Ogden Avalanche Advisory

Forecaster: Brett Kobernik


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

Danger Rose Tutorial

The avalanche danger will be increasing today. We start out with a MODERATE danger for human triggered wind slabs in the mid and upper elevation slopes of about 35 degrees in steepness or more. The danger will be on the rise as the new snow piles up especially during any period of heavy snowfall. Windy conditions will enhance slab formation and add to the danger as well. Natural avalanches could occur and the avalanche danger may reach CONSIDERABLE or potentially HIGH with enough snow and wind. Avoid all avalanche runnout zones during these periods.


Big changes in the weather overnight and expected today. First off, the winds switched to the southwest and have ramped up into the 50 and 60 mph range at many locations at the 10,000 foot level. Gusty readings at some lower stations are telling me things are getting stirred up in the mid and lower elevations as well. The warmest free air temperatures moved in overnight resulting in minimal cooling. In fact, after some initial cooling early Saturday evening, most stations recorded an increase in temperature overnight with readings around 40 at 7000 feet, above freezing at 9000 and in the upper 20s at the higher locations.


Avalanche activity on Saturday was about what was expected with a few human triggered wind slabs and some wet activity as well. One wind slab triggered in the Y Couloir did run the majority of that path. Other human triggered wind slabs were fairly harmless. Natural wet activity never reached an alarming rate on Saturday but there was a fair amount at the mid and lower elevations with a few debris piles reported up to 5 feet deep. (Field Day: Drew Hardesty)


      Over the next 24 hours.

The overnight winds will most likely have formed some fresh drifts that may be sensitive to the weight of a person today. I don’t expect that there’s a whole lot of natural activity occurring but I could see people finding a number of wind slabs to crack out this morning. The most likely aspects are north through east for these fresh drifts but the stronger winds will most likely have cross loaded many aspects. Watch for hollow sounding pillows and a punchy feel to the snow indicating the presence of these fresh drifts. Slope cuts should be used before getting on anything steep and you may want to just avoid the steeper slopes if you note a fresh drift. Keep in mind these drifts will get covered up with new snow pretty quick.


      Over the next 24 hours.

The next concern will be the expected new snow that should start falling this morning. Snowfall could be heavy at times which will make the avalanche danger increase quickly. It looks like there will be some gusty winds with the snow as well which will enhance the avalanche danger also by increasing slab formation. A few avalanche workers have noted some faceted grains that formed over the last few days which could act as a potential weak layer in some locations. Be sure to be diligent with hand pits and stability tests as the snow piles up to identify any shear planes that may produce slab avalanches.


We’ve probably already seen the high temps for the day and things should continue to cool through the day into the 20s. Winds will shift to the northwest with the frontal passage and remain somewhat gusty with strong gusts along the ridgetops. About a foot of snow is expected and post frontal snowfall in a northwest flow should linger into tonight.


Wasatch Powderbird Guides didn’t get out on Saturday and won’t be out today. Check their operations planning page is here.

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Beacon training parks are up and running! There is one at Snowbasin, one on the Park City side at the top of Canyon’s gondola toward the Tombstone lift, one in Little Cottonwood near the Snowbird parking structure on the bypass road, and in Big Cottonwood a training park is at the west end of Solitude's lower parking lot.

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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).

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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.

Evelyn Lees will update this advisory by 7:30 tomorrow 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.