Avalanche forecast

Logan

Issued Dec 21, 2025valid to Dec 22, 2025Utah Avalanche Center

Avalanche danger

Alpine
Treeline
Below treeline

Out of date — this forecast expired 8 months ago. You’re viewing past conditions, not the current bulletin.

Highlights

Avalanche danger is MODERATE at upper elevations on northwest through southeast-facing slopes. Winds blowing from the southwest may create dense wind slabs near ridges, sub-ridges, and gullies. While crusts cap early-season facets on many slopes, triggering 1–2 foot-deep avalanches remains possible—especially where the slab is thinner, crusts are weak, or wind-drifted snow could step down.

***Rain may reach up to 9,500 feet today. Rollerballs or sinking past your ankles are signs to move onto lower-angle terrain.

Evaluate snow and terrain carefully.

Below 7,000 feet, snow cover is minimal.

Avalanche problems

Wind Slabs
N
NE
E
SE
S
SW
W
NW
Alpine
Treeline
Below treeline
Likelihood
Possible
Size
1
The winds have caused some damage over the past week, scouring some slopes and loading others. Wind slabs are likely to be stiff and stubborn, given the high snow density. Today, moderate to strong winds blowing from the southwest will transport any available snow and load ridgelines, subridges, and gullies with fresh wind drifts. Avoid steep slopes that are actively loading or have a rounded, pillow-like appearance. Cracking under your feet, a hollow feel, or stiff, chalky snow are all signs of areas to avoid.

Even small avalanches can have serious consequences in shallow snow conditions, where a slide could drag you through rocks or downed trees below.

Stick to safe travel practices: travel with a partner, and cross or ride steep slopes one at a time while the rest of your group watches from a safe spot.
Persistent Slabs
N
NE
E
SE
S
SW
W
NW
Alpine
Treeline
Below treeline
Likelihood
Unlikely
Size
2
In the Central and Northern Bear River Range, weak, faceted snow from November is buried beneath a thick crust or multiple crusts and dense snow. On steep, wind-drifted slopes—especially where the crust is thin or missing—people can still trigger avalanches that may propagate widely. Collapsing, shooting cracks, and whumpfs, are clear warning signs of unstable snow. Remotely triggered avalanches are also possible where the overlying slab is thinner.

Snowpit profile from the Emigration Summit Area - North Aspect - 8300'. You can see the stout crust near the surface, capping the weaker snow near the ground.

Recent Activity

No new avalanches have been reported locally since early December. For all observations and avalanche activity in the Logan Zone, go HERE

Snow and Weather

Current conditions: It is 33 °F at the 8400' Tony Grove Snotel this morning with 32" of total snow. Our Card Canyon site is showing 30 °F with 18" of total snow. On Logan Peak, winds are blowing from the southwest in the 30s mph and gusting into the 40s mph. Since Friday afternoon, Tony Grove has picked up 1" of snow water equivalent, but only a few inches of snow. Backcountry riding conditions have improved with this past week's snowfall, and coverage is also improving. UAC Observer Ken Thompson found supportable snow above 8500' yesterday, but noted a breakable melt-freeze crust below that. (see his pit below). You can certainly get around in the backcountry, but be mindful of "just buried" hazards like stumps, rocks, and downed trees.

Mountain weather: Expect a soggy day in the backcountry today with an 8500' high of 38 °F and winds blowing from the southwest in the 20s mph, gusting into the 40s mph. The rain/snow line is expected to rise to 9500' by the afternoon, and if we are lucky, we may see a few inches of moist snow. The storm continues through Monday, with a chance of a few more inches of snow and warm, windy conditions. The next storm is expected to move in on Christmas Eve, bringing the possibility of snow and thunder to usher in the holiday.

Additional Info

Are you interested in learning more about avalanches? Visit our education page for details on all our classes.

For more information, visit the UAC weather page here: UAC Weather Page For Logan-specific weather, go here: Logan Mountain Weather

-For all questions on forecasts, education, Know Before You Go, events, online purchases, or fundraising, call 801-365-5522.

-Remember, the information you provide could save lives, especially if you see or trigger an avalanche. To report an avalanche or submit an observation from the backcountry, go HERE

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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.

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This information does not apply to developed ski areas or highways where avalanche control is normally done. 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.

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