In partnership with: The Friends of the Utah Avalanche Forecast Center, Utah Department of Public Safety Division of Comprehensive Emergency Management, Salt Lake County, and Utah State Parks
Friday, February 28, 2003
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Good Morning. This is Bruce Tremper with the
A little bit of sun yesterday put a sun crust on all slopes except the straight north facing ones, where you can still find about 8 inches of very nice powder snow. Winds are calm this morning with ridge top temperatures in the single digits.
explosive testing produced three large avalanches in the
If nothing else, Utahn’s are
getting a good education this season.
Another less dangerous problem is that the new snow is not bonding very well to the old ice crust. Yesterday, the new snow was sluffing easily in loose snow avalanches, which usually are not much of a problem unless one takes you over a cliff or into a terrain trap such as a gully. Finally, one thing to keep in the back of your mind, these clear, calm, humid conditions has formed widespread areas of frost on the surface of the snow, which we call “surface hoar”. Once buried, it becomes a very thin and very weak layer that could produce avalanches in the future. Keep this in mind for our next storm.
Bottom Line (SLC,
The avalanche danger is MODERATE on all slopes steeper than about 35 degrees, and above about 9,000 feet. Moderate means human triggered avalanches possible. Sluffs and soft slabs triggered within the new snow have the potential to pull out layers of old snow, creating larger more dangerous avalanches. Slopes less steep than about 35 degrees have a generally LOW danger. 35 degrees is about the steepness of a black diamond slope at a ski resort.
Note: the western
For a change, we have a broad
trough stuck over the western
Weather permitting, and
depending on visibility, Wasatch Powderbird Guides will be flying in one or all
of the following areas: Silver, Days,
To report backcountry snow and avalanche conditions, especially if you observe or trigger an avalanche, please leave a message on our answer machine at (801) 524-5304 or 1-800-662-4140, or email to [email protected] or fax to 801-524-6301. 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 advisory by on Saturday morning.
Thanks for calling!
For an explanation of avalanche danger ratings: