Observer Name
Jeremy Jensen
Observation Date
Thursday, March 17, 2011
Avalanche Date
Thursday, March 17, 2011
Region
Logan » Logan River » Tony Grove » Lower Cornice Ridge Area
Location Name or Route
Tony Grove South of cornice ridge
Elevation
9,300'
Aspect
East
Slope Angle
39°
Trigger
Snowmobiler
Trigger: additional info
Unintentionally Triggered
Avalanche Type
Soft Slab
Weak Layer
New Snow/Old Snow Interface
Depth
18"
Width
200'
Vertical
Unknown
Comments
May have been two different slabs breaking, one on the ascent of the slope and one and the decent/landing. It looked to me like a snowmobiler had triggered the first slide on the way up the slope, turned around atop the cornice and jumped back into the slope triggering the slide to the north. Looked to be 12-18 inches deep and 150- 200 feet wide.
Coordinates