11th Annual Utah Snow & Avalanche Workshop Open and Motorized Sessions Oct. 27th.
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Observer Name: 
Trenbeath
Observation Date: 
Monday, February 13, 2017
Avalanche Date: 
Monday, February 13, 2017
Location Name or Route: 
Upper Horse Creek Laurel Saddle
Elevation: 
11600
Aspect: 
North
Slope Angle: 
38
Trigger: 
Skier
Trigger: additional info: 
Intentionally Triggered
Avalanche Type: 
Soft Slab
Avalanche Problem: 
Cornice
Weak Layer: 
New Snow/Old Snow Interface
Depth: 
12"
Width: 
350
Vertical: 
500
Comments: 

6" of new, medium density snow with SE ridge top winds 15-20 mph with gusts into the high 20's. Just enough wind to move snow around and form sensitive cornices and soft wind slabs along upper elevation ridge crests facing N-NE. Intentionally dropped a few cornices that gouged into the loose snow, initiating some fairly long running sluffs. Found a section that looked more slabby and connected. Stomped on cornice and it released, pulling out a soft slab 350' wide. Isolated to the ridge crest, the slab tapered from 12" deep to 3" over a vertical span of about 20' though once moving, it entrained loose surface snow and ran for about 500' vertical feet. 

Coordinates: 
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