Natural Activity in the Sherwin

AVALANCHE OBSERVATION
Mammoth rock

Drainage:

Submission Info
Forecaster
Wednesday, March 20, 2019 - 9:30am
Red Flags: 
Recent avalanche activity
Recent loading by new snow, wind, or rain
Avalanche Type: 
Dry
Slab
Trigger type: 
Natural
Crown Height: 
1 ft
Aspect: 
Northeast
Weak Layer: 
Storm Snow
Terrain: 
Near Treeline
Elevation: 
10 000ft.
Bed Surface: 
Old Snow
Number of similar avalanches: 
2
More detailed information about the avalanche: 

 

I observed two natural avalanches on the morning of 3/20.  Both were on Sherwin ridge with the crown lines just below cornice features. I suspect both of the avalanches to be wind slabs. One avalanche broke skiers left of the "HOSE" and appeared to be about 80-100' wide and looked have run at least 200' through sparsely spaced trees. The second broke below the cornice skiers right side o main avy path.  This avalanche appeared to be much wider and looked to have only run a short distance.  Spotted from a distance I would suspect crown depths to be about 12" and destructive size in the D1- D1.5 range.

 

Avalanche Photos: 
Air temperature: 
Precipitation: 
Air temperature trend: 
Wind Direction: 
Accumulation rate: 
More detailed information about the weather: 
37° 36' 28.7568" N, 118° 59' 27.4056" W
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