635
WWUS45 KTFX 230543
WSWTFX
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE GREAT FALLS MT
1143 PM MDT WED APR 22 2026
MTZ317-240000-
/O.CON.KTFX.WS.W.0006.000000T0000Z-260424T0000Z/
LITTLE BELT AND HIGHWOOD MOUNTAINS-
INCLUDING THE FOLLOWING LOCATIONS: MONARCH, KINGS HILL PASS, AND
NEIHART
1143 PM MDT WED APR 22 2026
..WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THURSDAY
* WHAT...HEAVY, WET SNOW EXPECTED. ADDITIONAL SNOW ACCUMULATIONS
BETWEEN 6 AND 12 INCHES, WITH HIGHER AMOUNTS OVER THE MOUNTAIN
PEAKS. WINDS COULD GUST AS HIGH AS 50 MPH.
* WHERE...LITTLE BELT AND HIGHWOOD MOUNTAINS.
* WHEN...UNTIL 6 PM MDT THURSDAY.
* IMPACTS...EXPECT DIFFICULT DRIVING CONDITIONS DUE TO SLUSH OR SNOW
COVERED ROADWAYS. FALLING AND OR BLOWING SNOW MAY SIGNIFICANTLY
REDUCE VISIBILITY BELOW A QUARTER MILE AT TIMES. THOSE WITH
OUTDOOR PLANS SHOULD BE PREPARED FOR DANGEROUS OUTDOOR CONDITIONS.
* ADDITIONAL DETAILS...THE HEAVY, WET SNOW MAY CAUSE INSTANCES OF
POWER OUTAGES AND OR TREE DAMAGE.
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.
TO SEE A GRAPHICAL REPRESENTATION OF THE DEGREE OF STRESS ON YOUNG
LIVESTOCK PLEASE VISIT OUR WEBPAGE AND SELECT LOCAL PROGRAMS THEN
COLD AIR ADVISORY FOR NEWBORN LIVESTOCK.
MTZ330-240000-
/O.CON.KTFX.WS.W.0006.000000T0000Z-260424T1800Z/
GALLATIN AND MADISON COUNTY MOUNTAINS AND CENTENNIAL MOUNTAINS-
INCLUDING THE FOLLOWING LOCATIONS: WEST YELLOWSTONE, TARGHEE
PASS, RAYNOLDS PASS, AND BIG SKY
1143 PM MDT WED APR 22 2026
..WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON MDT FRIDAY
* WHAT...HEAVY, WET SNOW. ADDITIONAL SNOW ACCUMULATIONS BETWEEN 7
AND 14 INCHES, WITH HIGHER AMOUNTS ON PEAKS. WINDS GUSTING AS HIGH
AS 35 MPH.
* WHERE...GALLATIN AND MADISON COUNTY MOUNTAINS AND CENTENNIAL
MOUNTAINS.
* WHEN...UNTIL NOON MDT FRIDAY.
* IMPACTS...EXPECT DIFFICULT DRIVING CONDITIONS DUE TO SLUSH OR SNOW
COVERED ROADWAYS. FALLING AND OR BLOWING SNOW MAY SIGNIFICANTLY
REDUCE VISIBILITY AT TIMES. THOSE WITH OUTDOOR PLANS SHOULD BE
PREPARED FOR DANGEROUS OUTDOOR CONDITIONS.
* ADDITIONAL DETAILS...THE HEAVY, WET SNOW MAY CAUSE INSTANCES OF
POWER OUTAGES AND OR TREE DAMAGE.
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.
TO SEE A GRAPHICAL REPRESENTATION OF THE DEGREE OF STRESS ON YOUNG
LIVESTOCK PLEASE VISIT OUR WEBPAGE AND SELECT LOCAL PROGRAMS THEN
COLD AIR ADVISORY FOR NEWBORN LIVESTOCK.
MTZ313-240000-
/O.CON.KTFX.WS.W.0006.260423T0600Z-260424T0000Z/
JUDITH BASIN COUNTY AND JUDITH GAP-
INCLUDING THE FOLLOWING LOCATIONS: WINDHAM, MOCCASIN, BENCHLAND,
STANFORD, HOBSON, RAYNESFORD, AND GEYSER
1143 PM MDT WED APR 22 2026
..WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THURSDAY
* WHAT...HEAVY, WET SNOW EXPECTED. TOTAL SNOW ACCUMULATIONS OF 2 TO
8 INCHES POSSIBLE, HEAVIEST OVER NORTHWESTERN JUDITH BASIN COUNTY.
WINDS COULD GUST AS HIGH AS 50 MPH.
* WHERE...JUDITH BASIN COUNTY AND JUDITH GAP.
* WHEN...UNTIL 6 PM MDT THURSDAY.
* IMPACTS...EXPECT DIFFICULT DRIVING CONDITIONS DUE TO SLUSH OR SNOW
COVERED ROADWAYS. FALLING AND OR BLOWING SNOW MAY SIGNIFICANTLY
REDUCE VISIBILITY BELOW A QUARTER MILE AT TIMES.
* ADDITIONAL DETAILS...THE HEAVY, WET SNOW MAY CAUSE INSTANCES OF
POWER OUTAGES AND OR TREE DAMAGE.
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.
TO SEE A GRAPHICAL REPRESENTATION OF THE DEGREE OF STRESS ON YOUNG
LIVESTOCK PLEASE VISIT OUR WEBPAGE AND SELECT LOCAL PROGRAMS THEN
COLD AIR ADVISORY FOR NEWBORN LIVESTOCK.
MTZ301-302-240000-
/O.CON.KTFX.WW.Y.0022.000000T0000Z-260424T0000Z/
EAST GLACIER PARK REGION-NORTHERN HIGH PLAINS-
INCLUDING THE FOLLOWING LOCATIONS: LOGAN PASS, MARIAS PASS, EAST
GLACIER PARK, BABB, DUPUYER, BROWNING, KIOWA, SAINT MARY, AND
HEART BUTTE
1143 PM MDT WED APR 22 2026
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT
THURSDAY...
* WHAT...SNOW. ADDITIONAL SNOW ACCUMULATIONS UP TO 2 INCHES AT LOWER
ELEVATIONS, 4 INCHES AT MARIAS PASS, AND 8 INCHES OVER THE HIGH
TERRAIN. WINDS GUSTING AS HIGH AS 45 MPH.
* WHERE...EASTERN GLACIER NATIONAL PARK AND ADJACENT FOOTHILLS AND
PLAINS.
* WHEN...UNTIL 6 PM MDT THURSDAY.
* IMPACTS...EXPECT DIFFICULT DRIVING CONDITIONS DUE TO SLUSH OR SNOW
COVERED ROADWAYS. FALLING AND OR BLOWING SNOW MAY SIGNIFICANTLY
REDUCE VISIBILITY AT TIMES. TIRE CHAINS MAY BE REQUIRED FOR SOME
VEHICLES IF TRAVELING THROUGH MOUNTAIN PASSES. THOSE WITH OUTDOOR
PLANS SHOULD BE PREPARED FOR DANGEROUS OUTDOOR CONDITIONS.
* ADDITIONAL DETAILS...THE HEAVY, WET SNOW MAY CAUSE INSTANCES OF
POWER OUTAGES AND OR TREE DAMAGE.
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.
TO SEE A GRAPHICAL REPRESENTATION OF THE DEGREE OF STRESS ON YOUNG
LIVESTOCK PLEASE VISIT OUR WEBPAGE AND SELECT LOCAL PROGRAMS THEN
COLD AIR ADVISORY FOR NEWBORN LIVESTOCK.
MTZ307-315-316-319-322-327-329-240000-
/O.CON.KTFX.WW.Y.0022.000000T0000Z-260424T1800Z/
SOUTHERN ROCKY MOUNTAIN FRONT-UPPER BLACKFOOT AND MACDONALD PASS-
GATES OF THE MOUNTAINS-HELENA VALLEY-ELKHORN AND BOULDER
MOUNTAINS-NORTHWEST BEAVERHEAD COUNTY-RUBY MOUNTAINS AND SOUTHERN
BEAVERHEAD MOUNTAINS-
INCLUDING THE FOLLOWING LOCATIONS: DEWEY, MACDONALD PASS, CLANCY,
CANYON CREEK, CHIEF JOSEPH PASS, LINCOLN, BIG HOLE PASS, FLESHER
PASS, CRAIG, MONIDA PASS, MARYSVILLE, WISE RIVER, ELK PARK PASS,
ROGERS PASS, CORBIN, HOMESTAKE PASS, WOLF CREEK, WICKES, BOULDER,
HELENA, MONTANA CITY, AND WISDOM
1143 PM MDT WED APR 22 2026
..WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON MDT FRIDAY
* WHAT...SNOW. ADDITIONAL SNOW ACCUMULATIONS UP TO 4 INCHES AT LOWER
ELEVATIONS AND 8 INCHES IN THE MOUNTAINS. WINDS GUSTING AS HIGH AS
40 MPH.
* WHERE...PORTIONS OF CENTRAL, NORTH CENTRAL, AND SOUTHWEST MONTANA.
* WHEN...UNTIL NOON MDT FRIDAY.
* 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. THE HAZARDOUS
CONDITIONS COULD IMPACT THE THURSDAY MORNING AND EVENING COMMUTES.
* ADDITIONAL DETAILS...SNOW LEVELS WILL GRADUALLY FALL TO LOWER
ELEVATIONS THROUGH THE NIGHT AND EARLY THURSDAY MORNING.
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.
TO SEE A GRAPHICAL REPRESENTATION OF THE DEGREE OF STRESS ON YOUNG
LIVESTOCK PLEASE VISIT OUR WEBPAGE AND SELECT LOCAL PROGRAMS THEN
COLD AIR ADVISORY FOR NEWBORN LIVESTOCK.
MTZ320-240000-
/O.CON.KTFX.WW.Y.0022.000000T0000Z-260424T1800Z/
BIG BELT, BRIDGER AND CASTLE MOUNTAINS-
INCLUDING THE FOLLOWING LOCATIONS: BOZEMAN PASS, BATTLE RIDGE
PASS, TRIDENT, MAUDLOW, AND DEEP CREEK PASS
1143 PM MDT WED APR 22 2026
..WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON MDT FRIDAY
* WHAT...SNOW. ADDITIONAL SNOW ACCUMULATIONS BETWEEN 3 AND 7 INCHES
AT AND NEAR PASS LEVEL, WITH GREATER AMOUNTS ABOVE PASS LEVEL.
WINDS GUSTING AS HIGH AS 45 MPH.
* WHERE...BIG BELT, BRIDGER AND CASTLE MOUNTAINS.
* WHEN...UNTIL NOON MDT FRIDAY.
* IMPACTS...EXPECT DIFFICULT DRIVING CONDITIONS DUE TO SLUSH OR SNOW
COVERED ROADWAYS. THOSE IN THE BACKCOUNTRY SHOULD ENSURE THEY ARE
PREPARED FOR DANGEROUS CONDITIONS.
* ADDITIONAL DETAILS...THE WET SNOW MAY CAUSE ISOLATED INSTANCES OF
POWER OUTAGES AND OR TREE DAMAGE.
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.
TO SEE A GRAPHICAL REPRESENTATION OF THE DEGREE OF STRESS ON YOUNG
LIVESTOCK PLEASE VISIT OUR WEBPAGE AND SELECT LOCAL PROGRAMS THEN
COLD AIR ADVISORY FOR NEWBORN LIVESTOCK.
MTZ311-314-318-240000-
/O.CON.KTFX.WW.Y.0022.260423T0600Z-260424T0000Z/
BEARS PAW MOUNTAINS AND SOUTHERN BLAINE-FERGUS COUNTY BELOW
4500FT-SNOWY AND JUDITH MOUNTAINS-
INCLUDING THE FOLLOWING LOCATIONS: HILGER, LEWISTOWN, AND ROCKY
BOY
1143 PM MDT WED APR 22 2026
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT
THURSDAY...
* WHAT...WET SNOW EXPECTED. TOTAL SNOW ACCUMULATIONS BETWEEN 2 AND 8
INCHES, HIGHEST OVER THE BEARS PAW AND SNOWY MOUNTAINS. WINDS
GUSTING OVER 50 MPH AT TIMES.
* WHERE...SNOWY AND JUDITH MOUNTAINS, BEARS PAW MOUNTAINS AND
SOUTHERN BLAINE, AND FERGUS COUNTY BELOW 4500FT.
* WHEN...UNTIL 6 PM MDT THURSDAY.
* IMPACTS...EXPECT DIFFICULT DRIVING CONDITIONS DUE TO SLUSH OR SNOW
COVERED ROADWAYS. FALLING AND OR BLOWING SNOW MAY SIGNIFICANTLY
REDUCE VISIBILITY AT TIMES. THOSE WITH OUTDOOR PLANS SHOULD BE
PREPARED FOR DANGEROUS OUTDOOR CONDITIONS.
* ADDITIONAL DETAILS...THE WET SNOW MAY CAUSE INSTANCES OF POWER
OUTAGES AND OR TREE DAMAGE.
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.
TO SEE A GRAPHICAL REPRESENTATION OF THE DEGREE OF STRESS ON YOUNG
LIVESTOCK PLEASE VISIT OUR WEBPAGE AND SELECT LOCAL PROGRAMS THEN
COLD AIR ADVISORY FOR NEWBORN LIVESTOCK.
MTZ312-231800-
/O.CON.KTFX.WW.Y.0022.260423T0600Z-260423T1800Z/
CASCADE COUNTY BELOW 5000FT-
INCLUDING THE FOLLOWING LOCATIONS: GREAT FALLS
1143 PM MDT WED APR 22 2026
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON MDT
THURSDAY...
* WHAT...WET SNOW EXPECTED. TOTAL SNOW ACCUMULATIONS UP TO 5 INCHES,
HIGHEST OVER SOUTHERN AND EASTERN CASCADE COUNTY.
* WHERE...CASCADE COUNTY BELOW 5000FT.
* WHEN...UNTIL NOON MDT THURSDAY.
* IMPACTS...EXPECT HIGHLY VARIABLE ROAD CONDITIONS, INCLUDING
DIFFICULT DRIVING DUE TO SLUSH OR SNOW COVERED ROADWAYS.
* ADDITIONAL DETAILS...LITTLE SNOW IS FORECAST IN GREAT FALLS.
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.
TO SEE A GRAPHICAL REPRESENTATION OF THE DEGREE OF STRESS ON YOUNG
LIVESTOCK PLEASE VISIT OUR WEBPAGE AND SELECT LOCAL PROGRAMS THEN
COLD AIR ADVISORY FOR NEWBORN LIVESTOCK.
MTZ323>326-328-240000-
/O.CON.KTFX.WW.Y.0022.260424T0000Z-260424T1800Z/
CANYON FERRY AREA-MISSOURI HEADWATERS-MADISON RIVER VALLEY-
GALLATIN VALLEY-BEAVERHEAD AND WESTERN MADISON BELOW 6000FT-
INCLUDING THE FOLLOWING LOCATIONS: HARRISON, BANNACK, DILLON,
CAMERON, GLEN, GALLATIN GATEWAY, WATERLOO, TOWNSEND, MCALLISTER,
JEFFERS, TOSTON, PONY, BOZEMAN, WILLOW CREEK, ENNIS, WINSTON,
NORRIS, WHITEHALL, AND THREE FORKS
1143 PM MDT WED APR 22 2026
...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 6 PM THURSDAY TO
NOON MDT FRIDAY...
* WHAT...SNOW EXPECTED. TOTAL SNOW ACCUMULATIONS BETWEEN 1 AND 3
INCHES. WINDS GUSTING AS HIGH AS 35 MPH.
* WHERE...THE INTERSTATE 90 CORRIDOR BETWEEN BOZEMAN AND WHITEHALL,
THE MADISON AND BEAVERHEAD RIVER VALLEYS, AND CANYON FERRY AREA.
* WHEN...FROM 6 PM THURSDAY TO NOON MDT FRIDAY.
* IMPACTS...PLAN ON SLIPPERY ROAD CONDITIONS. THE HAZARDOUS
CONDITIONS COULD IMPACT THE THURSDAY EVENING AND FRIDAY MORNING
COMMUTES.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SLOW DOWN AND USE CAUTION WHILE TRAVELING. THE LATEST ROAD
CONDITIONS CAN BE OBTAINED BY CALLING 5 1 1 OR VISITING THE MDT ROAD
REPORT WEBSITE.
TO SEE A GRAPHICAL REPRESENTATION OF THE DEGREE OF STRESS ON YOUNG
LIVESTOCK PLEASE VISIT OUR WEBPAGE AND SELECT LOCAL PROGRAMS THEN
COLD AIR ADVISORY FOR NEWBORN LIVESTOCK.
REMEMBER, A WINTER WEATHER ADVISORY MEANS THAT THERE IS AT LEAST AN
80% CHANCE OF MINOR IMPACTS DUE TO WINTER WEATHER CONDITIONS DURING
THE ADVISORY PERIOD.
AM
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page