Avalanche: Grizzly Gulch 11/20/2011

Observer Name:

Greg

Observation Date:

11/20/2011

Occurrence Date:

11/20/2011

Occurrence Time:

2:30pm

Region:

Salt Lake
Little Cottonwood Canyon
Grizzly Gulch

Location Name:

Grizzly Gulch

Location

40° 35' 32.3412" N, 111° 36' 51.8364" W

Avalanche Characteristics

Elevation:

9600'

Aspect:

North

Slope Angle:

Trigger:

Skier

Trigger: additional info:

Unintentionally Triggered

Avalanche Type:

Soft Slab

Weak Layer:

Ground Interface

Depth (avg):

3.5'

Width:

20'

Vertical:

80'

General Comments

A group of three was heading through the trees on a steep north facing slope. The first skier triggered the avalanche. Luckily, he was not caught up in it or he would have tumbled over some rocks. It was a small 3.5' slab slide. The crown was around 15-20' and the runout was around 80'. The weak layer was the rocks beneath the slab. No one was hurt.

Forecaster comment: the weak layer was probably faceted snow near the ground in the rocky terrain (similar to most other recent slides on that aspect and elevation)

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