Previous wet slide above Crater Lake

Location Name: 
Crater Lake
Region: 
Carson Pass Area
Date and time of avalanche (best estimate if unknown): 
Sun, 01/16/2011 - 12:00
Location Map: 
United States
38° 43' 19.614" N, 119° 58' 55.0092" W
See map: Google Maps
US


Red Flags: 
Recent avalanche activity
Rapid warming
Obvious avalanche path
Terrain Trap
Observation made by: Professional Observer
Avalanche Observations
Avalanche Type: 
wet,
Slope: 
40degrees
Trigger type: 
Natural
Crown Height: 
Less than 1 ft
Aspect: 
East
Weak Layer: 
Old Snow
Avalanche Width: 
200ft.
Terrain: 
Above Treeline
Elevation: 
9 000ft.
Bed Surface: 
Old Snow
Avalanche Length: 
800ft.
More detailed information about the avalanche: 

Debris was up to 1m deep - so R1 D2. Point releases above cliff band appear to be only ~10cm deep.

Avalanche Photos: 
Weather Observations
Blowing Snow: 
No
Cloud Cover: 
Clear
Air temperature: 
Above Freezing
Wind Speed: 
Light
Precipitation: 
None
Air temperature trend: 
Warming
Wind Direction: 
West
Accumulation rate: 
None
More detailed information about the weather: