Logan Avalanche Advisory

Forecaster: Toby Weed


Danger by aspect and elevation on slopes approaching 35° or steeper.
(click HERE for tomorrow's danger rating)

Danger Rose Tutorial

There is a CONSIDERABLE danger, and dangerous triggered persistent slab avalanches 2 to 3 feet deep are probable above around 8000 feet in elevation on slopes steeper than about 35 degrees, especially on those facing north through east.. You might trigger a large avalanche remotely, or worse, from below. Smaller avalanches overrunning slopes with deeply buried weak layers could produce much larger deep slab avalanches...

The danger is LOW or MODERATE at lower elevations and on sunnier slopes, most with generally very shallow snow cover for this time of year....



With a temperature of 22 degrees at 5:00 this morning, the 8400' Tony Grove Snotel reports 40 inches of total snow on the ground and with the help of a moist New Years storm, the station is now up to a dismal 49% of average water content for the date. Its also 22 degrees at the Campbell Scientific weather station on Logan Peak at 9700', and the wind sensor is recording consistent 14 mph north winds...

I found it easy to bog down in the heavy New Years snow when I rode off the beaten path on the flats in upper Steep Hollow. My track dug down into the weak December snow underneath, and I then found myself digging with a shovel a couple times to get the sled turned and unstuck....Under the stiff slab from the New Years storm, the snow was loose and granular, small-grained like white sugar. And near the ground, the loose snow was a bit larger grained like sea salt.


Last weekend was active in the Logan Area, with a number of fairly large triggered avalanches, and luckily no injuries...Here's an updated local backcountry avalanche list:

My party and I intentionally triggered a fairly large avalanche Wednesday (1-6-10) off the Crescent Lake-Steep Hollow Ridge with a very small cornice drop. The avalanche was a bit bigger and a bit more sensitive than we'd anticipated. I posted the report here


      Over the next 24 hours.

Wednesday, wind drifting and lee slope loading overloaded slopes with weak snow structure. The additional load was apparently enough on many slopes to reactivate persistent weak layers... Triggered persistent slab avalanches up to 3 feet deep are probable again today on slopes steeper than about 35 degrees, especially on those with recent deposits of heavy or wind-drifted snow..


Expect fair weather conditions in the mountains today, and it'll warm up nicely with mountain high temperatures approaching 30 degrees. A weak system makes its way into the region for the weekend, bringing clouds and a chance for a bit of light snow tomorrow. Then the high pressure will build overhead early next week....Another weak storm system may bring a chance for a little accumulation around the middle of next week......


I will be issuing morning avalanche advisories for the Logan area on Mondays, Wednesdays, Fridays and Saturdays.

Consider purchasing some Beaver Mountain lift tickets here from our good friends at Backcountry.com in partnership with Ski Utah. All proceeds benefit the Friends of the Utah Avalanche Center.

If you want to get this avalanche advisory e-mailed to you daily click HERE.

Send us your avalanche and snow observations. You can also call me at 435-757-7578 or the SLC office at 800-662-4140, or email to uac@utahavalanchecenter.org

Donate to your favorite non-profit – The Friends of the Utah Avalanche Center. The UAC depends on contributions from users like you to support our work.

The information in this advisory is from the U.S. Forest Service, which is solely responsible for its content. This advisory describes general avalanche conditions and local variations always occur.

I will update this forecast Saturday morning. Thanks for checking in....

This information does not apply to developed ski areas or highways where avalanche control is normally done.  This advisory is from the U.S.D.A. Forest Service, which is solely responsible for its content. This advisory describes general avalanche conditions and local variations always occur.

This advisory provided by the USDA Forest Service, in partnership with:

The Friends of the Utah Avalanche Center, Utah Division of State Parks and Recreation, Utah Division of Emergency Management, Salt Lake County, Salt Lake Unified Fire Authority and the friends of the La Sal Avalanche Center. See our Sponsors Page for a complete list.