Avalanche: Pioneer Ridge 3/3/2011

Observer Name: 
Brackelsberg / Hart
Observation Date: 
03/03/2011
Occurrence Date: 
03/03/2011
Occurrence Time: 
6:00pm
Region: 
Salt Lake
Big Cottonwood Canyon
Pioneer Ridge
Location Name: 
Pioneer Ridge
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Location

40° 35' 0.078" N, 111° 34' 38.5068" W
Avalanche Characteristics
Elevation: 
10100'
Aspect: 
Northeast
Slope Angle: 
Unknown
Trigger: 
Skier
Trigger: additional info: 
Intentionally Triggered
Avalanche Type: 
Soft Slab
Weak Layer: 
New Snow
Depth (avg): 
10"
Width: 
30'
Vertical: 
175'
General Comments

We had already observed on Preston Peak that the new snow was not bonding well to the stout crust on the exposed ridge lines.  On the peak and ridge below the peak, we had some cracking and movement of the new wind loaded snow on the crust. We had not observed the same lack of bonding in sheltered areas and off the ridges.  We thought this issue may have been more prevalent on the southerly aspects due to wind loading from the strong NW winds.  

A ski cut on the north east facing aspect of Pioneer Ridge (descending down to the Pacific Highway run at Brighton) proved that this was more widespread that we had expected.  

Pioneer-Ridge-Avi-Small.jpg
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