Ogden Avalanche Advisory

Forecaster: Evelyn Lees


Dangerous avalanche conditions are occuring or are imminent. Backcountry travel in avalanche terrain is not recommended.

The Avalanche Warning has been continued for the Wasatch, Bear River and western Uinta ranges. The combination of strong winds and snow has overloaded preexisting buried weak layers in the snowpack. Large, dangerous human triggered avalanches are likely. Travel in backcountry avalanche terrain is not recommended.


Danger by aspect and elevation on slopes approaching 35° or steeper.
(click HERE for tomorrow's danger rating)

Danger Rose Tutorial

Bottom Line for the Ogden area mountains:

The avalanche danger is CONSIDERABLE, with pockets of HIGH, on and below mid and upper elevation slopes, especially those facing west through north through east and southeast, where human triggered avalanche are probable on slopes of about 35 degrees and steeper, especially with recent drifts of wind blown snow.  Travel in avalanche terrain is not recommended. Only people with extensive skill, experience and local knowledge should travel in the backcountry, and travel should be on gentle slopes and ridge lines well away from avalanche paths.


Under cloudy skies, temperatures are in the Ogden mountains range form 12 degrees to just below zero. Storm snow totals are in the 6 to 11” range. The winds are the bigger story – pre frontal winds raged from the southwest, 25 to 35, with gusts in the 60's and 70's. Even after frontal passage, winds remained brisk, and are still in the 15 to 30 mph range from the northwest, with the highest peaks gusting into the 40's. The wind chill calculations are coming in at -25 degrees.


Activity form the Ogden mountains seemed limited to new snow wind drifts yesterday.  In the Park City mountains, numerous natural avalanches were spotted. Square Top, the main bowl of Scott's Hill, closed areas of Jupiter Peak, and High Dutch (at 10 am) all ran, averaging 1 to 3 feet deep, 100 to 600' wide. The most widespread activity was on slopes from 8,500' to 10,000', east to northeasterly facing, and most slides involved the crust. There was also a short run in Little Pine, a south facing path in LCC. Avalanche control work at the resorts released some far running 2 to 4' deep hard slabs. New snow soft and hard wind drifts were very sensitive, cracking on test slopes. One new snow slab released with a ski cut stepped down to the ground beneath a cliff band.


      Over the next 24 hours.

There is nothing too remarkable about yesterday's storm - it's the preexisting snow pack that's grabbing our attention. The snow pack's base structure is as weak as our economy, and similarly, it's going to get worse before it gets better. The current combination of persistent facets and a crust is dangerous.  In the Ogden moutnains, some slopes could be about ready to go, and are just waiting for a trigger.  Elevation and aspect are the key - the upper elevation, wind drifted shady slopes are the most likely place to trigger a slide.  Reports of wide spread cracking is an indication of the persistent weaknesses.   Experienced travelers: use your local knowledge to find safe turns on low angle slopes and shallow ridge lines, well away from runout zones.


      Over the next 24 hours.

The fresh wind drifts are very sensitive in their own right. Strong southwest to northwesterly winds have been blowing and drifting the snow for over 24 hours, wild shooting cracks were common on test slopes yesterday. Today's steady wind will continue to load some of the starting zones. Drifts will be most common on slopes with an easterly component, but watch for cross loading around terrain features such as breakovers and subridges.


A moist and moderately strong west northwest flow will remain over northern Utah this morning, producing mostly cloudy skies and light snow. The northwesterly winds will remain brisk, in the 15 to 25 mph range, with gusts in the 30's. Across the highest peaks, add another 10 mph for the averages, and 20 mph for the gusts. With temperatures stuck in the single digits, windy areas will be frostbite territory. Partly cloudy skies tonight, with decreasing winds, and temperatures near zero again. A weak ridge will move in tonight through Sunday ahead of the next storm system, which is due Monday. Of interest, temperatures will rapidly warm into the 20's on Sunday.


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The Wasatch Powderbird Guides - for information, call them at 801-742-2800 or go to their daily blog

UDOT highway avalanche control work info can be found by calling (801) 975-4838. Our statewide toll free line is 1-888-999-4019 (early morning, option 8).

The UAC depends on contributions from users like you to support our work.  To find out more about how you can support our efforts to continue providing the avalanche forecasting and education that you expect please visit our Friends page.

If you’re getting out and see anything we should know about please let us know.  You can leave a message at (801) 524-5304 or 1-800-662-4140, or email us at uac@utahavalanchecenter.org. (Fax 801-524-6301).

The information in this advisory is from the U.S. Forest Service, which is solely responsible for its content.  This advisory describes general avalanche conditions and local variations always occur.

Brett Kobernik will update this forecast by 7:30 on Sunday morning.

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

This advisory provided by the USDA Forest Service, in partnership with:

The Friends of the Utah Avalanche Center, Utah Division of State Parks and Recreation, Utah Division of Emergency Management, Salt Lake County, Salt Lake Unified Fire Authority and the friends of the La Sal Avalanche Center. See our Sponsors Page for a complete list.