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 26, 2003
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Good Morning. This is Evelyn Lees with the
Under cloudy skies, winds are very light this morning, less than 10 mph, even across the highest ridges. Temperatures are in the teens. In the last 24 hours, most areas have picked up an additional 1-3 of light density snow. The mostly cloudy skies and cold temperatures of the past few days have preserved the powder on all aspects.
Yesterday, southerly facing
slopes got in on the avalanche action after lying quietly in wait for most of
the winter. A party skinning up one of
the south facing Emma ridges above the Town of
There has been no change to
the stability problems on the shady, northerly facing slopes. Yesterday, a couple staff members looked at
the very large slide in No-Name Bowl on
With our variable snow pack and numerous weak layers, all steep terrain is avalanche terrain. If you are venturing onto slopes steeper than about 35 degrees, you need to need to access their stability and realize human triggered avalanches are possible.
If the clouds thin today, heating from the sun will rapidly warm the surface snow, possibly triggering some new snow sluffs or shallow slabs. And while the winds are to remain very light, if you are in an area where they pick up, the avalanche danger will increase rapidly.
Activity in the Ogden Area Mountains from the past few days involved half a dozen human triggered slides that were new snow only, up to a foot deep and 100 wide. There are also reports of sensitive weak layers beneath some of the older hard wind slabs.
The Provo Area Mountains, in the southern part of the range, received more
snow and had widespread new snow avalanche activity yesterday on northeast,
east, southeast and southerly facing slopes.
Most of these slides were started by human triggered sluffs that then triggered
slabs, though a couple were remotely triggered from a distance. They were all new snow, averaged 60 to 200
wide, and some were very long running as is typical of the steep
Bottom Line (SLC,
The avalanche danger is MODERATE on slopes of all aspects, north, east, south and west, which are 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, especially on slopes facing northwest, north, northeast and east, creating larger dangerous avalanches. Slopes less steep than about 35 degrees have a generally LOW danger.
Bottom Line (
The avalanche danger today is CONSIDERABLE on and below all slopes approaching 35 degrees in steepness. Human triggered slides are probable and natural slides possible. The danger may rise with direct sun or daytime heating. .
Moist, unsettled weather will continue over the area through the weekend. Mostly cloudy skies today, with light snow showers adding up to another inch or two. Highs today in the mid teens at 10,000 and the mid 20s at 8,000. Winds will remain light, less than 10 mph, from the northwest. Partly cloudy skies tonight, with light northwest winds and lows near 10. A chance for light snow tomorrow and again on Saturday.
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 Thursday morning.
Thanks for calling!
For an explanation of avalanche danger ratings: