Avalanche: Chugach State Park

Location: Scree slope above Black Lake

Route & General Observations

From the Glen Alps trailhead we hiked up O’Malley gully, across the Ball Field, down onto Black Lake, and dropped into the Middle Fork Campbell creek drainage. We retraced this route on the way out.

Avalanche Details
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Trigger Foot PenetrationRemote Trigger0
Avalanche Type Soft SlabAspect East Northeast
Elevation 3500ftSlope Angle 26deg
Crown Depth 24inWidth 20ft
Vertical Rununknown  
Avalanche Details

A wind deposited feature was identified as likely unstable based on prior observations that day. The slide was triggered by walking/trenching into the feature at which point it released above the 'tester'. The resulting slide was larger than anticipated. The 'tester' was carried down the slope some 20-30'.

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?No
Collapsing (Whumphing)?Yes
Cracking (Shooting cracks)?No
Observer Comments

All wind deposited accumulations were collapsing when traversed.

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

High winds throughout the day, cloud cover, some precipitation as snow but little accumulation. Temps were warm, 28-32F.

Snow surface

Mostly scoured ground with pockets of wind slabs.



Photos & Video
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