Avalanche: Steam Mill/White Pine Canyon Ridge 2/7/2011

Observer Name:

Weed/Archibald

Observation Date:

02/07/2011

Occurrence Date:

02/07/2011

Occurrence Time:

3:30pm

Region:

Steam Mill/White Pine Canyon Ridge
Steam Mill
Logan River
Logan

Location Name:

Steam Mill/White Pine Canyon Ridge

Location

41° 55' 14.952" N, 111° 35' 16.8216" W

Avalanche Characteristics

Elevation:

7400'

Aspect:

Northeast

East

and steeper

Slope Angle:

Trigger:

Snowmobiler

Trigger: additional info:

Remotely Triggered

Avalanche Type:

Hard Slab

Weak Layer:

Surface Hoar

Depth (avg):

Depth Range:

12" to

Width:

125'

Width Range:

100' to

150'

Vertical:

80'

General Comments

We remote triggered this nice Hard Slab avalanche from around 40' away. I was riding the sled on a popular backcountry route and Josh was skiing nearby on our way down for the day..... The avalanche failed and ran on buried persistent weak layers. In part of the crown, the avalanche stepped well below the very hard MLK ice-crust (1/16) running on the surface hoar/ nsf layer buried on 1/8/2011.

Video 1:

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