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Forecast for the Salt Lake Area Mountains

Greg Gagne
Issued by Greg Gagne on
Friday morning, November 27, 2020
The avalanche danger is LOW and we have generally safe avalanche conditions. Sluffing is the new snow is likely on slopes approaching 35 degrees or steeper, and pockets of wind-drifted snow may be found in isolated, upper-elevation terrain. Getting caught in even a small avalanche could have significant consequences with the risk of hitting a rock, stump, or downed timber.
Low
Moderate
Considerable
High
Extreme
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Weather and Snow
Skies are clear and winds are out of the north and have increased slightly overnight, but are still generally light, averaging in the teens, with gusts in the 20's mph above 10,000'. Temperatures range from the high single digits to mid teens F.
Snowpack depths above 9500' in the central Wasatch are 18-24", and the 3-6" of low-density snow from Wednesday/Thursday greatly improved riding conditions.
Today will feature clear skies and sunshine with temperatures rising into the 20's F. Winds will be northerly, with gusts in the teens and low 20's mph along uppermost ridges.
Recent Avalanches
On Thursday, widespread sluffing in the new low-density snow was reported on steeper aspects. Recent observations can be found by clicking here.
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Avalanche Problem #1
Normal Caution
Type
Location
Likelihood
Size
Description
The overall avalanche danger is Low, but there are two things to watch for today:
- sluffing in the 3-6" of low-density is likely in terrain approaching 35 degrees or steeper, especially on northerly slopes;
- it is also possible to find small pockets of wind-drifted snow in isolated terrain in the uppermost elevations.
As my partner noted on Thursday, although the avalanche danger may be Low, the risk of hitting rocks is extreme, and the recent snowfall has disguised rocks and other buried hazards such as stumps and downed timber.
Looking Ahead: Although our current snowpack is thin, there is widespread variability. Strong winds in the middle of November scoured many slopes, while others got a firm wind slab compressed into the terrain. Since that time, we have had several cold and clear nights that promote a "faceting" process which weakens the snowpack, turning the snow crystals into sharp, angular, weak grains. With high pressure forecasted for at least the next week, this faceting process will continue. For now, this is not a problem, but it may be an issue once we get a load of storm or wind-driven snow on top of this weak snowpack structure.
General Announcements
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.