Observation Date:
February 20, 2021
Submitted:
February 20, 2021
Zone or Region:
Stevens Pass
Activity:
Skiing/Snowboarding
Location:
Lake Susan jane environs
Did you trigger any avalanches?
Yes
Was it intentional?
Yes
Avalanche Type:
Soft Slab
Size:
Size 1: Relatively harmless to people
Elevation:
5000
Aspect:
W
Comments:
Within well spaced tree run. Slope just greater than 35. Triggered from a ski cut. Depth 6"
Did you observe any avalanches?
Yes
Avalanche Type:
Hard Slab
Size:
Size 1: Relatively harmless to people
Elevation:
4500
Aspect:
E
Comments:
Wind slab trigger from stomping, small pocket only 4"deep at greatest.
Did you see shooting cracks?
Yes, Isolated
Did you experience collapsing or whumpfing?
No
Skied flur de trees.
Blowing snow present, active wind loading and cornices building. Touchy pockets of wind slab.
Skied W aspect, mostly below 35° with one pitch greater than. Only sluff was reactive >35, and on 35 or greater slopes and rollovers, 2” of wind loaded snow would slide, with one storm slab of ~8"? Trigger by a ski cut.
One observed natural on a small convexity likely triggered by a tree bomb