Natural cornice collapse triggered loose wet avalanche on W ridge of Mt. Tallac.

Location Name: 
West Ridge of Mt. Tallac
Region: 
Desolation Wilderness Area (including Emerald Bay)
Date and time of avalanche (best estimate if unknown): 
Tue, 03/14/2017 - 13:00
Location Map: 
United States
38° 54' 15.9048" N, 120° 6' 19.26" W
See map: Google Maps
US


Red Flags: 
Rapid warming
Obvious avalanche path
Observation made by: Forecaster
Avalanche Observations
Avalanche Type: 
Wet
Loose/Point-Release
Trigger type: 
Natural Cornice Collapse
Aspect: 
North
Weak Layer: 
Old Snow
Avalanche Width: 
25ft.
Terrain: 
Above Treeline
Elevation: 
9 200ft.
Bed Surface: 
Old Snow
Avalanche Length: 
300ft.
More detailed information about the avalanche: 

Natural avalanche triggered by natural cornice collapse. Date and time unknown, but most likely March 13, 14, or 15 during the mid day or afternoon hours. Avalanche size D1.5 to D2. This was the only such avalanche seen in the area.

Avalanche Photos: