Crowns from before the rain event

Location Name: 
Stevens Peak, NW aspect
Region: 
Silver Valley Area
Date and time of avalanche (best estimate if unknown): 
Thu, 01/13/2022 - 11:30
Location Map: 
United States
47° 25' 30.7128" N, 115° 46' 23.3184" W
US


Red Flags: 

Observation made by: Forecaster
Avalanche Observations
Avalanche Type: 
Dry
Slab
Trigger type: 
Natural
Crown Height: 
2 ft
Aspect: 
Northwest
Weak Layer: 
Storm Snow
Avalanche Width: 
75ft.
Terrain: 
Above Treeline
Elevation: 
6 500ft.
Bed Surface: 
Unknown
Number of similar avalanches: 
1
More detailed information about the avalanche: 

We suspect these two crowns on the NW side of Stevens Peak, barely visible in the photo, were wind slabs which released naturally prior to the recent rain event. They likely ocurred around Tuesday, 1/11, resulting from the few inches of new snow and extended period Southwest wind. Observed from a distance, we estimate both to be naturally triggered soft slabs failing on the new/old snow interface, small relative to path but likely still large enough to bury, injure, or kill a person (SS-N-R2-D2-I).

Avalanche Photos: 
Weather Observations
Air temperature: 
Precipitation: 
Air temperature trend: 
Wind Direction: 
Accumulation rate: 
More detailed information about the weather: