UDOT PLANNED AVALANCHE CLOSURES!!

Observation: Days Fork

Observation Date
12/5/2023
Observer Name
Torrey & Champion
Region
Salt Lake » Big Cottonwood Canyon » Days Fork
Location Name or Route
Days Fork
Weather
Sky
Clear
Wind Direction
Southwest
Wind Speed
Calm
Weather Comments
Warm temperatures and strong solar input warmed sunny slopes. Expect a 1-inch melt-freeze crust on sunny aspects tomorrow AM. Calm winds even at ridgetop.
Snow Characteristics
Snow Surface Conditions
Melt-Freeze Crust
Rain-Rime Crust
Damp
Snow Characteristics Comments
Variety of crusts made for challenging skiing. Lower slope angles rode the best. In areas that have no seen any sun, there could still be some soft snow.
Red Flags
Red Flags
Recent Avalanches
Rapid Warming
Poor Snowpack Structure
Red Flags Comments
Widespread recent avalanche activity.
Avalanche Problem #1
Problem
Persistent Weak Layer
Trend
Decreasing Danger
Problem #1 Comments
The poor snowpack structure is evident. With the increased visibility today, we could see the widespread carnage of Little Cottonwood. It was harder to find mid and upper-elevation north and northeast-facing aspects that had not avalanched versus slopes that had. In Upper Days Fork, one large avalanche allowed us to get a better look at the crown. The new snow and wind-drifted snow sits atop multiple layers of weak faceted snow. In the Upper Days avalanche, the slide failed not at the snow snow/old snow interface but 10 cm down into the facets, in and older interface of weak faceted snow. The weak grains were slightly more extensive and developed at this failure point (2mm).
Though these avalanches seem as though are becoming harder to trigger, I would continue to suspect of steep slopes where I know these weak grains exist. This problem doesn’t seem like it will be going anywhere anytime fast.
Any areas where the recent winds have loaded this weak snow has the potential to step down into deeper weak layers in the snowpack, creating a very large and dangerous avalanche. The wind zones remain especially suspect.
Upper Day's Fork crown. NE Aspect, 10300'.
Recent avalanche activity
Avalanche Problem #2
Problem
Wet Snow
Trend
Decreasing Danger
Problem #2 Comments
Southerly-facing slopes took on a significant amount of warmth today and created easy-to-provoke wet-loose avalanches.
Today's Observed Danger Rating
Considerable
Tomorrows Estimated Danger Rating
Considerable
Coordinates