Northwest Avalanche Center

Weak Layer

Weak Layer Information

Layer Burial Date:
December 18, 2022
Layer Grain Type (Primary):
SH -Surface Hoar
Layer Grain Type (Secondary):
FCsf - Near-Surface Facets
Comments:

Name: Dec 18th weak layer

Author: JH

Zones: WN, WC, STV, SNQ, EC, WS, EN?, Others?

 

Media

Large (3.0mm) surface hoar, buried on 12/18, was found resting on older drifted slabs. E, 5,560ft, Lanham creek
The Dec 18th interface shears sudden and planar on buried surface hoar (3.0mm). Lanham Creek, E, 5,560ft.

Weak Layer Observations

Professional Field Reports:
Dec 19, 2022 - Lanham Lake
Avalanche Occurrences:
None Reported
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