Observer Name
Alta Avalanche Office/UAC
Observation Date
Saturday, January 28, 2023
Avalanche Date
Saturday, January 28, 2023
Region
Salt Lake » Little Cottonwood Canyon » Grizzly Gulch » Patsy Marly
Location Name or Route
Petticoat
Elevation
9,200'
Aspect
West
Slope Angle
36°
Trigger
Skier
Avalanche Type
Soft Slab
Avalanche Problem
Wind Drifted Snow
Weak Layer
New Snow/Old Snow Interface
Depth
2'
Width
300'
Vertical
250'
Snow Profile Comments
Snow profile on a west facing 39 degree slope, 9449'. Height of snow in this location was 290cm. Temperatures show a healing snowpack and this new/old snow weakness will have to be watched to see if it settles out.
Comments
Photo 1- Bed surface made up of crust facet interface 64cm from the surface
Photo 2- Decomposing faceted stellars on bed surface
This avalanche occurred above the summer road very close to the uphill skin track into Grizzly Gulch.
If you trigger or see an avalanche adjacent to the road or one of the ski areas and are sure no one was caught in the avalanche, call the nearest mountain dispatch and alert them to the situation, this will allow search and rescue teams to stand down, preventing them from being subjected to unnecessary hazard.
What to do if you see or trigger an avalanche - get more information HERE.
Coordinates