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Avalanche: Tony Grove 2/11/2010

Observer Name:

Jeremy Jenson

Observation Date:

02/11/2010

Occurrence Date:

02/11/2010

Occurrence Time:

Unknown

Region:

Tony Grove
Logan River
Logan

Avalanche Characteristics

Elevation:

9200'

and below

Elevation Range Maximum:

9200'

Elevation Range Minimum:

8200'

Aspect:

North

Northeast

East

Trigger:

Snowboarder

Trigger: additional info:

Intentionally Triggered

Unintentionally Triggered

Remotely Triggered

Sympathetic Release

Avalanche Type:

Soft Slab

Weak Layer:

Surface Hoar

Depth (avg):

12"

Width:

100'

Width Range:

50' to

200'

Vertical:

700'

Snow Profile

Snow Profile Comments:

Soft new snow slabs running easily on intact SH buried by light snow on Wednesday.

General Comments

A small drop off of a rock triggered the initial slide on a 30 degree slope - 10-12 inches deep and 100 feet or so wide. This slide

General Comments 2

General Comments 3

General Comments 4

Here is another little pocket that broke on us today. We were kind of expecting this to happen after our experiences earlier in the day- but realized the debris was running slow and was not very threatening on these short slopes.

The area to the left of the cliff broke right as the rider dropped in towards the cliff. The area to the right of the cliff broke when I landed the cliff drop on the lookers right side.

This was an E facing slope at around 8700 feet. About a foot deep and 50 feet wide.

You can see the slab buckling and rippling behind the rider as he drops.