Avalanche: Cornice Ridge, Big Cornice 4/10/2011

Observer Name:

Jeremy Jensen

Observation Date:

04/10/2011

Occurrence Date:

04/10/2011

Occurrence Time:

9:30am

Region:

Cornice Ridge, Big Cornice
Tony Grove
Logan River
Logan

Location Name:

Pinball Alley

Location

41° 53' 29.2128" N, 111° 39' 38.0736" W

Avalanche Characteristics

Elevation:

9300'

Aspect:

East

Slope Angle:

Trigger:

Snowmobiler

Trigger: additional info:

Remotely Triggered

Avalanche Type:

Soft Slab

Weak Layer:

New Snow/Old Snow Interface

Depth (avg):

Width:

300'

Vertical:

500'

General Comments

Soft slab avalanche broke a few hundred feet above snowmobilers climbing the gully just below. Rider was able to turn around and get out of the way of the debris which did not run as far as they usually do in this area. Debris pile was soft and around 4-5 feet deep at the base of the bowl. Visibility was low so I did not get a photo.

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