Small Slab Avalanche off SE face of West Willow Peak above Lone Lake

Location Name: 
West Willow Peak above Lone Lake
Region: 
St. Regis Basin
Date and time of avalanche (best estimate if unknown): 
Sun, 01/26/2020 - 12:30
Location Map: 
United States
47° 26' 2.1264" N, 115° 46' 55.8372" W
See map: Google Maps
US


Red Flags: 
Recent loading by new snow, wind, or rain
Observation made by: Public
Avalanche Observations
Avalanche Type: 
Slab
Loose/Point-Release
Slope: 
35degrees
Trigger type: 
Skier
Crown Height: 
Less than 1 ft
Aspect: 
Southeast
Weak Layer: 
Old Snow
Terrain: 
Near Treeline
Elevation: 
6 300ft.
Bed Surface: 
Other - explain below
Number of people caught: 
0
Number of partial burials: 
0
Number of full burials: 
0
More detailed information about the avalanche: 

Skier was turning down an small mildly exposed south eastern facing slope near treeline facing Steven's Peak on West Willow Peak.  On third turn the layer below the rain crust about 15-30cm down failed resulting in a slab avalanche that was small in size (crown width was probably about 3-5m and crown height was about 15-30cm.  No skiers in the group were caught in the avalanche.  We thought that the GoPro was running during the run, but it ended up dying due to the cold prior to dropping in and so we were unable to get video/photos of the run, but google earth image of the approx location is attached.  

Avalanche advisory for the day was EXPIRED ON JANUARY 25, 2020 @ 6:24 AM

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