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Forecast for the Salt Lake Area Mountains

Mark Staples
Issued by Mark Staples on
Thursday morning, March 19, 2020
Today the avalanche danger is MODERATE at upper elevations where the new snow could produce loose snow sluffs. A few slabs of new snow could possibly avalanche where it has been drifted by winds just under ridgelines and cornices. The danger at mid and low elevations is LOW.
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Weather and Snow
Overnight an additional 1-2 inches of snow fell. Combined with yesterday's snow, totals since yesterday morning are 6-12 inches (0.5-0.9 inches of water).
Temperatures this morning range from the upper 20s to upper teens F depending on elevation. Winds are about as calm as they can get and are only blowing 2-5 mph from the W at 11,000 feet.
Today, an area of low pressure will be parked over Nevada bringing cloudy skies and intermittent snowfall. Total snow accumulations should only be a few inches but up to 4 inches is possible. Air temperatures should only warm into the mid 30s F around 8000 feet. Winds should increase some this morning but still remain mostly light from the northwest.
The new snow yesterday started very dense but finished lighter which made the riding conditions quite good. Some sunshine (photo below) getting through the clouds warmed south and west facing slopes yesterday afternoon making the snow a little damp. That snow should have a slight ice crust this morning.
Recent Avalanches
Yesterday there was some sluffing of the new snow and a few shallow soft slabs of wind drifted snow (photo - Grainger). On Tuesday a large chunk of cornice fell in upper Days Fork and carried some snow downhill with it. Cornices are quite large this time of year. When walking on a ridgeline, it's sometime easy to not realize that you are walking on top of a huge, overhanging cornice. Don't take chances with these unpredictable monsters that can break at random times, often further back than you think.

No avalanches were observed as a result of yesterday's earthquake.

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Avalanche Problem #1
New Snow
Type
Location
Likelihood
Size
Description
Yesterday's new snow was initially very dense but finished lighter (photo below). This new snow should be mostly bonded and stable today with some sluffing of the new snow possible especially where it rests on old snow that is either firm or icy. At upper elevations with closer to a foot of new snow, watch for this sluffing.
Although winds have been light, there may be a few isolated drifts of wind-blown snow that could avalanche but these will be confined to just under ridgelines and cornices.
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.