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Forecast for the Logan Area Mountains

Toby Weed
Issued by Toby Weed on
Friday morning, April 11, 2025
The avalanche danger is MODERATE this morning. After an exceptionally warm night in the mountains and no overnight refreeze, today's intense April sun and unseasonable heat will elevate the threat of wet avalanches on slopes steeper than 30 degrees. Dangerous avalanche conditions may develop, and the danger will likely rise to CONSIDERABLE in sunny terrain. Natural and human-triggered cornice falls, loose wet, and wet slab avalanches are all likely in today's heat.
  • Stay off of and well away from large, overhanging cornices, as they can break back much further than expected.
  • Avoid being on steep slopes with saturated snow, especially those above trees or other terrain traps.
Low
Moderate
Considerable
High
Extreme
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Special Announcements
Our regular daily avalanche forecasts will end this Sunday, April 13. After that, we will issue updates when necessary and publish public observations until May 1.
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Weather and Snow
Mountain temperatures stayed way above freezing last night. With mostly clear skies, yesterday's moist snow surface most likely froze only superficially. Sunny skies, light winds, and temperatures a bit warmer than yesterday's are expected today. The overnight superficial surface refreeze will not last long. Dangerous wet avalanche conditions are likely to develop in steep sunny terrain during today's heat, with large cornice falls, wet slab, and glide avalanches possible, especially near rock outcroppings and on slopes capped by cornices.
You're likely to start sinking into saturated snow earlier today than yesterday, and if you do, it's time to reevaluate your plans if they include travel in steep avalanche terrain. Today is not the day for challenging mountaineering, peak bagging, extreme skiing, or gully surfing. You'll find decent riding conditions with plenty of wet snow to cool your sled in lower-angled terrain and in the high meadows, but watch for weakened snow bridges and tank traps around steams that are melting out. Today, people should avoid and stay well out from under cornices and off of steep sunny slopes.
The snow has completely melted off most low-elevation slopes in the Logan Zone (below about 7000 feet). The little that remains in north-facing terrain is very shallow and patchy.
Upper elevation snow is also quickly melting. The Tony Grove Snotel at 8400 feet reports 49° F this morning at 5:00, with 83 inches of total snow. It's already 50° F at the Card Canyon weather station at 8800 feet, with 62 inches of total snow. At 9700 feet at CSI's Logan Peak Wx station, winds are blowing from the south-southwest 22 to 31 mph, and it's 46° F. The winds on Paris Peak at 9500 feet are blowing from the south-southwest at 11 to 17 mph, and it's also 46° F.
This morning's temperatures (low temperatures) in the mountains were around 10 degrees warmer than they were yesterday, while they are similar to yesterday's in the valley. Today will be sunny, with high temperatures at 9000 feet around 60° F. Winds blowing out of the south-southwest 9 to 18 mph with gusts around 30 mph are expected. Tonight will be mostly cloudy, with a low temperature around 36° F. Winds will blow from the south-southwest 8 to 15 mph. Tomorrow will be mostly cloudy, with a slight chance of rain showers, and a high temperature near 52° F. Winds from the southwest will increase to 15 to 20 mph, with gusts around 31 mph in the afternoon. Dangerous wet avalanche conditions may develop with today's heat, but a cool-down is expected for the weekend, with temperatures dropping to around 21° F on Saturday night.
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
No avalanches were reported recently in the Logan Zone, but we could see a few new natural cornice falls and loose wet avalanches in the Wellsvilles yesterday.
Read about all avalanches and observations HERE.
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Avalanche Problem #1
Wet Snow
Type
Location
Likelihood
Size
Description
Today's warm temperatures will increase the danger of wet avalanches. After an extremely poor overnight refreeze, the snow will soften up earlier in the day today than it did yesterday and dangerous wet avalanche conditions could develop on some sunny slopes. As the snow melts and becomes waterlogged and loose, wet avalanches will become likely on steep sunny slopes facing east, southeast, south, southwest and west. Roller balls and pinwheels are sure signs of instability.
  • Pay attention to potential terrain traps below you, like trees, cliffs, or gullies, that a small avalanche might carry you into.
  • Avoid being under steep slopes with saturated snow.
  • If you are sinking in above your ankles, move to a cooler aspect, elevation, or lower-angle terrain.
Avoid being on or underneath overhanging cornices, as they can break back much further than expected and could trigger avalanches on slopes below. The warm temperatures make them more fragile.
These natural wet avalanches in Rattlesnake Canyon in the Wellsville Mt Wilderness occurred during our most recent warm spell at the end of March. After a few warm nights and mountain daytime temperatures in the 50s, cornice falls spawned by the heat, triggered wet slab avalanches.
Additional Information
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.
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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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