Bollettino valanghe

Logan

Utah Avalanche Center
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Pericolo valanghe

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  • Limite del bosco
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In sintesi

The avalanche danger is HIGH in the backcountry today, with both natural and human-triggered avalanches likely.

People should avoid travel in avalanche terrain and stay clear of avalanche runouts. Stay off and out from under slopes steeper than 30 degrees.

Problemi valanghivi

  • Persistent Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Very Likely
    Dimensione
    4

    Avalanche conditions are dangerous in the backcountry, as preexisting layers of very weak snow are overloaded by very heavy snowfall and drifting. The heavy new snow is overloading a poor snowpack structure, with asugary weak layer now buried 2 to 3 feet deep, and the avalanches it can produce are large, destructive, and deadly.

    • Natural avalanches failing on the widespread PWL are fairly likely today, and they could be large and destructive and run far.
    • Large, dangerous, and deadly avalanches can be triggered remotely (from a distance or below).
    • Audible collapsing or whumpfs and shooting cracks indicate unstable snow, but may not always be present.

    This video shows an extended column test from yesterday in the Northern Bear River Range

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Very Likely
    Dimensione
    3

    Fresh drifts and soft slabs of wind-drifted storm snow will continue forming in lee terrain and in and around exposed terrain features at upper elevations. Fresh drifts will further overload previously formed wind slabs, increasing potential for dangerous hard slab avalanches failing on the persistent weak layer formed in January.

    • Slabs of wind-drifted snow will form in and around terrain features like starting zones, sub-ridges, rock outcroppings, gullies, and mid-slope rollovers.
    • Wind slabs of stiffer, drifted snow are rounded and smooth-looking, and they often sound hollow, like a drum.
    • Beware if you cause cracking in stiffer drifted snow. Collapsing or whumpfing is a major indicator of instability.
    • Small wind slab avalanches overrunning a slope with poor snow structure could cause a larger avalanche to occur.
    • Even small avalanches can be quite dangerous if you are carried into trees or other terrain traps below.

  • Loose Wet

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Very Likely
    Dimensione
    3

    Loose wet and wet slab avalanches are likely on steep slopes with rain-saturated snow. Avalanches failing on the PWL could entrain saturated snow in descent and become large and dangerous.

Avalanche Warning

What; The avalanche danger is HIGH in the backcountry today; very dangerous avalanche conditions exist, with both natural and human-triggered avalanches likely.

When: In effect from 6am MST this morning, (February 25) to 6am MST Thursday (February 26)

Where: For the mountains of Northern Utah and Southeast Idaho, including the Wasatch and Bear River mountain ranges.

Impacts: Recent heavy snow combined with wind has overloaded slopes with poor snow structure and created widespread areas of unstable snow. Both human-triggered and natural avalanches are likely. People should avoid travel in avalanche terrain and stay clear of avalanche runouts. Stay off and out from under slopes steeper than 30 degrees.

Recent Activity

In the Wasatch Mountains, avalanches in the last week killed 3 people, and one is still in critical condition. Reports of numerous other accidents and close calls have come in from across the state. A snowmobiler (on a snowbike) was caught, carried, and fully buried in a very large avalanche Sunday (February 22nd, 2026) afternoon in the upper reaches of Caribou Basin of Snake Creek well above the town of Midway, Utah. Initial rescue efforts were hampered as there was no signal from an avalanche transceiver...and the victim's body was recovered Monday morning by Wasatch County SAR teams. Initial accident report. Sadly, two other fatal avalanche accidents occurred last week nearby in the Wasatch Range: Ant Knolls and Rock Garden.

It's been active locally as well, and for all observations and avalanche activity in the Logan Zone, go HERE. On Saturday, riders triggered a couple of large hard slab avalanches in the Three Terraces area in upper Providence Canyon. The video account is below:

Snow and Weather

Large natural avalanches are likely in the mountains around Cache Valley, Bear Lake, and the Bear River Valley, and people should avoid being in avalanche terrain today. Currently, at 8700 feet, the UAC Card Canyon station reports 31°F, 58 inches of total snow, and about 5 inches of very heavy new snow. The Tony Grove Snotel, located at 8400 feet, reports 34°F, and there's 64 inches of total snow. There is 9 inches of new snow with 1.9" of SWE (snow water equivalent). Winds on Logan Peak are blowing from the west around 30 mph with a gust of 55 mph earlier this morning. It's 23°F on Paris Peak at 9500 feet, and the wind is blowing 19 to 34 mph from the southwest.

The National Weather Service has continued a Winter Weather Advisory for the Logan Zone through Wednesday. Snow is expected to continue up high today, and it could be heavy at times, with 3 to 7 inches of heavy snow accumulation possible at upper elevations in the Bear River Range. Rain is likely at lower elevations, below about 7500 feet in elevation. Fairly strong winds from the west will drift the storm snow onto slopes with poor snow structure. The storm will move out of the area tonight, and it will be partly cloudy, with high temperatures at 8500' around 34°F, and continuing, gradually diminishing west winds

Additional Info

  • Travel with a partner, and cross or ride slopes steeper than 30 degrees one at a time while the rest of your group watches from a safe spot.
  • Ensure that everyone in the group has avalanche rescue equipment (a transceiver, probe, and shovel) and knows how to use it.

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Join the UAC for the first "Stay and Play Avalanche Course" at Bear River Lodge in the Uintas, March 19th-22nd. This course is designed for snowmobilers by snowmobilers, where you will learn avalanche rescue, riding skills, and how to survive in the backcountry. Come enjoy all the luxury offerings at Bear River Lodge and improve your skills along the way.

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

Did you know the UAC hosts a podcast? Episode 2 of Season IX is just out - AI, Machine Learning, and the Value of Expert Intuition at the Utah Avalanche Center.

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

-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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