Winter Storm Warning
URGENT - WINTER WEATHER MESSAGE
National Weather Service Billings MT
155 PM MST Thu Dec 11 2025
MTZ029-042-063-173-228-122100-
/O.CON.KBYZ.WS.W.0019.251211T2100Z-251213T0600Z/
Musselshell-Golden Valley-Judith Gap-Northeastern Yellowstone-
Southern Wheatland-
Including the locations of Custer, Harlowton, Pompeys Pillar,
Shawmut, Melstone, Musselshell, Judith Gap, Twodot, Roundup, Ryegate,
and Lavina
155 PM MST Thu Dec 11 2025
...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 PM MST FRIDAY...
* WHAT...Heavy snow expected. Total snow accumulations between 6 and
10 inches. Winds gusting as high as 45 mph through Judith Gap this
evening into tonight.
* WHERE...Golden Valley, Judith Gap, Musselshell, Southern Wheatland,
and Northeastern Yellowstone.
* WHEN...Until 11 PM MST Friday.
* IMPACTS...Travel will be very difficult with slick and snow covered
roads, and areas of poor visibility. Blowing and drifting snow will
impact travel on US-191 through Judith Gap this evening into
tonight.
* ADDITIONAL DETAILS...Rapidly falling temperatures combined with
rain changing to snow may result in a flash freeze on roadways this
evening. Travel may become treacherous during this time.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If you must travel, keep an extra flashlight, food, and water in your
vehicle in case of an emergency. For the latest road conditions, call
5 1 1.
&&
$$
URGENT - WINTER WEATHER MESSAGE
National Weather Service Billings MT
155 PM MST Thu Dec 11 2025
MTZ068-122100-
/O.CON.KBYZ.WS.W.0019.251211T2100Z-251213T0300Z/
Crazy Mountains-
155 PM MST Thu Dec 11 2025
...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 8 PM MST FRIDAY...
* WHAT...Periods of moderate to heavy snow expected. Total snow
accumulations between 10 and 18 inches on west aspects.
* WHERE...Crazy Mountains.
* WHEN...Until 8 PM MST Friday.
* IMPACTS...Recreation in the high country will be impacted by heavy
accumulating snow and blowing snow.
* ADDITIONAL DETAILS...Avalanche danger may increase.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Be prepared for wintry conditions if you have plans in the
backcountry.
&&
$$
URGENT - WINTER WEATHER MESSAGE
National Weather Service Billings MT
155 PM MST Thu Dec 11 2025
MTZ034-057-058-138-141-172-235-122100-
/O.CON.KBYZ.WS.W.0019.251212T0000Z-251213T0300Z/
Northern Stillwater-Northern Big Horn-Southern Rosebud-Southern
Big Horn-Northern Sweet Grass-Melville Foothills-Southwestern
Yellowstone-
Including the locations of Hardin, Absarokee, Lodge Grass, Park City,
Busby, Huntley, Big Timber, Crow Agency, Melville, Pryor, Broadview,
Birney, Columbus, Lame Deer, Ashland, Reed Point, Laurel, Wyola,
Billings, and Rapelje
155 PM MST Thu Dec 11 2025
...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 PM THIS AFTERNOON TO
8 PM MST FRIDAY...
* WHAT...Heavy snow expected. Total snow accumulations between 4 and
9 inches.
* WHERE...Portions of south central and southeast Montana.
* WHEN...From 5 PM this afternoon to 8 PM MST Friday.
* IMPACTS...Travel will be very difficult with slick and snow covered
roads, and areas of poor visibility.
* ADDITIONAL DETAILS...Rapidly falling temperatures combined with
rain changing to snow may result in a flash freeze on roadways this
evening. Travel may become treacherous during this time.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If you must travel, keep an extra flashlight, food, and water in your
vehicle in case of an emergency. For the latest road conditions, call
5 1 1.
&&
$$
URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
1259 PM MST Thu Dec 11 2025
MTZ301-121100-
/O.CAN.KTFX.WW.Y.0055.000000T0000Z-251211T2200Z/
/O.UPG.KTFX.WS.A.0019.251212T0700Z-251213T1200Z/
/O.NEW.KTFX.WS.W.0020.251212T0700Z-251213T0100Z/
East Glacier Park Region-
Including the following locations: Babb, Saint Mary, East Glacier
Park, Marias Pass, Kiowa, and Logan Pass
1259 PM MST Thu Dec 11 2025
...WINTER STORM WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 6 PM MST
FRIDAY...
* WHAT...Heavy snow expected. Total snow accumulations between 6 and
12 inches.
* WHERE...East Glacier Park Region Zone.
* WHEN...From midnight tonight to 6 PM MST Friday.
* IMPACTS...Tire chains may be required for some vehicles if
traveling through mountain passes.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. The latest road conditions can
be obtained by calling 5 1 1 or visiting the MDT Road Report website.
&&
$$
URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
1259 PM MST Thu Dec 11 2025
MTZ304>306-121100-
/O.CAN.KTFX.WW.Y.0055.000000T0000Z-251211T2200Z/
/O.UPG.KTFX.WS.A.0019.251212T0700Z-251213T1200Z/
/O.NEW.KTFX.WS.W.0020.251212T1100Z-251213T1200Z/
Eastern Toole and Liberty-Hill County-Northern Blaine County-
Including the following locations: Devon, Havre, Zurich,
Hogeland, Joplin, Chester, Harlem, Fort Belknap, Shelby, Galata,
Chinook, Whitlash, and Lothair
1259 PM MST Thu Dec 11 2025
...WINTER STORM WARNING IN EFFECT FROM 4 AM FRIDAY TO 5 AM MST
SATURDAY...
* WHAT...Heavy snow expected. Total snow accumulations between 5 and
8 inches.
* WHERE...Eastern Toole and Liberty Counties, Hill County, and
Northern Blaine County.
* WHEN...From 4 AM Friday to 5 AM MST Saturday.
* IMPACTS...Travel could be very difficult.
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.
&&
$$
URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
1259 PM MST Thu Dec 11 2025
MTZ307-317-318-121100-
/O.UPG.KTFX.WS.A.0019.251212T0700Z-251213T1200Z/
/O.NEW.KTFX.WS.W.0020.251212T0700Z-251213T0100Z/
/O.EXT.KTFX.WW.Y.0055.000000T0000Z-251212T0700Z/
Southern Rocky Mountain Front-Little Belt and Highwood Mountains-
Snowy and Judith Mountains-
Including the following locations: Monarch, Rogers Pass, Kings
Hill Pass, and Neihart
1259 PM MST Thu Dec 11 2025
...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL MIDNIGHT MST
TONIGHT...
...WINTER STORM WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 6 PM MST
FRIDAY...
* WHAT...For the Winter Weather Advisory, snow. Additional snow
accumulations between 2 and 7 inches. Winds gusting as high as 40
mph. For the Winter Storm Warning, heavy snow expected. Total snow
accumulations between 6 and 12 inches, with localized amounts
approaching 20 inches in the Island Ranges. Winds gusting as high
as 35 mph.
* WHERE...The Highwood, Little Belt, Judith, and Snowy Mountains,
and Southern Rocky Mountain Front.
* WHEN...For the Winter Weather Advisory, until midnight MST
tonight. For the Winter Storm Warning, from midnight tonight to 6
PM MST Friday.
* IMPACTS...Tire chains may be required for some vehicles if
traveling through mountain passes. Roads, and especially bridges
and overpasses, will likely become slick and hazardous.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. The latest road conditions can
be obtained by calling 5 1 1 or visiting the MDT Road Report website.
&&
$$
URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
1259 PM MST Thu Dec 11 2025
MTZ310-311-121100-
/O.UPG.KTFX.WS.A.0019.251212T0700Z-251213T1200Z/
/O.NEW.KTFX.WS.W.0020.251212T1100Z-251213T1200Z/
/O.EXT.KTFX.WW.Y.0055.000000T0000Z-251212T0100Z/
Western and Central Chouteau County-Bears Paw Mountains and
Southern Blaine-
Including the following locations: Rocky Boy, Floweree, Carter,
and Fort Benton
1259 PM MST Thu Dec 11 2025
...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 6 PM MST THIS
EVENING...
...WINTER STORM WARNING IN EFFECT FROM 4 AM FRIDAY TO 5 AM MST
SATURDAY...
* WHAT...For the Winter Weather Advisory, snow. Additional snow
accumulations up to one inch. Winds gusting as high as 40 mph. For
the Winter Storm Warning, heavy snow expected. Total snow
accumulations between 6 and 12 inches.
* WHERE...Bears Paw Mountains and Southern Blaine and Western and
Central Chouteau County.
* WHEN...For the Winter Weather Advisory, until 6 PM MST this
evening. For the Winter Storm Warning, from 4 AM Friday to 5 AM
MST Saturday.
* IMPACTS...Travel could be very difficult. Roads, and especially
bridges and overpasses, will likely become slick and hazardous.
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.
&&
$$
URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
1259 PM MST Thu Dec 11 2025
MTZ313-314-121100-
/O.UPG.KTFX.WS.A.0019.251212T0700Z-251213T1200Z/
/O.NEW.KTFX.WS.W.0020.251212T0700Z-251213T1200Z/
/O.EXT.KTFX.WW.Y.0055.000000T0000Z-251212T0700Z/
Judith Basin County and Judith Gap-Fergus County below 4500ft-
Including the following locations: Geyser, Benchland, Hilger,
Stanford, Hobson, Lewistown, Moccasin, Windham, and Raynesford
1259 PM MST Thu Dec 11 2025
...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL MIDNIGHT MST
TONIGHT...
...WINTER STORM WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 5 AM MST
SATURDAY...
* WHAT...For the Winter Weather Advisory, snow. Additional snow
accumulations up to 3 inches. Winds gusting as high as 40 mph. For
the Winter Storm Warning, heavy snow expected. Total snow
accumulations between 8 and 12 inches.
* WHERE...Fergus County below 4500ft and Judith Basin County and
Judith Gap.
* WHEN...For the Winter Weather Advisory, until midnight MST
tonight. For the Winter Storm Warning, from midnight tonight to 5
AM MST Saturday.
* IMPACTS...Travel could be very difficult. Roads, and especially
bridges and overpasses, will likely become slick and hazardous.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. The latest road conditions can
be obtained by calling 5 1 1 or visiting the MDT Road Report website.
&&
$$
Flood Warning
Flood Warning
National Weather Service Spokane WA
301 PM PST Thu Dec 11 2025
...The National Weather Service in Spokane WA has issued a Flood
Warning for the following rivers in Idaho...
St Joe River at Calder affecting Shoshone County.
For the St. Joe River...including Calder...Minor flooding is
forecast.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Motorists should not attempt to drive around barricades or drive
cars through flooded areas.
Turn around, don`t drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Additional information is available at www.weather.gov.
The next statement will be issued late tonight at 315 AM PST.
&&
IDC079-121115-
/O.NEW.KOTX.FL.W.0010.251211T2301Z-251213T0600Z/
/CLDI1.1.RS.251211T2215Z.251212T0600Z.251212T1039Z.NO/
301 PM PST Thu Dec 11 2025
...FLOOD WARNING IN EFFECT FROM THIS AFTERNOON TO LATE TOMORROW
EVENING...
* WHAT...Minor flooding is forecast.
* WHERE...St Joe River at Calder.
* WHEN...From this afternoon to late tomorrow evening.
* IMPACTS...At 13.0 feet, Bear Creek will begin to back up from the
St Joe River and may start to spill into the town of Calder,
flooding the low spots in yards, roads and parking lots.
* ADDITIONAL DETAILS...
- At 2:30 PM PST Thursday the stage was 13.0 feet.
- Bankfull stage is 12.0 feet.
- Forecast...The river will rise to 13.1 feet late this
evening. It will then fall below flood stage late tonight to
9.6 feet late Monday morning.
- Flood stage is 13.0 feet.
- http://www.weather.gov/safety/flood
&&
LAT...LON 4739 11632 4735 11604 4717 11604 4721 11635
$$
AS
Flood Warning
National Weather Service Spokane WA
210 PM PST Thu Dec 11 2025
IDC017-122000-
/O.NEW.KOTX.FA.W.0004.251211T2210Z-251212T2000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Bonner ID-
210 PM PST Thu Dec 11 2025
...FLOOD WARNING IN EFFECT UNTIL NOON PST FRIDAY...
* WHAT...Urban area and small stream flooding caused by excessive
rainfall is expected to continue.
* WHERE...A portion of North Idaho, including the following county,
Bonner, the city, Clark Fork, and Lightning Creek and Spring Creek.
* WHEN...Until noon PST Friday.
* IMPACTS...Flooding of rivers, creeks, streams, and other low-lying
and flood-prone locations is imminent or occurring. Numerous roads
remain closed due to flooding. Streams continue to rise due to
excess runoff from earlier rainfall. Low-water crossings are
inundated with water and may not be passable.
* ADDITIONAL DETAILS...
- At 203 PM PST, Doppler radar indicated heavy rain. Flooding
has already been observed along Lightning Creek and Spring
Creek. Between 2 and 5 inches of rain have fallen over the
last 24 hours.
- Additional rainfall amounts of 0.25 to 0.5 inches are
possible in the warned area through noon tomorrow.
- Some locations that will experience flooding include...
Clark Fork. Lightning Creek, Spring Creek.
- http://www.weather.gov/safety/flood
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don`t drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Move to higher ground now. Act quickly to protect your life.
&&
LAT...LON 4813 11614 4812 11622 4825 11623 4826 11609
$$
AS
Flood Warning
National Weather Service Missoula MT
1215 PM MST Thu Dec 11 2025
MTC053-120000-
/O.EXT.KMSO.FA.W.0001.000000T0000Z-251212T0000Z/
/00000.0.RS.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Lincoln MT-
1215 PM MST Thu Dec 11 2025
...FLOOD WARNING NOW IN EFFECT UNTIL 5 PM MST THIS AFTERNOON...
* WHAT...Flooding caused by excessive rainfall and high mountain
snow melt is occurring.
* WHERE...A portion of northwest Montana, including the following
county, Lincoln.
Highway 2 through Troy and Libby.
* WHEN...Until 500 PM MST.
* IMPACTS...Flooding of rivers, creeks, streams, and other low-lying
and flood-prone locations is occurring.
* ADDITIONAL DETAILS...
- At 1214 PM MST, emergency management reported heavy rain and
snowmelt in the warned area. Flooding is already occurring.
- Some roads are closed in and around Libby and Troy. Homes
have been effected due to flooding along Iron Creek and in
Libby.
- Some locations that will experience flooding include...
Libby, Troy, Yaak, Yakt.
- Highway 2 through Troy and Libby.
- https://www.weather.gov/mso/hydrology
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don`t drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 4870 11602 4842 11539 4822 11551 4844 11603
$$
Flood Statement
National Weather Service Missoula MT
1151 AM MST Thu Dec 11 2025
...The Flood Warning continues for the following rivers in Montana...
Fisher River Near Libby affecting Lincoln County.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Motorists should not attempt to drive around barricades or drive
cars through flooded areas.
Turn around, don`t drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Additional information is available at www.weather.gov.
The next statement will be issued late Friday night at midnight MST.
&&
MTC053-130700-
/O.CON.KMSO.FL.W.0002.000000T0000Z-000000T0000Z/
/FISM8.N.SM.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1151 AM MST Thu Dec 11 2025
...FLOOD WARNING FOR SNOWMELT REMAINS IN EFFECT UNTIL FURTHER
NOTICE...
* WHAT...Minor flooding is ongoing.
* WHERE...Fisher River near Near Libby.
* WHEN...Until further notice.
* IMPACTS...At 7.5 feet, Flooding affects low lying areas adjacent
to the river. Flooding also causes minor washouts along Fisher
River Road.
At 9.0 feet, Flooding affects low lying homes and roads adjacent
to the river. Flooding affects Fisher River Road and several flood
prone areas along the road.
* ADDITIONAL DETAILS...
- At 10:45 AM MST Thursday the stage was 7.2 feet.
- Bankfull stage is 7.5 feet.
- Forecast...The river will rise to flood stage late tonight.
It will then fall to 5.4 feet late Monday evening. It will
rise to 6.2 feet late Wednesday evening. It will then fall
again and remain below flood stage.
- Flood stage is 7.5 feet.
- Flood History...This crest compares to a previous crest of
6.7 feet on 06/16/2022.
- https://www.weather.gov/mso/hydrology
&&
LAT...LON 4834 11537 4840 11524 4825 11518 4817 11518
4811 11525 4806 11533 4813 11541 4819 11537
4827 11536
$$
Flood Statement
National Weather Service Spokane WA
906 AM PST Thu Dec 11 2025
...The Flood Warning is extended for the following rivers in Idaho...
Washington...
Coeur d Alene River at Cataldo affecting Shoshone and Kootenai
Counties.
Stehekin River at Stehekin affecting Chelan County.
...The Flood Warning is cancelled for the following rivers in
Idaho...
St Joe River at Calder affecting Shoshone County.
For the Coeur d`Alene River...including Enaville, Cataldo, Lake
Coeur d Alene...Minor flooding is forecast.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don`t drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.
Additional information is available at www.weather.gov.
The next statement will be issued this morning at 1015 AM PST.
&&
IDC055-079-120515-
/O.EXT.KOTX.FL.W.0008.000000T0000Z-251213T1050Z/
/CTLI1.1.RS.251211T0922Z.251212T0000Z.251212T2250Z.NO/
906 AM PST Thu Dec 11 2025
...FLOOD WARNING NOW IN EFFECT UNTIL EARLY SATURDAY MORNING...
* WHAT...Minor flooding is occurring and minor flooding is forecast.
* WHERE...Coeur d Alene River at Cataldo.
* WHEN...Until early Saturday morning.
* IMPACTS...At 43.0 feet, Minor flooding of farmland from Cataldo
downstream to Rose Lake and Harrison is likely. The campground at
Cataldo will also begin to flood. Portions of Dudley Road, west of
Latour Creek, will likely be underwater and impassable. If there
is significant water already in the floodplain, these impacts may
occur at lower stages. Old Coeur d`Alene River Road on the North
Fork of the Coeur d`Alene River near Enaville may begin to flood
north of the Bumblebee Bridge.
At 44.0 feet, Homes near the river may experience some flooding of
basements. Water will begin to cover CCC Road near the Mennonite
Church. Some water will be over the section of Latour Creek Road
immediately south of Interstate 90, near the campground. Due to
the high water table some homes behind the Cataldo levee will be
surrounded by water.
* ADDITIONAL DETAILS...
- At 8:15 AM PST Thursday the stage was 44.3 feet.
- Bankfull stage is 42.0 feet.
- Recent Activity...The maximum river stage in the 24 hours
ending at 8:15 AM PST Thursday was 44.3 feet.
- Forecast...The river will crest at around 44.3 feet this
afternoon. It will fall below flood stage tomorrow afternoon.
The river will see additional rises around the middle of next
week.
- Flood stage is 43.0 feet.
- Flood History...This crest compares to a previous crest of
44.3 feet on 03/13/2007.
- http://www.weather.gov/safety/flood
&&
LAT...LON 4752 11620 4742 11673 4750 11680 4764 11626
$$
Flood Warning
National Weather Service Missoula MT
809 AM MST Thu Dec 11 2025
MTC089-112345-
/O.NEW.KMSO.FA.W.0002.251211T1509Z-251211T2345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Sanders MT-
809 AM MST Thu Dec 11 2025
...FLOOD WARNING IN EFFECT UNTIL 445 PM MST THIS AFTERNOON...
* WHAT...Small stream flooding caused by excessive rainfall is
expected or occurring.
* WHERE...A portion of northwest Montana, including the following
county, Sanders.
Highway 56 near Bull Lake.
* WHEN...Until 445 PM MST Thursday.
* IMPACTS...Flooding of rivers, creeks, streams, and other low-lying
and flood-prone locations is imminent or occurring.
* ADDITIONAL DETAILS...
- At 806 AM MST, emergency management reported heavy rain in
the warned area. Flooding is already occurring.
- Highway 56 near Bull Lake has been closed due to water on the
road, per reports from the Montana Department of
Transportation.
- Highway 56 near Bull Lake.
- https://www.weather.gov/mso/hydrology
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don`t drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 4809 11589 4817 11588 4821 11586 4821 11585
4822 11585 4822 11584 4821 11584 4821 11583
4822 11583 4822 11582 4808 11582
$$
Winter Weather Advisory
URGENT - WINTER WEATHER MESSAGE
National Weather Service Billings MT
155 PM MST Thu Dec 11 2025
MTZ040-056-065-066-139-121600-
/O.EXB.KBYZ.WW.Y.0041.251212T0100Z-251212T1600Z/
Northern Park-Red Lodge Foothills-Livingston Area-Beartooth
Foothills-Southeastern Carbon-
Including the locations of Roberts, Springdale, Livingston, Warren,
Fishtail, Bridger, Roscoe, Red Lodge, Belfry, Clyde Park, Wilsall,
Nye, and McLeod
155 PM MST Thu Dec 11 2025
...WINTER WEATHER ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO 9 AM
MST FRIDAY...
* WHAT...Snow expected. Total snow accumulations of 1 to 3 inches.
* WHERE...Beartooth Foothills, Livingston Area, Northern Park, Red
Lodge Foothills, and Southeastern Carbon.
* WHEN...From 6 PM this evening to 9 AM MST Friday.
* IMPACTS...Travel will be difficult with slick and snow covered
roads, and areas of poor visibility.
* ADDITIONAL DETAILS...Rapidly falling temperatures combined with
rain changing to snow may result in a flash freeze on roadways this
evening. Travel may become treacherous during this time.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Slow down and use caution while traveling. For the latest road
conditions, call 5 1 1.
&&
$$
URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
1259 PM MST Thu Dec 11 2025
MTZ302-303-309-121100-
/O.CAN.KTFX.WW.Y.0055.000000T0000Z-251211T2200Z/
/O.UPG.KTFX.WS.A.0019.251212T0700Z-251213T1200Z/
/O.NEW.KTFX.WW.Y.0056.251212T1100Z-251213T1200Z/
Northern High Plains-Eastern Glacier, Western Toole, and Central
Pondera-Eastern Pondera and Eastern Teton-
Including the following locations: Cut Bank, Brady, Santa Rita,
Conrad, Browning, Dupuyer, Ethridge, Heart Butte, and Ledger
1259 PM MST Thu Dec 11 2025
...WINTER WEATHER ADVISORY IN EFFECT FROM 4 AM FRIDAY TO 5 AM MST
SATURDAY...
* WHAT...Snow expected. Total snow accumulations between 2 and 5
inches, with isolated amounts approaching 7 inches along and east
of the Interstate 15 corridor.
* WHERE...The Interstate 15 Corridor north of Power, and Northern
High Plains.
* WHEN...From 4 AM Friday to 5 AM MST Saturday.
* IMPACTS...Travel could be very difficult.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Slow down and use caution while traveling. The latest road
conditions can be obtained by calling 5 1 1 or visiting the MDT Road
Report website.
&&
$$
URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
1259 PM MST Thu Dec 11 2025
MTZ307-317-318-121100-
/O.UPG.KTFX.WS.A.0019.251212T0700Z-251213T1200Z/
/O.NEW.KTFX.WS.W.0020.251212T0700Z-251213T0100Z/
/O.EXT.KTFX.WW.Y.0055.000000T0000Z-251212T0700Z/
Southern Rocky Mountain Front-Little Belt and Highwood Mountains-
Snowy and Judith Mountains-
Including the following locations: Monarch, Rogers Pass, Kings
Hill Pass, and Neihart
1259 PM MST Thu Dec 11 2025
...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL MIDNIGHT MST
TONIGHT...
...WINTER STORM WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 6 PM MST
FRIDAY...
* WHAT...For the Winter Weather Advisory, snow. Additional snow
accumulations between 2 and 7 inches. Winds gusting as high as 40
mph. For the Winter Storm Warning, heavy snow expected. Total snow
accumulations between 6 and 12 inches, with localized amounts
approaching 20 inches in the Island Ranges. Winds gusting as high
as 35 mph.
* WHERE...The Highwood, Little Belt, Judith, and Snowy Mountains,
and Southern Rocky Mountain Front.
* WHEN...For the Winter Weather Advisory, until midnight MST
tonight. For the Winter Storm Warning, from midnight tonight to 6
PM MST Friday.
* IMPACTS...Tire chains may be required for some vehicles if
traveling through mountain passes. Roads, and especially bridges
and overpasses, will likely become slick and hazardous.
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.
&&
$$
URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
1259 PM MST Thu Dec 11 2025
MTZ308-312-121100-
/O.CAN.KTFX.WS.A.0019.251212T0700Z-251213T1200Z/
/O.EXT.KTFX.WW.Y.0055.000000T0000Z-251213T0100Z/
Southern High Plains-Cascade County below 5000ft-
Including the following locations: Bynum, Pendroy, Great Falls,
and Choteau
1259 PM MST Thu Dec 11 2025
...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 6 PM MST FRIDAY...
...WINTER STORM WATCH IS CANCELLED...
* WHAT...Snow. Additional snow accumulations between 3 and 5 inches,
with isolated amounts approaching 7 inches along and east of the
Interstate 15 corridor.
* WHERE...Cascade County below 5000ft and Southern High Plains.
* WHEN...Until 6 PM MST Friday.
* IMPACTS...Travel could be very difficult. The hazardous conditions
could impact the Thursday evening and Friday morning commutes.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Slow down and use caution while traveling. The latest road
conditions can be obtained by calling 5 1 1 or visiting the MDT Road
Report website.
&&
$$
URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
1259 PM MST Thu Dec 11 2025
MTZ310-311-121100-
/O.UPG.KTFX.WS.A.0019.251212T0700Z-251213T1200Z/
/O.NEW.KTFX.WS.W.0020.251212T1100Z-251213T1200Z/
/O.EXT.KTFX.WW.Y.0055.000000T0000Z-251212T0100Z/
Western and Central Chouteau County-Bears Paw Mountains and
Southern Blaine-
Including the following locations: Rocky Boy, Floweree, Carter,
and Fort Benton
1259 PM MST Thu Dec 11 2025
...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 6 PM MST THIS
EVENING...
...WINTER STORM WARNING IN EFFECT FROM 4 AM FRIDAY TO 5 AM MST
SATURDAY...
* WHAT...For the Winter Weather Advisory, snow. Additional snow
accumulations up to one inch. Winds gusting as high as 40 mph. For
the Winter Storm Warning, heavy snow expected. Total snow
accumulations between 6 and 12 inches.
* WHERE...Bears Paw Mountains and Southern Blaine and Western and
Central Chouteau County.
* WHEN...For the Winter Weather Advisory, until 6 PM MST this
evening. For the Winter Storm Warning, from 4 AM Friday to 5 AM
MST Saturday.
* IMPACTS...Travel could be very difficult. Roads, and especially
bridges and overpasses, will likely become slick and hazardous.
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.
&&
$$
URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
1259 PM MST Thu Dec 11 2025
MTZ313-314-121100-
/O.UPG.KTFX.WS.A.0019.251212T0700Z-251213T1200Z/
/O.NEW.KTFX.WS.W.0020.251212T0700Z-251213T1200Z/
/O.EXT.KTFX.WW.Y.0055.000000T0000Z-251212T0700Z/
Judith Basin County and Judith Gap-Fergus County below 4500ft-
Including the following locations: Geyser, Benchland, Hilger,
Stanford, Hobson, Lewistown, Moccasin, Windham, and Raynesford
1259 PM MST Thu Dec 11 2025
...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL MIDNIGHT MST
TONIGHT...
...WINTER STORM WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 5 AM MST
SATURDAY...
* WHAT...For the Winter Weather Advisory, snow. Additional snow
accumulations up to 3 inches. Winds gusting as high as 40 mph. For
the Winter Storm Warning, heavy snow expected. Total snow
accumulations between 8 and 12 inches.
* WHERE...Fergus County below 4500ft and Judith Basin County and
Judith Gap.
* WHEN...For the Winter Weather Advisory, until midnight MST
tonight. For the Winter Storm Warning, from midnight tonight to 5
AM MST Saturday.
* IMPACTS...Travel could be very difficult. Roads, and especially
bridges and overpasses, will likely become slick and hazardous.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. The latest road conditions can
be obtained by calling 5 1 1 or visiting the MDT Road Report website.
&&
$$
URGENT - WINTER WEATHER MESSAGE
National Weather Service Great Falls MT
1259 PM MST Thu Dec 11 2025
MTZ315-316-320-321-121100-
/O.EXT.KTFX.WW.Y.0055.000000T0000Z-251213T0100Z/
Upper Blackfoot and MacDonald Pass-Gates of the Mountains-Big
Belt, Bridger and Castle Mountains-Meagher County Valleys-
Including the following locations: Ringling, Lincoln, Wolf Creek,
Marysville, White Sulphur Springs, Trident, Martinsdale,
MacDonald Pass, Deep Creek Pass, Craig, Canyon Creek,
Checkerboard, Maudlow, Bozeman Pass, Flesher Pass, and Battle
Ridge Pass
1259 PM MST Thu Dec 11 2025
...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 6 PM MST FRIDAY...
* WHAT...Snow. Additional snow accumulations of 4 to 9 inches, with
isolated amounts approaching 11 inches over the highest peaks.
Winds gusting as high as 40 mph.
* WHERE...Big Belt, Bridger and Castle Mountains, Gates of the
Mountains, Meagher County Valleys, and Upper Blackfoot and
MacDonald Pass.
* WHEN...Until 6 PM MST Friday.
* IMPACTS...Tire chains may be required for some vehicles if
traveling through mountain passes.
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.
&&
$$
Moldan
URGENT - WINTER WEATHER MESSAGE
National Weather Service Missoula MT
1240 PM MST Thu Dec 11 2025
MTZ002-131200-
/O.NEW.KMSO.WW.Y.0048.251212T0700Z-251213T1200Z/
West Glacier Region-
1240 PM MST Thu Dec 11 2025
...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 5 AM
MST SATURDAY...
* WHAT...Mixed precipitation expected. There is a likelihood of
minor to moderate winter weather impacts. Total snow accumulations
up to 4 inches generally above 4000 feet, locally up to 8 inches
on Marias Pass. Ice accumulations around a light glaze.
* WHERE...Bad Rock Canyon, Glacier National Park, Marias Pass,
Essex, Highway 83 Bigfork to Swan Lake, and Polebridge.
* WHEN...From midnight tonight to 5 AM MST Saturday.
* IMPACTS...Plan on slippery road conditions. The hazardous
conditions could impact the Friday morning and evening commutes,
especially over higher passes.
* ADDITIONAL DETAILS...Watch for brief but intense snow showers
quickly dropping visiibility. Also, light freezing rain may impact
US-2 from Essex to West Glacier.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Slow down and use caution while traveling. The latest road
conditions for the state you are calling from can be obtained by
calling 5 1 1.
&&
$$
Cold Weather Advisory
URGENT - WEATHER MESSAGE
National Weather Service Great Falls MT
101 PM MST Thu Dec 11 2025
MTZ303>306-121115-
/O.NEW.KTFX.CW.Y.0019.251212T0100Z-251212T1700Z/
Eastern Glacier, Western Toole, and Central Pondera-Eastern Toole
and Liberty-Hill County-Northern Blaine County-
Including the following locations: Devon, Havre, Zurich,
Hogeland, Cut Bank, Chester, Joplin, Harlem, Santa Rita, Fort
Belknap, Shelby, Galata, Ethridge, Chinook, Whitlash, and Lothair
101 PM MST Thu Dec 11 2025
...COLD WEATHER ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO 10 AM
MST FRIDAY...
* WHAT...Very cold wind chills as low as 28 below expected.
* WHERE...Eastern Glacier, Western Toole, and Central Pondera
Counties, Eastern Toole and Liberty Counties, Hill County, and
Northern Blaine County.
* WHEN...From 6 PM this evening to 10 AM MST Friday.
* IMPACTS...The dangerously cold wind chills as low as 30 below zero
could cause frostbite on exposed skin in as little as 30 minutes.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Use caution while traveling outside. Wear appropriate clothing, a
hat, and gloves.
&&
$$
Moldan
Flood Advisory
Flood Advisory
National Weather Service Spokane WA
1155 AM PST Thu Dec 11 2025
IDC009-017-055-079-120030-
/O.CON.KOTX.FA.Y.0022.000000T0000Z-251212T0030Z/
/00000.N.RS.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Benewah ID-Bonner ID-Kootenai ID-Shoshone ID-
1155 AM PST Thu Dec 11 2025
...FLOOD ADVISORY REMAINS IN EFFECT UNTIL 430 PM PST THIS
AFTERNOON...
* WHAT...Small stream flooding caused by rain and snowmelt
continues. Between 0.5 and 1 inch inches of rain have fallen
within the last 24 hours.
* WHERE...A portion of North Idaho, including the following
counties, Benewah, Bonner, Kootenai and Shoshone.
* WHEN...Until 430 PM PST.
* IMPACTS...River or stream flows are elevated. Small streams will
continue to rise rapidly through at least Thursday morning.
* ADDITIONAL DETAILS...
- At 1150 AM PST, Rain and snowmelt is occurring, and will
cause minor flooding. This will cause small stream flooding.
Between 0.5 and 1 inch has fallen within the last 24 hours,
and 1 to 4 inches has fallen in total.
- Additional rainfall amounts of 0.5 to 1.5 inches are expected
over the area through Friday night. This additional rain will
result in further minor flooding impacts.
- Some locations that will experience flooding include...
St. Maries, Kellogg, Pinehurst, Osburn, Wallace, Mullan,
Smelterville, Clark Fork, East Hope, Wardner, Lookout Pass,
Hope, Silver Mountain, Prichard, Murray, Kingston,
Huckleberry Campground, Calder, Cataldo and Avery.
- http://www.weather.gov/safety/flood
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don`t drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.
&&
LAT...LON 4850 11605 4798 11605 4783 11585 4776 11583
4770 11573 4759 11569 4755 11576 4746 11564
4742 11576 4737 11558 4728 11548 4726 11532
4719 11530 4710 11514 4693 11496 4694 11633
4702 11633 4704 11661 4850 11638
$$
AS
Wind Advisory
URGENT - WEATHER MESSAGE
National Weather Service Missoula MT
614 AM MST Thu Dec 11 2025
MTZ007-120200-
/O.EXB.KMSO.WI.Y.0011.000000T0000Z-251212T0200Z/
Butte/Blackfoot Region-
614 AM MST Thu Dec 11 2025
...WIND ADVISORY IN EFFECT UNTIL 7 PM MST THIS EVENING...
* WHAT...West winds 20 to 30 mph with gusts up to 45 mph.
* WHERE...Butte/Blackfoot Region.
* WHEN...Until 7 PM MST this evening.
* IMPACTS...Gusty winds will blow around unsecured objects. Tree
limbs could be blown down and a few power outages may result.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Winds this strong can make driving difficult, especially for high
profile vehicles. Use extra caution.
&&
$$
Flood Watch
Flood Watch
National Weather Service Missoula MT
1224 PM MST Wed Dec 10 2025
.Heavy rain may fall on a deep primed snowpack leading to the melt
increasing. Flows in rivers may increase quickly and reach critical
levels.
IDC035-111930-
/O.CON.KMSO.FA.A.0009.000000T0000Z-251212T0000Z/
/00000.0.RS.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Clearwater-
1124 AM PST Wed Dec 10 2025
...FLOOD WATCH REMAINS IN EFFECT THROUGH THURSDAY AFTERNOON...
* WHAT...Flooding caused by rain and snowmelt continues to be
possible.
* WHERE...A portion of panhandle Idaho, including the following
county, Clearwater.
* WHEN...Through Thursday afternoon.
* IMPACTS...Creeks and streams may rise out of their banks. Flooding
may occur in poor drainage and urban areas. Storm drains and
ditches may become clogged with debris.
* ADDITIONAL DETAILS...
- https://www.weather.gov/mso/hydrology
$$
Flood Watch
National Weather Service Missoula MT
1224 PM MST Wed Dec 10 2025
.Heavy rain may fall on a deep primed snowpack leading to the melt
increasing. Flows in rivers may increase quickly and reach critical
levels.
MTC029-047-053-061-089-111930-
/O.CON.KMSO.FA.A.0009.000000T0000Z-251212T0000Z/
/00000.0.RS.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Flathead-Lake-Lincoln-Mineral-Sanders-
1224 PM MST Wed Dec 10 2025
...FLOOD WATCH REMAINS IN EFFECT THROUGH THURSDAY AFTERNOON...
* WHAT...Flooding caused by rain and snowmelt continues to be
possible.
* WHERE...Portions of northwest and west central Montana, including
the following counties, in northwest Montana, Flathead, Lake,
Lincoln and Sanders. In west central Montana, Mineral.
* WHEN...Through Thursday afternoon.
* IMPACTS...Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
Flooding may occur in poor drainage and urban areas. Storm drains
and ditches may become clogged with debris.
* ADDITIONAL DETAILS...
- https://www.weather.gov/mso/hydrology
$$
Air Stagnation Advisory
URGENT - WEATHER MESSAGE
National Weather Service Boise ID
1256 PM MST Thu Dec 11 2025
IDZ012-014-016-033-ORZ061>064-121200-
/O.CON.KBOI.AS.Y.0004.251212T1200Z-251215T1200Z/
Lower Treasure Valley-Upper Treasure Valley-Western Magic Valley-
Upper Weiser River-Harney County-Baker County-Malheur County-
Oregon Lower Treasure Valley-
Including the cities of Crane, Council, Twin Falls, Indian
Valley, Nyssa, Venator, Caldwell, Buchanan, Glendale, Malheur
City, Dunnean, Boise, Cambridge, Fruitvale, Mesa, Burns, Diamond,
Nampa, Goodrich, New Princeton, Baker, and Ontario
1256 PM MST Thu Dec 11 2025 /1156 AM PST Thu Dec 11 2025/
...AIR STAGNATION ADVISORY REMAINS IN EFFECT FROM 5 AM MST /4 AM
PST/ FRIDAY TO 5 AM MST /4 AM PST/ MONDAY...
* WHAT...An extended period of stagnant air, with light winds and
little vertical mixing. This is due to an inversion near the
surface that will continue to trap pollutants.
* WHERE...Portions of south central and southwest Idaho and
northeast and southeast Oregon.
* WHEN...From 5 AM MST /4 AM PST/ Friday to 5 AM MST /4 AM PST/
Monday.
* IMPACTS...Poor air quality may cause issues for people with
respiratory problems.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Persons with respiratory illness should follow their physicians
advice for dealing with high levels of air pollution during periods
of stagnant air.
&&
$$
JY
Hazardous Weather Outlook
Hazardous Weather Outlook
National Weather Service Riverton WY
248 PM MST Thu Dec 11 2025
WYZ001>020-022>030-130200-
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 PM MST Thu Dec 11 2025
...HIGH WIND WARNING NOW IN EFFECT UNTIL 5 PM MST THIS AFTERNOON...
...WINTER WEATHER ADVISORY IN EFFECT THE BIGHORN MOUNTAINS FROM
5 PM THIS AFTERNOON TO 7 AM MST FRIDAY...
...WINTER WEATHER ADVISORY IN EFFECT FOR NORTHERN JOHNSON COUNTY
FROM 5 PM THIS AFTERNOON TO 7 AM MST FRIDAY...
This Hazardous Weather Outlook is for Western and Central Wyoming.
.DAY ONE...This afternoon and tonight.
Strong wind this morning will gradually decrease through sunset.
Rain will change to snow across northern Wyoming this evening. With
temperatures quickly freezing, a flash freeze is possible across
northern Johnson County after 8PM.
.DAYS TWO THROUGH SEVEN...Friday through Wednesday.
Friday...Light snow continuing across northern Wyoming.
Tuesday and Wednesday...Chances for snow returning to western
Wyoming. Strong wind possible East of the Divide.
.SPOTTER INFORMATION STATEMENT...
Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.
$$
Hydrologic Outlook
Hydrologic Outlook
IDC049-120700-
Hydrologic Outlook
National Weather Service Missoula MT
1233 PM MST Wed Dec 10 2025
The flood watch has been cancelled, but hydrologic impacts remain a
minor threat through Friday morning. The break in the rain is
allowing creeks and streams to flush out and build capacity for the
next round of moisture tomorrow. This next round will still cause an
increased risk of rock falls and some ponding of water in low lying
areas.
Warm overnight temperatures will cause some snow melt in addition to
another round of rain coming in. So further stream and river rises
are expected, but at this time we do not expect further rises to
measure up to the level of floods.
$$
