| Recent Avalanches? | Yes |
| Collapsing (Whumphing)? | Yes |
| Cracking (Shooting cracks)? | No |
Observation: Summit
Location: Tenderfoot
Standard route to 2800′. Looking for avalanche activity in this zone and checking out snow depth and snowpack structure.
Obvious signs of instability
Observer Comments
Recent small wind slabs on Butch and Summit Peak.
Observed one large crown in a west facing basin of the Moose mtn ridge that broke down off of the ridge and looked deep (6+ feet).
A couple small whumpfs in the lower meadow (2000').
Weather
Broken skies
Temperatures in the 20°Fs
Light south winds
Snow surface
3" of soft new snow. Wind effect was noticeable at treeline (2500') with 2-4" wind crust.
Snowpack
Average 2-3' deep.
Hand pit at 1600' found buried surface hoar down a foot (see photo).
Dug 2 pits @ 2000', HS:100, Found a layer of buried stellars down 50 cm in one of the pits and an obvious layer of buried surface hoar down 70 cm and then small facets at the ground in both. HS: 100 cm. Pit #1 CT 16, CT 17 SC on buried stellars, ECTP 13 on buried surface hoar. Pit #2 CT 14, CT 12 on buried surface hoar, ECTP 16 on buried surface hoar, very thin layer of basal facets not reactive
Dug 2 pits @ 2450', both HS:110 with similar structure, buried stellars down 50 cm CT 17, buried surface hoar layers down 60 cm and 80 cm (no results on either layer in either pit,) 90 cm down a 5-10 cm melt freeze crust over basal facets. CT 14, CT 12, ECT 13, ECTP 20 in basal facets. Facets were small 2-3mm. There was also a thin layer of facets above the melt-freeze crust but tests were not reactive on this layer.
Dug 1 pit @ 2800', HS: 100. 20 cm of facets at the ground under 1F to Pencil hard wind slab. CT 8, CT 12 in facets. Facets were slightly larger and looser than pits below.
Buried surface hoar @ 1600'
Pit @ 2000'.
Pit wall buried surface hoar down 50 cm
Buried surface hoar 2000'
Pit @ 2450'
Basal facets @ 2450'
Butch SW with small crown along ridgline
Colorado Peak wind effect
Debris visible on Summit Peak east side