Wasatch Cache National Forest

In partnership with: The Friends of the Utah Avalanche Center, Utah Department of Public Safety Division of Comprehensive Emergency Management, Salt Lake County, and Utah State Parks

 

The Utah Avalanche Center Home page is: http://www.avalanche.org/~uac/

 

Avalanche advisory

Saturday, April 12, 2003

Good Morning. This is Ethan Greene with the Forest Service Utah Avalanche Center with your backcountry avalanche and mountain weather advisory for the Wasatch Range. Today is Saturday, April 12, 2003, and its about 7:30 in the morning.

 

Current Conditions:

Under mostly cloudy skies temperatures dipped into the upper 30s at 8,000 and mid 30s at 10,000 (mid 40s at 8,000 in the Provo and Ogden area mountains). Southwest winds have been blowing in the 15 mph range and gusting into the 30s. Along the highest peaks wind speeds are in the 30 mph range with gusts over 40 mph.

 

Yesterday the crusts softened by mid morning and corn hunting required careful aspect management. Although morning low temperatures are quite similar today, with cloudy skies the refreeze will be quite shallow this morning. Surface crusts will be breakable in mid elevation areas. But believe it or not there is still some soft snow on due north aspects above about 10,000.

 

Avalanche Conditions:

Over the past four days the backcountry avalanche activity has been limited to wet point-release avalanches running in the surface snow. The only exception was a slab avalanche that broke off of a steep rock slab in Broads Fork on Tuesday.

 

Overnight temperatures have been above freezing for the past three nights. Radiative cooling has helped the snow refreeze each night, but last night high clouds inhibited cooling at the snow surface. Today the skies will become partly cloudy by mid day and high temperatures will rise into the mid 50s. It might be a good day to go for a climb, a bike ride, or catch up on some work so you can enjoy the new snow expected on Monday and Tuesday. If youre headed for snow, the avalanche conditions will be changing during the day. When you see roller balls, small point-release avalanches, or youre sinking into the snow more that about 8 inches its time to get off of and out from under steep slopes. Traveling underneath snow resting on steep rock slabs, such as those in Stairs Gulch and Broads Fork, is not recommended.

 

Bottom Line (SLC, Park City, Ogden and Provo Area Mountains):

Today the avalanche danger is MODERATE at all elevations and on all aspects. With daytime heating the danger from natural avalanches will increase and may reach CONSIDERABLE on sun exposed slopes in the afternoon.

 

Western Uinta Mountains: Click Here

Logan call 435-797-4146 or Click Here.

 

Mountain Weather:

Today southwest winds will increase as a deep Pacific trough moves inland. Temperatures will rise into the mid 50s at 8,000 and to near 40 degrees at 10,000. Skies will be mostly cloudy this morning and become partly cloudy this afternoon. Southwest winds will increase into the 30 mph range during the day. Cloud cover and wind speeds will increase on Sunday with rain and snow likely on Monday. Mountains snow showers will continue into Tuesday. High pressure briefly builds in on Wednesday and a second trough is forecast to move into Utah towards the end of the week.

 

General Information:

Tomorrow will be the last morning advisory of the 2002-2003 season. We will issue afternoon updates on the Salt Lake City phone line (801-364-1581) and the Internet as needed until about the end of April.

 

Wasatch Powderbird Guides will not be flying today. For more information call 801-742-2800.

 

To report backcountry snow and avalanche conditions, especially if you observe or trigger an avalanche, call (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.

 

Bruce Tremper will update this advisory by 7:30 on Sunday morning.

 

Thanks for calling!

________________________________________________________________________

National Weather Service - Salt Lake City - Snow.

For an explanation of avalanche danger ratings:

http://www.avalanche.org/usdanger.htm