Small Avalanche - Ridge, North of Blue Mountain

Location Name: 
Ridge, North of Blue Mountain
Region: 
Selkirk Mountains
Date and time of avalanche (best estimate if unknown): 
Sun, 02/28/2021 - 11:45
Location Map: 
United States
48° 24' 29.5704" N, 116° 39' 12.1212" W
US


Red Flags: 
Whumphing noises, shooting cracks, or collapsing
Recent loading by new snow, wind, or rain
Obvious avalanche path

Observation made by: Public
Avalanche Observations
Avalanche Type: 
Slab
Slope: 
34degrees
Trigger type: 
Other - explain below
Crown Height: 
2 ft
Aspect: 
East
Weak Layer: 
Other - explain below
Avalanche Width: 
40ft.
Terrain: 
Near Treeline
Elevation: 
6 550ft.
Bed Surface: 
Old Snow
Avalanche Length: 
100ft.
More detailed information about the avalanche: 

Skier controlled size 1 avalanche. Popped out, sympathetically, while skier approached slope for ski cut test. Shooting cracking above crown. Nearby snow test onservations and results were (27° slope): CTM and ECTE, both down 80cm on buried surface hoar. 

Avalanche Photos: 
Weather Observations
Blowing Snow: 
No
Cloud Cover: 
100% of the sky covered by clouds
Air temperature: 
Below Freezing
Wind Speed: 
Light
Precipitation: 
Snow
Air temperature trend: 
Warming
Wind Direction: 
Southwest
Accumulation rate: 
None
More detailed information about the weather: 

-6° C at 11:30am. -5° C at 1:00pm. Blowing snow observered the day before (Moderate, westerly) on a similar ridge to he south at 4pm.