Small Wind Slab on Andesite Peak

Location Name: 
Andesite Peak
Region: 
Donner Summit Area
Date and time of avalanche (best estimate if unknown): 
Sun, 01/03/2016 - 13:00
Location Map: 
United States
39° 21' 0.45" N, 120° 21' 56.0412" W
See map: Google Maps
US



Observation made by: Guide at Tahoe Mountain School
Avalanche Observations
Avalanche Type: 
Slab
Slope: 
30degrees
Trigger type: 
Skier
Crown Height: 
Less than 1 ft
Aspect: 
Northeast
Avalanche Width: 
6ft.
Terrain: 
Above Treeline
Elevation: 
8 100ft.
Bed Surface: 
Old Snow
Avalanche Length: 
3ft.
Number of people caught: 
0
More detailed information about the avalanche: 

Skinning on a test slope on Andesite ridge produced a small wind slab and shooting cracks.  The test slope was NE facing approximately 8100ft.  No other instabilities were observed.

Weather Observations
Cloud Cover: 
100% of the sky covered by clouds
Air temperature: 
Below Freezing
Wind Speed: 
Light
Precipitation: 
None
Air temperature trend: 
Warming
Wind Direction: 
Southwest
Accumulation rate: 
None