Avalanche: Butler Fork 4/4/2010

Observer Name: 
Jesse
Observation Date: 
04/04/2010
Occurrence Date: 
04/04/2010
Occurrence Time: 
Unknown
Region: 
Salt Lake
Big Cottonwood Canyon
Butler Fork
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Avalanche Characteristics
Elevation: 
8000'
Aspect: 
West
Slope Angle: 
37
Trigger: 
Skier
Trigger: additional info: 
Remotely Triggered
Avalanche Type: 
Soft Slab
Weak Layer: 
Density Change
Depth (avg): 
12"
Width: 
40'
Vertical: 
Unknown
General Comments

Very little wind today. The small pocket where slide occured appeared to be wind affected from the past few days.

Medium to heavy density powder, with small pockets of wind-affected snow.

By skiing on the small ridge adjoining the slide area, we were able to avoid getting caught. Conditions were good, with nice powder on Northwest and West-facing slopes with less wind and sun exposure. We skied subtle ridges on these slopes, especially in the more open areas above the aspen glades. We weren't overly concerned because of the west-facing aspect and overall lack of wind-affected snow. There were very few areas where the wind had impacted snow quality, but they were out there. And it appears we hit just the wrong spot in one of these small pockets.    

I would say the danger rating should have been Moderate with pockets of Considerable on West-facing slopes. When we looked this morning it was Low with pockets of Moderate on West-facing slopes. Since the slide was triggered remotely, it appears these wind-affected areas are very sensitive.


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