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”
April 12, 2007 7:30 am
Good morning, this is Evelyn Lees with the
Today is Thursday, April 12th. We are issuing advisories on an intermittent basis for the remainder of April.
Under mostly cloudy skies, temperatures this morning are in the teens to low 20’s and a few snow flakes are drifting down in the mountains. The southwesterly winds are light, averaging less than 15 mph at all stations. Stashes of very nice powder exist on sheltered, easterly and northerly facing slopes between areas of wind scour and breakable wind crusts that are just waiting to trip you up when you least expect. Most southerly and westerly facing slopes received just enough sun to crust. Several days of cooler temperatures are in the forecast, so the shady slopes should retain cool, dry powder through Saturday morning, though another round of strong northerly winds tonight will drift and scour the snow.
While most of Tuesday’s wind drifts settled out rapidly, backountry tourers were able to trigger a couple of 2 foot deep wind drifted pockets on Wednesday. These were in the closed for the season
If you are heading into the backcountry today, Thursday, be alert for a few lingering wind drifts that could be triggered on steep slopes, mostly on northerly and easterly facing slopes. By Friday morning, strong northerly winds will once again be drifting snow into sensitive drifts, both along and well off the ridgelines. Sensitive drifts will build up around terrain features such as sub ridges and breakovers. Approach any steep, wind drifted slope with caution. While slope cuts should be able to handle most of these drifts, a mistake could take you for a dangerous ride. Watch for any direct afternoon sun that could heat up the snow, and create wet sluffs.
On Saturday, mostly sunny skies and rapidly warming temperatures will make wet avalanche activity the main concern. As the snow warms, it will be possible to trigger both wet sluffs and slabs on steep, sunny slopes, taking out all the new snow from this past week. A few natural slides may be possible. In addition, isolated sensitive wind drifts will linger on the shady slopes.
A weak storm system
UDOT highway avalanche control work info can be found HERE or by calling (801) 975-4838.
Our statewide tollfree line is 1-888-999-4019 (early morning, option 8).
For our classic text advisory click HERE.
We appreciate all the great snowpack and avalanche observations we’ve been getting, so keep leaving us messages 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.
We will update this advisory on an intermittent basis for the rest of April and thanks for calling.