Avalanche: Super Bowl 3/14/2010

Observer Name: 
Grant Helgeson/Ted Scroggin
Observation Date: 
03/16/2010
Occurrence Date: 
03/14/2010
Occurrence Time: 
Unknown
Region: 
Super Bowl
Moffit Basin
Uintas
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Location

40° 50' 2.1372" N, 111° 0' 9.4032" W
Avalanche Characteristics
Elevation: 
10100'
Aspect: 
Northeast
Slope Angle: 
38
Trigger: 
Snowmobiler
Trigger: additional info: 
Unintentionally Triggered
Avalanche Type: 
Soft Slab
Weak Layer: 
Surface Hoar
Depth (avg): 
22"
Width: 
50'
Vertical: 
200'
General Comments

Here's a little more information on the small avalanche Ted & I found in Superbowl.  The surface hoar is still in play in some areas.

General Comments 2

Ted walks us through a shovel shear and compression test near the crown.

Video 2: 
General Comments 3

After the initial failure at the ground in our ECT, we noted a second failure plain in the mid-pack.  Upon further investigation, we discovered a folded over buried surface hoar layer was the weakness associated with this avalanche.

Video 3: 
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