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Avalanche: Hatcher Pass

Location: Marmot Butt

Date:
Observer:
Route & General Observations

There was a trail most of the way up. Super Deep Trench. What made this slide interesting was that the deposition zone was almost all powder blast. The skier was 6+ turns into the run when it released. There was almost no sound.

Contact, Location & General Observations
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Forecaster Comments

An observation outside the party involved and photograph supports the theory that this avalanche failed in the basal facets.

Models indicate that temperatures will be rising this week, possibly reaching 35-37 deg F at 3000'. These temperatures will allow the new storm snow to settle and become more cohesive. Expect the new snow to become more reactive to human triggers, on slopes 35 deg and steeper, and for avalanches to increase their propagation potential and size. Also note that in isolated areas new snow avalanches may be able to step down into deep, hard slabs, over very weak, basal facets near the ground, compounding the consequences of an avalanche.

Avalanche Details
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Trigger SkierAvalanche Type Soft Slab
Aspect WestElevationunknown
Slope AngleunknownCrown Depth 24in
Width 100ftVertical Run 1000ft
Avalanche Details

Started 50-100' wide, ran 500-1000' long, deposition fan was several hundred feet wide. Very few blocks.

Red Flags
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Observer Comments

Only the slightest amount of settling was experienced. The pits we dug failed as soon as the block was isolated.

Weather & Snow Characteristics
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Weather

Zero Visibility.

Photos & Video
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