West side Schweitzer activity

Location Name: 
Behind triple
Region: 
Selkirk Mountains
Date and time of avalanche (best estimate if unknown): 
Sun, 01/31/2021 - 12:30
Location Map: 
United States
48° 22' 1.5168" N, 116° 38' 58.1352" W
See map: Google Maps
US


Red Flags: 
Recent avalanche activity
Whumphing noises, shooting cracks, or collapsing
Recent loading by new snow, wind, or rain
Rapid warming
Observation made by: Public
Avalanche Observations
Avalanche Type: 
Dry
Slope: 
23degrees
Trigger type: 
Skier
Crown Height: 
1 ft
Aspect: 
West
Weak Layer: 
Storm Snow
Avalanche Width: 
70ft.
Terrain: 
Near Treeline
Elevation: 
5 700ft.
Bed Surface: 
Old Snow
Avalanche Length: 
150ft.
Number of similar avalanches: 
4
Number of partial burials: 
1
Number of full burials: 
0
More detailed information about the avalanche: 

Additional snow load from 1/29/21-1-
/31/21 and warming temps seems to have tipped the balance that the buried SH can hold.

Avalanche Photos: 
Weather Observations
Blowing Snow: 
Yes
Cloud Cover: 
100% of the sky covered by clouds
Air temperature: 
Above Freezing
Wind Speed: 
Moderate
Precipitation: 
Snow
Air temperature trend: 
Warming
Wind Direction: 
Southwest
Accumulation rate: 
Less than 1 in. per hour
More detailed information about the weather: