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Wind Slab Avalanche off Green Butte

Location Name: 
Wind Slab Avalanche off Green Butte
Region: 
Mt. Shasta
Date and time of avalanche (best estimate if unknown): 
Thu, 01/25/2018 (All day)
Observation made by: 
Forecaster
Red Flags:
Whumphing noises, shooting cracks, or collapsing
Recent loading by new snow, wind, or rain

Location Map

96067 Mount Shasta , CA
United States
41° 22' 29.1072" N, 122° 12' 40.0788" W
See map: Google Maps
California US

Avalanche Observations

Details

SS-N-R1-D2-S

Characteristics

Avalanche Type: 
Slab
Trigger type: 
Natural
Slope: 
40degrees
Aspect: 
Northeast
Elevation: 
9 200ft.
Terrain: 
Above Treeline
Weak Layer: 
Storm Snow
Bed Surface: 
Unknown
Crown Height: 
2 ft
Avalanche Width: 
200ft.
Avalanche Length: 
600ft.
Number of people caught: 
0
Number of partial burials: 
0
Number of full burials: 
0

Weather Observations

Details

A winter storm brought periods of wind (west/southwest) and average new snow depths of 30-35 cm over a 48 hour period.

Statistics

Cloud Cover: 
75% of the sky covered by clouds
Blowing Snow: 
Yes
Precipitation: 
None
Accumulation rate: 
None
Air temperature: 
Below Freezing
Air temperature trend: 
Warming
Wind Speed: 
Moderate
Wind Direction: 
West