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Recreational Observation

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.

Jan. 19, 2015, 2 p.m. PST

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

Area Description: Stevens Pass, Skyline Ridge.

Avalanches: We did not observe any recent avalanche activity.

Observation by Ian Nicholson

Latitude: 47.787203

Longitude: -121.010010

Did you see any avalanches? No

Did you trigger any avalanches? No

Was anyone caught in an Avalanche? No