Avalanche Occurrence

Evidence of a natural cycle of very large avalanches in alpine areas during the Jan 5-7th storm in areas near White Pass and the Goat Rocks.

Observer:

NWAC Forecaster

Occurrence Date:

Jan 7, 2022 ()

Location:

West Slopes South: White Pass

Comments:

Viewed from the road, so bed surface/weak layer is unknown.
Estimate D3-D4, but crown depth is unknown.

Avalanche propagated across the entire upper bowl below a corniced ridgeline. Crown looks to be particularly deep below the rock outcrop in the middle of the bowl.

# of Avys:

1

Aspect:

NE

Start Zone Elev:

6000ft

Size:

D3.5 / R4

Type:

SS-Soft Slab

Trigger:

N-Natural

Width:

1310ft