Observation: Hatcher Pass

Location: Lost and Found Wall

Route & General Observations


IMB towards Friendship Pass, Crown investigation near Birthday pass, then ascend the Lost and Found Wall, Descend the Found Couloir on Granite Peak.

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)?Yes
Observer Comments

Many recent avalanches, new snow failing on old snow, D2, West > North > East, in elevations band 4,000' to 4800', likely occurred 1/25 to 1/28, all had new snow dusting on bed surfaces and debris.
Collapsing localized, generally small
Cracking localized, generally small, <15' long cracks
Natural dry loose avy activity with direct solar through the day, mostly triggered at rock bands, D1, max D1.5

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

Clear, 1.7C@4800', Calm
25cm 1/28 snow storm

Snow surface

widespread SH 2-4 mm below 4500', 6mm on ridgelines at 5000'
low density powder less than 10% density


Recent avalanche activity on new snow/old snow boundary
Instability testing focused on new snow/old snow boundary as well as basal facets in a very weak snowpack consisting mostly of soft facets in a crown profile.

Photos & Video
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