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Forecast for the Ogden Area Mountains

Dave Kelly
Issued by Dave Kelly on
Monday morning, December 26, 2022
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 1-4' deep.
The avalanche danger is LOW on all other slopes.
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Weather and Snow
Under high clouds, temperatures are in the mid 30's F at the trailheads and in the high 20's F at the higher elevations. Winds are westerly in the mid teens MPH gusting to the high 20's MPH.
Today, mostly cloudy. Temperatures will be 36-40 F. Winds will blow from the southwest 15 gusting to 25 MPH.
The National Weather Service is forecasting an atmospheric river event to hit the Wasatch Range mid-day Tuesday through Thursday with 2.25"-3.25" of water and up to 36" of snow.
Recent Avalanches
There were reports of roof slides in Big Cottonwood Canyon neighborhoods yesterday which is similar to what you can expect to see in the Ogden Valley.
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Avalanche Problem #1
Persistent Weak Layer
Type
Location
Likelihood
Size
Description
The persistent weak layer (PWL) that formed in mid-November and was subsequently buried is still distinguishable in snowpits at all aspects and elevations. This buried weak layer of facets is suspect and I would not travel into steep terrain without conducting a series of snowpack tests and only exposing one person to a slope at a time.
Most avalanche activity on this layer has been on northerly facing terrain. This layer DOES exist in other places.
DeBruin's observation from the Cutler Ridge show a thinner snowpack with facets underneath wind drifted snow while Greg's snowpit from higher elevation on Cutler Ridge shows a much deeper snowpack. These two observations highlight variability within the same general area.
Photo (DeBruin)
Avalanche Problem #2
Wet Snow
Type
Location
Likelihood
Size
Description
With warm temperatures forecasted today and some lower elevation areas remaining above freezing for the last twelve hours I would not be surprised to see some wet loose activity with any hint of sun.
Stay away from any roof that is still holding snow as it may release and cause injury to adults. Be especially watchful of children playing near buildings.
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.
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