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Forecast for the Uintas Area Mountains

Craig Gordon
Issued by Craig Gordon on
Thursday morning, December 5, 2019
We've got two distinct avalanche problems with two distinct outcomes.
While not widespread, in the wind zone at upper elevations, you'll find CONSIDERABLE avalanche danger. Human triggered avalanches are likely on steep slopes facing the north half of the compass, particularly those that harbor weak, pre-existing snow. More the exception than the rule, any avalanche that breaks to old snow near the ground will result in a deep and dangerous slide.
In addition, though winds aren't exactly cranking, the Uinta's are a big place, and I bet there's a fresh wind slab or two that'll react to our additional weight. Along the leeward side of ridges and on steep, wind drifted, mid and upper elevation slopes you'll find a MODERATE avalanche danger. Human triggered avalanches breaking within the newly formed wind drifts are possible.
Here's your exit strategy-
Wind sheltered low elevation terrain that held no old snow prior to the Thanksgiving storm generally offers LOW avalanche danger and human triggered avalanches are unlikely. South facing terrain with no old snow and big open meadows with no steep terrain above or adjacent to where you're riding is the ticket.
Low
Moderate
Considerable
High
Extreme
Learn how to read the forecast here
Weather and Snow
Above the valley funk, junk, and gunk, it looks like the mountains have a new coat of white paint. Snow showers developed overnight and 3" of dense snow stacked up. It's mild, with most remote weather stations reporting temperatures near freezing. Southerly winds ramped into the 20's and 30's last night, blowing steadily along the high ridges this morning.
The big Thanksgiving storm gave us a great start to the winter season and we now have a respectable snowpack with total snow depths averaging just under three feet. Travel is a bit more reasonable, but remember.... the Uinta's are made of huge boulders, so rock free roads and meadows are your safest bet.
For today-
Scattered snow showers continue through early afternoon with a couple more inches possible. It'll be mild with high temperatures rising into the mid 30's. Southerly winds blow in the 20's and 30's along the high ridges. Brief high pressure builds for Friday, with a better shot of snow developing for late Saturday.
Above is 24 hour weather data from Windy Peak (10,662') and Chalk Creek (9,169')
Click here for more real time Uinta winds, temperatures, and snow depth.
Recent Avalanches
Our main man Ted Scroggin was in the Whitney zone yesterday cataloging recent avalanche activity from the big Thanksgiving storm. The images above clearly illustrate the scope of the avalanche problem we're dealing with. While the snowpack slowly gains strength and avalanche activity has tempered somewhat, the scary fact is... the snowpack still needs a bit of time to adjust and we need to have some patience. Remember- any slide you trigger may break to weak snow near the ground, producing a deep, dangerous avalanche. More on Ted's travel and insights are found here.
Ad
Avalanche Problem #1
Persistent Weak Layer
Type
Location
Likelihood
Size
Description
Here's the deal-
Mark's great video from Sunday's outing clearly shows the problem that isn't going away anytime soon. Dense, heavy, Thanksgiving storm snow coupled with several days of raging winds conspired against the strength of our weak, suspect, and structurally challenged early season snowpack. Mark posted an outstanding observation.... more on his travels and insight is found here.
Ted's snow profile from the North Slope reveals the big Thanksgiving storm resting on weak snow near the ground.
Now here's the problem-
As the snowpack settles it's gaining strength... and that's good news. The bad, not so in your face, you need to do a little homework news is... upper elevation slopes facing the north half of the compass harbor old October snow (weak layers) and they continue producing big, booming collapses (whoomphing sounds) and cracks shooting for hundreds of feet. This is a huge red flag indicative of dangerous avalanche conditions. As a matter of fact, all you need to do is a little investigating. Take your shovel out, dig down a few feet and you'll clearly see the overall snow structure suggests we've got a sketchy snowpack. This is the type of setup where we don't even have to be on the slope in order to trigger a slide, we just need to be connected to it. What this means is... we can initiate avalanches from a distance. Once triggered, even a small avalanche may break a bit deeper and wider than you might expect, failing near the ground, revealing obstacles hidden under the thin facade of our early season snowpack. Remember- any slide could easily result in a season ending injury if you get raked over stumps, rocks, or deadfall.
It doesn't mean we can't ride, but what I do know is the best way to avoid unpredictable avalanche conditions is to avoid where it exists. We can still have a great day by playing in big open meadows and simply staying off of and out from under steep, upper elevation terrain facing the north half of the compass.
Avalanche Problem #2
Wind Drifted Snow
Type
Location
Likelihood
Size
Description
While there's not an abundance of loose snow available to blow around, the Uinta's are a huge range and I bet, shallow, fresh wind drifts will react to our additional weight. Found mostly on upper elevation leeward slopes, there might also be a pocket or two of wind drifted snow cross loaded in a mid elevation gully or chute. Your best bet for avoidance is to simply steer clear of any fat, rounded piece of snow, especially if it looks chalky or sounds hollow like a drum. In addition, look for and listen to clues like whoomphing sounds or shooting cracks in the snow which are sure signs of unstable conditions.
Additional Information
The First Annual Avalanche Awareness Week is this week, running from December 2-7
We have a week full of fun and educational events planned. Check out the schedule here.
As part of your early season tune-up, consider taking an avalanche class. We have lots of avalanche education classes listed already, from Know Before You Go to Companion Rescue to our Backcountry 101. Click on the Education menu on our webpage for a full list of classes from the UAC and other providers. Check out the Know Before You Go eLearning program for free, online, avalanche classes.
Please join me on Friday Dec. 13th at 6:30 for a free avalanche awareness presentation in partnership with Wasatch County SAR. It's guaranteed to be entertaining, informative, and I'll share safety tips that allow you to rip powder safely and come home to your families at the end of the day.... pretty good deal... huh?
General Announcements
The information in this forecast expires in 24 hours, but will be updated by 7:30 AM Friday Dec. 6th.
Once the snow begins to fly in earnest, this forecast will be updated each day by 7:30 AM.
In the mean-time, 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
It'll be a minute or two before we're riding, but while you're waiting....
This is a great time of year to schedule one of our free avy awareness presentations.
You can email me directly [email protected]
The information in this forecast is from the US Forest Service which is solely responsible for its content.