Forecast - Utah Avalanche Center

Forecast for the Logan Area Mountains

Issued by Toby Weed on
Friday morning, December 5, 2025

A SIGNIFICANT WINTER STORM WILL ELEVATE AVALANCHE DANGER IN THE BACKCOUNTRY. Heavy snowfall and drifting by winds from the west will cause rising danger throughout the day, and dangerous conditions will likely develop overnight. There is MODERATE danger today in drifted upper elevation terrain. People could trigger avalanches of new snow and/or wind-drifted snow on slopes steeper than about 30 degrees.

Evaluate snow and terrain carefully.
Avoid travel on drifted slopes at upper elevations.

Low

Moderate

Considerable

High

Extreme

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Weather and Snow

The Tony Grove Snotel at 8400' reports 3 inches of new snow this morning and 18 inches of total snow, and it's 23° F. A wind from the west picked up again overnight, and this morning, it's blowing 25 to 45 mph on Logan Peak and 25 to 40 mph from the southwest on Paris Peak. Temperatures range from 15° F on Paris Peak to 33° F down here in West Logan.

The National Weather Service has issued a Winter Storm Warning for the northern mountains, including the Logan Zone, through early Sunday morning. *This from this morning's NWS forecast discussion: "A significant winter storm will impact northern and central Utah through Sunday morning. The potential for unsettled weather continues through the middle of the upcoming week."

In the Logan Zone: Expect snow in the mountains today, heavy at times, with 5 to 9 inches of accumulation possible on upper elevation slopes. High temperatures at 9000' will be near 28° F. Winds out of the west will blow 10 to 14 mph. Tonight, the snow could be heavy at times, and we can expect widespread blowing snow, with 9 to 13 inches of accumulation possible. The temperature will rise to around 29° F by 5 am. It will be quite breezy, with winds from the west-southwest 20 to 24 mph, and gusts as high as 46 mph.

This storm will significantly elevate avalanche danger in the backcountry, and dangerous conditions are likely to develop this weekend.

Recent Avalanches

No avalanches have been reported recently in the Logan Zone. For observations and avalanche activity, go HERE

Type

Location

Likelihood

Size

Description

The danger of loose and storm slab avalanches will increase as heavy new snow rapidly accumulates on preexisting weak sugary snow. The likelihood of human-triggered and natural soft slab avalanches of storm snow will increase significantly this evening and overnight.

Even a small avalanche could be quite dangerous in these shallow snow conditions, because you might be dragged through the rocks or down trees below.
Follow safe travel protocols; travel in the backcountry with companions, but cross (or ride) steep slopes one person at a time while the rest of your party watches from a safer place.
See video of early-season snow conditions.

Type

Location

Likelihood

Size

Description

There are areas where people could trigger small wind slab avalanches (around a foot deep) on drifted upper-elevation slopes steeper than about 30 degrees. The danger of wind slab avalanches will become more widespread, and potential avalanches will be larger as the snow is drifted into avalanche starting zones this evening and tonight

Additional Information

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

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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.

General Announcements

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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