Observation: Gunsight

Observation Date
11/7/2018
Observer Name
mark white
Region
Salt Lake » Little Cottonwood Canyon » Alta Ski Area » Gunsight
Location Name or Route
Gunsight, Alta
Weather
Sky
Few
Wind Direction
Northwest
Wind Speed
Light
Weather Comments
Cold and clear with light winds
Snow Characteristics
Snow Surface Conditions
Faceted Loose
Wind Crust
Snow Characteristics Comments
The surface of the snow has become faceted with the last few cold clear nights, and the crust below the surface is starting to disentagrate in high shady N facing terrain but still fairly stout on E and sunny NE, meltfreeze crust or dirt on S and W
Red Flags
Red Flags
Cracking
Collapsing
Comments
Our shallow snowpack continues to weaken with high pressure and cold temperatures. Not to worrisome now but it’s not a good set up for future snow loads. I was a bit surprised today when I skinned up to Gunsight via High Greeley got within about 70ft of the top and decided to boot up the choke to the top. As soon as I stepped out of my skis I heard a loud womp and realized I had collapsed the whole upper slope, and left a 25ft shooting crack above me. The slope did not move due to a lack of a sufficient slab but it got my attention. The slope failed under the crust on the underlying loose facets, I’m sure being in a loose rocky area helped with the collapse. The upper portion of gunsight was a bit wind loaded and the snow was 20 inches or so deep when I stepped out of my skis. Not a real concern for now but a hint of what’s to come on these high shady north’s when we get more of a load.
photos: the crack and location
Today's Observed Danger Rating
Low
Tomorrows Estimated Danger Rating
Low