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Avalanche advisory
Thursday, February 24,
2005
Good morning, this is Evelyn Lees with the
Current Conditions:
Under clear skies, temperatures are in the upper teens to low twenties this
morning, with the colder air pooled in the valley bottoms. Winds continue to be from the southeast, in
the 10 to 20 mph range across the higher peaks, with gusts to near 30. In the battle of wind and sun versus powder,
the powder is losing. However, all is
not lost - on wind sheltered, shady mid and upper elevation slopes there are
some strong holdouts of good, recrystalized powder.
Avalanche Conditions:
Two human triggered slides were reported yesterday. On the Little Cottonwood Canyon side of
The unrelenting, almost daily
avalanche activity indicates the variety of weak layers in the snowpack. If you are traveling on steep slopes, you need
to be thinking about these different snowpack problems. It is possible to trigger the old or new wind
drifts, shallow soft slabs or sluffs. As
the sun heats the snow, damp sluffs and “push-a-lanches” could occur on steep
sunny slopes and also on the steep, shady low and mid elevation slopes. And finally, there are still isolated spots
where a person or smaller slide could trigger a deeper slab avalanche.
Bottom Line (
The avalanche danger is MODERATE on slopes
steeper than about 35 degrees, especially any slope with recent or old deposits
of wind drifted snow. On slopes less steep than about 35 degrees, the avalanche
danger is LOW.
(http://www.avalanche.org/~uac/ed-scale.htm
for an explanation of avalanche danger ratings.)
Mountain Weather: (You can find the afternoon
Weather Update here.)
With a high pressure ridge over northern Utah, skies will remain clear and
sunny today, with temperatures in the mid 20’s at 10,000’ and the upper 30’s at
8,000’. The easterly winds will be in
the 10 to 15 mph range, with gusts to near 30. The best chance for light snow will be on
Saturday, before another ridge builds in for Sunday through Tuesday.
Wasatch
Powderbird Guides did not fly yesterday, and if they can fly today, they will
have one ship in American Fork, Mill Creek or the Sessions, and the other will
be in Mineral, Cardiff, Days, Silver, Grizzly and White Pine.
If you have any snow or
avalanche observations, call and leave a message at 524-5304 or 1-800-662-4140,
or e-mailing us at [email protected]. Fax is 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.
Brett Kobernik will update
this advisory by 7:30 on Friday morning.
Thanks for calling.
For an explanation of avalanche danger ratings:
http://www.avalanche.org/~uac/ed-scale.htm