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 05, 2003
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Good Morning. This is Evelyn Lees with the
Skies are mostly clear this morning, and the toe numbing temperatures are near zero. Winds continue to be very light at all elevations, less than 10 mph from the north. Yesterday, snow showers added an additional 3 to 6 of very light powder, and the settled new snow depths are 1 to 2 ½ feet deep. Most slopes are blanketed in deep, intoxicating powder providing some of the best turning and riding conditions this winter.
The snow pack is on edge, and
there were two very close calls yesterday.
A party on the north side of
The second slide was just above Twin Lakes pass on a northeast facing slope at 10,000. It broke a couple turns above the skier, and carried him 200. He was buried with only his hand above the surface. His partners rapidly dug him out uninjured. This slide was roughly 60 wide and 3 deep. Both these slides occurred after the parties had made 1 or more runs with no signs of instability.
You need a suspicious attitude if you are traveling on slopes of about 35 degrees or steeper today, because if you do trigger a slide, it will be deep and dangerous. Most of the recent slides have occurred on slopes that slid during the past month and have a shallow snowpack, or in shallow, rocky areas near ridges. Our snow pack is still quite variable, and determining the shallow snow pack areas is difficult. In a few steep areas, sluffs in the new snow getting big enough to wash you off a cliff or into trees. Cornices are sensitive, and can break back further back than expected, and then trigger a slab on the slope below.
Bottom Line (SLC,
There is a MODERATE danger of triggering an avalanche into deeper weak layers on northwest, north, northeast and east facing slopes steeper than 35 degrees that are above 9,000 or on any steep slope with recent wind drifts. In shallow snowpack areas, the danger is closer to CONSIDERABLE. There will also be some loose sluffs within the new snow on steep slopes. If the wind does increase, the danger will rise rapidly rise on steep wind drifted slopes. On slopes less steep the 35 degrees, any slope below about 9,000 and on non-wind drifted southerly facing slopes the avalanche danger is generally LOW.
Cold and unsettled weather
will remain over the area for another 24 hours.
Increasing clouds this morning, with another few inches of light density
snow possible late this afternoon into this evening as a pocket of colder air invades
We will be giving a free avalanche awareness talk at Milo Sport on Wednesday, February 12th at . They are on 3300 South and 3119 East.
The Banff Film Festival is
coming to Kingsbury Hall February 12th and 13th, with
proceeds donated to the Friends of the
The Friends of the
To report backcountry snow and avalanche conditions, especially if you observe or trigger an avalanche, call (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.
Bruce Tremper will update this advisory by on Thursday morning.
Thanks for calling!
For an explanation of avalanche danger ratings: