Avalanche on ridge SE behind 1st lake

Location Name: 
On the ridge SE backside of the 1st lake
Region: 
Selkirk Mountains
Date and time of avalanche (best estimate if unknown): 
Sun, 02/07/2021 - 12:36
Location Map: 
United States
48° 37' 29.8524" N, 116° 34' 27.4728" W
See map: Google Maps
US


Red Flags: 
Whumphing noises, shooting cracks, or collapsing
Observation made by: Public
Avalanche Observations
Avalanche Type: 
Dry
Slope: 
50degrees
Trigger type: 
Snowmobiler
Avalanche Width: 
600ft.
Terrain: 
Above Treeline
Elevation: 
6 000ft.
Avalanche Length: 
300ft.
More detailed information about the avalanche: 
Avalanche Photos: 
Weather Observations
Cloud Cover: 
Clear
Air temperature: 
Below Freezing
Wind Speed: 
Light
Precipitation: 
Air temperature trend: 
Wind Direction: 
Northeast
Accumulation rate: 
More detailed information about the weather: