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 LOW avalanche danger in the Logan area backcountry, and you'll find generally safe avalanche conditions.  Watch for freshly deposited, shallow wind slabs on isolated and exposed upper elevation terrain features.


You know things are bad when you get excited about an angry inch.  And that's all we got last night, but it should freshen and soften things up a bit.  Thanks to the dense snow and the rain-crust from the 12th and 13th and more recent cold nighttime temperatures, there’s still some decent snow coverage above around 8000’.  In the past two weeks, sublimation of water vapor, driven by a temperature gradient in the shallow snowpack caused the development of faceted snow under the crust.  In more and more places, the crust has weakened and you break through it more frequently.


      Over the next 24 hours.

Watch for small, developing wind slabs as north winds pick up today.  I don't think enough snow fell overnight for slabs to build more then a couple inches deep, but strong winds could create problems in isolated upper elevation pockets.  Watch for wind deposited or drifted snow in exposed terrain, mainly along the highest ridges. 


Snow showers in the mountains should wind down this morning as a high pressure system moves into the region.  A developing inversion will trap northwesterly winds at ridge top and lower elevations and NWS forecasters predict Venturi Effect enhanced, strong ridge top winds.  The high pressure system will bring fair weather for the weekend and the first part of next week.  Models hint at a potential storm for around midweek.


We plan to run the Basic Avalanche Clinic on December 12-13 with the USU Outdoor Recreation Center.  Please register in advance....call (435) 797 - 3264 or go to  USU ORC  

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.