Avalanche: Hidden Canyon

Observer Name
brandondodge
Observation Date
Friday, November 25, 2011
Avalanche Date
Friday, November 25, 2011
Region
Salt Lake » Big Cottonwood Canyon » Hidden Canyon
Location Name or Route
Hidden Canyon
Elevation
10,100'
Aspect
North
Slope Angle
36°
Avalanche Type
Hard Slab
Depth
2'
Width
80'
Vertical
250'
Comments

This is an interesting ob due to timing and i believe wind transportation. This slope is just outside the Area Boundary for Brighton Resort's Great Western Lift. (we call it the staging area). Ski cuts, including alot of jumping around, had been made on this slope tues 11/22, Weds 11/23 and I also had a report of a collapse in the area today about 10am. Another ski patroller visited the area about 11am on his day off and sent me this report and photos. High wind had been transporting snow over the ridge, stripping the windward slope to the ground. It is possible the witness to the collapse triggered the slide remotely leaving the area and simply did not hear or see it. Or the off duty patrol triggered it skinning the ridge remotely. Or it could have been additioal load from the high winds? I do know however this is a very large slide for the terrain and limited snowpack. Packing a punch when it ran throught the trees and continuing 150ft down slope. Definately enough to mame or kill a person. Like all the others slides of the past week or two the weakness was facets above the Oct crust.

"Broke to the ground, ran on facets above the crust. Small but deadly pocket 50ft outside our area boundary. 75x250, 6ft crown average 2ft, ran 100ft into trees, piled debris there and continued another 150ft" (report included photos posted here)

Coordinates