Small avalanche on judah

Location Name: 
E judah
Region: 
Donner Summit Area
Date and time of avalanche (best estimate if unknown): 
Sat, 12/24/2016 - 13:45
Location Map: 
United States
39° 18' 14.58" N, 120° 19' 2.8128" W
See map: Google Maps
US


Red Flags: 
Recent avalanche activity
Observation made by: Guide at Alpenglow Expeditions
Avalanche Observations
Avalanche Type: 
Dry
Slope: 
35degrees
Trigger type: 
Skier
Crown Height: 
1 ft
Aspect: 
Northeast
Weak Layer: 
Storm Snow
Avalanche Width: 
10ft.
Terrain: 
Above Treeline
Elevation: 
8 200ft.
Bed Surface: 
Unknown
Avalanche Length: 
30ft.
More detailed information about the avalanche: 

D1 soft slab avalanche initiated from dropping small cornice onto slope.

Avalanche Photos: 
Weather Observations
Blowing Snow: 
No
Cloud Cover: 
75% of the sky covered by clouds
Air temperature: 
Below Freezing
Wind Speed: 
Light
Precipitation: 
Snow
Air temperature trend: 
Cooling
Wind Direction: 
Northeast
Accumulation rate: 
None
More detailed information about the weather: