Avalanche: White Rock Hollow

Observer Name
Weed
Observation Date
Thursday, March 21, 2013
Avalanche Date
Thursday, March 21, 2013
Region
Logan » Left Hand Fork-Blacksmith Fork » Richards Hollow » White Rock Hollow
Location Name or Route
Red Pine Ridge/White Rock Hollow
Elevation
9,000'
Aspect
East
Slope Angle
40°
Trigger
Skier
Trigger: additional info
Intentionally Triggered
Avalanche Type
Soft Slab
Avalanche Problem
Wind Drifted Snow
Weak Layer
New Snow/Old Snow Interface
Depth
12"
Width
70'
Vertical
200'
Comments
  • The area had naturally avalanched within the last couple hours, but our VIP guest, Bruce Engelhard, dropped a small piece of cornice on the slope and a pretty nice soft slab popped out. A great example of manageable avalanche conditions.
  • The second photo is of some of the fresh natural activity in the central region of the bowl; cornice-falls and resulting small wind slabs. We saw evidence of other natural activity and a few natural wind slabs ran while we were in the area, triggered by cornice falls.
  • The third photo is looking back up at the crown of our cornice-fall triggered soft slab from a distance.
Coordinates