Sherwins - triggered storm slab

AVALANCHE OBSERVATION
Sherwins

Drainage:

Submission Info
josh feinberg
Forecaster
Wednesday, December 4, 2019 - 1:45pm
Red Flags: 
Recent loading by new snow, wind, or rain
Avalanche Type: 
Dry
Slope: 
38degrees
Trigger type: 
Skier
Crown Height: 
Less than 1 ft
Aspect: 
North
Weak Layer: 
Old Snow
Avalanche Width: 
25ft.
Terrain: 
Below Treeline
Elevation: 
9 350ft.
Bed Surface: 
Old Snow
Avalanche Length: 
150ft.
Number of similar avalanches: 
2
Number of partial burials: 
0
Number of full burials: 
0
More detailed information about the avalanche: 

Triggered small storm slab avalanche today below Mammoth Rock Bowl while ski cutting steep convexity.  ~25ft wide, 8-10" crown.  D1.5, R1.  Soft new storm snow from today failed on old snow surface.  Very soft slab.  Wouldn't have resulted in burial here, but definitely could have if a terrain trap was involved, and was enough to knock someone off their feet and could have resulted in injury above consequential terrain.     

Avalanche Photos: 
Blowing Snow: 
No
Cloud Cover: 
100% of the sky covered by clouds
Wind Speed: 
Calm
Precipitation: 
Snow
Accumulation rate: 
Less than 1 in. per hour
More detailed information about the weather: 

Snowing.  Calm winds at this location, moderate SW ridge just at ridgetop.  

Number of People Caught: 
0
37° 36' 45.2808" N, 118° 59' 37.6692" W
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