Loose Dry Avalanche on Castle Peak

Location Name: 
Castle Peak
Region: 
Donner Summit Area
Date and time of avalanche (best estimate if unknown): 
Tue, 01/27/2015 - 14:00
Location Map: 
United States
39° 21' 55.692" N, 120° 20' 55.9428" W
See map: Google Maps
US


Red Flags: 
Recent loading by new snow, wind, or rain
Obvious avalanche path
Observation made by: Forecaster
Avalanche Observations
Avalanche Type: 
Dry
Loose/Point-Release
Trigger type: 
Unknown
Aspect: 
Northeast
Weak Layer: 
Storm Snow
Terrain: 
Above Treeline
Elevation: 
8 800ft.
Bed Surface: 
Old Snow
More detailed information about the avalanche: 

Photo taken on Jan 31 of loose dry avalanche of unknown trigger. Most likely happened during the afternoon of Jan 27. Some evidence of rockfall in the debris and between the debris and the ski tracks.

Snowpit or crown profile photo or graph: 
Weather Observations
Air temperature: 
Precipitation: 
Air temperature trend: 
Wind Direction: 
Accumulation rate: 
More detailed information about the weather: