Winter Storm Warning
URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
752 AM MST Fri Dec 5 2025
MTZ317-320-330-060600-
/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: Trident, Targhee Pass,
Neihart, Kings Hill Pass, Raynolds Pass, Monarch, Maudlow, Deep
Creek Pass, Bozeman Pass, Big Sky, West Yellowstone, and Battle
Ridge Pass
752 AM MST Fri Dec 5 2025
...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 2 PM MST SATURDAY...
* WHAT...Heavy snow. Additional snow accumulations between 6 and 12
inches. Isolated higher amounts. 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...Tire chains may be required for some vehicles if
traveling through mountain passes. Widespread blowing snow could
significantly reduce visibility. Gusty winds could bring down tree
branches.
* ADDITIONAL DETAILS...Significant travel impacts to the 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.
&&
$$
URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
752 AM MST Fri Dec 5 2025
MTZ327-060600-
/O.CON.KTFX.WS.W.0019.000000T0000Z-251207T0000Z/
Northwest Beaverhead County-
Including the following locations: Big Hole Pass, Wisdom, Dewey,
Chief Joseph Pass, and Wise River
752 AM MST Fri Dec 5 2025
...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST SATURDAY...
* WHAT...Heavy snow. Additional snow accumulations between 8 and 16
inches. Isolated higher amounts. Winds gusting as high as 50 mph.
* WHERE...Northwest Beaverhead County.
* WHEN...Until 5 PM MST Saturday.
* IMPACTS...Travel could be very difficult and tire chains may be
required for some vehicles. Those in the backcountry should ensure
they are prepared for dangerous conditions. Widespread blowing
snow could significantly reduce visibility. Gusty winds could
bring down tree branches.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. The latest road conditions can
be obtained by calling 5 1 1 or visiting the MDT Road Report website.
&&
$$
URGENT - WINTER WEATHER MESSAGE
National Weather Service Pocatello ID
253 AM MST Fri Dec 5 2025
IDZ058>066-052230-
/O.CON.KPIH.WS.W.0008.000000T0000Z-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 Thatcher, Grace, Victor, Driggs, Soda
Springs, Kilgore, Henry, Emigration Summit, Tetonia, Preston,
Downey, Georgetown, Malad, Lava Hot Springs, Bone, Swan Valley,
McCammon, Island Park, Ashton, St. Charles, Inkom, Wayan, and
Montpelier
253 AM MST Fri Dec 5 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.
&&
$$
URGENT - WINTER WEATHER MESSAGE
National Weather Service Missoula MT
222 AM MST Fri Dec 5 2025
IDZ005-006-060930-
/O.CON.KMSO.WS.W.0012.000000T0000Z-251207T0000Z/
Northern Clearwater Mountains-Southern Clearwater Mountains-
122 AM PST Fri Dec 5 2025
...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 PM PST SATURDAY...
* WHAT...Heavy snow expected. There is a likelihood of major winter
storm impacts. Total snow accumulations 2 to 6 inches in the
valleys and 9 to 18 inches in the higher terrain including Lolo
Pass.
* WHERE...Highway 11 Pierce to Headquarters, Highway 12 Lowell to
Lolo Pass, Pierce, Dixie, Elk River, and Elk City.
* WHEN...Until 4 PM PST Saturday.
* IMPACTS...Travel could be very difficult to impossible. The
hazardous conditions could impact the Friday morning and evening
commutes, especially over higher passes.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. The latest road conditions for
the state you are calling from can be obtained by calling 5 1 1.
&&
$$
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 .
&&
$$
Winter Weather Advisory
URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
752 AM MST Fri Dec 5 2025
MTZ304>306-310-311-314-318-060600-
/O.CON.KTFX.WW.Y.0053.251206T0300Z-251206T1200Z/
Eastern Toole and Liberty-Hill County-Northern Blaine County-
Western and Central Chouteau County-Bears Paw Mountains and
Southern Blaine-Fergus County below 4500ft-Snowy and Judith
Mountains-
Including the following locations: Zurich, Fort Benton, Hogeland,
Fort Belknap, Chinook, Havre, Devon, Rocky Boy, Chester, Galata,
Shelby, Hilger, Carter, Floweree, Joplin, Whitlash, Lothair,
Harlem, and Lewistown
752 AM MST Fri Dec 5 2025
...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 8 PM THIS EVENING
TO 5 AM MST SATURDAY...
* WHAT...Snow expected. Total snow accumulations 1 to 3 inches at
lower elevations and up to 8 inches in the mountains.
* WHERE...Portions of central and north central Montana.
* WHEN...From 8 PM this evening to 5 AM MST Saturday.
* IMPACTS...Plan on slippery road conditions.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Slow down and use caution while traveling. The latest road
conditions can be obtained by calling 5 1 1 or visiting the MDT Road
Report website.
&&
$$
URGENT - WINTER WEATHER MESSAGE
National Weather Service Glasgow MT
310 AM MST Fri Dec 5 2025
MTZ016>018-020>027-059>061-052300-
/O.NEW.KGGW.WW.Y.0017.251206T0300Z-251206T1900Z/
Central and Southeast Phillips-Central and Southern Valley-
Daniels-Western Roosevelt-Petroleum-Garfield-McCone-Richland-
Dawson-Prairie-Wibaux-Northern Phillips-Southwest Phillips-
Northern Valley-
Including Fairview, Wolf Point, Hinsdale, Whitewater, Opheim,
Frazer, Terry, Circle, Glasgow, Wibaux, Saco, Malta, Glendive,
Scobey, Richey, Zortman, Poplar, Winnett, Sidney, Jordan, and
Fort Peck
310 AM MST Fri Dec 5 2025
...WINTER WEATHER ADVISORY IN EFFECT FROM 8 PM THIS EVENING TO NOON
MST SATURDAY...
* WHAT...Snow expected. Total snow accumulations between 2 and 4
inches.
* WHERE...Most of northeast Montana.
* WHEN...From 8 PM this evening to noon MST Saturday.
* IMPACTS...Plan on slippery road conditions.
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.
&&
$$
Forrester
URGENT - WINTER WEATHER MESSAGE
National Weather Service Pocatello ID
253 AM MST Fri Dec 5 2025
IDZ053-052230-
/O.CON.KPIH.WW.Y.0019.000000T0000Z-251206T1200Z/
Upper Snake River Plain-
Including the cities of St. Anthony, Idaho Falls, and Rexburg
253 AM MST Fri Dec 5 2025
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST
SATURDAY...
* WHAT...Snow expected. Total snow accumulations between 2 and 6
inches with totals closer to the higher end of that range from
Rexburg northward. Very gusty winds developing late Friday into
Friday night.
* WHERE...Upper Snake River Plain.
* WHEN...Until 5 AM MST Saturday.
* IMPACTS...Travel could be very difficult. The hazardous conditions
could impact the Friday commute.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Slow down and use caution while traveling. Call 5 1 1 or visit
511.idaho.gov for the latest road conditions.
&&
$$
URGENT - WINTER WEATHER MESSAGE
National Weather Service 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 .
&&
$$
Winter Storm Watch
URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
752 AM MST Fri Dec 5 2025
MTZ301-307-060600-
/O.CON.KTFX.WS.A.0018.251206T0000Z-251207T1500Z/
East Glacier Park Region-Southern Rocky Mountain Front-
Including the following locations: Marias Pass, Rogers Pass,
Babb, Saint Mary, Kiowa, East Glacier Park, and Logan Pass
752 AM MST Fri Dec 5 2025
...WINTER STORM WATCH REMAINS IN EFFECT FROM 5 PM MST THIS AFTERNOON
THROUGH SUNDAY MORNING...
* WHAT...Heavy snow possible. Total snow accumulations 8 to 15
inches possible. Winds could gust as high as 60 mph.
* WHERE...The Continental Divide along the Rocky Mountain Front.
* WHEN...From 5 PM MST this afternoon through Sunday morning.
* IMPACTS...Travel could be very difficult and tire chains may be
required for some vehicles. Those in the backcountry should ensure
they are prepared for dangerous conditions. Widespread blowing
snow could significantly reduce visibility. Strong winds could
cause tree damage.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Monitor the latest forecasts for updates on this situation.
Remember, a Winter Storm Watch means that there is at least a 50%
chance of impactful winter weather conditions during the watch
period.
&&
$$
IG
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.
&&
$$
Hazardous Weather Outlook
Hazardous Weather Outlook
National Weather Service Bismarck ND
928 AM CST Fri Dec 5 2025
NDZ009-010-017>021-031>037-040>048-050-051-061530-
Williams-Mountrail-McKenzie-Dunn-Mercer-Oliver-McLean-
Golden Valley-Billings-Stark-Morton-Burleigh-Kidder-Stutsman-
Slope-Hettinger-Grant-Bowman-Adams-Sioux-Emmons-Logan-La Moure-
McIntosh-Dickey-
928 AM CST Fri Dec 5 2025 /828 AM MST Fri Dec 5 2025/
This Hazardous Weather Outlook is for portions of northwest North
Dakota, south central North Dakota, southeast North Dakota, and
southwest North Dakota.
.DAY ONE...Today and Tonight
Areas of freezing drizzle and light snow are expected this
morning.
Accumulating snow is likely to begin late tonight in western North
Dakota.
.DAYS TWO THROUGH SEVEN...Saturday through Thursday
Accumulating snow is likely on Saturday, with medium to high
chances for at least 1 inch of snow, and low chances for up to 4
inches.
Strong winds are possible on Tuesday.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be needed.
$$
Hazardous Weather Outlook
National Weather Service Rapid City SD
257 AM MST Fri Dec 5 2025
SDZ024-WYZ057-061400-
Northern Black Hills-Wyoming Black Hills-
257 AM MST Fri Dec 5 2025
This Hazardous Weather Outlook is for portions of the Black Hills
of South Dakota...and the Black Hills of Wyoming.
.DAY ONE...Today and Tonight
Light snow is expected today. Most of the accumulating snow will
fall this morning. Totals up to 2 inches of snow are expected.
.DAYS TWO THROUGH SEVEN...Saturday through Thursday
Periodic bouts of light snow are expected through the weekend.
The best chance for snow accumulation will be over northwestern
South Dakota and the northern Black Hills, with a total of 1-4
inches.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be needed today.
&&
Stay tuned to NOAA weather radio for further updates...or check
our web site at weather.gov/rapidcity
$$
Hazardous Weather Outlook...CORRECTED
National Weather Service Riverton WY
254 AM MST Fri Dec 5 2025
WYZ001>020-022>030-061400-
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-
254 AM MST Fri Dec 5 2025
...WINTER STORM WARNING REMAINS IN EFFECT FOR THE TETON AND GROS
VENTRE MOUNTAINS AND THE SALT RIVER AND WYOMING RANGES UNTIL 2 PM
MST SATURDAY...
...WINTER WEATHER ADVISORY REMAINS IN EFFECT FOR YELLOWSTONE NATIONAL
PARK AND THE ABSAROKA MOUNTAINS UNTIL 2 PM MST SATURDAY...
...WINTER WEATHER ADVISORY REMAINS IN EFFECT FOR THE BIGHORN MOUNTAINS
WEST UNTIL 2 PM MST SATURDAY...
...WINTER WEATHER ADVISORY REMAINS IN EFFECT FOR THE UPPER GREEN RIVER
BASIN FOOTHILLS AND WIND RIVER MOUNTAINS WEST UNTIL 2 PM MST SATURDAY...
...WINTER WEATHER ADVISORY REMAINS IN EFFECT FOR JACKSON HOLE AND
STAR VALLEY UNTIL 2 PM MST SATURDAY...
This Hazardous Weather Outlook is for Western and Central Wyoming.
.DAY ONE...Today and tonight.
Moderate to heavy snow this afternoon through the overnight hours
across the Western Mountains, Jackson and Star Valleys, the Upper
Green River Basin, and the northern portions of the western Bighorns.
Gusty winds combined with heavy snow could cause reduced
visibilities and hazardous travel.
Widespread breezy to gusty winds across much of the area this
afternoon, with gusts up to 30 mph across the Wind Corridor, the
Absarokas, and eastern Wind River Mountains.
Wind gusts of 40 to 50 mph are expected after sunset across the
western mountains, the Wind Corridor, and the Wind River Basin.
.DAYS TWO THROUGH SEVEN...Saturday through Thursday.
Saturday...Light snow across western Wyoming and the western
Bighorns. Gusty across the area. Wind gusts of 40 to 50 mph across
the western mountains, northern Johnson County, the Wind River Basin,
and southern Wyoming. Gusts of 60 mph are possible in wind prone
locations, especially Sweetwater County.
Sunday through Thursday...Multiple chances for snow across western
Wyoming and widespread breezy to gusty winds.
.SPOTTER INFORMATION STATEMENT...
Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.
$$
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.
$$
