High Wind Watch issued February 21 at 1:20PM MST until February 23 at 11:00PM MST by NWS Glasgow MT
* WHAT...West winds 25 to 40 mph with gusts up to 60 mph possible. * WHERE...Southwest Phillips County. * WHEN...From late Saturday night through Sunday evening. * IMPACTS...High winds may move loose debris, damage property, and cause power bumps. Travel could be difficult, especially for high profile vehicles.
Winter Weather Advisory issued February 21 at 1:17PM MST until February 23 at 8:00AM MST by NWS Missoula MT
* WHAT...Freezing rain expected. Total ice accumulations of a glaze to up to one tenth of an inch on ground surfaces. * WHERE...Highway 2 Kalispell to Libby, Flathead Lake, Highway 56 Bull Lake Road, Polebridge, Marias Pass, Highway 37 Eureka to Libby, Highway 93 Eureka to Whitefish, Highway 83 Bigfork to Swan Lake, Essex, Flathead Valley, Mission Valley, Polson, and Bad Rock Canyon. * WHEN...From 11 PM Saturday to 8 AM MST Sunday. * IMPACTS...Icy conditions will impact travel, with the most difficult travel conditions on secondary, gravel and dirt roadways. * ADDITIONAL DETAILS...Cold ground temperatures will allow for rain
Hydrologic Outlook issued February 21 at 2:16PM MST by NWS Missoula MT
ESFMSO Where: Powell, Deer Lodge, and Silver Bow Counties in Montana and Lemhi County in Idaho. What: A significant warm up is expected this weekend into early next week (February 24). High temperatures will reach into the 40s, with overnight temperatures near or above freezing. Rapid lowland snowmelt will lead to ponding of water in low lying areas, especially in areas of poor drainage and/or in basements/crawlspaces. Ice jam releases are also a concern on small streams and/or creeks, and may lead to localized flooding. Rain showers will bring precipitation totals up to 0.20 inches across valley areas Sunday into
Hydrologic Outlook issued February 21 at 1:23PM MST by NWS Pocatello ID
ESFPIH Temperatures will gradually warm this weekend into early next week, increasing low elevation snowmelt and runoff, potentially leading to minor lowland flooding. Locations most prone to rapid snowmelt include areas below 6000 ft across the Eastern Magic Valley, Lower Snake Plain, and South Hills. In these areas, the increased runoff on top of frozen or saturated ground may lead to ponding of water or sheet flooding in low lying or poor drainage areas, along with rises on small streams and creeks. These warming temperatures will peak on Monday, with afternoon highs reaching the 50s at lower elevations. Low temperatures
Avalanche Advisory issued February 21 at 6:35AM MST by NWS Pocatello ID
SABPIH THE FOLLOWING MESSAGE IS TRANSMITTED AT THE REQUEST OF THE FOREST SERVICE UTAH AVALANCHE CENTER. THE FOREST SERVICE UTAH AVALANCHE CENTER HAS ISSUED A SPECIAL AVALANCHE BULLETIN FOR THE FOLLOWING AREAS: * WHAT...THE AVALANCHE DANGER IS CONSIDERABLE IN MANY AREAS, MODERATE IN OTHERS. * WHERE...FOR THE MOUNTAINS OF UTAH AND SOUTHEAST IDAHO, INCLUDING THE WASATCH RANGE, BEAR RIVER RANGE, UINTA MOUNTAINS, WASATCH PLATEAU, AND MANTI SKYLINE. * WHEN...UNTIL 6 AM MST SUNDAY. * IMPACTS...A SERIES OF STORMS IN THE LAST WEEK HAS LEFT A THICK BLANKET OF SNOW AT ALL ELEVATIONS, CREATING EXCELLENT POWDER RIDING CONDITIONS WHILE ALSO ELEVATING
Hydrologic Outlook issued February 21 at 4:45PM MST by NWS Billings MT
ESFBYZ A deep and wet snowpack exists across the forecast area. 1 to 4 inches of water is locked in this snowpack. Warmer temperatures forecast over the coming days will increase snowmelt, releasing this water. With the ground frozen, water will not be able to soak in and will run off. Water flowing overland and accumulating in low lying areas may result in localized flooding. Water flowing into creeks and rivers will increase the potential for ice jam development and may result in additional flooding near waterways. Localized impacts from snowmelt may be ongoing over the western foothills and valleys.
Hydrologic Outlook issued February 21 at 3:46PM MST by NWS Glasgow MT
ESFGGW Where: All of Northeast Montana. When: Saturday afternoon through the end of February. What: As arctic air pushes east into the central plains, a ridge will move in to bring temperatures above average from Sunday through the end of the week. Although temperatures each night will drop near or below freezing, warm daytime temperatures will increase snowmelt and lead to ponding in low lying areas. There is moderate confidence precipitation amounts are expected to remain below one tenth of an inch Sunday night into Monday night, so little to no impact on runoff is expected from this event. Make
Dense Fog Advisory issued February 21 at 4:35AM MST until February 21 at 11:00AM MST by NWS Salt Lake City UT
* WHAT...Visibility of one-quarter mile or less in dense fog. * WHERE...Eastern Box Elder County and Northern Wasatch Front. * WHEN...Until 11 AM MST this morning. * IMPACTS...Low visibility could make driving conditions hazardous. * ADDITIONAL DETAILS...Areas especially impacted include I-15 from Brigham City to Ogden, the Legacy Parkway, and portions of the West Davis Highway.
Winter Storm Warning issued February 20 at 4:50PM MST until February 20 at 11:00PM MST by NWS Salt Lake City UT
* WHAT...Heavy snow. Additional snow accumulations up to two inches. * WHERE...Southwest Wyoming. * WHEN...Until 11 PM MST this evening. * IMPACTS...Some impacts expected. Roads may be slick in spots due to slush, snow, and drifted snow. Winter driving conditions are expected.
Winter Weather Advisory issued February 20 at 2:52PM MST until February 21 at 5:00AM MST by NWS Cheyenne WY
* WHAT...Snow. Additional snow accumulations between 2 and 4 inches possible with total amounts between 4 and 7 inches. * WHERE...Sierra Madre Range. * WHEN...Until 5 AM MST Friday. * IMPACTS...Outdoor recreation could become dangerous to those caught unprepared for hazardous winter conditions. Hunters, hikers, and snowmobilers may become disoriented and lost due to low visibility in falling and blowing snow. Plan on slippery road conditions. The hazardous conditions could impact the Thursday morning and evening commutes.