Winter Storm Warning
URGENT - WINTER WEATHER MESSAGE
National Weather Service Riverton WY
213 PM MST Tue Dec 9 2025
WYZ001-002-101400-
/O.CON.KRIW.WS.W.0013.000000T0000Z-251211T0000Z/
Yellowstone National Park-Absaroka Mountains-
Including the cities of Lake, Old Faithful, and Mammoth
213 PM MST Tue Dec 9 2025
...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST WEDNESDAY...
* WHAT...Heavy snow. Additional snow accumulations between 8 and 15
inches, with the highest amounts in the western Absarokas and
southwestern Yellowstone Park. Northern Yellowstone Park will see
4 to 8 inches of snow with much lower amounts, less than 2 inches
at Mammoth. Winds gusting as high as 60 to 70 mph across the
ridgetops.
* WHERE...Absaroka Mountains and Yellowstone National Park.
* WHEN...Until 5 PM MST Wednesday.
* IMPACTS...Travel could be very difficult across Yellowstone Park
and along Chief Joseph Highway. Significant blowing and drifting
of snow is expected. Backcountry travel is not advised.
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 .
&&
$$
URGENT - WINTER WEATHER MESSAGE
National Weather Service Billings MT
132 AM MST Tue Dec 9 2025
MTZ067-100845-
/O.CON.KBYZ.WS.W.0018.000000T0000Z-251211T0000Z/
Absaroka/Beartooth Mountains-
Including the locations of Cooke City
132 AM MST Tue Dec 9 2025
...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST WEDNESDAY...
* WHAT...Periods of heavy snow. Additional snow accumulations of 10
to 18 inches, greatest on west aspects. Winds gusting as high as 75
mph.
* WHERE...Absaroka/Beartooth Mountains.
* WHEN...Until 5 PM MST Wednesday.
* IMPACTS...Recreation in the high country will be impacted by heavy
accumulating snow and significant blowing snow. Whiteout conditions
are possible over the highest elevations. Avalanche danger will
increase.
* ADDITIONAL DETAILS...Additional periods of moderate to heavy snow
possible Thursday and Friday.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Outdoor activities in the mountains will be impacted by harsh winter
conditions, so be prepared.
&&
$$
High Wind Warning
URGENT - WEATHER MESSAGE
National Weather Service Great Falls MT
256 PM MST Tue Dec 9 2025
MTZ302-308-101500-
/O.UPG.KTFX.HW.A.0029.251210T1500Z-251211T0000Z/
/O.NEW.KTFX.HW.W.0030.251210T1500Z-251211T0300Z/
Northern High Plains-Southern High Plains-
Including the following locations: Bynum, Heart Butte, Choteau,
Dupuyer, Browning, and Pendroy
256 PM MST Tue Dec 9 2025
...HIGH WIND WARNING IN EFFECT FROM 8 AM TO 8 PM MST WEDNESDAY...
* WHAT...West winds 40 to 50 mph with gusts up to 90 mph expected.
* WHERE...The foothills and plains adjacent to the Rocky Mountain
Front.
* WHEN...From 8 AM to 8 PM MST Wednesday.
* IMPACTS...High winds may move loose debris, damage property and
cause power outages. Travel could be difficult, especially for
high profile vehicles.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
People are urged to secure loose objects that could be blown around
or damaged by the wind.
Remember, a High Wind Warning means that there is at least an 80%
chance of 40 mph sustained winds or 58 mph wind gusts occurring
during the warning period.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Great Falls MT
256 PM MST Tue Dec 9 2025
MTZ303-101500-
/O.UPG.KTFX.HW.A.0029.251210T1500Z-251211T0000Z/
/O.NEW.KTFX.HW.W.0030.251210T1500Z-251211T0300Z/
Eastern Glacier, Western Toole, and Central Pondera-
Including the following locations: Ethridge, Cut Bank, and Santa
Rita
256 PM MST Tue Dec 9 2025
...HIGH WIND WARNING IN EFFECT FROM 8 AM TO 8 PM MST WEDNESDAY...
* WHAT...West winds 30 to 40 mph with gusts up to 70 mph expected.
* WHERE...Eastern Glacier, Western Toole, and Central Pondera
Counties.
* WHEN...From 8 AM to 8 PM MST Wednesday.
* IMPACTS...High winds may move loose debris, damage property and
cause power outages. Travel could be difficult, especially for
high profile vehicles.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
People are urged to secure loose objects that could be blown around
or damaged by the wind.
Remember, a High Wind Warning means that there is at least an 80%
chance of 40 mph sustained winds or 58 mph wind gusts occurring
during the warning period.
&&
$$
Wilson
URGENT - WEATHER MESSAGE
National Weather Service Glasgow MT
242 AM MST Tue Dec 9 2025
MTZ016>027-059>062-100000-
/O.CON.KGGW.HW.W.0011.000000T0000Z-251210T0000Z/
Central and Southeast Phillips-Central and Southern Valley-
Daniels-Sheridan-Western Roosevelt-Petroleum-Garfield-McCone-
Richland-Dawson-Prairie-Wibaux-Northern Phillips-Southwest
Phillips-Northern Valley-Eastern Roosevelt-
Including Plentywood, Terry, Fairview, Hinsdale, Winnett,
Glendive, Culbertson, Malta, Poplar, Fort Peck, Saco, Whitewater,
Opheim, Sidney, Wolf Point, Jordan, Scobey, Wibaux, Glasgow,
Richey, Medicine Lake, Circle, Zortman, and Frazer
242 AM MST Tue Dec 9 2025
...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON...
* WHAT...West winds 30 to 40 mph with gusts up to 60 mph.
* WHERE...All of northeast Montana.
* WHEN...Until 5 PM MST this afternoon.
* IMPACTS...High winds may move loose debris, damage property, and
cause power bumps. Travel could be difficult, especially for high
profile vehicles.
* ADDITIONAL DETAILS...Freezing rain this morning will create icy
roads in some areas.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Remain in the lower levels of your home during the windstorm, and
avoid windows. Watch for falling debris and tree limbs. Use caution
if you must drive.
&&
$$
Forrester
Avalanche Warning
MTZ001-101100-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
BACKCOUNTRY AVALANCHE WARNING
Idaho Panhandle Avalanche Center Sandpoint ID
Relayed by National Weather Service Missoula MT
1153 AM MST Tue Dec 9 2025
The following message is transmitted at the request of Idaho Panhandle
Avalanche Center Sandpoint ID.
...AVALANCHE WARNING BY THE IDAHO PANHANDLE AVALANCHE CENTER REMAINS IN EFFECT...
The Idaho Panhandle Avalanche Center in Sandpoint has issued a BACKCOUNTRY
AVALANCHE WARNING for the following areas:
NWS Missoula MT -
MTZ001 (MTZ001)
NWS Spokane WA -
ID 017 (Bonner County)...ID 021 (Boundary County)
* WHAT...An Avalanche Warning remains in effect until Wednesday 4
AM. Very dangerous avalanche conditions developed overnight and
will last though Tuesday as heavy, wet snowfall transitioned to
heavy rain along with strong winds.
* WHERE...The Selkirk Mountains, West and East Cabinet Mountains,
and the Silver Valley-Bitterroot Mountains.
* WHEN...In effect from Tue 6:00 PST to Wed 4:00 PST.
* IMPACTS... A potent atmospheric river characterized by near-
historic moisture is introducing a "firehose" of moisture into
North Idaho and Northwestern Montana. The rain line rose to
around 7,000 to 7,500 feet overnight Monday and will saturate
recent snowfall and overload pre-existing weak snow layers. It
will be very likely for backcountry travelers to trigger
avalanches and natural avalanches are likely. Avalanches can
break wide across terrain features and run long distances to
lower elevations.
* PRECAUTIONARY / PREPAREDNESS ACTIONS...Travel in avalanche
terrain is not recommended during this period.
Consult http://www.idahopanhandleavalanche.org/ or www.avalanche.org for
more detailed information.
Similar avalanche danger may exist at locations outside the coverage area
of this or any avalanche center.
$$
MTZ067-101200-
Urgent - Immediate Broadcast Requested
Avalanche Warning
Gallatin National Forest Avalanche Center
Relayed by National Weather Service Billings MT
557 AM MST Tue Dec 9 2025
The following message is transmitted at the request of the
Gallatin National Forest Avalanche Center.
The Gallatin NF Avalanche Center in Bozeman has issued a
BACKCOUNTRY AVALANCHE WARNING for the following areas:
NWS Billings MT - MTZ067 (MTZ067)
* WHAT...The avalanche danger is HIGH and avalanches will happen
today.
* WHERE...The mountains near Cooke City
* WHEN...In effect from Tue 04:39 MST to Wed 04:39 MST.
* IMPACTS...Avalanches have been happening for the last 4 days.
More snow and especially high winds will cause many more
avalanches today.
* PRECAUTIONARY / PREPAREDNESS ACTIONS...Very dangerous avalanche
conditions. Stay far away from any steep slope. Avalanches may
be triggered from flat terrain below steeper slopes.
Consult http://www.mtavalanche.com or www.avalanche.org for more
detailed information.
Similar avalanche danger may exist at locations outside the
coverage area of this or any avalanche center.
$$
MTZ001-002-101200-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Backcountry Avalanche Warning
Flathead Avalanche Center Hungry Horse MT
Relayed by National Weather Service Missoula MT
534 AM MST Tue Dec 9 2025
The following message is transmitted at the request of Flathead Avalanche
Center Hungry Horse MT.
...AVALANCHE WARNING ISSUED BY THE FLATHEAD AVALANCHE CENTER...
06:00 MST Tue Dec 09 2025
The Flathead Avalanche Center in Hungry Horse has issued a BACKCOUNTRY
AVALANCHE WARNING for the following areas:
NWS Missoula MT -
MTZ001 (MTZ001)...MTZ002 (MTZ002)
* WHAT...Heavy rain, heavy snowfall, strong winds, and above-freezing
temperatures have created very dangerous avalanche conditions.
* WHERE...The Whitefish, Swan, and Flathead Ranges, as well as the Apgar
Mountains, Lake McDonald Valley, and Marias Pass areas of Glacier National
Park.
* WHEN...In effect from Tue 06:00 MST to Wed 05:00 MST.
* IMPACTS...Large to very large natural avalanches are likely on mid- and
upper-elevation slopes; they may involve wet snow or dense slabs of new and
wind-drifted snow. These slides can run into low elevation terrain and
valley bottoms, including terrain where it doesn`t appear to be enough snow
cover for avalanche hazards.
* PRECAUTIONARY / PREPAREDNESS ACTIONS...Very dangerous avalanche
conditions. Travel in and below avalanche terrain is not recommended.
Avalanches may run long distances and can run into mature forests, valley
floors, or flat terrain.
Consult http://www.flatheadavalanche.org/ or www.avalanche.org for more
detailed information.
Similar avalanche danger may exist at locations outside the coverage area of
this or any avalanche center.
$$
MTC029-053-100115-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Backcountry Avalanche Warning
Relayed by National Weather Service Missoula MT
601 PM MST Mon Dec 8 2025
The following message is transmitted at the request of Idaho Panhandle
Avalanche Center Sandpoint ID.
...AVALANCHE WARNING ISSUED BY THE IDAHO PANHANDLE AVALANCHE CENTER...
16:00 PST Mon Dec 08 2025 The Idaho Panhandle Avalanche Center in Sandpoint
has issued a BACKCOUNTRY AVALANCHE WARNING for the following areas:
NWS Missoula MT -
MTZ001 (MTZ001)
NWS Spokane WA -
ID 017 (Bonner County)...ID 021 (Boundary County)
* WHAT...An Avalanche Warning is in effect from Monday 4 PM to Tuesday 4
PM. Very dangerous avalanche conditions will develop overnight and last
though Tuesday as heavy, wet snowfall transitions to heavy rain along with
strong winds. You can very easily trigger avalanches large enough to bury
or kill you, and some will release spontaneously. Avoid travel in avalanche
terrain during this period.
* WHERE...The Selkirk Mountains, West and East Cabinet Mountains, and the
Silver Valley-Bitterroot Mountains above 4,000 feet.
* WHEN...In effect from Mon 16:00 PST to Tue 16:00 PST.
* IMPACTS...A potent atmospheric river characterized by near-historic
moisture will introduce a firehose of moisture into North Idaho and
Northwestern Montana. The rain line will rise to around 7,000 to 7,500 feet
overnight Monday and will saturate recent snowfall and overload pre-
existing weak snow layers. It will be very likely for backcountry travelers
to trigger avalanches and natural avalanches are likely. Avalanches can
break wide across terrain features and run long distances to lower
elevations.
* PRECAUTIONARY / PREPAREDNESS ACTIONS...Travel in avalanche terrain is not
recommended during this period.
Consult http://www.idahopanhandleavalanche.org/ or www.avalanche.org for
more detailed information.
Similar avalanche danger may exist at locations outside the coverage area
of this or any avalanche center.
$$
Winter Weather Advisory
URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
248 PM MST Tue Dec 9 2025
MTZ301-307-101215-
/O.NEW.KTFX.WS.A.0019.251211T2100Z-251213T1200Z/
/O.CON.KTFX.WW.Y.0054.251210T0700Z-251210T1800Z/
East Glacier Park Region-Southern Rocky Mountain Front-
Including the following locations: East Glacier Park, Kiowa,
Logan Pass, Rogers Pass, Saint Mary, Babb, and Marias Pass
248 PM MST Tue Dec 9 2025
...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT
TO 11 AM MST WEDNESDAY...
...WINTER STORM WATCH IN EFFECT FROM THURSDAY AFTERNOON THROUGH LATE
FRIDAY NIGHT...
* WHAT...For the Winter Weather Advisory, snow expected. Total snow
accumulations between 2 to 4 inches on Marias Pass, and up to 7
inches at ridge tops. For the Winter Storm Watch, heavy snow
possible. Total snow accumulations between 7 and 12 inches
possible along Marias Pass, with over a foot of snow at the higher
peaks.
* WHERE...The Continental Divide along the Rocky Mountain Front.
* WHEN...For the Winter Weather Advisory, from midnight tonight to
11 AM MST Wednesday. For the Winter Storm Watch, from Thursday
afternoon through late Friday night.
* 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. Roads, and especially
bridges and overpasses, will likely become slick and hazardous.
* ADDITIONAL DETAILS...Temperatures rapidly dropping behind the
arctic front Thursday afternoon will cause a flash freeze on
roadways and bridges. The heaviest period of snow will be on
Friday.
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.
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
241 PM MST Tue Dec 9 2025
MTZ016-017-021>023-025-026-059-060-101200-
/O.NEW.KGGW.WS.A.0004.251212T0300Z-251213T1800Z/
/O.CON.KGGW.WW.Y.0019.251210T1100Z-251212T0300Z/
Central and Southeast Phillips-Central and Southern Valley-
Petroleum-Garfield-McCone-Dawson-Prairie-Northern Phillips-
Southwest Phillips-
Including Saco, Glendive, Zortman, Fort Peck, Terry, Winnett,
Glasgow, Frazer, Circle, Richey, Malta, Hinsdale, Whitewater, and
Jordan
241 PM MST Tue Dec 9 2025
...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 4 AM WEDNESDAY TO
8 PM MST THURSDAY...
...WINTER STORM WATCH IN EFFECT FROM THURSDAY EVENING THROUGH
SATURDAY MORNING...
* WHAT...Later this week, for the Winter Storm Watch, heavy snow
possible. Total snow accumulations between 4 and 14 inches
possible.
* WHERE...Less toward the northeast corner of Montana. More toward
central Montana.
* WHEN...Later this week, for the Winter Storm Watch, from Thursday
evening through Saturday morning.
* IMPACTS...Travel could be very difficult to impossible. The
hazardous conditions could impact multiple days` commutes. Roads,
and especially bridges and overpasses, will likely become snow
covered, slick and hazardous.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Monitor the latest forecasts for updates on this situation.
Persons should consider delaying all travel. Motorists should use
extreme caution if travel is absolutely necessary.
Persons should consider delaying all travel. If travel is absolutely
necessary, drive with extreme caution. Consider taking a winter
storm kit along with you, including such items as tire chains,
booster cables, flashlight, shovel, blankets and extra clothing.
Also take water, a first aid kit, and anything else that would help
you survive in case you become stranded.
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.
Be prepared for slippery roads. Slow down and use caution while
driving. If you are going outside, watch your first few steps taken
on stairs, sidewalks, and driveways. These surfaces could be icy and
slippery, increasing your risk of a fall and injury.
&&
$$
URGENT - WINTER WEATHER MESSAGE
National Weather Service Riverton WY
213 PM MST Tue Dec 9 2025
WYZ008-101400-
/O.CON.KRIW.WW.Y.0036.000000T0000Z-251211T0000Z/
Bighorn Mountains West-
213 PM MST Tue Dec 9 2025
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST
WEDNESDAY...
* WHAT...Snow. Additional snow accumulations up to 8 to 12 inches
across higher peaks in the northern part of the Range, including
along Granite Pass. Around 4 to 10 inches across Powder River
Pass. 1 to 3 inches of snow possible across the southern part of
the Range. Winds gusting as high as 50 to 60 mph.
* WHERE...Bighorn Mountains West.
* WHEN...Until 5 PM MST Wednesday.
* IMPACTS...Travel could be very difficult across Powder River and
Granite Passes. Significant blowing and drifting of snow is
possible. Backcountry travel is not advised.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Slow down and use caution while traveling.
For graphical depictions of the snowfall forecast, including the
official NWS forecast, high end amounts, and low end amounts, visit
https://weather.gov/riw/winter .
For winter road conditions from the Wyoming Department of
Transportation, visit https://wyoroad.info .
&&
$$
URGENT - WINTER WEATHER MESSAGE
National Weather Service Missoula MT
1242 AM MST Tue Dec 9 2025
MTZ002-043-101800-
/O.NEW.KMSO.WW.Y.0047.251210T0700Z-251210T1800Z/
West Glacier Region-Potomac/Seeley Lake Region-
1242 AM MST Tue Dec 9 2025
...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 11 AM
MST WEDNESDAY...
* WHAT...Snow expected. There is a likelihood of moderate winter
weather impacts. Total snow accumulations of 2 to 5 inches.
* WHERE...Marias Pass, Highway 83 Bigfork to Swan Lake, Highway 83
Seeley Lake to Condon, Glacier National Park, Highway 200 Bonner
to Greenough, Polebridge, Essex, I-90 East Missoula to Bearmouth,
and Bad Rock Canyon.
* WHEN...From midnight tonight to 11 AM MST Wednesday.
* IMPACTS...For MODERATE winter weather impacts, expect disruptions
to normal activities. Difficult traveling conditions. Use extra
caution while driving. The difficult conditions could impact the
Wednesday morning commute, especially over higher passes.
* ADDITIONAL DETAILS...Snowfall rates of 1 inch per hour will be
possible between 4am and 7am
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.
&&
$$
Winter Storm Watch
URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
248 PM MST Tue Dec 9 2025
MTZ301-307-101215-
/O.NEW.KTFX.WS.A.0019.251211T2100Z-251213T1200Z/
/O.CON.KTFX.WW.Y.0054.251210T0700Z-251210T1800Z/
East Glacier Park Region-Southern Rocky Mountain Front-
Including the following locations: East Glacier Park, Kiowa,
Logan Pass, Rogers Pass, Saint Mary, Babb, and Marias Pass
248 PM MST Tue Dec 9 2025
...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT
TO 11 AM MST WEDNESDAY...
...WINTER STORM WATCH IN EFFECT FROM THURSDAY AFTERNOON THROUGH LATE
FRIDAY NIGHT...
* WHAT...For the Winter Weather Advisory, snow expected. Total snow
accumulations between 2 to 4 inches on Marias Pass, and up to 7
inches at ridge tops. For the Winter Storm Watch, heavy snow
possible. Total snow accumulations between 7 and 12 inches
possible along Marias Pass, with over a foot of snow at the higher
peaks.
* WHERE...The Continental Divide along the Rocky Mountain Front.
* WHEN...For the Winter Weather Advisory, from midnight tonight to
11 AM MST Wednesday. For the Winter Storm Watch, from Thursday
afternoon through late Friday night.
* 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. Roads, and especially
bridges and overpasses, will likely become slick and hazardous.
* ADDITIONAL DETAILS...Temperatures rapidly dropping behind the
arctic front Thursday afternoon will cause a flash freeze on
roadways and bridges. The heaviest period of snow will be on
Friday.
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.
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 Great Falls MT
248 PM MST Tue Dec 9 2025
MTZ302-308>310-312>314-317-318-101215-
/O.NEW.KTFX.WS.A.0019.251211T2100Z-251213T1200Z/
Northern High Plains-Southern High Plains-Eastern Pondera and
Eastern Teton-Western and Central Chouteau County-Cascade County
below 5000ft-Judith Basin County and Judith Gap-Fergus County
below 4500ft-Little Belt and Highwood Mountains-Snowy and Judith
Mountains-
Including the following locations: Kings Hill Pass, Carter,
Hilger, Dupuyer, Browning, Bynum, Heart Butte, Brady, Choteau,
Moccasin, Hobson, Monarch, Pendroy, Raynesford, Benchland,
Conrad, Great Falls, Lewistown, Neihart, Floweree, Geyser,
Ledger, Stanford, Windham, and Fort Benton
248 PM MST Tue Dec 9 2025
...WINTER STORM WATCH IN EFFECT FROM THURSDAY AFTERNOON THROUGH LATE
FRIDAY NIGHT...
* WHAT...Heavy snow possible. Total snow accumulations between 5 and
12 inches possible across lower elevations, with locally higher
amounts at the higher mountain peaks. Winds could gust as high as
35 mph.
* WHERE...Portions of central and north central Montana.
* WHEN...From Thursday afternoon through late Friday night.
* IMPACTS...Travel could be very difficult and tire chains may be
required for some vehicles over mountain passes. Those in the
backcountry should ensure they are prepared for dangerous
conditions. The hazardous conditions could impact the Thursday
evening and Friday morning commutes.
* ADDITIONAL DETAILS...Temperatures rapidly dropping behind the
arctic front Thursday afternoon will cause a flash freeze on
roadways and bridges. The heaviest period of snow will be on
Friday.
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.
&&
$$
Wilson
URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
248 PM MST Tue Dec 9 2025
MTZ303>306-311-101215-
/O.NEW.KTFX.WS.A.0019.251211T1800Z-251213T1200Z/
Eastern Glacier, Western Toole, and Central Pondera-Eastern Toole
and Liberty-Hill County-Northern Blaine County-Bears Paw
Mountains and Southern Blaine-
Including the following locations: Zurich, Rocky Boy, Shelby,
Havre, Santa Rita, Chester, Joplin, Ethridge, Cut Bank, Lothair,
Chinook, Galata, Devon, Whitlash, Hogeland, Fort Belknap, and
Harlem
248 PM MST Tue Dec 9 2025
...WINTER STORM WATCH IN EFFECT FROM THURSDAY MORNING THROUGH LATE
FRIDAY NIGHT...
* WHAT...Heavy snow possible. Total snow accumulations between 5 and
12 inches possible across lower elevations, with locally higher
amounts in the Bears Paws.
* WHERE...Eastern Glacier, Western Toole, and Central Pondera
Counties, Eastern Toole and Liberty Counties, Hill County,
Northern Blaine County, and Bears Paw Mountains and Southern
Blaine.
* WHEN...From Thursday morning through late Friday night.
* IMPACTS...Travel could be very difficult.
* ADDITIONAL DETAILS...Temperatures rapidly dropping behind the
arctic front Thursday afternoon will cause a flash freeze on
roadways and bridges. The heaviest period of snow will be on
Friday.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Monitor the latest forecasts for updates on this situation.
Remember, a Winter Storm Watch means that there is at least a 50%
chance of impactful winter weather conditions during the watch
period.
&&
$$
URGENT - WINTER WEATHER MESSAGE
National Weather Service Glasgow MT
241 PM MST Tue Dec 9 2025
MTZ016-017-021>023-025-026-059-060-101200-
/O.NEW.KGGW.WS.A.0004.251212T0300Z-251213T1800Z/
/O.CON.KGGW.WW.Y.0019.251210T1100Z-251212T0300Z/
Central and Southeast Phillips-Central and Southern Valley-
Petroleum-Garfield-McCone-Dawson-Prairie-Northern Phillips-
Southwest Phillips-
Including Saco, Glendive, Zortman, Fort Peck, Terry, Winnett,
Glasgow, Frazer, Circle, Richey, Malta, Hinsdale, Whitewater, and
Jordan
241 PM MST Tue Dec 9 2025
...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 4 AM WEDNESDAY TO
8 PM MST THURSDAY...
...WINTER STORM WATCH IN EFFECT FROM THURSDAY EVENING THROUGH
SATURDAY MORNING...
* WHAT...Later this week, for the Winter Storm Watch, heavy snow
possible. Total snow accumulations between 4 and 14 inches
possible.
* WHERE...Less toward the northeast corner of Montana. More toward
central Montana.
* WHEN...Later this week, for the Winter Storm Watch, from Thursday
evening through Saturday morning.
* IMPACTS...Travel could be very difficult to impossible. The
hazardous conditions could impact multiple days` commutes. Roads,
and especially bridges and overpasses, will likely become snow
covered, slick and hazardous.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Monitor the latest forecasts for updates on this situation.
Persons should consider delaying all travel. Motorists should use
extreme caution if travel is absolutely necessary.
Persons should consider delaying all travel. If travel is absolutely
necessary, drive with extreme caution. Consider taking a winter
storm kit along with you, including such items as tire chains,
booster cables, flashlight, shovel, blankets and extra clothing.
Also take water, a first aid kit, and anything else that would help
you survive in case you become stranded.
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.
Be prepared for slippery roads. Slow down and use caution while
driving. If you are going outside, watch your first few steps taken
on stairs, sidewalks, and driveways. These surfaces could be icy and
slippery, increasing your risk of a fall and injury.
&&
$$
Flood Watch
Flood Watch
National Weather Service Missoula MT
1253 PM MST Mon Dec 8 2025
.Near-record precipitation is possible this week as two Atmospheric
Rivers will move through the region. The first one arrives today and
continues through Tuesday, followed by a second, stronger one
Tuesday night through Thursday. Between 4 and 10 inches of moderate
to heavy rain are expected in the mountains. For some locations,
near record rainfall amounts are possible. The rain, falling on the
current snowpack, combined with mild nighttime temperatures will
increase snowmelt. Flows in rivers may increase quickly and reach
critical levels.
IDC035-049-092115-
/O.EXT.KMSO.FA.A.0009.251209T0000Z-251212T0000Z/
/00000.0.RS.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Clearwater-Idaho-
1253 PM MST Mon Dec 8 2025 /1153 AM PST Mon Dec 8 2025/
...FLOOD WATCH NOW IN EFFECT FROM 5 PM MST /4 PM PST/ THIS AFTERNOON
THROUGH THURSDAY AFTERNOON...
* WHAT...Flooding caused by rain and snowmelt continues to be
possible.
* WHERE...Portions of central and panhandle Idaho, including the
following counties, in central Idaho, Idaho. In panhandle Idaho,
Clearwater.
* WHEN...From 5 PM MST /4 PM PST/ this afternoon through Thursday
afternoon.
* IMPACTS...Creeks and streams may rise out of their banks. Flooding
may occur in poor drainage and urban areas. Storm drains and
ditches may become clogged with debris. People, structures, and
roads located below steep slopes, in canyons, and near the mouths
of canyons may be at risk from landslides.
* ADDITIONAL DETAILS...
- A prolonged atmospheric river is expected to bring periods of
heavy rain to Idaho and Clearwater Counties, Monday night
through Thursday. Rising snow levels will lead to a rain on
snow event for elevations below 7,000 feet Monday night into
Tuesday morning. The precipitation rates will briefly
decrease Tuesday afternoon, before a second surge of moisture
arrives Tuesday night into Thursday morning with snow levels
rising to near 8,000 feet. By Thursday, significant
precipitation totals are forecast, with 2 to 5 inches in the
valleys and 5 to 10 inches in the mountains, with locally
higher totals over mountain crests. Landslides in areas of
steep terrain and minor flooding in urban and poor drainage
areas is possible.
- https://www.weather.gov/mso/hydrology
PRECAUTIONARY/PREPAREDNESS ACTIONS...
You should monitor later forecasts and be alert for possible Flood
Warnings. Those living in areas prone to flooding should be prepared
to take action should flooding develop. Monitor basements for water
intrusion. You may want to preemptively shovel snow away from your
home.
&&
$$
Flood Watch
National Weather Service Missoula MT
1253 PM MST Mon Dec 8 2025
.Near-record precipitation is possible this week as two Atmospheric
Rivers will move through the region. The first one arrives today and
continues through Tuesday, followed by a second, stronger one
Tuesday night through Thursday. Between 4 and 10 inches of moderate
to heavy rain are expected in the mountains. For some locations,
near record rainfall amounts are possible. The rain, falling on the
current snowpack, combined with mild nighttime temperatures will
increase snowmelt. Flows in rivers may increase quickly and reach
critical levels.
MTC029-047-053-089-092115-
/O.EXB.KMSO.FA.A.0009.251209T0000Z-251212T0000Z/
/00000.0.RS.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Flathead-Lake-Lincoln-Sanders-
1253 PM MST Mon Dec 8 2025
...FLOOD WATCH IN EFFECT FROM 5 PM MST THIS AFTERNOON THROUGH
THURSDAY AFTERNOON...
* WHAT...Flooding caused by rain and snowmelt continues to be
possible.
* WHERE...A portion of northwest Montana, including the following
counties, Flathead, Lake, Lincoln and Sanders.
* WHEN...From 5 PM MST this afternoon through Thursday afternoon.
* IMPACTS...Creeks and streams may rise out of their banks. Flooding
may occur in poor drainage and urban areas. Storm drains and
ditches may become clogged with debris. Rockfall is possible.
* ADDITIONAL DETAILS...
- A prolonged atmospheric river event will bring periods of
moderate to heavy rainfall to the region. Snow levels will
rise to 6,000 to 7,000 feet during the first moisture plume
on Tuesday. Snow levels will fall temporarily to 3,000 to
5,000 feet Tuesday night before rising again to 6,000 to
9,000 feet Wednesday and Thursday. Between 4 and 10 inches of
total precipitation will fall this week in the mountains and
upslope regions and between 1 and 4 inches of total rainfall
is expected in the valleys. Landslides in areas of steep
terrain and minor flooding in urban and poor drainage areas
are possible.
- https://www.weather.gov/mso/hydrology
PRECAUTIONARY/PREPAREDNESS ACTIONS...
You should monitor later forecasts and be alert for possible Flood
Warnings. Those living in areas prone to flooding should be prepared
to take action should flooding develop. Monitor basements for water
intrusion. You may want to preemptively shovel snow away from your
home.
&&
$$
Special Weather Statement
Special Weather Statement
National Weather Service Billings MT
235 PM MST Tue Dec 9 2025
MTZ138-WYZ198-199-092330-
Northeast Bighorn Mountains WY-Sheridan Foothills WY-Southern Big
Horn MT-
235 PM MST Tue Dec 9 2025
...SNOW SHOWERS WILL IMPACT SOUTH CENTRAL BIG HORN AND CENTRAL
SHERIDAN COUNTIES UNTIL 430 PM MST...
At 235 PM MST, Doppler radar was tracking snow showers 14 miles south
of Lodge Grass, or 30 miles northwest of Sheridan, moving south at 25
mph.
Reductions to visibility below 1 mile are possible. Roads may become
slick due to slushy accumulations along Interstate 90 from Lodge
Grass to Story.
Locations impacted include...
Sheridan, Ranchester, Dayton, Big Horn, Parkman, Wyola, Banner and
Crow Indian Reservation.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Conditions can deteriorate rapidly in winter weather situations. Be
prepared for snow or ice covered roads. Slow down and allow extra
time when traveling.
&&
LAT...LON 4500 10752 4525 10752 4527 10715 4456 10659
4456 10684 4463 10694 4461 10703 4466 10710
4468 10709 4469 10720 4474 10720 4484 10735
4491 10741 4492 10738 4493 10739 4495 10749
4498 10747 4495 10752 4499 10751
TIME...MOT...LOC 2135Z 355DEG 19KT 4511 10736
$$
Matos
Hazardous Weather Outlook
Hazardous Weather Outlook
National Weather Service Riverton WY
248 AM MST Tue Dec 9 2025
WYZ001>020-022>030-101400-
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-
248 AM MST Tue Dec 9 2025
...WINTER STORM WARNINGS REMAIN IN EFFECT FROM 5 PM THIS AFTERNOON
TO 5 PM MST WEDNESDAY...
...HIGH WIND WARNING IN EFFECT THROUGH WEDNESDAY EVENING...
This Hazardous Weather Outlook is for Western and Central Wyoming.
.DAY ONE...Today and tonight.
Moderate to heavy snowfall continues for western mountains. Please
see Winter Weather Products and forecasts for details.
Strong to high wind developing from Kemmerer through Rock Springs
and into Natrona County. Please see High Wind Warnings for
details.
.DAYS TWO THROUGH SEVEN...Wednesday through Monday.
Wednesday and Thursday...Snow likely in the western and northern
mountains. Strong to high wind continuing in southern Wyoming.
.SPOTTER INFORMATION STATEMENT...
Spotter activation is not expected at this time.
$$
Hydrologic Outlook
Hydrologic Outlook
MTC039-063-081-102100-
Hydrologic Outlook
National Weather Service Missoula MT
122 PM MST Mon Dec 8 2025
...NEAR RECORD HEAVY PRECIPITATION TO BRING SMALL STREAM RISES, RISK
FOR ROCK AND LANDSLIDES, AND MINOR FLOODING THIS WEEK...
A prolonged atmospheric river is expected to bring periods of heavy
rain for western Montana Monday night through Thursday. Rising snow
levels will lead to a rain-on-snow event for elevations below 7,000
feet Monday night into Tuesday morning. Precipitation rates will
briefly decrease Tuesday afternoon before a second surge of moisture
arrives Tuesday night into Thursday. During the second surge, snow
levels will be lower initially, ranging from 3,500 to 5,000 feet
with some slushy snow accumulations across northwest Montana
valleys, but will then rise to 6,000 to 8,000 feet Wednesday into
Thursday. By Thursday, significant precipitation totals are
forecast, with 1 to 4 inches in the valleys and 5 to 8 inches in the
mountains, with locally higher totals over mountain crests.
Landslides in areas of steep terrain and minor flooding in urban and
poor-drainage areas are possible. Storm drains and ditches may
become clogged with debris. You may want to preemptively shovel snow
away from your homes. Watch basements for moisture intrusion.
$$
