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Avalanche: Upper Horse Creek 2/20/2010

Observation Date:

02/23/2010

Occurrence Date:

02/20/2010

Occurrence Time:

Unknown

Region:

Upper Horse Creek
Moab

Location

38° 27' 20.9052" N, 109° 14' 21.4512" W

Avalanche Characteristics

Elevation:

12000'

and below

Elevation Range Maximum:

12000'

Elevation Range Minimum:

11000'

Aspect:

Northeast

Slope Angle:

Trigger:

Natural

Trigger: additional info:

Repeater

Avalanche Type:

Soft Slab

Weak Layer:

New Snow/Old Snow Interface

Depth (avg):

4.5'

Width:

3/4 mile

Vertical:

Unknown

Vertical Range:

500' to

1250'

General Comments

Massive slide. R4/5D3+. Difficult to see most of crown at and below convexity. Debris pile was huge, covering the entire upper canyon. This was possibly D4. So large we just couldn't see it all. Portions of crown filled in, other 4-5 ft deep.

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