|Region:||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.
|Trigger||Foot Penetration||Avalanche Type||Soft Slab||Aspect||East Northeast|
|Elevation||3500ft||Slope Angle||26deg||Crown Depth||24in|
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'.
Obvious signs of instability
|Recent Avalanches?||No||Collapsing (Whumphing)?||Yes||Cracking (Shooting cracks)?||No|
All wind deposited accumulations were collapsing when traversed.
High winds throughout the day, cloud cover, some precipitation as snow but little accumulation. Temps were warm, 28-32F.
Mostly scoured ground with pockets of wind slabs.