Avalanche forecast

Salt Lake

Issued Dec 25, 2022valid to Dec 26, 2022Utah Avalanche Center

Avalanche danger

Alpine
Treeline
Below treeline

Out of date — this forecast expired 4 years ago. You’re viewing past conditions, not the current bulletin.

Highlights

The avalanche danger is MODERATE on all slopes facing northwest through north and east and mid and upper elevation slopes facing southeast. Human-triggered avalanches are possible and avalanches may break down 1-4' deep.

The avalanche danger is LOW on all other slopes, although isolated pockets of reactive wind-drifted snow may be found on all aspects at the upper elevations.

Avalanche problems

Persistent Slabs
N
NE
E
SE
S
SW
W
NW
Alpine
Treeline
Below treeline
Likelihood
Possible
Size
3
Our persistent weak layer (PWL) of faceted snow that formed during the mid-November drought is buried underneath 2-4' of snowfall and wind-drifted snow and avalanches failing on this buried PWL were last reported over a week ago. On my field day yesterday, my partner and I were focusing at the mid-elevations and were finding the PWL continues to slowly gain strength (video discussion below). UAC director Mark Staples was in Pink Pine yesterday and was also finding increasing stability on slopes with the PWL.

Although we are moving in the right direction, spatial variability exists and human-triggered avalanches are possible, especially on slopes that were wind-loaded during the strong wind event from this past Wednesday and Thursday.

Recent Activity

No avalanche activity was reported from Saturday. Control work on Friday from resorts on the Park City ridgeline produced avalanches on wind-loaded slopes facing south and southeast.

Snow and Weather

A trace to around an inch of dense snow fell yesterday, with a thin rime crust on many slopes.

Temperatures this morning are in the 20's F. Winds are from the northwest and have increased slightly overnight. Along exposed, mid-elevation ridges, wind speeds are averaging in the low teens with gusts in the 20's mph, while averaging in the 20's mph with gusts around 40 mph at the upper-most elevations. Skies are overcast with a layer of low-level clouds.

For today, mostly-cloudy skies with temperatures rising into the low 30's F. The northwest winds will average in the teens with gusts in the 20's at the mid elevations and average in the 20's with gusts around 40 mph at the highest elevations. We may get an inch or so of damp snow with possible riming.

Monday will bring warmer temperatures ]ahead of a potentially potent atmospheric river event beginning Tuesday. Weather looks to remain active through the end of the year.

Our Week in Review highlights significant snow and weather events from the past week.

General Announcements

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This information does not apply to developed ski areas or highways where avalanche control is normally done. This forecast is from the U.S.D.A. Forest Service, which is solely responsible for its content. This forecast describes general avalanche conditions and local variations always occur.

Observations and Avalanches

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