found the facet sluff problem!

CB Avalanche Center 2020-21 Observations

Zone: Northwest Mountains

Location: schuykill ridge – thanksgiving bowl

Date of Observation: 12/04/2020

Name: Mark Robbins

 

Subject: found the facet sluff problem!

Aspect: North East

Elevation: 9200-11400

Avalanches:

intentional ski cut on a convexity at 11,150′ on skier’s left side of thanksgiving bowl produced a loose dry avalanche or facet sluff which propagated 30 feet and ran 650 vertical feet, through small trees and exposing rocks below the snow, stopping on a bench in a stand of trees. Enough energy to take you off your feet and moving fast enough to hurt you in the trees or strained through rocks, not enough to bury you. See photo, have a couple videos which I’ll send to CBAC.

 

Weather:

Snowpack:

Photos: