Forecast for the Ogden Area Mountains

Issued by Mark Staples for Thursday, April 18, 2019 - 7:09am
Today on East, South, and West facing slopes, the danger will rise to CONSIDERABLE as the snow warms and becomes wet. Northerly facing and shaded slopes will have a MODERATE danger.

Greg will update the Salt Lake City, Ogden and Provo forecasts Friday morning (April 19th) by 7:30 am.
Low
Moderate
Considerable
High
Extreme
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Special Announcements
The last scheduled forecast will be Sunday, April 21st. We will issue intermittent updates with each snowfall or significant weather event through the rest of the month. We will continue posting observations.

Resorts closed for the season are now backcountry terrain - no avalanche mitigation is being done. Utah ski resorts are on a mix of private and public Forest Service land, and each resort has a different uphill policy - contact the individual resort for details.
Weather and Snow
Temperatures: Yesterday's high temperatures ranged from the low 30s to low 40s F depending on elevation. This morning at 5 a.m., temperatures are about 7 degrees warmer than yesterday morning and are mostly in the low 30s F.
Wind: This morning westerly winds are averaging 10-15 mph with gusts of 20-30 mph mainly at upper elevation ridges. Strong south winds blew late Monday night mostly before snow fell on Tuesday.
Snow: Tuesday's storm delivered 6-10 inches of warm dense snow at upper elevations. Low elevations received a good dose of rain.
Today's weather: Strong sunshine will allow mountain temperatures to easily climb into the 40s and 50s F. It's hard to say for sure but clear skies should help keep the snow cool on upper elevation, northerly facing slopes today. The snow on most other slopes became wet yesterday and should have a crust on top this morning that will quickly melt. Winds will shift a little more to the north and calm a bit by afternoon.
Recent Avalanches
Yesterday most wet avalanches occurred above 8000 feet when strong sunshine quickly warmed the new snow and produced wet loose slides. Lower elevations received plenty of rain on Tuesday and the snowpack had already adjusted to being wet.
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Avalanche Problem #1
Wet Snow
Type
Location
Likelihood
Size
Description
Today, wet avalanches will occur predictably as the snow warms and becomes wet. Most of these will be wet loose slides. What this means is that the avalanche danger from wet avalanches starts LOW this morning but rises to CONSIDERABLE as the snow heats up. Most wet slides will occur on mid and upper elevations slopes facing east, south, and west. Wet avalanches are possible but less likely at low elevations that received rain with Tuesday's storm and have already gone through a cycle of wet slides.
Avalanche Problem #2
Normal Caution
Type
Location
Likelihood
Size
Description
If you find some dry snow on the highest northerly facing slopes, it may be possible to trigger a lingering wind drift or new snow slide. Signs of wind drifts include cracking of the snow and looking for and avoiding smooth, rounded pillows of snow. Dig down and look at the layering. After the day has heated, any dry snow slides will turn into wet slides as they move downhill.
New and old cornices may break back further than expected and even from a distance. Stay well back from corniced edges when traveling on ridge lines and avoid travel beneath them.
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.

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