835
WWUS45 KTFX 220556
WSWTFX
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE GREAT FALLS MT
1156 PM MDT TUE APR 21 2026
MTZ330-222100-
/O.UPG.KTFX.WS.A.0006.260423T0000Z-260424T0000Z/
/O.NEW.KTFX.WS.W.0006.260423T0000Z-260424T0000Z/
GALLATIN AND MADISON COUNTY MOUNTAINS AND CENTENNIAL MOUNTAINS-
INCLUDING THE FOLLOWING LOCATIONS: BIG SKY, RAYNOLDS PASS, WEST
YELLOWSTONE, AND TARGHEE PASS
1156 PM MDT TUE APR 21 2026
...WINTER STORM WARNING IN EFFECT FROM 6 PM WEDNESDAY TO 6 PM MDT
THURSDAY...
* WHAT...HEAVY WET SNOW EXPECTED. TOTAL SNOW ACCUMULATIONS BETWEEN 5
AND 12 INCHES, WITH HIGHER AMOUNTS OVER THE MOUNTAIN PEAKS. WINDS
GUSTING AS HIGH AS 40 MPH.
* WHERE...GALLATIN AND MADISON COUNTY MOUNTAINS AND CENTENNIAL
MOUNTAINS.
* WHEN...FROM 6 PM WEDNESDAY TO 6 PM MDT THURSDAY.
* IMPACTS...TRAVEL COULD BE VERY DIFFICULT AND TIRE CHAINS MAY BE
REQUIRED FOR SOME VEHICLES. THOSE IN THE BACKCOUNTRY SHOULD ENSURE
THEY ARE PREPARED FOR DANGEROUS CONDITIONS.
* ADDITIONAL DETAILS...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.
MTZ320-222100-
/O.UPG.KTFX.WS.A.0006.260423T0000Z-260424T0000Z/
/O.EXA.KTFX.WW.Y.0022.260423T0000Z-260424T0000Z/
BIG BELT, BRIDGER AND CASTLE MOUNTAINS-
INCLUDING THE FOLLOWING LOCATIONS: BATTLE RIDGE PASS, MAUDLOW,
BOZEMAN PASS, TRIDENT, AND DEEP CREEK PASS
1156 PM MDT TUE APR 21 2026
...WINTER WEATHER ADVISORY IN EFFECT FROM 6 PM WEDNESDAY TO 6 PM MDT
THURSDAY...
* WHAT...SNOW EXPECTED. TOTAL SNOW ACCUMULATIONS BETWEEN 5 AND 9
INCHES, WITH HIGHER AMOUNTS OVER THE MOUNTAIN PEAKS. WINDS GUSTING
AS HIGH AS 50 MPH.
* WHERE...BIG BELT, BRIDGER AND CASTLE MOUNTAINS.
* WHEN...FROM 6 PM WEDNESDAY TO 6 PM MDT THURSDAY.
* IMPACTS...TIRE CHAINS MAY BE REQUIRED FOR SOME VEHICLES IF
TRAVELING THROUGH MOUNTAIN PASSES. GUSTY WINDS COULD BRING DOWN
TREE BRANCHES.
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.
MTZ314-318-222100-
/O.UPG.KTFX.WS.A.0006.260423T0600Z-260424T0000Z/
/O.EXA.KTFX.WW.Y.0022.260423T0600Z-260424T0000Z/
FERGUS COUNTY BELOW 4500FT-SNOWY AND JUDITH MOUNTAINS-
INCLUDING THE FOLLOWING LOCATIONS: LEWISTOWN AND HILGER
1156 PM MDT TUE APR 21 2026
...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT WEDNESDAY NIGHT
TO 6 PM MDT THURSDAY...
* WHAT...SNOW EXPECTED. TOTAL SNOW ACCUMULATIONS UP TO 3 INCHES,
WITH UP TO 12 INCHES EXPECTED ON MOUNTAIN PEAKS. WINDS GUSTING AS
HIGH AS 55 MPH.
* WHERE...SNOWY AND JUDITH MOUNTAINS AND FERGUS COUNTY BELOW 4500FT.
* WHEN...FROM MIDNIGHT WEDNESDAY NIGHT TO 6 PM MDT THURSDAY.
* IMPACTS...PLAN ON SLIPPERY ROAD CONDITIONS. STRONG WINDS COULD
CAUSE 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.
MTZ301-302-222100-
/O.CON.KTFX.WW.Y.0022.260423T0000Z-260424T0000Z/
EAST GLACIER PARK REGION-NORTHERN HIGH PLAINS-
INCLUDING THE FOLLOWING LOCATIONS: LOGAN PASS, DUPUYER, KIOWA,
SAINT MARY, BROWNING, BABB, HEART BUTTE, EAST GLACIER PARK, AND
MARIAS PASS
1156 PM MDT TUE APR 21 2026
...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 6 PM WEDNESDAY TO
6 PM MDT THURSDAY...
* WHAT...WET SNOW EXPECTED. TOTAL SNOW ACCUMULATIONS UP TO 3 INCHES
OVER THE PLAINS AND BETWEEN 2 AND 6 INCHES AT MARIAS PASS.
ACCUMULATIONS WILL BE IN EXCESS OF 6 INCHES OVER THE HIGHER
TERRAIN OF GLACIER NATIONAL PARK. WINDS GUSTING AS HIGH AS 45 MPH.
* WHERE...EASTERN GLACIER NATIONAL PARK AND ADJACENT FOOTHILLS AND
PLAINS.
* WHEN...FROM 6 PM WEDNESDAY TO 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.
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.
MTZ307-315-316-322-327-329-222100-
/O.CON.KTFX.WW.Y.0022.260423T0000Z-260424T1800Z/
SOUTHERN ROCKY MOUNTAIN FRONT-UPPER BLACKFOOT AND MACDONALD PASS-
GATES OF THE MOUNTAINS-ELKHORN AND BOULDER MOUNTAINS-NORTHWEST
BEAVERHEAD COUNTY-RUBY MOUNTAINS AND SOUTHERN BEAVERHEAD
MOUNTAINS-
INCLUDING THE FOLLOWING LOCATIONS: WISDOM, BIG HOLE PASS, MONIDA
PASS, LINCOLN, MACDONALD PASS, CRAIG, CORBIN, WICKES, HOMESTAKE
PASS, CLANCY, CANYON CREEK, MARYSVILLE, ROGERS PASS, ELK PARK
PASS, BOULDER, FLESHER PASS, DEWEY, MONTANA CITY, WISE RIVER,
WOLF CREEK, AND CHIEF JOSEPH PASS
1156 PM MDT TUE APR 21 2026
...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 6 PM WEDNESDAY TO
NOON MDT FRIDAY...
* WHAT...WET SNOW EXPECTED. TOTAL SNOW ACCUMULATIONS BETWEEN 3 AND 8
INCHES, WITH HIGHER AMOUNTS OVER THE MOUNTAIN PEAKS. WINDS GUSTING
AS HIGH AS 40 MPH.
* WHERE...PORTIONS OF CENTRAL, NORTH CENTRAL, AND SOUTHWEST MONTANA.
* WHEN...FROM 6 PM WEDNESDAY TO 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. 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 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.
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.
MTZ311-222100-
/O.CON.KTFX.WW.Y.0022.260423T0600Z-260424T0000Z/
BEARS PAW MOUNTAINS AND SOUTHERN BLAINE-
INCLUDING THE FOLLOWING LOCATIONS: ROCKY BOY
1156 PM MDT TUE APR 21 2026
...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM MIDNIGHT WEDNESDAY
NIGHT TO 6 PM MDT THURSDAY...
* WHAT...WET SNOW EXPECTED. TOTAL SNOW ACCUMULATIONS BETWEEN 2 AND 6
INCHES OVER THE BEARS PAW MOUNTAINS. WINDS GUSTING OVER 50 MPH AT
TIMES.
* WHERE...BEARS PAW MOUNTAINS AND SOUTHERN BLAINE.
* WHEN...FROM MIDNIGHT WEDNESDAY NIGHT TO 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.
* 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.
MTZ317-222100-
/O.CON.KTFX.WS.A.0006.260423T0000Z-260424T0000Z/
LITTLE BELT AND HIGHWOOD MOUNTAINS-
INCLUDING THE FOLLOWING LOCATIONS: KINGS HILL PASS, NEIHART, AND
MONARCH
1156 PM MDT TUE APR 21 2026
...WINTER STORM WATCH REMAINS IN EFFECT FROM WEDNESDAY EVENING
THROUGH THURSDAY AFTERNOON...
* WHAT...HEAVY, WET SNOW POSSIBLE. TOTAL SNOW ACCUMULATIONS BETWEEN
5 AND 11 INCHES, WITH HIGHER AMOUNTS OVER THE MOUNTAIN PEAKS.
WINDS COULD GUST AS HIGH AS 50 MPH, HIGHEST FOR NORTHERN AREAS.
* WHERE...LITTLE BELT AND HIGHWOOD MOUNTAINS.
* WHEN...FROM WEDNESDAY EVENING THROUGH THURSDAY AFTERNOON.
* 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. 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...
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.
REMEMBER, A WINTER STORM WATCH MEANS THAT THERE IS AT LEAST A 50%
CHANCE OF IMPACTFUL WINTER WEATHER CONDITIONS DURING THE WATCH
PERIOD.
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.
MTZ313-222100-
/O.CON.KTFX.WS.A.0006.260423T0600Z-260424T0000Z/
JUDITH BASIN COUNTY AND JUDITH GAP-
INCLUDING THE FOLLOWING LOCATIONS: GEYSER, MOCCASIN, BENCHLAND,
HOBSON, RAYNESFORD, WINDHAM, AND STANFORD
1156 PM MDT TUE APR 21 2026
...WINTER STORM WATCH REMAINS IN EFFECT FROM LATE WEDNESDAY NIGHT
THROUGH THURSDAY AFTERNOON...
* WHAT...BLIZZARD CONDITIONS POSSIBLE. TOTAL SNOW ACCUMULATIONS OF 2
TO 8 INCHES POSSIBLE. WINDS COULD GUST AS HIGH AS 50 MPH.
* WHERE...JUDITH BASIN COUNTY AND JUDITH GAP.
* WHEN...FROM LATE WEDNESDAY NIGHT THROUGH THURSDAY AFTERNOON.
* IMPACTS...VISIBILITIES MAY DROP BELOW 1/4 MILE DUE TO FALLING AND
BLOWING SNOW. PLAN ON SLIPPERY ROAD CONDITIONS. GUSTY WINDS COULD
BRING DOWN TREE BRANCHES.
* ADDITIONAL DETAILS...THE HEAVY, WET SNOW MAY CAUSE INSTANCES OF
POWER OUTAGES.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
PREPARE FOR POSSIBLE BLIZZARD CONDITIONS. CONTINUE TO MONITOR THE
LATEST FORECASTS FOR UPDATES ON THIS SITUATION.
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 STORM WATCH FOR BLIZZARD CONDITIONS MEANS THAT
THERE IS AT LEAST A 50% CHANCE OF SEEING BLIZZARD CONDITIONS FOR AT
LEAST 3 HOURS DURING THE WATCH PERIOD.
MTZ326-222100-
/O.CON.KTFX.WS.A.0007.260424T0000Z-260424T1800Z/
GALLATIN VALLEY-
INCLUDING THE FOLLOWING LOCATIONS: GALLATIN GATEWAY AND BOZEMAN
1156 PM MDT TUE APR 21 2026
...WINTER STORM WATCH REMAINS IN EFFECT FROM THURSDAY EVENING
THROUGH FRIDAY MORNING...
* WHAT...HEAVY, WET SNOW POSSIBLE. TOTAL SNOW ACCUMULATIONS BETWEEN
2 AND 8 INCHES POSSIBLE, HIGHEST OVER THE SOUTH AND EAST PORTIONS
OF THE GALLATIN VALLEY.
* WHERE...GALLATIN VALLEY.
* WHEN...FROM THURSDAY EVENING THROUGH FRIDAY MORNING.
* IMPACTS...EXPECT DIFFICULT DRIVING CONDITIONS DUE TO SLUSH OR SNOW
COVERED ROADWAYS. THE HAZARDOUS CONDITIONS COULD IMPACT THE
THURSDAY EVENING AND FRIDAY MORNING COMMUTES.
* ADDITIONAL DETAILS...THE HEAVY, WET SNOW MAY CAUSE INSTANCES OF
POWER OUTAGES AND OR TREE DAMAGE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MONITOR THE LATEST FORECASTS FOR UPDATES ON THIS SITUATION.
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.
IG
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