Avalanche: Hatcher Pass

Location: Road Corridor

Route & General Observations

Post 2/26 Storm Observations
Several natural storm slab and wind slab avalanches on mostly SE, S, SW aspects 2500′ to 4000′. Most avalanches appear to have failed on new snow/old snow interface. One low elevation (2500′) W aspect slab failed naturally below the Valentines Storm layer on persistent weak layer on crusts.



Avalanche Details
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Trigger NaturalAvalanche Type Soft Slab
Aspect SouthElevation 3500ft
Slope Angle 38degCrown Depthunknown
WidthunknownVertical Rununknown
Avalanche Details

Multiple soft slab natural avalanches D1-D2 observed that went mid-storm 2/26.
Several dry loose avalanches.

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

Recent avalanches. Significant snowfall 2/26 1am- 7am = 10"-12" new snow. Temperatues increasing throughout storm resulting in upside down snowpack.

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

12" plus new snow recorded at IM 2/26 . Winds G16-32 SSE,S, SSW then switched to N throughout storm.

Snow surface

New wind crusts on many surfaces from varying winds N through SSW during and after storm. Upside down snowpack from 2/26 storm.

Photos & Video
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