Utah Avalanche Center
New member
February 12, 2007 - 7:06 am
SUMMARY >>> Danger by
ASPECT & ELEVATION
BOTTOM LINE
on slopes over 35 degrees
An AVALANCHE WARNING continues for the mountains of northern Utah. Heavy snowfall and moderate to strong winds has resulted in unstable avalanche conditions and a HIGH AVALANCHE DANGER. Natural avalanching is possible with human triggered avalanches likely. Those without good route finding or avalanche skills should avoid the backcountry.
Hardesty
LINKS: -Danger scale- -Encyclopedia- -Text only- CURRENT CONDITIONS >>> LINKS TO MORE INFO: NWS SNOW PAGESNOTEL MAP
With the passing of the cold front, the Cottonwoods picked up another 6 of low density snow, pushing their storm totals to a foot and a half. On Saturday night and Sundays moist west to southwest flow, the Provo and Ogden area mountains were pummeled by 10-18 of heavy snow with water numbers pushing 2½ in Provo and 3½ in Ogden. Rain-snow lines from yesterday hovered at 7500, but have since lowered a couple thousand feet. The winds shifted to the northwest overnight and have been less than 20mph. The highest ridgelines still have speeds at 25-30mph with gusts to 40. Temps naturally cooled with frontal passage and are in the teens at most locations.
RECENT AVALANCHES AND SNOWPACK INFO >>> LINKS TO MORE INFO
AVALANCHE LISTPHOTOSACCIDENTSSNOW PROFILES The sheer water numbers in the Provo and Ogden mountains will have easily snapped the back of the weak snowpack in those areas and I expect, with increasing visibility, to see evidence of a good natural cycle. Ski control teams across the range all had good results with the storm and nearly every observer calling in reported sensitivity in the storm snow, with many slides stepping into older faceted snow. Bruce Tremper triggered perhaps the largest; a 2-3 deep and 500 wide avalanche on faceted snow in South Monitor along the Park City ridgeline. His and Brett Koberniks web galleries, plus a host of other photos from yesterday, can be found on our photos page here.
AVALANCHE CONCERNS >>> WHERE PROBABILITY SIZE TREND Likely
Unlikely Large
Small Increasing
Danger Same Decreasing
Danger over the next 24 hrs The danger will be every bit as significant as yesterday, and perhaps even more devious to those venturing into the backcountry. Without a storm raging, people tend to underestimate the danger, but lets be clear: the danger is still very real and getting caught in an avalanche today may be unsurvivable. Hard slab avalanches will continue to pull back onto lower angled slopes and slides will still be able to be triggered at a distance.
WHERE PROBABILITY SIZE TREND Likely
Unlikely Large
Small Increasing
Danger Same Decreasing
Danger over the next 24 hrs Mid and lower elevation shady slopes will still have the potential to gouge down into old wet saturated snow.
MOUNTAIN WEATHER >>> LINKS TO MORE INFO
UAC COMPILATION
NWS ZONAL FORECAST
SEASONAL Wx CHARTS Well see a bit of a break in the action this morning, but the next wave of moisture should move in this afternoon bringing a few flurries to the mountains. The northwesterly winds will blow 15-20mph. 8000 temps will be in the upper twenties with 10,000 temps in the mid-teens. Generally unsettled weather on a northwest flow is expected through the week with a system slated for the end of the week.
GENERAL ANNOUNCEMENTS >>> Yesterday, the Wasatch Powderbird Guides did not fly, but will try to get a ship into American Fork today. With questions regarding their areas of operation call 742-2800.Listen to the advisory. Try our new streaming audio or podcastsUDOT 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 a list of avalanche classes, click uac@avalanche.org (uac@avalanche.org). (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 Tuesday morning, and thanks for calling.
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.
This advisory provided by the Wasatch Cache National Forest, 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 Salt Lake County
The post was created using an automated process maintained by First Tracks! Online.
SUMMARY >>> Danger by
ASPECT & ELEVATION
BOTTOM LINE
on slopes over 35 degrees
An AVALANCHE WARNING continues for the mountains of northern Utah. Heavy snowfall and moderate to strong winds has resulted in unstable avalanche conditions and a HIGH AVALANCHE DANGER. Natural avalanching is possible with human triggered avalanches likely. Those without good route finding or avalanche skills should avoid the backcountry.
Hardesty
LINKS: -Danger scale- -Encyclopedia- -Text only- CURRENT CONDITIONS >>> LINKS TO MORE INFO: NWS SNOW PAGESNOTEL MAP
With the passing of the cold front, the Cottonwoods picked up another 6 of low density snow, pushing their storm totals to a foot and a half. On Saturday night and Sundays moist west to southwest flow, the Provo and Ogden area mountains were pummeled by 10-18 of heavy snow with water numbers pushing 2½ in Provo and 3½ in Ogden. Rain-snow lines from yesterday hovered at 7500, but have since lowered a couple thousand feet. The winds shifted to the northwest overnight and have been less than 20mph. The highest ridgelines still have speeds at 25-30mph with gusts to 40. Temps naturally cooled with frontal passage and are in the teens at most locations.
RECENT AVALANCHES AND SNOWPACK INFO >>> LINKS TO MORE INFO
AVALANCHE LISTPHOTOSACCIDENTSSNOW PROFILES The sheer water numbers in the Provo and Ogden mountains will have easily snapped the back of the weak snowpack in those areas and I expect, with increasing visibility, to see evidence of a good natural cycle. Ski control teams across the range all had good results with the storm and nearly every observer calling in reported sensitivity in the storm snow, with many slides stepping into older faceted snow. Bruce Tremper triggered perhaps the largest; a 2-3 deep and 500 wide avalanche on faceted snow in South Monitor along the Park City ridgeline. His and Brett Koberniks web galleries, plus a host of other photos from yesterday, can be found on our photos page here.
AVALANCHE CONCERNS >>> WHERE PROBABILITY SIZE TREND Likely
Unlikely Large
Small Increasing
Danger Same Decreasing
Danger over the next 24 hrs The danger will be every bit as significant as yesterday, and perhaps even more devious to those venturing into the backcountry. Without a storm raging, people tend to underestimate the danger, but lets be clear: the danger is still very real and getting caught in an avalanche today may be unsurvivable. Hard slab avalanches will continue to pull back onto lower angled slopes and slides will still be able to be triggered at a distance.
WHERE PROBABILITY SIZE TREND Likely
Unlikely Large
Small Increasing
Danger Same Decreasing
Danger over the next 24 hrs Mid and lower elevation shady slopes will still have the potential to gouge down into old wet saturated snow.
MOUNTAIN WEATHER >>> LINKS TO MORE INFO
UAC COMPILATION
NWS ZONAL FORECAST
SEASONAL Wx CHARTS Well see a bit of a break in the action this morning, but the next wave of moisture should move in this afternoon bringing a few flurries to the mountains. The northwesterly winds will blow 15-20mph. 8000 temps will be in the upper twenties with 10,000 temps in the mid-teens. Generally unsettled weather on a northwest flow is expected through the week with a system slated for the end of the week.
GENERAL ANNOUNCEMENTS >>> Yesterday, the Wasatch Powderbird Guides did not fly, but will try to get a ship into American Fork today. With questions regarding their areas of operation call 742-2800.Listen to the advisory. Try our new streaming audio or podcastsUDOT 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 a list of avalanche classes, click uac@avalanche.org (uac@avalanche.org). (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 Tuesday morning, and thanks for calling.
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.
This advisory provided by the Wasatch Cache National Forest, 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 Salt Lake County
The post was created using an automated process maintained by First Tracks! Online.