Forecast for the Abajos Area Mountains

Eric Trenbeath
Issued by Eric Trenbeath for
Friday, December 30, 2022
Avalanche Watch
What The avalanche danger is expected to increase to HIGH this weekend.
When The Watch is in effect from 6am MST this morning to 6am MST Saturday and will most likely turn into an Avalanche Warning on Saturday.
Where For most mountains in Utah including Wasatch Range, Bear River Range, Uinta Range, Manti-Skyline, La Sal and Abajo Ranges, Fish Lake Region, Pavant Range, Tushar Range, and Cedar City area mountains.
Impacts Very dangerous avalanche conditions are expected as a series of storms will arrive this weekend with significant snowfall, substantial water amounts, and very strong winds. Both human-triggered and natural avalanches will become likely. Stay off of and out from under slopes steeper than 30 degrees.
Special Announcements
We will not be issuing daily forecasts with danger ratings this season. We simply do not have enough information for this level of detail. We will be keeping an eye on the snowpack and will post a detailed summary of conditions on Saturday mornings. Mid-week updates will be provided as weather conditions dictate.
Weather and Snow
A large storm system off the Gulf of Alaska will begin it's trek our way today. This will bring clouds, light to moderate WSW winds and a chance for snow today. The bulk of this system will be affecting points north but we could pick up a few inches of snow tonight. Saturday will remain cloudy with a chance for snow. The main event for our area kicks in Saturday night into Sunday as a low pressure system with good jet support moves in off the coast of southern California. A foot or more of new snow seems likely at this time. Stay tuned.
NWS Forecast for the Abajo Mountains
Snow totals and temps at Buckboard Flat (8924')
Snow totals and temps at Camp Jackson (8858')

Snowpack Summary and General Conditions
The mountains picked up about 6" of snow this week. Snow cover remains thin in the Abajo mountains ranging from about 20" in lower North Creek to up to 3' on sheltered, northerly aspects around Cooley Pass. Wind exposed terrain alternates between scoured and wind drifted, while most southerly aspects have less than a foot of snow.
A poor snowpack structure has developed on shady slopes where loose, weak, sugary snow has formed a persistent weak layer under a slab of stronger snow. This poor snowpack structure leads to unstable avalanche conditions. West winds will blow 15-20 mph today, strong enough to blow and drift the new snow and complicate avalanche conditions. Wind drifted snow creates unstable slabs and adds more stress to buried weak layers. In general, suspect avalanche danger steep, northerly facing slopes, especially if wind drifted. Human triggered avalanches are possible in these areas.
Photo illustrates strong snow with a slab over weak snow. Everything below the brown dust layer is weak, sugary, facted snow.
Conditons remain thin with uneven coverage. Note, however, areas with wind drifted snow on the leeward sides of ridge crests and gully walls. Wind drifts are recognizable by their smooth, rounded appearance, and cracking is a sign of instability.
Thin coverage on south and westerly facing slopes.
Additional Information
If you are getting out in the backcountry, we'd love to hear what you're seeing. Please submit observations here. For the most recent snowpack observations click here. You can also send an email to [email protected] or give me a call with anything noteworthy, especially avalanches! 801-647-8896
General Announcements
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.