Avalanche: Hatcher Pass

Location: Upper Glades/Japanese Trees

Route & General Observations

Toured from the upper Japanese Trees parking lot to 3200 ft. Conditions were thin and powdery until around 2500 ft, where snow depth increased significantly.

Avalanche Details
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Trigger UnknownRemote Trigger Unknown
Avalanche Type Soft SlabAspect Northeast
Elevation 3100ftSlope Angleunknown
Crown Depth 13inWidth 40ft
Vertical Run 90ft  
Avalanche Details

The avalanche slid on the wind-loaded NE wall of a steep gully. It could have been natural, or remotely triggered by a party riding the ridge above.

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)?Yes
Observer Comments

We observed shooting cracks roughly 1 ft deep and 3-10 ft long on E-NE aspects above tree line. While descending, I triggered a soft slab release on a steep NE facing rollover. It propagated 10 ft wide and ran 15 ft.

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

Loose powder from the road to around 2,900 ft, where SW winds produced patchy un-supportable wind crust on prominent terrain features.


Very thin from the road to tree line, where the snowpack deepened rapidly with elevation. At 2700 ft the snow depth was 37 in.

Photos & Video
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