Avalanche on Poop Chute

Location Name: 
Donner Summit
Region: 
Donner Summit Area
Date and time of avalanche (best estimate if unknown): 
Wed, 01/27/2010 - 10:00
Location Map: 
United States
39° 18' 52.002" N, 120° 19' 28.344" W
See map: Google Maps
US


Red Flags: 
Recent avalanche activity
Obvious avalanche path
Terrain Trap
Observation made by: Professional Observer
Avalanche Observations
Avalanche Type: 
dry,slab,
Slope: 
38degrees
Trigger type: 
Other - explain below
Crown Height: 
Less than 1 ft
Aspect: 
Northwest
Weak Layer: 
Old Snow
Avalanche Width: 
150ft.
Terrain: 
Below Treeline
Elevation: 
7 200ft.
Bed Surface: 
Old Snow
Avalanche Length: 
400ft.
More detailed information about the avalanche: 
SS-U-R4-D1+ Closer up view from the avalanche reported from Tuesday morning 1/26.  Avalanche on Poop Chute started very near the top of chute and ran down to the bottom of path, most of chute sliding, at it's widest about 150'.  Crown line 2-6'', depostion area very shallow and not presenting a problem for human burial.  This slide had potential to be a D2, which is defined as able to bury, injure or kill a person, there were some exposed rock and some groups of trees at the bottom of path that could have posed potential injury risk for humans.  
Avalanche Photos: 
Weather Observations
Air temperature: 
Precipitation: 
Air temperature trend: 
Wind Direction: 
Accumulation rate: 
More detailed information about the weather: