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
Saturday,
February 15, 2003
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Good Morning. This is Ethan Greene with the
Current Conditions:
Our not-winter continued last
night with an inch or two of new snow with a tenth to a quarter inch of
water. As of yesterday afternoon the
rain/snow line was near 7,000’. Overnight
temperatures dipped into the mid 20’s at 8,000’ and upper teens at
10,000’. The winds have been from the
northwest in the 10 mph range in most areas.
Along the high ridgelines the winds have been in the 20 mph range with
gusts over 40 mph.
The snow surface is a mix of
firm crusts and damp powder under a few spongy inches of fresh snow.
Avalanche Conditions:
While it’s been a bit dreary
in the mountains the past few days, we did pickup a bit of snow and a fair
amount of water. Storm totals appear to
be around one inch of water at most locations.
In the
If the snow felt like a wet
noodle on Thursday it’s more like a frozen wet noodle this morning. Temperatures have been cooling over the past
two days, and with overnight lows in the mid 20’s I suspect the snow is frozen
at most locations. Even though we
haven’t had much of a winter, we still have a few avalanche issues to keep in
mind today.
First and foremost is the
sun. Although the new snow is not the
greatest snow on earth, if it gets a good shot of sun wet sluffs or point
releases are likely. Remember that
point-release avalanches are especially dangerous if they can push you off a
cliff or into a gulley. Second is the
wind. We still have some hard wind slabs
that formed earlier in the week.
Although they are mostly stable, I have been tiptoeing around them for
the past few days. The most likely place
to trigger a wind slab is a steep rocky area that generally has a shallow
snowpack or in an area that avalanched earlier in the season. Lastly there is an isolated chance of
triggering an avalanche that will break down into the deeper snow. These deep slab avalanches could be triggered
by smaller surface-snow avalanches on northwest through east facing slopes,
steeper than 35 degrees, in areas above 9,000’.
The upper portions of the
Bottom Line (SLC,
The avalanche danger is generally
isolated or LOW this
morning, but may increase to MODERATE
as the sun heats the new snow during the day.
With low clouds heating could occur on all aspects. There is also 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 and on very steep
rocky slopes with hard wind deposits.
Mountain Weather:
The Pacific storm system that
bought us warm and wet weather for the past few days is moving off to the
east. Today high pressure will build in
over northern
General Information:
Wasa
To report backcountry snow
and avalanche conditions, especially if you observe or trigger an avalanche,
remember that the information you have could save someone’s 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.
Evelyn Lees will update this advisory by
Thanks for calling!
________________________________________________________________________
National
Weather Service - Salt Lake City - Snow.
For an explanation of
avalanche danger ratings: