Observer Name
Dave Ream
Observation Date
Sunday, February 24, 2013
Avalanche Date
Saturday, February 23, 2013
Region
Provo » American Fork » Dry Fork
Location Name or Route
Dry Fork Ridgline between Supreme Top and Rocky Point
Elevation
10,400'
Aspect
Southeast
Slope Angle
38°
Trigger
Natural
Trigger: additional info
Cornice Triggered
Avalanche Type
Cornice Fall
Avalanche Problem
Cornice
Weak Layer
New Snow
Depth
16"
Width
40'
Vertical
200'
Comments
While heading out towards Rocky Point and then on to Wolverine I stopped to check out natural cornice failure and additional compact car size cornice formed from stong wind and snow from Saturdays storm. The natural looked like it failed later during the storm or early Sunday from the freshness of the debris. As I carefully approach the overhanging cornice from a safe spot 10 feet away, As I approched my additional weight cause the cornice to fail with a loud snap. It snapped with energy and a large chunk slid down the slope 50' digging a shallow trench. The slope directly below did not fail as you can see with attached photos.
Coordinates