Avalanche: Bear River Range 12/20/2010

Observer Name:

Toby

Observation Date:

12/21/2010

Occurrence Date:

12/20/2010

Occurrence Time:

Overnight

Region:

Bear River Range
Logan

Avalanche Characteristics

Elevation:

8000'

and above

Elevation Range Maximum:

9800'

Elevation Range Minimum:

7100'

Aspect:

North

Northeast

East

Southeast

South

Northwest

and steeper

Slope Angle:

Trigger:

Natural

Avalanche Type:

Hard Slab

Weak Layer:

Facets Above Crust

Depth (avg):

unknown

Depth Range:

12" to

Width:

Unknown

Width Range:

100' to

400'

Vertical:

Unknown

Vertical Range:

100' to

800'

General Comments

We've noted evidence of a fairly widespread natural hard slab avalanche cycle in the Central and Southern Bear River Range that occurred overnight 12-19/12-20.

General Comments 2

Here's a look at one of the bigger sisters from 12-21-2010.... The crown of the broad avalanche is mostly blown-in....