| Recent Avalanches? | No |
| Collapsing (Whumphing)? | Yes |
| Cracking (Shooting cracks)? | No |
Observation: Summit
Location: Summit, Birch Trees
Toured up to 1900′ on the Northeast shoulder of the “Birch Trees Run” or “Japan Trees” run with the AAS Pro 1 class to dig snow pits and observe snowpack. On the tour up we observed 1 collapse around 1500′ on the skin track.
We dug pits on an East facing meadow at 1950′ with variable results
Obvious signs of instability
Observer Comments
Whumphing observed while skinning up around 1500'
Weather
Overcast around 11:40 am, S1, Light wind SW, smooth snow surface, -3C Air temp. New snow, 10"
Snow surface
Smooth, good ski quality. 55cm Boot pen, ski Pen 25cm.
Snowpack
HS:100cm
Full pits @1950' East facing. 28deg
2 major layers of concern at Dec 1 crust with facets above layer, and basal facets at base of snowpack.
Test results: CTV SC on Base Basal Facets, ECTP22 on 12/1 layer, PST 44/100 END 20201201
Snowpack findings: Poor structure overall in snowpack, low strength, and moderate propagation.