Avalanches on Donner Peak

Location Name: 
Donner Peak
Region: 
Donner Summit Area
Date and time of avalanche (best estimate if unknown): 
Wed, 03/16/2011 - 08:00
Location Map: 
United States
39° 18' 39.9276" N, 120° 18' 51.264" W
See map: Google Maps
US


Red Flags: 
Recent avalanche activity
Recent loading by new snow, wind, or rain
Obvious avalanche path
Terrain Trap
Observation made by: Forecaster
Avalanche Observations
Avalanche Type: 
dry,slab,
Slope: 
38degrees
Trigger type: 
Natural
Crown Height: 
2 ft
Aspect: 
Northeast
Weak Layer: 
Storm Snow
Avalanche Width: 
300ft.
Terrain: 
Near Treeline
Elevation: 
7 600ft.
Bed Surface: 
Storm Snow
Avalanche Length: 
1 000ft.
Number of similar avalanches: 
3
More detailed information about the avalanche: 

These natural avalanches occurred sometime on the morning of March 16th. They likely failed on weaknesses that formed during the storm and had crowns of 1-3 ft in depth.

Avalanche Photos: 
Weather Observations
Air temperature: 
Precipitation: 
Air temperature trend: 
Wind Direction: 
Accumulation rate: 
More detailed information about the weather: