Sawtooth Avalanche Center

Weak Layer

Weak Layer Information

Layer Burial Date:
February 26, 2023
Layer Grain Type (Primary):
FCsf - Near-Surface Facets
Layer Grain Type (Secondary):
MFcr - Melt Freeze Crust
Comments:

Facet + crust on solar margins and solars, FCsf on shady slopes. The crust is fairly prominent beneath the “recent” snowfall, as of March 5th. The first noted activity on this layer was the Verlon’s plow triggered slide on the night of Feb 27th (very soft slab that was only about 6″ thick but over 200 ft wide).

Weak Layer Observations

Professional Field Reports:
Mar 10, 2023 - driving and glassing Hailey-Eagle Creek
Mar 8, 2023 - Titus Ridge
Mar 7, 2023 - Couch Summit - Salt Bowns Rd
Avalanche Occurrences:
Mar 31, 2023 - Frenchman's Creek drainage
Mar 10, 2023 - Fishhook drainage
Mar 14, 2023 - Fishhook drainage
Mar 14, 2023 - Emma Creek
Mar 14, 2023 - Emma Creek
Mar 14, 2023 - Smiley Creek
Mar 14, 2023 - Vienna Creek
Mar 14, 2023 - Smiley Creek