, 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

Snowpack: Dug a snow profile at 4460’ above Bagley Lakes on a NW aspect. Did not observe facets above the early February crust. Observed fist density snow approx. 30-80cm down from the surface, below a stiffer 1F layer from 10-30cm. Most interesting test result was an ECT P 12, 40 cm down from the snow surface. Also had a CT 11, RP, down 71cm.

Avalanches: We triggered a D1.5-R4 wind slab at 4420’ on a steep NE aspect above Bagley Lakes. We triggered it while traveling on a slope less than 25 degrees; the fracture propagated and the avalanche occurred on an adjacent steeper slope (in the attached photo, the slide was triggered from the left-hand side, just out of sight of the edge of the photo). The slab was approximately 80’ wide and ran approximately 40’. The crown depth ranged from 6-12”. It appeared to run on storm layers.

Feb. 16, 2018, 2:30 p.m. PST

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

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

Area Description: Crystal BC NNE face at about 6300’

Route Description: NE side of the King

Weather: The day started cool with 12-17” of blower pow. Winds were breezy atop the king. Later in the day the sun came in and out and temps increased. South facing slopes ended up with a thin crust.

Snowpack: Areas of blower and areas of stiffer windloaded snow.

Avalanches: Triggered a small slide (big enough to bury a dog) on a slighter steeper 35-38 deg small convex roll feature. Had enough speed to ski off it. Maybe 30’ wide in sheltered terrain all within storm snow. Slide ran about 200’ with decent energy. Could’ve been problematic if carried in the trees. Took a quick look near the crown and found what looked kinda like a small layer of sugary snow on the early Feb crust. Obvious results from Patrol control work in the area. This one was human triggered. Of the 15” maybe the bottom 5-6” Had slab characteristics with upper 10” mostly lacking cohesion. Forecast seemed right on. Beware out there. The skiing is good, forecast seemed

Feb. 15, 2018, 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? Yes

Area Description: Stevens Pass Skyline Lake Environs

Route Description: SSW facing 2000Ft 35 to 45 degree pitch.

Weather: mostly cloudy. lightly snowing. temperature profile is 25 base / 21 ridges. 1022mb’s with the 5000’ winds blowing 5-10 out the west.

Snowpack: 5-9 Inches of new snow on frozen bed surface. Mostly low density, however sun breaks and wind changed snow density through the day on some specific isolated S to SW aspects

Avalanches: wet loose slide running 600ft from approximately 5800ft to 5200ft stopping on a bench. Running very quickly on frozen bed surface. secondary hang fire also initiatiated and ran full length over the top of the primary slide and ran quickly to the valley floor. 1 Skier partially buried and was able to self extracate before secondary slide initiated.

Feb. 15, 2018, 10 a.m. PST

Region: Snoqualmie Pass
Observation by Chris Meder

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

Area Description: Snoqualmie Pass, Mt Catherine, elevations 2800-5000', N and SW aspects

Route Description: Ascended Hyak and up through clear cut to north side of Mt Catherine old growth

Weather: Partly cloudy with sun in the morning, becoming mostly cloudy in the early afternoon with light snow starting around 1 PM. Winds calm to light from the west.

Snowpack: We found 15-30 cm of storm snow above the 2/13 crust. The crust is firm and under the new snow made for tricky travel conditions. Bonding of new snow to the crust surface is poor as reported elsewhere, but seemed to be improving. At lower elevations below about 3200', we noted some stiffening of the new snow surface (5-10 cm) likely due to warmer temps yesterday. At higher elevations in open areas, we found pockets of 15-20 cm slabs which would initiate above the skin track but would not propagate beyond skis. In treed terrain, surface conditions were mostly unconsolidated new snow. Also found some small surface hoar formation in open, wind sheltered areas.

Avalanches: Saw several small D1 loose dry releases from either yesterday or early today in steep treed terrain. We were not able to initiate any of these on slopes up to 35deg.

Feb. 14, 2018, 1:32 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: NE couloir above snow lake divide , Snoqualmie Pass.

Route Description: Skinned standard route to snow lake and up to divide. Skinned and then booted to ne ridge of chair peak. Transitioned there and skied.

Weather: Ovc/s-1/ -1c occasionally obscured.

Snowpack: 20cm new snow above 2/8 crust. Upside down snow profile above crust, >1mm facets at crust, stellars, graupel on top.

Avalanches: 1100 NE couloir above snow lake divide, D1.5 r4 ARu SS, NE 4500’ 40deg, OP/SHF 20180208, F. Slope broke ~50ft below ridgeline and propagated surprisingly large in non wind-effected, seemingly unconsolidated snow.

Feb. 14, 2018, 11 a.m. PST

Region: Snoqualmie Pass
Observation by Michael VanderBeek

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

Area Description: Just east of the pass. Summit East

Route Description: Skinned and skied trees at Summit East.

Weather: BKN skies, light snow, just above freezing at base just below freezing at ridge. Snow started below the pass. Calm winds from SSW.

Snowpack: HS 190 20-25cm new on old crust from last warm cycle. Seemed to be bonding well in sheltered terrain, ie skinning in new snow was efficient with out blowing out the track constantly. Snow was medium density. About 100’ below ridge had slight density change in snow at 3600’. Possible wind effect. Skin track test showed shallow wind slab 20cm breaking 5 cm above crust. All other hand pits and test slopes below 3600’- nothing to note. Keep thinking snow!

Feb. 13, 2018, noon PST

Region: West Slopes North - Canadian Border to Skagit River
Observation by Jack Gavin

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

Area Description: Mount Herman in Baker backcountry

Route Description: Up the southwest side of Herman from Bagley Lakes. Down the north side and over to the base of the Stone Man Couloir. Booted up and skied the E facing couloir.

Weather: Scattered clouds throughout the day, light winds.

Snowpack: A lot of different surface conditions currently present. The east side of Herman was the most interesting with prevalent windslab ranging from .5''-4'' in size. Some wind slabs were supported by a firm crust and other areas revealed a layer of sugary facets underneath. Wind slab was reactive on steep slopes. Currently uphill travel conditions (and downhill) are pretty heinous.

Avalanches: Multiple small windslabs were triggered, sliding easily on the bed surface.

Feb. 12, 2018, 2 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: Delbert's Ridge just west of Stevens Pass.

Route Description: Skied various W thru N aspects from 3900' up to 5400'.

Weather: Clear nd cold. SW aspects had barely corned up by 230pm.

Snowpack: Avg HS settlement around 25% near ridge top and 30-35% BTL since 2/2 rain event. HS at 4600' 240cm. General surface snow condition on NE-W aspects were a strong rain crust with 2-5cm of 1.5mm NSF on top. NE-NW aspects had SH to 4-8mm on top of these facets mostly laid down.

Avalanches: A few older glide avalanches to D2 on SE aspect heather slopes were seen likely released just before the last snowfall.

Feb. 11, 2018, 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: Mission Ridge, Clara / Marion Lake Basin

Route Description: Variety of aspects between 5500' and 6400'

Weather: A few clouds. Light winds from NW. Mid 20's.

Snowpack: We were practicing tracking a layer over terrain with targeted observations. At 5400' on an east aspect we located a buried surface hoar (SHxr) layer above a crust which was 50cm up in a 105cm snowpack. This layer gave us ECTP23. The overlying snow was a knife to pencil hard collection of rounds, melt forms, crusts and rounding facets and pen foot was 0cm. We found this layer in 4 out of 8 locations we looked up to 6400', generally on N thru E aspects, showing similar ECT results. Snow heights ranged from 70-175cm and the surface hoar was usually close to the middle of that. In high, shady, wind sheltered locations boot pen increased to 30cm and snow above SH was one finger to four finger hardness. The the surface of these same protected areas had new surface hoar forming.

Avalanches: Non observed. Within the last few days snow machines had done some slope testing on steep, firm NE slopes of Mission Peak with no results.

Feb. 11, 2018, noon PST

Region: Stevens Pass
Observation by Summer Richardson

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

Area Description: Lichtenberg Mountain area, NF 6700, near smithbrook TH.

Route Description: On February 11th, dug a pit on the south facing aspect of the ridge facing Lichtenberg, just above NF 6700 forest service road. Skied good corn descent after this from above the switchback of NF6700 to the road below, both on the 10th and 11th of February.

Weather: Blue skies, nearly no wind. Southern slopes were in sun most of the day.

Snowpack: Layer of crust measuring 30cm deep overlying soft corn. There is soft corn above the crust on southern aspects in the sun. Pit results: Surface: Corn, just below this there is a consolidated ice crust layer to 30cm depth, pencil to finger penetration Underlying this layer there is four finger penetration at 30cm, to fist penetration at 40cm. Testing: CT15, ECT 29 with propagation across the column at 30cm depth. Slope: 185' aspect, 35' slope, fairly representative of the terrain above the pit. Skied out on good corn in lower angle terrain with sparse trees. Take home point was that this would be hard to make slide, but if it did it would be large given propagation and the weight of the crust layer.

Avalanches: Numerous days old large avalanche debris seen throughout the tour on south facing slopes. No avalanche activity was observed during the tour.

Feb. 10, 2018, 9 a.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: Hairpin area of WA Pass

Route Description: We toured into the Hairpin Valley area and skied various aspects at and above treeline, mostly ENE facing bowls but also an almost straight S facing open slope.

Weather: Clear. Cold in the shade and warm in the sun. Increasing winds with gusts e25mph on ridgetops; generally seemed to be from WNW or NW.

Snowpack: Fleeting amount of dust on extremely hard frozen snowpack down lower; similar hard crust underlying generally shallow windslab and hard wind-affected surface snow up higher. Skiing was generally not optimal due to winds having either scoured or loaded various aspects around the compass and due to hard frozen tracks, especially lower down. Larger pillows and slabs were evident in crossloaded and lee areas and were avoided. Where present smaller slabs were generally not reactive, but see avalanche comments. Large cornices loomed over many slopes, with evidence of buildup in both directions on E/W oriented ridges from varying winds. Ample wind transport was evident from a NW direction later in the day.

Avalanches: Many cornice falls were evident especially from E facing lee slopes, some quite large. Some small loose wet/point releases and rollers were evident on solar slopes. One skier in our party triggered a very small (20ft wide/2-3" deep) windslab that propagated above a very steep rollover, giving evidence that at least some smaller pockets of windslab were still reactive.

Feb. 10, 2018, 9 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: Chair Peak environs.

Route Description: Destination: Kaleetan Peak Route: Reverse circumnav Chair Peak

Weather: Mostly sunny with a few passing clouds.

Snowpack: Morning: Blower 4-6 inches on most aspects. Bryant Col to Melakwa lakes was extremely fluffy 4-6 over a supportable crust. Very fun descent. Midday: South facing slopes, specifically Kaleetan, had warmed but still pleasantly skied. Afternoon: Slopes that received morning sun had refroze and became treacherous. The ski from the snowlake divide to the Ski Area exit run was less than enjoyable. Overall: We were surprised by the quality of snow. Cold temps took care of snow on most aspects. There was a high volume of people out today. At least 4 other parties summited and skied Kaleetan successfully. With things being stable other hazards presented themselves. Below 4000 feet the supportable crust becomes unsupportable if you are booting. We used crampons, ski crampons, and ice axes for assistance. Lots of slide debris to manage and some low snow pack features are showing, holes, waterfalls etc. Particularly the waterfall run from chair peak lake to snowlake is currently at full spicket mode. If it warms considerably for a period of time that run may degrade. Currently it is a short but technical ski around those falls with debri everywhere. For a more relaxed run climb the knoll above chair peak lake for about 100 feet and ski the more mild pitched slope that falls below Roosevelt.

Avalanches: None observed. Lots of debris from the previous rain event.