Route & General Observations
Orca North Chute – skier triggered sluff that triggered a small slab. No one was caught or injured.
|Trigger||Skier||Avalanche Type||Soft Slab||Aspect||North|
|Elevation||2500ft||Slope Angle||unknown||Crown Depth||12in|
A skier triggered dry loose sluff on a North chute of Orca, and stopped to let it pass by. Well below them the sluff triggered a small slab, ~12" thick and 20' wide that ran the remainder of the chute to the fan below. No one was caught, but sluff was heavy and fast moving and a powder cloud was seen after it triggered the slab.
Obvious signs of instability
|Recent Avalanches?||Yes||Collapsing (Whumphing)?||No||Cracking (Shooting cracks)?||No|
Small skier triggered slab on North chute
The sluff on North aspects was surprisingly fast and heavy
Very large and impressive surface hoar was observed on Orca at all elevations
The old bed surface was very firm and supportable