Bollettino valanghe

Logan

Pubblicato il Mar 3, 2026valido fino al Mar 4, 2026Utah Avalanche Center

Pericolo valanghe

Alta quota
Limite del bosco
Sotto il limite del bosco

Non aggiornato — questo bollettino è scaduto 6 months ago. Stai vedendo condizioni passate, non il bollettino in corso.

In sintesi

The avalanche danger is CONSIDERABLE in most mid and upper elevation terrain and HIGH on drifted north and east-facing slopes at upper elevations. People are likely to trigger small loose and soft slab avalanches of storm snow, as well as dangerous hard slab avalanches that propagate widely, failing on a widespread, persistent weak layer buried up to three feet deep.

Make conservative decisions and evaluate the snow and terrain carefully. Avoid and stay out from under drifted upper elevation slopes and avalanche runouts.

Problemi valanghivi

Persistent Slabs
N
NE
E
SE
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SW
W
NW
Alta quota
Limite del bosco
Sotto il limite del bosco
Probabilità
Likely
Dimensione
4
Avalanche conditions are dangerous in the backcountry. A widespread buried persistent weak layer exists on mid and upper-elevation slopes facing the northern half of the compass. Last week’s storm winds built cohesive slabs over weak, faceted snow, and yesterday's storm further overloaded suspect slopes. Any avalanche that breaks into this layer will be large, destructive, and dangerous.

Hard slab avalanches are becoming stubborn and difficult to trigger, but as we've seen this weekend, they require only hitting the right trigger point. A rider or a snowmobile traveling uphill, across the slope, or downhill—especially across a thin or shallow spot in the slab—could cause it to fail. These types of avalanches can propagate widely and may be triggered remotely, or worse, from below. Hard wind slabs can be tricky; sometimes, allowing a person to get well out on them before suddenly releasing.

Watch for and avoid smooth, rounded, drum-like drifts near ridgelines, sub-ridges, rock outcrops, gully walls, and rollovers. Collapsing and shooting cracks indicate instability—but may not always be present.
Wind Slabs
N
NE
E
SE
S
SW
W
NW
Alta quota
Limite del bosco
Sotto il limite del bosco
Probabilità
Likely
Dimensione
2
Small, loose, and soft slab avalanches of wind-drifted storm snow are likely today, as heavy new snow accumulated at upper elevations yesterday and was drifted onto steep slopes overnight. A small avalanche running over a slope with poor snow structure could cause a larger, more dangerous hard slab avalanche to fail on a persistent weak layer buried up to three feet deep.

Recent Activity

In the Wasatch Mountains, avalanches have killed four people recently in separate accidents. We've released our final report on last Sunday's tragic Caribou Basin Accident (2-22-26). Our heartfelt condolences go out to the affected family, friends, rescuers, and community members. Thank you to everyone involved for sharing information.

*Over the weekend in the Logan Zone, riders triggered large and dangerous hard slab avalanches. These hard slab avalanches of previously wind-drifted snow are exactly the type of avalanche you could trigger today:

An observer's crew came across and searched a freshly triggered avalanche on Friday, February 27, near the Naomi Trail on an east-facing slope around 8900'. video below
On Saturday, February 28, riders triggered a large slide, reported to be about 2 feet deep and 500 feet wide, at about 9500 feet in elevation on the eastern side of Naomi Peak.
On Sunday, March 1, a rider was caught and carried, and their sled rolled by a 3-foot deep and 50-foot wide hard slab avalanche under a cliff band on a north-facing slope at around 8700 feet in elevation. report here

Huge thanks to the riders that shared information, photos, and videos. This information may well save lives.... For all observations and avalanche activity in the Logan Zone, go HERE.

Snow and Weather

Human-triggered and natural avalanches are likely on slopes steeper than 30 degrees in the backcountry today. Yesterday's storm overproduced, and about a foot of heavy new snow accumulated on upper-elevation slopes. Last night's moderate winds out of the northwest drifted snow directly into upper-elevation avalanche starting zones. The storm continued to build a slab layer overloading slopes with poor snow structure and fragile, buried persistent weak layers. The good news is that temperatures dropped as the new snow accumulated, so the new snow should be heavier at the bottom and lighter on top, or "right-side-up." We will find good powder riding conditions today, but we plan to ride in the meadows and off of and well out from under the steep hills (slopes steeper than 30 degrees). There is very little snow left below about 7000 feet in elevation.

The UAC Card Canyon weather station at 8700 feet reports 11 inches of new snow. It's 26°F with 65 inches of total snow. The Tony Grove Snotel, located at 8400 feet, reports 10 inches of heavy new snow, containing 1.5 inches of SWE (snow water equivalent). It's 28°F, and there's 79 inches of total snow. At 9700 feet on Logan Peak, winds are blowing from the northwest at 20 to 30 mph. It's 21°F on Paris Peak at 9500 feet, and the wind, from the north, is blowing 15 to 20 mph.

Clouds will gradually clear out today, and it will become partly sunny in the mountains, with a high temperature near 36°F at 8500'. Winds out of the north west will be fairly light. Tomorrow will be mostly sunny, with high temperatures around 40°F and moderate winds from the southwest. Snow is likely beginning tomorrow night through Thursday night, with 3 to 7 inches of accumulation...Snow is also likely on Friday.

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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With complex and dangerous avalanche conditions across the Bear River Mountains, your safest choice is still to stay off and away from steep hills. If you choose to travel in avalanche terrain, follow safe travel protocols by exposing only one person at a time. video below

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.

Observations and Avalanches

Backcountry Emergency Procedures