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Forecast for the Logan Area Mountains

Toby Weed
Issued by Toby Weed on
Wednesday morning, March 19, 2025
There is CONSIDERABLE avalanche danger, and people are likely to trigger avalanches on drifted upper and mid-elevation slopes steeper than 30 degrees. Large cornice falls, avalanches of wind-drifted snow up to 3 feet deep, soft slab avalanches of new snow, and loose wet avalanches are possible.
  • Avoid steep, drifted slopes and stay well away from and out from under overhanging cornices.
  • Make conservative choices and evaluate the snow and terrain carefully.
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Weather and Snow
Powder riding conditions are all-time EXCELLENT! One seasoned local observer claims, "Absolute blower pow. Five stars. Deepest day of the season by far. Chest deep to waist deep. Unreal sledding"
"he best ever. However, we need to make conservative terrain choices, and travel with a higher degree of situational awareness because yesterday's heavy snowfall and drifting by winds from the northwest created dangerous avalanche conditions in drifted upper and primarily easterly facing mid-elevation terrain. In some areas, natural avalanches are possible and people are likely to trigger dangerous cornice falls and/or wind slab avalanches up to 3 feet deep.
This is accident weather! Deep powder and a sunny day with good visibility after a storm can lure us into steeper terrain, and we all need to remember that there is CONSIDERABLE danger today on steep drifted slopes.
The Tony Grove Snotel at 8400 feet reports 5 inches more of light new snow overnight, bringing the storm total up to 14" with 1.2" SWE. It's 15° F, with 112 inches of total snow. It's 10° F at the Card Canyon weather station at 8800 feet, with 13 inches of new snow from the storm and 88 inches of total snow. At 9700 feet at CSI's Logan Peak Wx station, winds are blowing 13 to 25 mph from the northwest, and it's 8° F. The winds on Paris Peak at 9500 feet are blowing 5 to 12 mph from the west-northwest, and it's also 8° F.
It will be sunny today, with a high ay 8500 feet near 26° F. Wind from the northwest 6 to 11 mph becoming west-southwest. Tonight: Increasing clouds, with a low around 16° F. Southwest wind 9 to 11 mph.
Thursday: Snow showers, mainly after 9am. High near 28° F. Breezy, with a southwest wind 14 to 23 mph, with gusts as high as 40 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible. The weather will remain unsettled through the weekend, with a few inches of accumulation likely, and heavier snow possible again on Saturday.
For more information, visit the UAC weather page here: Weather - Utah Avalanche Center
For Logan-specific weather, go here: Logan Mountain Weather - Utah Avalanche Center
Recent Avalanches
Observers yesterday reported triggering small soft slab avalanches of storm snow in steep terrain. One party in the Central Bear River Range remotely triggered a wind slab that was 18 inches deep and about 20 feet wide from 40 feet away. (see photo below):
There were some good-sized natural avalanches during Sunday's wind storm, with a couple of large cornice fall and/or wind slab avalanches observed in the Mt Naomi Wilderness. Monday, we could see that two large cornice fall avalanches occurred on Cornice Ridge. One of these was over 300' wide and ran at least 500 vrt' with very large debris chunks spread across the bowl.
Read about all avalanches and observations HERE.
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Avalanche Problem #1
Wind Drifted Snow
Type
Location
Likelihood
Size
Description
  • Watch for and avoid stiffer wind-drifted snow on the lee side of major ridges, below cornices, and in and around terrain features like cliff bands, sub-ridges, and gully walls.
  • Wind slabs appear smooth, chalky, and rounded, and they can sound hollow, like a drum, when you move around on them.
  • Cracking is a red flag indicating unstable snow.
  • Hard wind slabs sometimes let you get out on them before releasing suddenly. (Hard wind slabs formed over the weekend may be hidden by light new snow today.)
  • Freshly formed, softer wind slabs are often very easily triggered, sometimes remotely (or from a distance).
Avalanche Problem #2
New Snow
Type
Location
Likelihood
Size
Description
  • Human-triggered loose and soft slab avalanches of storm snow are likely on slopes with significant accumulations of new snow, especially where the new snow was drifted onto steep slopes.
  • On sunny slopes and at lower elevations, solar warming will moisten the snow surface and elevate the potential of loose wet (or moist) avalanches entraining storm snow.
Avalanche Problem #3
Cornice
Type
Location
Likelihood
Size
Description
  • People should stay off of, out from under, and well away from large overhanging cornices, which are deceptive and often break much further back than expected.
  • Natural cornice falls are possible, and these could trigger avalanches on slopes beneath.
Additional Information
Yesterday, a party in Bunchgrass remotely triggered a 18" x 20' wind slab from 40 feet below that cracked out but did not run more than a few inches because the slope was not steep enough to slide.
Some riders found excellent deep powder riding conditions in the meadows and on lower-angled slopes yesterday.
Deep powder and a sunny day after a storm can lure us into steeper terrain and we all need to remember that there is CONSIDERABLE danger today on steep drifted slopes.
General Announcements
-National Forest Winter Recreation Travel Maps show where it's open to ride: UWCNF Logan, Ogden LRD Tony Grove, Franklin Basin CTNF Montpelier
-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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