11th Annual Utah Snow & Avalanche Workshop Open and Motorized Sessions Oct. 27th.
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Observer Name: 
Michael Janulaitis
Observation Date: 
Friday, January 8, 2016
Avalanche Date: 
Friday, January 8, 2016
Region: 
Weber Canyon
Location Name or Route: 
Weber Canyon
Elevation: 
10500
Aspect: 
Northwest
Slope Angle: 
36
Trigger: 
Skier
Trigger: additional info: 
Unintentionally Triggered
Avalanche Type: 
Soft Slab
Avalanche Problem: 
Persistent Weak Layer
Weak Layer: 
Facets
Depth: 
14"
Width: 
30
Vertical: 
100
Comments: 

I was up in the Uintas today in the Weber Basin drainage where I triggered this slide at 10500 on a NW aspect.  There was 25 cm's of new medium density snow.  When I was skiing just below a roll over midf-slope I felt it was time to depart.  Just after skiing off the main line to the skiers right to a less dangerous location I looked over my shoulder and noticed the crown and snow running.  Upon investigation I was surprised to notice the snow did not slide on the new snow/old snow interface.  Instead, a 5 cm layer just below the new snow capped on top with a light melt-freeze (which the new snow is sitting on top) was sitting on top of another melt-freeze crust layer (~1 cm thick) with near surface facets on top.  This is the layer that failed. Looking at the first pic you see my first tracks lookers left.  Notice just before I kicked out, I skied over a rock.  Since this slide ran on a persistent weak layer, although I am doubtful, I was wondering if this is where I triggered the slide. 

Forecaster Comment: Michael, thank you for posting this information and all your top notch observations.   

 

Coordinates: 
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