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Observer Name: 
Ted Scroggin
Email: 
tscroggin@allwest.net
Observation Date: 
Thursday, January 15, 2015
Occurrence Date: 
Wednesday, January 14, 2015
Occurence Time: 
Unknown
Region: 
Whitney Basin
Location Name or Route: 
Double Hill-Whitney Basin
Elevation: 
10200
Aspect: 
Northeast
Slope Angle: 
36
Trigger: 
Snowmobiler
Trigger: additional info: 
Unintentionally Triggered
Avalanche Type: 
Soft Slab
Avalanche Problem: 
Storm Slab
Weak Layer: 
New Snow/Old Snow Interface
Depth: 
14"
Width: 
100
Vertical: 
200
Comments: 
This is likely a sled triggered slide from a day or two ago. It was either triggered as the rider was coming down from the top or side-hilling across the slope. Nothing too big or deep, and was probably pretty easy for the rider to throttle out of it as it broke at their sled and not above them.
Comments: 
It looks like the weak layer was some weak faceted snow above a moisture crust that is the interface between the old snow and the recent storm. The crust is very thin and may not be an issue later on as the temperature gradient might eat it up or just get compacted out by weight from above?
Comments: 
I was able to get easy column shears with a compression test on one of the flanks.
Coordinates: 
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