Avalanche: Hatcher Pass

Location: Easter slopes of Upper Willow Creek

Route & General Observations

West aspect of Skyscraper into the Upper Willow Creek Drainage.

Avalanche Details
If this is an avalanche observation, click yes below and fill in the form as best as you can. If people were involved, please provide details.
Trigger SnowmachinerAvalanche Type Hard Slab
Aspect WestElevation 3900ft
Slope AngleunknownCrown Depth 24in
Width 150ftVertical Run 400ft
Avalanche Details

Snowmachine highmark (decent) trigger on faceted weak layer with crown height varying between 10" and 30". D2 - D2.5. HS-AM-D2-R2-2.5.

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

Widespread activity following previous storm cycle.

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

No new snow, calm, +2C, high overcast.

Snow surface

Non-supportable 5-7cm suncrust.


Sorry for the scant (and late!) info, small iphone and 1 bar of cell coverage!

Photos & Video
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