Observation: Summit

Location: Tenderfoot to 3200'

Route & General Observations

Ascended W ridge to 3200′

glide cracks along SW aspect of Roaring Ridge

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 Wet loose avalanches on South aspect.
At 1:30pm observed rollerballs moving on South aspect.
Collapsing was reported by another group on the ridge, but we didn't experience any collapsing
Large cornice fall triggered loose snow

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

Mostly Sunny
Winds: 10 g20, becoming Light by afternoon
No Precip

Snow surface


1300 ~10" wet snow on dry snow
1600 ~7" wet snow on dry snow
2000 ~4" wet snow on dry snow
2300 ~1" dry snow on 1-2" m/f breakable crust
3000' - 1" breakable m/f crust on leeward side of Ridge, 8-12" heavy wind drifted snow


Pit at 3100' - Dug a pit on a wind loaded (SW) side of ridge. Top 35 cm was 'upside down' with denser snow sitting on weaker snow below. Within top 35cm we found moderate strength with no propagation potential. Layer changes were composed of precip particles and rounds and no persistent grain types were found. See photo diagram for more details.

Photos & Video
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