In partnership with: Utah Division of State Parks and Recreation, The Friends of the Utah Avalanche Center, Utah Department of Emergency Services and Homeland Security and
“keeping you on top”
February 01, 2008 7:30 am
Good morning, this is Bruce Tremper with the
Special Avalanche Advisory:
We’ve have heavy snow
overnight with about a foot in the higher elevations with as much as 17 inches
at the top of Brighton. We’re expecting perhaps another 6 inches of snow this
morning before it slows down to showers by mid day. Trailbreaking was hard yesterday and it
should be nearly impossible today, at least in the higher elevations that got
the most snow. Yesterday and last night,
the wind blew fairly hard from the southwest, 20 gusting to 40 on most ridge
tops and 35 gusting to 75 on the highest peaks.
video clip from yesterday’s field work) The winds were from the southwest
overnight and have shifted to the west and northwest this morning. Ridge top temperatures have risen from near-zero yesterday morning to the mid teens this morning.
Snow and Avalanche Discussion:
The main concern today will obviously be the new snow and wind. With high precipitation rates this morning, you can expect sluffing and some soft slab activity within the new snow especially in higher elevation wind-affected terrain. The snow should be sensitive to human triggers with some natural avalanches possible this morning. Although most of the old snow is quite solid, there is still the possibility that some of these new snow avalanches might step down to deeper weak layers, especially old wind slabs from yesterday and last night.
Bottom Line for the
The avalanche danger is CONSIDERABLE on slopes approaching 35 degrees or steeper where there is more than about a foot of new snow, especially on slopes with recent deposits of wind drifted snow. You will find these drifts mostly along the higher ridgelines. If we get 2 feet of snow or with high precipitation rates the danger may rise to HIGH. Slopes with less new snow, non-wind drifted slopes and slopes less than about 35 degrees will have a MODERATE danger.
Snow should continue through
much of the day with 6 inches of snow this morning before it becomes showery by
mid day. We may get some instability
showers this afternoon, which could add even more snow, bringing storm totals
close to two feet. Ridge top winds
should slow down and blow at a more reasonable 10-15 mph from the west and northwest
with ridge top temperatures in the mid teens.
8,000’ temperatures should be in the lower 20’s. Skies should be overcast to partly cloudy all
For the extended forecast, we should get a welcome break in the action Saturday with partly cloudy skies but another storm on Sunday and Monday and yet another on Wednesday and Thursday.
Alta Forecast Graph
Yesterday, Wasatch Powderbird Guides got out briefly yesterday and will not fly today due to weather. For more detailed information please call (801) 742-2800 or go to their daily blog.
The second annual avalanche awareness snowmobile ride is Saturday, February 2nd and proceeds will help support snowmobile specific avalanche awareness projects. Details can be found at http://www.avarides.com/
Backcountry Awareness Week is February 8-10th,
featuring a Friday night fundraising dinner with guest speaker David Oliver
Relin, author of the New York Times bestseller Three Cups of Tea: One Man's
If you want to get this avalanche advisory e-mailed to you daily click HERE.
UDOT highway avalanche control work info can be found by calling (801) 975-4838.
Our statewide tollfree line is 1-888-999-4019 (early morning, option 8).
The UAC depends on contributions from users like you to support our work. To find out more about how you can support our efforts to continue providing the avalanche forecasting and education that you expect please visit our Friends page.
If you see any avalanches or interesting snow conditions, please leave us a message at (801) 524-5304 or 1-800-662-4140, or email us at [email protected]. (Fax 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.
Brett Kobernik will update this advisory by 7:30 on Saturday morning.