Avalanche on Summit Creek

Location Name: 
Summit Creek off Lightning Creek
Region: 
Cabinet Mountains
Date and time of avalanche (best estimate if unknown): 
Fri, 02/05/2021 - 12:00


Red Flags: 
Recent avalanche activity
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: 
37degrees
Trigger type: 
Natural
Crown Height: 
2 ft
Aspect: 
North
Weak Layer: 
Other - explain below
Avalanche Width: 
100ft.
Terrain: 
Near Treeline
Elevation: 
5 800ft.
Bed Surface: 
Other - explain below
Avalanche Length: 
30ft.
Number of similar avalanches: 
2
Number of people caught: 
0
Number of full burials: 
0
More detailed information about the avalanche: 

On the steep side of a rollover. Intense cracking/collapsing noises on the skin climb up. The weak layer was buried surface hoar and the bed was an ice crust. The 2 other avalanches were much longer and with more debris but we didn't get close enough to get good information. 

 

Avalanche Photos: 
Snowpit or crown profile photo or graph: 
Weather Observations
Cloud Cover: 
50% of the sky covered by clouds
Air temperature: 
Below Freezing
Wind Speed: 
Moderate
Precipitation: 
None
Air temperature trend: 
Cooling
Wind Direction: 
Southwest
Accumulation rate: 
More detailed information about the weather: