Avalanche: Cardiac Ridge

Observer Name
White, Kobernik
Observation Date
Monday, March 4, 2013
Avalanche Date
Monday, March 4, 2013
Region
Salt Lake » Big Cottonwood Canyon » Cardiff Fork » Cardiac Ridge
Location Name or Route
Cardiac Ridge
Elevation
10,800'
Aspect
East
Slope Angle
38°
Trigger
Skier
Trigger: additional info
Unintentionally Triggered
Avalanche Type
Soft Slab
Avalanche Problem
Wind Drifted Snow
Weak Layer
New Snow/Old Snow Interface
Depth
10"
Width
60'
Vertical
500'
Comments

The avalanche occurred of the top of Cardiac Ridge, 50 to 60ft wide wind load, soft slab, failing on the sun crust that formed on Saturday. Deepest part of the crown was 10 inches, ended up running quite a ways because of the slick crusted bed surface. Kowboy was the first skier in, he cut the slope with no results and proceeded to ski to the bottom. Makoff was second in, he teased the cat a little more into the wind slab and it released about 20ft above him, he dug into the bed surface and it washed around him. Not life threatening, ran fairly slow and did not entrain a ton of snow but worth mentioning. Only wind slabs we were finding that were suspect were right at the top of the highest ridges, and easily managed with ski cuts. Pics: crown, full slide, Brad pondering his mess.

FORECASTER COMMENTS (kowboy): The wind slabs were very easy to recognize prior to getting onto them. If you were aware they were present, they did not pose much threat and were very manageable for those with good avalanche experience. This was the case at the top of Cardiac Ridge. I was actually surprised that I was not able to get this pocket to release with the couple of ski cuts I did. Brad tickled it just slightly deeper than I and it released.