029
WWUS45 KTFX 170244
WSWTFX
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE GREAT FALLS MT
844 PM MDT SAT MAY 16 2026
MTZ325-326-171200-
/O.EXA.KTFX.WW.Y.0025.000000T0000Z-260517T1200Z/
MADISON RIVER VALLEY-GALLATIN VALLEY-
INCLUDING THE FOLLOWING LOCATIONS: CAMERON, ENNIS, GALLATIN
GATEWAY, MCALLISTER, BOZEMAN, JEFFERS, AND NORRIS
844 PM MDT SAT MAY 16 2026
..WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 AM MDT SUNDAY
* WHAT...SNOW. ADDITIONAL SNOW ACCUMULATIONS OF 1 TO 3 INCHES
POSSIBLE.
* WHERE...GALLATIN VALLEY AND MADISON RIVER VALLEY.
* WHEN...UNTIL 6 AM MDT SUNDAY.
* IMPACTS...PLAN ON SLIPPERY ROAD CONDITIONS.
* ADDITIONAL DETAILS...SNOW WILL START ACCUMULATING ON GRASSY AREAS
AND ELEVATED ROADWAYS SUCH AS BRIDGES AND OVERPASSES BEFORE
EVENTUALLY ACCUMULATING ON PAVED ROADS AS SNOW CONTINUES THROUGH
THE NIGHT.
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.
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.
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.
MTZ330-171200-
/O.CON.KTFX.WW.Y.0025.000000T0000Z-260517T1200Z/
GALLATIN AND MADISON COUNTY MOUNTAINS AND CENTENNIAL MOUNTAINS-
INCLUDING THE FOLLOWING LOCATIONS: RAYNOLDS PASS, TARGHEE PASS,
BIG SKY, AND WEST YELLOWSTONE
844 PM MDT SAT MAY 16 2026
..WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM MDT SUNDAY
* WHAT...SNOW. TOTAL SNOW ACCUMULATIONS 3 TO 7 INCHES, WITH HIGHER
AMOUNTS ON HIGH PEAKS. WINDS GUSTING AS HIGH AS 40 MPH.
* WHERE...GALLATIN AND MADISON COUNTY MOUNTAINS AND CENTENNIAL
MOUNTAINS.
* WHEN...UNTIL 6 AM MDT SUNDAY.
* IMPACTS...PLAN ON SLIPPERY AND SLUSHY ROAD CONDITIONS AND RAW BACK
COUNTRY CONDITIONS SATURDAY EVENING INTO SUNDAY.
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.
MTZ301-307-315-322-171745-
/O.CON.KTFX.WW.Y.0025.260517T0600Z-260518T0600Z/
EAST GLACIER PARK REGION-SOUTHERN ROCKY MOUNTAIN FRONT-UPPER
BLACKFOOT AND MACDONALD PASS-ELKHORN AND BOULDER MOUNTAINS-
INCLUDING THE FOLLOWING LOCATIONS: BABB, ELK PARK PASS, CLANCY,
MARIAS PASS, WICKES, HOMESTAKE PASS, KIOWA, ROGERS PASS, CORBIN,
EAST GLACIER PARK, MARYSVILLE, MACDONALD PASS, MONTANA CITY,
SAINT MARY, LOGAN PASS, LINCOLN, BOULDER, AND FLESHER PASS
844 PM MDT SAT MAY 16 2026
...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT
TO MIDNIGHT MDT SUNDAY NIGHT...
* WHAT...SNOW EXPECTED. TOTAL SNOW ACCUMULATIONS BETWEEN 2 AND 6
INCHES OVER MOST MOUNTAIN PASSES, WITH UP TO 12 INCHES OVER THE
HIGHEST PEAKS. WINDS GUSTING AS HIGH AS 40 MPH.
* WHERE...THE CONTINENTAL DIVIDE ALONG THE ROCKY MOUNTAIN FRONT,
UPPER BLACKFOOT AND MACDONALD PASS, AND ELKHORN AND BOULDER
MOUNTAINS.
* WHEN...FROM MIDNIGHT TONIGHT TO MIDNIGHT MDT SUNDAY NIGHT.
* IMPACTS...PLAN ON SLIPPERY BACKCOUNTRY ROAD CONDITIONS. WET AND
RAW CONDITIONS MAY CREATE HYPOTHERMIA RISK FOR THOSE RECREATING IN
THE BACKCOUNTRY.
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.
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.
MTZ317-320-171745-
/O.CON.KTFX.WW.Y.0025.260517T0600Z-260518T0600Z/
LITTLE BELT AND HIGHWOOD MOUNTAINS-BIG BELT, BRIDGER AND CASTLE
MOUNTAINS-
INCLUDING THE FOLLOWING LOCATIONS: BATTLE RIDGE PASS, TRIDENT,
DEEP CREEK PASS, BOZEMAN PASS, MONARCH, KINGS HILL PASS, MAUDLOW,
AND NEIHART
844 PM MDT SAT MAY 16 2026
...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT
TO MIDNIGHT MDT SUNDAY NIGHT...
* WHAT...SNOW EXPECTED. TOTAL SNOW ACCUMULATIONS BETWEEN 3 AND 8
INCHES, WITH ISOLATED AMOUNTS UP TO 11 INCHES IN THE NORTHERN
SLOPES OF THE LITTLE BELT MOUNTAINS. WINDS GUSTING AS HIGH AS 40
MPH.
* WHERE...BIG BELT, BRIDGER AND CASTLE MOUNTAINS AND LITTLE BELT AND
HIGHWOOD MOUNTAINS.
* WHEN...FROM MIDNIGHT TONIGHT TO MIDNIGHT MDT SUNDAY NIGHT.
* IMPACTS...PLAN ON SLIPPERY BACKCOUNTRY ROAD CONDITIONS. WET AND
RAW CONDITIONS MAY CREATE HYPOTHERMIA RISK FOR THOSE RECREATING IN
THE BACKCOUNTRY.
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.
GLINSKAS
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