Observation: Summit

Location: Tenderfoot

Route & General Observations

Standard route to 2800′. Looking for avalanche activity in this zone and checking out snow depth and snowpack structure.

Red Flags
Red flags are simple visual clues that are a sign of potential avalanche danger. Please record any sign of red flags below.
Obvious signs of instability
Recent Avalanches?Yes
Collapsing (Whumphing)?Yes
Cracking (Shooting cracks)?No
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 & Snow Characteristics
Please provide details to help us determine the weather and snowpack during the time this observation took place.

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.


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.

Photos & Video
Please upload photos below. Maximum of 5 megabytes per image. Click here for help on resizing images. If you are having trouble uploading please email images separately to staff.