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
Wednesday, February 12, 2003
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Good Morning.† This is Evelyn Lees with the
We will be giving a free avalanche awareness talk at Milo Sport in SL tonight, at .† They are located at 3119 East, 3300 South.
Warm air is moving in from
the south, and itís time di
The temperature line on our weather chart has been steadily marching upward over the past few days, signaling a change in weather and snowpack conditions.† Today, the combination of warming temperatures, sun, occasional thin clouds and light winds will heat the snow surface on a variety of aspects.† On sunny slopes, both wet sluffs and wet slabs will be possible, often initiating around rocks bands which heat up first.† There could also be localized damp sluffs on the shady slopes as the cold, dry snow warms up for the first time, especially below about 9,000í.† So if the snow surface becomes damp and sloppy where you are, itís time to get off of and out from under steep slopes.
Pockety, shallow wind slabs
exist along the higher ridges.† Most are
rather stubborn, but it is possible to crack them out on steep slopes.† Once you get a wind slab or cornice moving,
it has the potential to step down into the weaker faceted layers.† Resort control work in the
And finally, you can never totally relax when there are buried layers of facets in the snow pack.† While there are only isolated places where you can trigger a deeper avalanche, if you do it will be large and very scary.† The most likely place would be a steep, rocky slope with a shallow snow pack, especially on a slope that slid earlier this year.
Bottom Line (SLC, Park City, Ogden, and Provo Area Mountains):
With day time heating, the danger of damp sluffs and slabs will increase to MODERATE on and below steep sunny slopes, and on the low and mid elevation shady slopes.† There is also MODERATE danger of human triggered avalanches on any steep slope with recent deposits of wind drifted snow and a MODERATE danger of triggering an avalanche into deeper weak layers on northwest, north, northeast and easterly facing slopes, steeper than about 35 degrees and above about 9,000 feet.† With a warm, wet storm in the forecast, there will be a rising avalanche danger tonight into the weekend.
The closed low spinning off
The Friends of the
To report backcountry snow and avalanche conditions, especially if you observe or trigger an avalanche, remember that the information you have could save someoneís life.† 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.
Ethan will update this advisory by on Thursday morning.
Thanks for calling!
For an explanation of avalanche danger ratings: