Observation: Summit

Location: Tenderfoot to 3000'

Route & General Observations

Ascended West Ridge of Tenderfoot to 3000′ on Ridge. Dug a pit on a WSW aspect and didn’t find any persistent grain types in the top 130cm of snow.

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)?No
Cracking (Shooting cracks)?No
Observer Comments

Two recent glide releases near the SW aspect of Manitoba. Recent cornice fall that trigged D1 slabs on SW aspect of Butch.

Weather & Snow Characteristics
Please provide details to help us determine the weather and snowpack during the time this observation took place.

Mostly clear w/ scattered cloud cover
Temps: high 20's F to mid 30's F in the sun
Calm winds
Light precip in the AM, no precip in the afternoon

Snow surface

2" new snow at all elevations/aspects

1300' - new snow on surface hoar on a supportable crust
1400' - 2600' - new snow on surface hoar sitting on 6" of low density snow
Above treeline to 3000' - snow was more wind affected, variable surfaces/2" new snow


Probed around at 2800' and snow depths varied from 100cm on NW shoulder to 300+cm on SW shoulder

Pit at 3000' - WSW aspect, 33* slope, HS=310cm - Found many layers of wind compacted old snow, moderate to high strength, no propagation potential, and no persistent grains were found in the top 130cm of snow. Only notable failure was in the top 25cm of snow. See pit diagram for test scores.

Photos & Video
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