Snowboarder triggered avalanche in the Gas-ex chutes

Location Name: 
GasEx Chutes
Region: 
Mount Rose Area
Date and time of avalanche (best estimate if unknown): 
Sat, 11/21/2009 - 09:16
Location Map: 
United States
39° 18' 51.0768" N, 119° 54' 7.2144" 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: 
Snowboarder
Crown Height: 
Less than 1 ft
Aspect: 
North
Avalanche Width: 
15ft.
Terrain: 
Above Treeline
Elevation: 
9 000ft.
Bed Surface: 
Old Snow
Avalanche Length: 
25ft.
Number of similar avalanches: 
2
More detailed information about the avalanche: 

This slide failed on the Nov. 13th facet layer.

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