Observation: Summit

Location: Treeline on the ridge south of Tenderfoot

Route & General Observations

Up Tenderfoot and across creek to south of Tenderfoot to treed slope. Through trees on slope angles below 30 degrees.

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?No
Collapsing (Whumphing)?Yes
Cracking (Shooting cracks)?No
Observer Comments

Collapsing in open glades. Slope angles below 30 degrees.

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

Overcast, mid 20's F, S<1,winds light NE. 5cm new snow overnight.

Snow surface

New snow up to treeline. Light wind crust above treeline.


Hand Shears Moderate +/v down 15cm W aspect @ 2700'
CT8RP +/v down 10cm NW aspect @ 3200'
CT11SP V down 50cm NW aspect @ 3200'
ECTP21 v down 50cm NW aspect @3200'
The collapsing was caused by a buried surface-hoar/ facet/ buried surface-hoar sandwich. The slab consisted of (top to bottom) 10cm new snow, BSH (MLK),and 39 cm 1F rounds. Below the weak layer:110cm of P rounds with 20 cm of large, rounding baisal facets. Total HS 180 cm

Photos & Video
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