11th Annual Utah Snow & Avalanche Workshop Open and Motorized Sessions Oct. 27th.
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Observer Name: 
Ted Scroggin
Observation Date: 
Tuesday, January 16, 2018
Avalanche Date: 
Sunday, January 14, 2018
Region: 
Uintas
Location Name or Route: 
Yamaha Hill
Elevation: 
10000
Aspect: 
Northeast
Slope Angle: 
36
Trigger: 
Snowmobiler
Trigger: additional info: 
Unintentionally Triggered
Avalanche Type: 
Hard Slab
Avalanche Problem: 
Persistent Weak Layer
Weak Layer: 
Facets
Depth: 
6'
Width: 
500
Vertical: 
700
Comments: 
Unsure of the day when this slide happened, but my guess is not more than a day or two old. Likely scenario is someone rolled up low on the slope near some bushes or thin spot and collapsed the slope and pulled out a decent size avalanche.
Comments: 
1. Some huge hard slab chunks 2. Weak layer is the sugary faceted snow above the buried crust 3. In some places the avalanche stepped down into old early season snow near the ground 4. Decent size avalanche and not something you would want to get caught in
Comments: 
Avalanche was likely triggered from a thin spot near the bottom of the slope and once the weak layer collapsed, a large connected piece of snow released.
Video: 
Coordinates: 
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