Avalanche: No Name Bowl 2/14/2010

Observer Name: 
Jim Harris
Observation Date: 
02/14/2010
Occurrence Date: 
02/14/2010
Occurrence Time: 
12:00pm
Region: 
No Name Bowl
Park City Ridgeline
Salt Lake
Location Name: 
No Name Bowl, Park City Ridgeline
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Avalanche Characteristics
Elevation: 
9300'
Aspect: 
North
Northeast
Slope Angle: 
35
Trigger: 
Skier
Trigger: additional info: 
Intentionally Triggered
Remotely Triggered
Sympathetic Release
Avalanche Type: 
Soft Slab
Weak Layer: 
Surface Hoar
Depth (avg): 
12"
Width: 
150'
Vertical: 
Unknown
General Comments

We had an interesting low angle tour today, triggering several soft slab avalanches throughout the day.  The most impressive was thi

P1090254.jpg
General Comments 2

The slide ran into the trees and left enough hangfire that no one volunteered to measure the start zone angle, though it appeared to be in the mid-30s

P1090251.jpg
General Comments 3

Later in the day, we watched this lone skier edge out into No Name where he triggered this soft slab.  The avalanche initiated below him and propagated along the ridgeline to the left edge of the photo.   The slope from the skier to the summit and onward to where the photo was taken had avalanched sometime during the storm, with the crown partially buried by last night's snow.

P1090265.jpg
General Comments 4

This avalanche ran perhaps 3/4 path, with the toe of the debris out of the frame.  Moments after taking this photo I remotely triggered yet another soft slab, similar in depth to the others, as I skied along the ridgeline.   Like the others, it propagated several hundred feet wide, entraining what appeared to be just about all of th un-avalanched new snow in the upper part of the drainage.

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