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Avalanche: Uintas

Observer Name
Ted Scroggin
Observation Date
Friday, March 20, 2020
Avalanche Date
Sunday, March 15, 2020
Region
Uintas
Location Name or Route
Elizabeth Ridge
Elevation
10,100'
Aspect
Northeast
Slope Angle
37°
Trigger
Unknown
Trigger: additional info
Cornice Triggered
Avalanche Type
Hard Slab
Avalanche Problem
Persistent Weak Layer
Weak Layer
Facets
Depth
5'
Width
100'
Vertical
100'
Comments
Stumbled onto this somewhat older avalanche in the Elizabeth Ridge area today. Did not think it was much when I first viewed it from the ridge line, but holy cow this has me scratching my head. This northeast facing slope is not really much of a slope, it is steep for a short distance but loses slope angle quite fast. The depth at the top of the crown is around 16" deep with one flank breaking as deep as 5' or more. I could not quite figure out what the weak layer is until I kept moving around the crown and finally found the buried crust with small faceted snow above the crust. This is a very hard dense slab of snow that I'm guessing a piece of cornice triggered this slide, I did not see any tracks around and not sure a person could trigger this??? It may have happened last weekend with the steady strong winds that went on for days. This is likely a real outlier, but for me it is a good reminder that a buried crust with faceted snow above and below can still be a layer to keep an eye on.
Comments
A few soft new snow slabs along the ridge lines not breaking very wide and manageable in size today.
Coordinates