Avalanche at Mt. Rose Summit

Location Name: 
Mt. Rose Summit Parking Lot
Region: 
Mount Rose Area
Date and time of avalanche (best estimate if unknown): 
Mon, 12/14/2015 - 04:00
Location Map: 
United States
39° 18' 48.6504" N, 119° 53' 52.1988" W
See map: Google Maps
US


Red Flags: 
Recent avalanche activity
Recent loading by new snow, wind, or rain
Obvious avalanche path
Observation made by: Forecaster
Avalanche Observations
Avalanche Type: 
Dry
Slab
Slope: 
39degrees
Trigger type: 
Unknown
Crown Height: 
1 ft
Aspect: 
East
Weak Layer: 
Storm Snow
Avalanche Width: 
60ft.
Terrain: 
Near Treeline
Elevation: 
8 960ft.
Bed Surface: 
Storm Snow
Avalanche Length: 
40ft.
More detailed information about the avalanche: 

Update: Thanks to addtional information from users in the Mt. Rose area who reported that this slide was present as of Monday @ 12:00pm, we can now say that this slide occurred either Sunday night (12/13/15) or Monday morning (12/14/15). It is a wind loaded E-ENE facing 35 slope. The trigger may have been new snow added by snow removal from the parking lot. 

Avalanche Photos: