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Forecast for the Uintas Area Mountains

Craig Gordon
Issued by Craig Gordon on
Thursday morning, March 4, 2021
Today you'll find MODERATE avalanche danger above treeline in upper elevation terrain, especially in the wind zone. While more the exception than the rule, human triggered avalanches breaking into old snow near the ground are POSSIBLE, particularly on steep, wind drifted slopes facing the north half of the compass and especially in terrain with an easterly component to its aspect. Remember- any avalanche that breaks to weak layers of snow near the ground will result in a deep, dangerous avalanche that'll instantly ruin your day.

Steep, sunny terrain will take on heat fast today and the danger for wet slides and sluffs rises to MODERATE with daytime heating. Human triggered wet snow avalanches are POSSIBLE during the heat of the day.

Below treeline the avalanche danger is LOW and human triggered avalanches are UNLIKELY. Low danger does not mean "no danger". Avalanches can still happen which is why we always carry avalanche rescue gear and expose only one person at a time to avalanche terrain. To avoid avalanches completely, take advantage of all the terrain in the Uintas that is less than 30 degrees in steepness where avalanches don't happen.
Low
Moderate
Considerable
High
Extreme
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Weather and Snow
Nowcast-
A band of thick clouds rolled into the region late last night and light snow began falling right around 03:00 with just a trace or maybe even a few traces stacking up in favored locations. Currently, temperatures are in the low to mid 20's. East and southeast winds blow in the 20's along the high peaks. It might be a day to get that garage cleaning project done and wait for some fresh snow to smooth out old tracks and cushion the crusts.
Forecast-
Look for mostly cloudy skies, light snow showers, and temperatures climbing into the 30's. Winds shift to the northwest later today, but remain reasonable, blowing in the 20's and 30's along the high peaks.
Futurecast-
Sunny skies and warm temps are on tap for Friday and Saturday and a dry, cold front slides through the region Sunday. Better chances for snow materialize early next week... we'll keep you posted.

Looking for real-time temps, snow, or wind?
Click here and then on the "western Uinta" tab for western Uinta specific, weather station network.
Recent Avalanches
No significant avalanche activity to report since Sunday. Above, I visited a large slide in the Upper Humpy Drainage which broke 4'-6' deep and was initiated with explosives.

More obs, trip reports, and avalanches found here.
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Avalanche Problem #1
Persistent Weak Layer
Type
Location
Likelihood
Size
Description
A tale of two snowpack structures. The left image and an excellent ob from Bill and Andy in Upper Humpy Basin represents a deep pack that's gaining strength and it would be difficulty to trigger a slide. The right image and an equally excellent ob from Ted on the east side of the range in Boundary Creek illustrates a thinner pack and the type of setup where we could still trigger a slide that breaks to old snow.
The Valentines storm is settling and gaining strength, as a matter of fact, getting around is seamless because the snow will feel solid under our skis, board, or sled... and that's good news. But it's a double edge sword and we need to think not only about the snow we're riding in, but also the snow we're riding on. And we need to remember most of our winter snowpack is resting on an early season persistent weak layer (PWL) or weak, sugary facets about a foot above the ground.... think strong snow on weak snow. The PWL exists on most slopes except those facing due south and southwest.
Avalanche conditions remain deceptively tricky and here's why-
The probability of triggering a deep dangerous avalanche is generally low, but the consequences are high because the entire seasons snowpack will crash down on top of you if you have misjudged the snowpacks stability. Now, you wouldn't go to Vegas and bet against the house with those odds right? Personally, I don't entirely trust anything in the snowpack I can't manage, so I'm going to continue avoiding terrain that harbors questionable snowpack structure. Of course the usual suspects come to mind... steep, rocky, upper elevation slopes facing the north half of the compass is bulls-eye terrain and should be considered suspect. With all the great coverage across the range and so many other riding options, there's no reason to roll the dice or pull on the dogs tail.
What to do? Unfortunately it's just a season with a dangerous snowpack. There's no way around that fact, and the key to longevity is avoiding big, open terrain, especially those in the Alpine that are steeper than about 30 degrees.
With such a supportable slab on top of the PWL, a slope may have many sets of tracks on it and still slide if someone hits a thin spot in the snowpack near a rock or bush hidden under the snow, like in the image above.
Avalanche Problem #2
Wet Snow
Type
Location
Likelihood
Size
Description
Damp snow dribbling off steep cliffs bands like in the image above is a good indicator that sunny slopes are heating up. Weston D found a good deal of both old and new wet activity yesterday... his great insights to spring conditions are found here.
Today's shallow, fresh coat of white paint will take on heat fast, even with just a little hint of sun. So, if you're feeling like an ant under a magnifying glass so is the snow. As the surface snow becomes damp, manky, or unsupportable you'll want to get off of and out from steep sun baked slopes, and steer clear of terrain traps like gullies where even a small avalanche can stack up deep piles of debris.
Additional Information
I will update this forecast by 7:00 AM tomorrow, Friday, March 5th.
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General Announcements
If you see or trigger an avalanche or just wanna let me know what you're seeing you can reach me directly at 801-231-2170 or [email protected]
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.