Winter Storm Warning
URGENT - WINTER WEATHER MESSAGE
National Weather Service Missoula MT
222 AM MST Fri Dec 5 2025
IDZ005-006-060930-
/O.CON.KMSO.WS.W.0012.000000T0000Z-251207T0000Z/
Northern Clearwater Mountains-Southern Clearwater Mountains-
122 AM PST Fri Dec 5 2025
...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 PM PST SATURDAY...
* WHAT...Heavy snow expected. There is a likelihood of major winter
storm impacts. Total snow accumulations 2 to 6 inches in the
valleys and 9 to 18 inches in the higher terrain including Lolo
Pass.
* WHERE...Highway 11 Pierce to Headquarters, Highway 12 Lowell to
Lolo Pass, Pierce, Dixie, Elk River, and Elk City.
* WHEN...Until 4 PM PST Saturday.
* IMPACTS...Travel could be very difficult to impossible. The
hazardous conditions could impact the Friday morning and evening
commutes, especially over higher passes.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. The latest road conditions for
the state you are calling from can be obtained by calling 5 1 1.
&&
$$
URGENT - WINTER WEATHER MESSAGE
National Weather Service Missoula MT
222 AM MST Fri Dec 5 2025
MTZ004-060930-
/O.CON.KMSO.WS.W.0012.000000T0000Z-251207T0000Z/
Lower Clark Fork Region-
222 AM MST Fri Dec 5 2025
...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST SATURDAY...
* WHAT...Heavy snow expected. There is a likelihood of major winter
weather impacts. Total snow accumulations of 1 to 4 inches in the
valleys and 8 to 14 inches in the higher terrain including Lookout
Pass and Evaro Hill.
* WHERE...I-90 Lookout Pass to Haugan, Highway 200 Trout Creek to
Heron, Evaro Hill, and Highway 200 Thompson Falls to Plains.
* WHEN...Until 5 PM MST Saturday.
* IMPACTS...Travel could be very difficult. The hazardous conditions
could impact the Friday morning and evening commutes, especially
over higher passes.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. The latest road conditions for
the state you are calling from can be obtained by calling 5 1 1.
&&
$$
URGENT - WINTER WEATHER MESSAGE
National Weather Service Missoula MT
222 AM MST Fri Dec 5 2025
MTZ006-060930-
/O.CON.KMSO.WS.W.0012.000000T0000Z-251207T0000Z/
Bitterroot/Sapphire Mountains-
222 AM MST Fri Dec 5 2025
...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST SATURDAY...
* WHAT...Heavy snow expected. There is a likelihood of major winter
storm impacts. Total snow accumulations 1 to 5 inches in the
valleys and 8 to 15 inches in the higher terrain including Lolo
and Lost Trail Passes. Winds gusting as high as 40 mph on Friday.
* WHERE...Lolo Pass and Highway 93 Sula to Lost Trail Pass.
* WHEN...Until 5 PM MST Saturday.
* IMPACTS...Travel could be very difficult to impossible. The
hazardous conditions could impact the Friday morning and evening
commutes, especially over higher passes.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. The latest road conditions for
the state you are calling from can be obtained by calling 5 1 1.
&&
$$
URGENT - WINTER WEATHER MESSAGE
National Weather Service Missoula MT
222 AM MST Fri Dec 5 2025
MTZ043-060930-
/O.CON.KMSO.WS.W.0012.000000T0000Z-251207T0000Z/
Potomac/Seeley Lake Region-
222 AM MST Fri Dec 5 2025
...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST SATURDAY...
* WHAT...Heavy Snow expected. There is a likelihood of major winter
weather impacts. Total snow accumulations between 5 to 10 inches.
* WHERE...Highway 83 Seeley Lake to Condon, I-90 East Missoula to
Bearmouth, and Highway 200 Bonner to Greenough.
* WHEN...Until 5 PM MST Saturday.
* IMPACTS...Travel could be very difficult. The hazardous conditions
could impact the Friday morning and evening commutes, especially
over higher passes.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. The latest road conditions for
the state you are calling from can be obtained by calling 5 1 1.
&&
$$
URGENT - WINTER WEATHER MESSAGE
National Weather Service Billings MT
159 AM MST Fri Dec 5 2025
MTZ067-068-060900-
/O.CON.KBYZ.WS.W.0017.000000T0000Z-251206T2100Z/
Absaroka/Beartooth Mountains-Crazy Mountains-
Including the locations of Cooke City
159 AM MST Fri Dec 5 2025
...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 2 PM MST SATURDAY...
* WHAT...Periods of moderate to heavy snowfall. Total snow
accumulations between 12 and 24 inches, greatest on west facing
slopes including the mountains around Cooke City. Mountain top
winds gusting as high as 50 mph.
* WHERE...Absaroka/Beartooth Mountains and Crazy Mountains.
* WHEN...Until 2 PM MST Saturday.
* IMPACTS...Mountain recreation will be impacted by heavy
accumulating snow and blowing snow.
* ADDITIONAL DETAILS...The mountains around Red Lodge will see much
less snowfall, 1 to 5 inches.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Those in the backcountry should ensure they are prepared for
dangerous winter conditions.
&&
$$
URGENT - WINTER WEATHER MESSAGE
National Weather Service Riverton WY
1244 AM MST Fri Dec 5 2025
WYZ012-024-052300-
/O.CON.KRIW.WS.W.0012.000000T0000Z-251206T2100Z/
Teton and Gros Ventre Mountains-Salt River and Wyoming Ranges-
1244 AM MST Fri Dec 5 2025
...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 2 PM MST SATURDAY...
* WHAT...Heavy snow expected. Additional snow accumulations of 10 to
20 inches with the highest elevations seeing 2 to 3 feet. Gusty
winds of 25 to 40 mph will be common. Higher elevations of the
Salt River and Wyoming Ranges could gust above 45 mph.
* WHERE...Teton and Gros Ventre Mountains and Salt River and Wyoming
Ranges.
* WHEN...Until 2 PM MST Saturday.
* IMPACTS...Travel could be very difficult, especially over Teton,
Togwotee, and Salt River Passes. The hazardous conditions could
impact the Friday morning and evening commutes.
* ADDITIONAL DETAILS...Snow is expected to lighten in intensity
between 8AM and 2PM Friday, with accumulations generally between 1
and 5 inches. Moderate to heavy snowfall begins after 3PM Friday
and continues through the overnight hours, this is when a bulk of
the snow accumulations will occur. Gusty west winds of 25 to 40
mph, and possibly above 45 mph across higher elevations, occur
after sunset Friday and continue into Saturday morning. Heavy
snowfall and gusty winds could cause reduced visibility and
drifting snow.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.
For graphical depictions of the snowfall forecast, including the
official NWS forecast, high end amounts, and low end amounts, visit
https://weather.gov/riw/winter .
For winter road conditions from the Wyoming Department of
Transportation, visit https://wyoroad.info .
&&
$$
URGENT - WINTER WEATHER MESSAGE
National Weather Service Pocatello ID
351 PM MST Thu Dec 4 2025
IDZ058>066-051130-
/O.CON.KPIH.WS.W.0008.251205T0000Z-251206T1200Z/
Marsh and Arbon Highlands-Franklin/Eastern Oneida Region-Bear
River Range-Bear Lake Valley-Blackfoot Mountains-Caribou Range-
Big Hole Mountains-Teton Valley-Centennial Mountains - Island
Park-
Including the cities of Wayan, Georgetown, Driggs, Grace, Downey,
Tetonia, Preston, Kilgore, Emigration Summit, Soda Springs,
Victor, Island Park, Thatcher, Montpelier, Swan Valley, Lava Hot
Springs, St. Charles, Inkom, Ashton, Bone, Malad, McCammon, and
Henry
351 PM MST Thu Dec 4 2025
...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST SATURDAY...
* WHAT...Heavy snow expected at times. Total snow accumulations
through Friday night between 3 and 6 inches in the valleys and 10
to 18 inches in the mountains. A few locations above 8000 ft could
see higher amounts with snow rates approaching an inch per hour at
times. Very gusty winds developing late Friday into Friday night.
* WHERE...Big Hole Mountains, Centennial Mountains - Island Park,
Teton Valley, Bear Lake Valley, Bear River Range, Blackfoot
Mountains, Caribou Range, Franklin/Eastern Oneida Region, and
Marsh and Arbon Highlands.
* WHEN...Until 5 AM MST Saturday.
* IMPACTS...Travel could be very difficult to impossible. The
hazardous conditions could impact the Friday morning commute.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. Call 5 1 1 or visit
511.idaho.gov for the latest road conditions.
&&
$$
URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
146 PM MST Thu Dec 4 2025
...SERIES OF WINTER STORMS TO AFFECT THE MOUNTAINS AND PASSES
THROUGH THE SATURDAY...
.The first round of heavy snow is expected to last through early
Friday morning and will primarily focus on the mountains of central
and southwest Montana with 4 to 8 inches possible along the mountain
passes including Bozeman and Kings Hill Pass. A period of lighter
snowfall is expected Friday morning and afternoon. The second and
more widespread round of heavier snowfall is expected to arrive
Friday evening and continue into Saturday evening with an additional
6 to 12 inches possible over the passes and higher amounts above
pass level.
MTZ317-320-330-051200-
/O.CON.KTFX.WS.W.0019.000000T0000Z-251206T2100Z/
Little Belt and Highwood Mountains-Big Belt, Bridger and Castle
Mountains-Gallatin and Madison County Mountains and Centennial
Mountains-
Including the following locations: Maudlow, Big Sky, West
Yellowstone, Kings Hill Pass, Trident, Monarch, Targhee Pass,
Neihart, Deep Creek Pass, Bozeman Pass, Battle Ridge Pass, and
Raynolds Pass
146 PM MST Thu Dec 4 2025
...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 2 PM MST SATURDAY...
* WHAT...Heavy snow expected. Snowfall totals between 8 and 12
inches at pass level and up to 24 inches above pass level. Winds
gusting as high as 45 mph.
* WHERE...Big Belt, Bridger and Castle Mountains, Little Belt and
Highwood Mountains, and Gallatin and Madison County Mountains and
Centennial Mountains.
* WHEN...Until 2 PM MST Saturday.
* IMPACTS...Travel could be very difficult and tire chains may be
required for some vehicles. Those in the backcountry should ensure
they are prepared for dangerous conditions.
* ADDITIONAL DETAILS...Significant travel impacts to the Thursday
and Friday commutes are possible for Bozeman Pass and along
Highway 191 south of Bozeman.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. The latest road conditions can
be obtained by calling 5 1 1 or visiting the MDT Road Report website.
Remember, a Winter Storm Warning means that there is at least an 80%
chance of impactful winter weather conditions during the warning
period.
&&
$$
URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
146 PM MST Thu Dec 4 2025
...SERIES OF WINTER STORMS TO AFFECT THE MOUNTAINS AND PASSES
THROUGH THE SATURDAY...
.The first round of heavy snow is expected to last through early
Friday morning and will primarily focus on the mountains of central
and southwest Montana with 4 to 8 inches possible along the mountain
passes including Bozeman and Kings Hill Pass. A period of lighter
snowfall is expected Friday morning and afternoon. The second and
more widespread round of heavier snowfall is expected to arrive
Friday evening and continue into Saturday evening with an additional
6 to 12 inches possible over the passes and higher amounts above
pass level.
MTZ327-051200-
/O.UPG.KTFX.WS.A.0018.251205T1200Z-251207T0000Z/
/O.EXB.KTFX.WS.W.0019.251205T0000Z-251207T0000Z/
Northwest Beaverhead County-
Including the following locations: Dewey, Chief Joseph Pass, Big
Hole Pass, Wisdom, and Wise River
146 PM MST Thu Dec 4 2025
...WINTER STORM WARNING IN EFFECT FROM 5 PM THIS AFTERNOON TO 5 PM
MST SATURDAY...
* WHAT...Heavy snow expected. Snowfall totals between 2 and 6 inches
in the Big Hole Valley and between 8 and 15 inches at pass level.
Winds gusting as high as 40 mph.
* WHERE...Northwest Beaverhead County.
* WHEN...From 5 PM this afternoon to 5 PM MST Saturday.
* IMPACTS...Travel could be very difficult and tire chains may be
required for some vehicles. Those in the backcountry should ensure
they are prepared for dangerous conditions. Gusty winds could
bring down tree branches.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. The latest road conditions can
be obtained by calling 5 1 1 or visiting the MDT Road Report website.
Remember, a Winter Storm Warning means that there is at least an 80%
chance of impactful winter weather conditions during the warning
period.
&&
$$
Winter Weather Advisory
URGENT - WINTER WEATHER MESSAGE
National Weather Service Missoula MT
222 AM MST Fri Dec 5 2025
IDZ009-010-051800-
/O.CON.KMSO.WW.Y.0046.000000T0000Z-251205T1800Z/
Western Lemhi County-Eastern Lemhi County-
222 AM MST Fri Dec 5 2025
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST THIS
MORNING...
* WHAT...Snow. There is a likelihood of developing or ongoing minor
winter weather impacts. Additional snow accumulations up to one
inch.
* WHERE...Highway 93 Lost Trail Pass to Gibbonsville, Lemhi Pass,
Shoup, Salmon, Bannock Pass, Williams Creek Summit, and Highway 28
Tendoy to Lone Pine.
* WHEN...Until 11 AM MST this morning.
* IMPACTS...Winter traveling conditions. For MINOR winter weather
impacts, expect a few inconveniences to normal activities. Use
caution while driving. The hazardous conditions could impact the
Friday morning commute, especially over higher passes.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Slow down and use caution while traveling. The latest road
conditions for the state you are calling from can be obtained by
calling 5 1 1.
&&
$$
URGENT - WINTER WEATHER MESSAGE
National Weather Service Missoula MT
222 AM MST Fri Dec 5 2025
MTZ005-060600-
/O.EXT.KMSO.WW.Y.0046.000000T0000Z-251206T0600Z/
Missoula/Bitterroot Valleys-
222 AM MST Fri Dec 5 2025
...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 11 PM MST THIS
EVENING...
* WHAT...Snow. A lull in precipitation is expected through 2 pm.
Then moderate to heavy snow showers are expected. Snow rates of
0.50 to 1 inch per hour possible along with wind gusts up to 40
mph.
* WHERE...North of Hamilton in the Bitterroot Valley and Missoula.
* WHEN...Until 11 PM MST this evening.
* IMPACTS...Winter traveling conditions. For MINOR winter weather
impacts, expect a few inconveniences to normal activities. Use
caution while driving. The hazardous conditions could impact the
Friday morning and evening commutes, especially over higher passes.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Slow down and use caution while traveling. The latest road
conditions for the state you are calling from can be obtained by
calling 5 1 1.
&&
$$
URGENT - WINTER WEATHER MESSAGE
National Weather Service Missoula MT
222 AM MST Fri Dec 5 2025
MTZ007-060600-
/O.EXT.KMSO.WW.Y.0046.000000T0000Z-251206T0600Z/
Butte/Blackfoot Region-
222 AM MST Fri Dec 5 2025
...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 11 PM MST THIS
EVENING...
* WHAT...Snow. There is a likelihood of developing or ongoing minor
winter weather impacts. Additional snow accumulations between 1
and 6 inches. Winds gusting as high as 35 mph.
* WHERE...Butte, Georgetown Lake, Homestake Pass, Highway 12
Garrison to Elliston, and MacDonald Pass.
* WHEN...Until 11 PM MST this evening.
* IMPACTS...Winter traveling conditions. For MINOR winter weather
impacts, expect a few inconveniences to normal activities. Use
caution while driving. The hazardous conditions could impact the
Friday morning and evening commutes, especially over higher passes.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Slow down and use caution while traveling. The latest road
conditions for the state you are calling from can be obtained by
calling 5 1 1.
&&
$$
URGENT - WINTER WEATHER MESSAGE
National Weather Service Billings MT
159 AM MST Fri Dec 5 2025
MTZ171-052100-
/O.CON.KBYZ.WW.Y.0039.000000T0000Z-251205T2100Z/
Pryor/Northern Bighorn Mountains-
159 AM MST Fri Dec 5 2025
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 2 PM MST THIS
AFTERNOON...
* WHAT...Occasional snow. Total snow accumulations between 4 and 8
inches, greatest on northwest aspects. Winds gusting as high as 35
mph.
* WHERE...Pryor/Northern Bighorn Mountains.
* WHEN...Until 2 PM MST this afternoon.
* IMPACTS...Mountain recreation will be impacted by accumulating snow
and areas of blowing snow.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Those in the backcountry should ensure they are prepared for wintry
conditions.
&&
$$
Additional graphics for this hazard can be found at
http://www.weather.gov/billings
Lester
URGENT - WINTER WEATHER MESSAGE
National Weather Service Riverton WY
1244 AM MST Fri Dec 5 2025
WYZ001-002-052300-
/O.CON.KRIW.WW.Y.0034.000000T0000Z-251206T2100Z/
Yellowstone National Park-Absaroka Mountains-
Including the cities of Old Faithful, Mammoth, and Lake
1244 AM MST Fri Dec 5 2025
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 2 PM MST
SATURDAY...
* WHAT...Snow expected. Additional snow accumulations of 4 to 8
inches; accumulations of 10 to 15 inches at the South and
Northeast entrances and near Pahaska; locally higher amounts of 20
to 25 inches in the higher elevations in the Pitchstone Plateau
and the western slopes of the Absarokas. Gusty winds of 20 to 35
mph across Yellowstone National Park and 30 to 50 mph across the
Absaroka Mountains.
* WHERE...Absaroka Mountains and Yellowstone National Park.
* WHEN...Until 2 PM MST Saturday.
* IMPACTS...Travel could be very difficult. The hazardous conditions
could impact the Friday morning and evening commutes.
* ADDITIONAL DETAILS...Snow is expected to lighten in intensity
between 8AM and 2PM Friday, with accumulations generally between 1
and 4 inches. Moderate to heavy snowfall begins after 3PM Friday
and continues through the overnight hours, this is when a bulk of
the additional snow accumulations will occur. Gusty winds are
expected after sunset Friday and continue into Saturday morning.
Heavy snowfall and gusty winds could cause reduced visibility and
drifting snow.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Slow down and use caution while traveling.
For graphical depictions of the snowfall forecast, including the
official NWS forecast, high end amounts, and low end amounts, visit
https://weather.gov/riw/winter .
For winter road conditions from the Wyoming Department of
Transportation, visit https://wyoroad.info .
&&
$$
URGENT - WINTER WEATHER MESSAGE
National Weather Service Riverton WY
1244 AM MST Fri Dec 5 2025
WYZ008-052300-
/O.CON.KRIW.WW.Y.0034.000000T0000Z-251206T2100Z/
Bighorn Mountains West-
1244 AM MST Fri Dec 5 2025
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 2 PM MST
SATURDAY...
* WHAT...Snow expected. Additional snow accumulations of 8 to 15
inches from Cloud Peak and Granite Pass northward. Snow amounts of
1 to 5 inches south of Powder River Pass.
* WHERE...Bighorn Mountains West.
* WHEN...Until 2 PM MST Saturday.
* IMPACTS...Travel could be very difficult. The hazardous conditions
could impact the Friday morning and evening commutes.
* ADDITIONAL DETAILS...Snow is expected to lighten in intensity
between 8AM and 2PM Friday, with accumulations generally between 1
and 3 inches. Moderate to heavy snowfall begins after 3PM Friday
and continues through the overnight hours, this is when a bulk of
the additional snow accumulations will occur.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Slow down and use caution while traveling.
For graphical depictions of the snowfall forecast, including the
official NWS forecast, high end amounts, and low end amounts, visit
https://weather.gov/riw/winter .
For winter road conditions from the Wyoming Department of
Transportation, visit https://wyoroad.info .
&&
$$
URGENT - WINTER WEATHER MESSAGE
National Weather Service Riverton WY
1244 AM MST Fri Dec 5 2025
WYZ013-023-052300-
/O.CON.KRIW.WW.Y.0034.000000T0000Z-251206T2100Z/
Jackson Hole-Star Valley-
Including the cities of Jackson, Afton, Thayne, Star Valley
Ranch, and Alpine
1244 AM MST Fri Dec 5 2025
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 2 PM MST
SATURDAY...
* WHAT...Snow expected. Additional snow accumulations of 4 to 8
inches, with locally higher amounts of 9 to 14 inches in the
foothill areas. Gusty winds of 20 to 25 mph.
* WHERE...Jackson Hole and Star Valley.
* WHEN...Until 2 PM MST Saturday.
* IMPACTS...Travel could be very difficult. The hazardous conditions
could impact the Friday morning and evening commutes.
* ADDITIONAL DETAILS...Snow is expected to lighten in intensity
between 8AM and 2PM Friday, with accumulations generally between 1
and 3 inches. Moderate to heavy snowfall begins after 3PM Friday
and continues through the overnight hours, this is when a bulk of
the additional snow accumulations will occur. Gusty west winds of
20 to 25 mph are expected after sunset Friday and continue into
Saturday morning. Heavy snowfall and gusty winds could cause
reduced visibility and drifting snow.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Slow down and use caution while traveling.
For graphical depictions of the snowfall forecast, including the
official NWS forecast, high end amounts, and low end amounts, visit
https://weather.gov/riw/winter .
For winter road conditions from the Wyoming Department of
Transportation, visit https://wyoroad.info .
&&
$$
URGENT - WINTER WEATHER MESSAGE
National Weather Service Pocatello ID
351 PM MST Thu Dec 4 2025
IDZ053-051130-
/O.NEW.KPIH.WW.Y.0019.251205T0000Z-251206T1200Z/
Upper Snake River Plain-
Including the cities of St. Anthony, Idaho Falls, and Rexburg
351 PM MST Thu Dec 4 2025
...WINTER WEATHER ADVISORY IN EFFECT UNTIL 5 AM MST SATURDAY...
* WHAT...Snow expected. Total snow accumulations between 2 and 6
inches with totals closer to the higher end of that range from
Rexburg northward. Very gusty winds developing late Friday into
Friday night.
* WHERE...Upper Snake River Plain.
* WHEN...Until 5 AM MST Saturday.
* IMPACTS...Travel could be very difficult. The hazardous conditions
could impact the Thursday evening and Friday commutes.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Slow down and use caution while traveling. Call 5 1 1 or visit
511.idaho.gov for the latest road conditions.
&&
$$
URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
146 PM MST Thu Dec 4 2025
...SERIES OF WINTER STORMS TO AFFECT THE MOUNTAINS AND PASSES
THROUGH THE SATURDAY...
.The first round of heavy snow is expected to last through early
Friday morning and will primarily focus on the mountains of central
and southwest Montana with 4 to 8 inches possible along the mountain
passes including Bozeman and Kings Hill Pass. A period of lighter
snowfall is expected Friday morning and afternoon. The second and
more widespread round of heavier snowfall is expected to arrive
Friday evening and continue into Saturday evening with an additional
6 to 12 inches possible over the passes and higher amounts above
pass level.
MTZ322-051200-
/O.NEW.KTFX.WW.Y.0052.251205T0000Z-251205T1800Z/
Elkhorn and Boulder Mountains-
Including the following locations: Clancy, Elk Park Pass,
Boulder, Homestake Pass, Wickes, Corbin, and Montana City
146 PM MST Thu Dec 4 2025
...WINTER WEATHER ADVISORY IN EFFECT FROM 5 PM THIS AFTERNOON TO 11
AM MST FRIDAY...
* WHAT...Snow expected. Total snow accumulations between 2 and 6
inches.
* WHERE...Elkhorn and Boulder Mountains.
* WHEN...From 5 PM this afternoon to 11 AM MST Friday.
* IMPACTS...Plan on slippery road conditions. The hazardous
conditions could impact the Thursday evening and Friday morning
commutes.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Slow down and use caution while traveling. The latest road
conditions can be obtained by calling 5 1 1 or visiting the MDT Road
Report website.
Remember, a Winter Weather Advisory means that there is at least an
80% chance of minor impacts due to winter weather conditions during
the advisory period.
&&
$$
URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
146 PM MST Thu Dec 4 2025
...SERIES OF WINTER STORMS TO AFFECT THE MOUNTAINS AND PASSES
THROUGH THE SATURDAY...
.The first round of heavy snow is expected to last through early
Friday morning and will primarily focus on the mountains of central
and southwest Montana with 4 to 8 inches possible along the mountain
passes including Bozeman and Kings Hill Pass. A period of lighter
snowfall is expected Friday morning and afternoon. The second and
more widespread round of heavier snowfall is expected to arrive
Friday evening and continue into Saturday evening with an additional
6 to 12 inches possible over the passes and higher amounts above
pass level.
MTZ326-051200-
/O.NEW.KTFX.WW.Y.0052.251204T2300Z-251205T1800Z/
Gallatin Valley-
Including the following locations: Bozeman and Gallatin Gateway
146 PM MST Thu Dec 4 2025
...WINTER WEATHER ADVISORY IN EFFECT FROM 4 PM THIS AFTERNOON TO 11
AM MST FRIDAY...
* WHAT...Snow expected. Total snow accumulations between 2 and 4
inches.
* WHERE...Gallatin Valley.
* WHEN...From 4 PM this afternoon to 11 AM MST Friday.
* IMPACTS...Plan on slippery road conditions. The hazardous
conditions could impact the Thursday evening and Friday morning
commutes.
* ADDITIONAL DETAILS...There will be a lull in the snow Friday
afternoon with another round of snow expected Friday evening into
Saturday afternoon.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Slow down and use caution while traveling. The latest road
conditions can be obtained by calling 5 1 1 or visiting the MDT Road
Report website.
Remember, a Winter Weather Advisory means that there is at least an
80% chance of minor impacts due to winter weather conditions during
the advisory period.
&&
$$
URGENT - WINTER WEATHER MESSAGE
National Weather Service Glasgow MT
945 AM MST Thu Dec 4 2025
MTZ024-025-062-051115-
/O.NEW.KGGW.WW.Y.0016.251205T0000Z-251205T1200Z/
Richland-Dawson-Eastern Roosevelt-
Including Richey, Sidney, Fairview, Glendive, and Culbertson
945 AM MST Thu Dec 4 2025
...WINTER WEATHER ADVISORY IN EFFECT FROM 5 PM THIS AFTERNOON TO 5
AM MST FRIDAY...
* WHAT...Snow expected. Total snow accumulations of 1 to 3 inches.
Winds gusting as high as 35 mph.
* WHERE...Dawson, Eastern Roosevelt, and Richland Counties.
* WHEN...From 5 PM this afternoon to 5 AM MST Friday.
* IMPACTS...Plan on slippery road conditions. The hazardous
conditions could impact the Thursday evening commute.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Slow down and use caution while traveling. The latest road
conditions for the state you are calling from can be obtained by
calling 5 1 1.
&&
$$
Stoinski
Winter Storm Watch
URGENT - WINTER WEATHER MESSAGE
National Weather Service Missoula MT
222 AM MST Fri Dec 5 2025
MTZ002-060930-
/O.CON.KMSO.WS.A.0010.251206T0000Z-251207T1500Z/
West Glacier Region-
222 AM MST Fri Dec 5 2025
...WINTER STORM WATCH REMAINS IN EFFECT FROM THIS AFTERNOON THROUGH
SUNDAY MORNING...
* WHAT...Heavy snow possible. There is a chance of moderate to major
winter weather impacts. Total snow accumulations between 2 and 28
inches possible. Winds could gust as high as 40 mph.
* WHERE...Essex, Glacier National Park, Highway 83 Bigfork to Swan
Lake, Bad Rock Canyon, Polebridge, and Marias Pass.
* WHEN...From this afternoon through Sunday morning.
* IMPACTS...For MODERATE winter weather impacts, expect disruptions
to normal activities. Hazardous traveling conditions. Use extra
caution while driving. Closures and disruptions to infrastructure
may occur. For MAJOR winter weather impacts, expect considerable
disruptions to normal activities. Dangerous or impossible
traveling conditions. Avoid travel in the impacted areas if
possible. Widespread closures and disruptions to infrastructure
may occur. The hazardous conditions could impact the Friday
evening commute, especially over higher passes.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Monitor the latest forecasts for updates on this situation.
&&
$$
URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
146 PM MST Thu Dec 4 2025
...SERIES OF WINTER STORMS TO AFFECT THE MOUNTAINS AND PASSES
THROUGH THE SATURDAY...
.The first round of heavy snow is expected to last through early
Friday morning and will primarily focus on the mountains of central
and southwest Montana with 4 to 8 inches possible along the mountain
passes including Bozeman and Kings Hill Pass. A period of lighter
snowfall is expected Friday morning and afternoon. The second and
more widespread round of heavier snowfall is expected to arrive
Friday evening and continue into Saturday evening with an additional
6 to 12 inches possible over the passes and higher amounts above
pass level.
MTZ301-307-051200-
/O.EXT.KTFX.WS.A.0018.251206T0000Z-251207T1500Z/
East Glacier Park Region-Southern Rocky Mountain Front-
Including the following locations: Saint Mary, Marias Pass, Logan
Pass, Kiowa, East Glacier Park, Rogers Pass, and Babb
146 PM MST Thu Dec 4 2025
...WINTER STORM WATCH NOW IN EFFECT FROM FRIDAY AFTERNOON THROUGH
SUNDAY MORNING...
* WHAT...Heavy snow possible. Total snow accumulations between 6 and
12 inches possible. Winds could gust as high as 55 mph.
* WHERE...The Continental Divide along the Rocky Mountain Front.
* WHEN...From Friday afternoon through Sunday morning.
* IMPACTS...Tire chains may be required for some vehicles if
traveling through mountain passes. Strong winds could cause tree
damage.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Monitor the latest forecasts for updates on this situation.
Remember, a Winter Storm Watch means that there is at least a 50%
chance of impactful winter weather conditions during the watch
period.
&&
$$
Glinskas
Hazardous Weather Outlook
Hazardous Weather Outlook
National Weather Service Aberdeen SD
315 AM CST Fri Dec 5 2025
MNZ039-046-SDZ003>011-015-016-033>036-045-048-051-060915-
Traverse-Big Stone-Corson-Campbell-McPherson-Brown-Marshall-Roberts-
Walworth-Edmunds-Day-Dewey-Potter-Stanley-Sully-Hughes-Hyde-Jones-
Lyman-Buffalo-
315 AM CST Fri Dec 5 2025 /215 AM MST Fri Dec 5 2025/
This Hazardous Weather Outlook is for west central Minnesota,
central South Dakota, north central South Dakota and northeast
South Dakota.
.DAY ONE...Today and tonight.
Precipitation lingers through this morning, mainly in the form of
snow. Freezing rain is also a possible precipitation type, and a thin
glaze may accumulate in places, impacting road conditions for the
morning commute.
.DAYS TWO THROUGH SEVEN...Saturday through Thursday.
A low pressure center may bring up to two inches of snowfall across
the region on Saturday. Winds gusting up to 30 miles per hour
may create isolated drifting snow, potentially impacting travel.
.SPOTTER INFORMATION STATEMENT...
Spotter activation is not expected at this time.
$$
Hazardous Weather Outlook
National Weather Service Bismarck ND
128 AM CST Fri Dec 5 2025
NDZ001-009-010-017>021-031>037-040>048-050-051-060730-
Divide-Williams-Mountrail-McKenzie-Dunn-Mercer-Oliver-McLean-
Golden Valley-Billings-Stark-Morton-Burleigh-Kidder-Stutsman-
Slope-Hettinger-Grant-Bowman-Adams-Sioux-Emmons-Logan-La Moure-
McIntosh-Dickey-
128 AM CST Fri Dec 5 2025 /1228 AM MST Fri Dec 5 2025/
This Hazardous Weather Outlook is for portions of northwest North
Dakota, south central North Dakota, southeast North Dakota, and
southwest North Dakota.
.DAY ONE...Tonight
Accumulating snow is expected tonight.
.DAYS TWO THROUGH SEVEN...Friday through Wednesday
Accumulating snow is likely Friday morning, and again Friday night
through Saturday evening. Total snow accumulations around 1 to 4
inches are possible over this time period. Snow covered roads
could cause hazardous travel and impact the Friday morning
commute.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be needed.
$$
Hazardous Weather Outlook
National Weather Service Riverton WY
456 AM MST Thu Dec 4 2025
WYZ001>020-022>030-051600-
Yellowstone National Park-Absaroka Mountains-Cody Foothills-
North Bighorn Basin-Southwest Bighorn Basin-Southeast Bighorn Basin-
Owl Creek and Bridger Mountains-Bighorn Mountains West-
Bighorn Mountains Southeast-Northeast Johnson County-
Southeast Johnson County-Teton and Gros Ventre Mountains-
Jackson Hole-Wind River Mountains West-Wind River Mountains East-
Upper Wind River Basin-Wind River Basin-Lander Foothills-
Green Mountains and Rattlesnake Range-
Natrona County Lower Elevations-Casper Mountain-Star Valley-
Salt River and Wyoming Ranges-Upper Green River Basin Foothills-
Upper Green River Basin-South Lincoln County-
Rock Springs and Green River-Flaming Gorge-East Sweetwater County-
456 AM MST Thu Dec 4 2025
...WINTER WEATHER ADVISORY IN EFFECT FROM 5 PM THIS AFTERNOON TO
2 PM MST SATURDAY...
...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 PM THIS AFTERNOON
TO 2 PM MST SATURDAY...
This Hazardous Weather Outlook is for Western and Central Wyoming.
.DAY ONE...Today and tonight.
Periods of moderate to heavy snow begins late this afternoon and
evening and continues through the overnight hours across the Western
Mountains, Jackson and Star Valleys, and the northern portions of the
western Bighorns. Gusty winds combined with heavy snow could cause
reduced visibilities and hazardous travel.
Wind gusts of 20 to 35 mph are expected across the Wind Corridor,
the Absarokas, including the Cody area, and the upper Wind River
Basin through the afternoon. Isolated gusts of 50 mph are possible in
wind prone locations.
.DAYS TWO THROUGH SEVEN...Friday through Wednesday.
Friday through Saturday...Periods of snow throughout the day Friday,
with moderate to heavy snow beginning Friday evening and continuing
through Saturday morning across the Western Mountains and the
portions of the western Bighorns. Gusty 25 to 40 mph winds combined
with moderate to heavy snow could cause reduced visibilities and
hazardous travel.
Wind gusts of 30 to 40 mph late Friday night across southern
Wyoming, the Absarokas, northern Johnson County, and the Wind River
Basin through the afternoon. Isolated gusts over 55 mph are also
possible.
Sunday through Wednesday...Multiple chances for snow across the
western mountains and widespread breezy to gusty winds.
.SPOTTER INFORMATION STATEMENT...
Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.
$$
