Forecast for the Uintas Area Mountains

Craig Gordon
Issued by Craig Gordon on
Tuesday morning, December 22, 2020
An evolving storm creates dangerous avalanche conditions at upper elevations. Once triggered, todays avalanches will break deeper and wider than you might expect.
In the wind zone, at and above treeline, CONSIDERABLE avalanche danger exists. Human triggered avalanches are LIKELY on steep, wind drifted slopes. Terrain facing the north half of the compass, and particularly slopes with an easterly component to its aspect should be avoided.
Mid elevations offer MODERATE avalanche danger on steep slopes facing the north half of the compass and human triggered avalanches are POSSIBLE.
In either case, shallow snow cover and low tide conditions barely hide natural obstacles like stumps and rocks, so, triggering even a small slide can lead to an instant buzz-kill and a season ending injury.
LOW avalanche danger is found on mid and low elevation slopes, particularly those facing south, but snow cover is super thin.
Low
Moderate
Considerable
High
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Weather and Snow
Nowcast-
Skies remained clear overnight and temperatures warm, registering in the low to mid 30's. Southwest winds are the big headline news, bumping into the 30's around 10:00 last night, and continuing to ramp into the 40's and 50's early this morning. No significant new snow to report in nearly a week and total snow depths throughout the range average just about two feet in depth, so the Uinta's are still quite thin and travel is sorta limited to road rides and grassy slopes.
Forecast-
Clouds thicken and southwest winds crank into the 50's with gusts to 70 mph as a strong cold front slams into the mountains today. Temperatures remain mild, but as the cold front reaches the state right around lunchtime, the bottom falls out and snowfall increases in intensity. Northwest winds remain strong through tonight with hourly averages in the 30's and 40's.
Futurecast-
The storm winds down Wednesday morning and I think 6"-8" of snow across the range is a good bet. High pressure builds for the latter half of the week with a slow warming trend on tap.
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 new avalanche activity to report.
To view trip reports and recent avalanche activity, simply click here.
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Avalanche Problem #1
Persistent Weak Layer
Type
Location
Likelihood
Size
Description
Nothing has changed with our persistent weak layer, as a matter of fact, it might be slightly more deceptive as the snowpack slowly adjusts to last Thursday's storm. And now it's gonna get tested with more snow and wind. So here's the setup. The current snowpack structure mirrors an upside-down cake... think, stronger snow on weaker snow. This type of layering leads to tricky avalanche conditions, where we can trigger slides from a distance or from adjacent slopes, and where we can pull the entire log pile down on top of us. And once triggered, today's avalanches may break wider and deeper than you might expect.
But you don't have to ride blind... so, tweak small test slopes like the one in the image above, looking for and listening to signs of unstable snow like whoomping sounds and sudden collapses of the snowpack or shooting cracks in front of your skis, board, or sled. And of course the biggest clue of all... recent avalanches, especially on the same types of slopes you wanna ride on.
Avalanche Problem #2
Wind Drifted Snow
Type
Location
Likelihood
Size
Description
Our main man with the Uinta plan, Ted Scroggin, stomped around the Double Hill zone Saturday, catching this fresh wind slab peeling off the ridge, which in turn, triggered a deeper slide as it crashed on the slope below.
Winds are cranking and they'll have no problem creating yet another round of fresh drifts, reactive to our additional weight. Found mostly on the leeward side of upper elevation ridges, you'll also want to be on the lookout for drifts forming lower downslope than you might expect, as well as cross-loaded terrain like chutes and gullies. In either case, it's an easy and mostly manageable avalanche problem to avoid by simply steering clear of any fat, rounded piece of snow, particularly if it sounds hollow like a drum. And remember... our snowpack is super shallow and triggering even a small slide can take you for a body-bruising ride through rocks and stumps barely hidden under the thin snowpack.
Additional Information
You know the program... roadside attractions are still an easy grab and just 'cause you can see it from the car doesn't mean it's safe or you're good to go. And remember, our front-line health care workers are maxed out. So, let's collectively think about our decisions and the consequences that may have on others.
On Friday I rolled up to a fresh avalanche and found Utah Snowmobile Association president, Cal Taylor, investigating the slide and performing a mock rescue with his riding partner Mike Davis. In the video above, Cal has some sage advice for our riding community.
I'll update this forecast by 7:00 AM tomorrow, Wednesday December 23rd.
Your observations are import, so please let me know what you're seeing... click HERE and contribute to this amazing community based program
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]
The information in this forecast is from the US Forest Service which is solely responsible for its content.