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Avalanche: 4th Sister Ridge, low 1/21/2010

Observation Date:

01/21/2010

Occurrence Date:

01/21/2010

Occurrence Time:

11:00am

Region:

4th Sister Ridge, low
Cottonwood
Logan River
Logan

41° 52' 5.5884" N, 111° 40' 0.3216" W

Avalanche Characteristics

Elevation:

8000'

Aspect:

North

Slope Angle:

Alpha Angle:

Trigger:

Skier

Trigger: additional info:

Unintentionally Triggered

Avalanche Type:

Soft Slab

Weak Layer:

Facets

Depth (avg):

Depth Range:

6" to

Width:

40'

Vertical:

200'

General Comments

Skier in an experienced but fairly large group triggered small er soft slab avalanche while skiing. Was able to stand on bed surfac

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