503
WWUS45 KTFX 161829
WSWTFX
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE GREAT FALLS MT
1229 PM MDT SAT MAY 16 2026
MTZ330-170930-
/O.CON.KTFX.WW.Y.0025.260516T2300Z-260517T1200Z/
GALLATIN AND MADISON COUNTY MOUNTAINS AND CENTENNIAL MOUNTAINS-
INCLUDING THE FOLLOWING LOCATIONS: TARGHEE PASS, WEST
YELLOWSTONE, RAYNOLDS PASS, AND BIG SKY
1229 PM MDT SAT MAY 16 2026
...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 5 PM THIS
AFTERNOON TO 6 AM MDT SUNDAY...
* WHAT...SNOW EXPECTED. 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...FROM 5 PM THIS AFTERNOON TO 6 AM MDT SUNDAY.
* IMPACTS...PLAN ON SLIPPERY AND SLUSHY ROAD CONDITIONS AND RAW BACK
COUNTRY CONDITIONS SATURDAY EVENING INTO SUNDAY.
* ADDITIONAL DETAILS...SNOW LEVELS QUICKLY FALL THIS EVENING AFTER A
ROUND OF SHOWERS AND PERHAPS A COUPLE THUNDERSTORMS THIS
AFTERNOON. THOSE WITH BACK COUNTRY PLANS SHOULD BE AWARE OF THE
FORECAST RAW 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.
MTZ301-307-315-322-170930-
/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: CORBIN, ELK PARK PASS, CLANCY,
MARYSVILLE, WICKES, BABB, MARIAS PASS, EAST GLACIER PARK, LOGAN
PASS, ROGERS PASS, LINCOLN, FLESHER PASS, MACDONALD PASS, MONTANA
CITY, BOULDER, KIOWA, HOMESTAKE PASS, AND SAINT MARY
1229 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.
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.
MTZ317-320-170930-
/O.CON.KTFX.WW.Y.0025.260517T0600Z-260518T0600Z/
LITTLE BELT AND HIGHWOOD MOUNTAINS-BIG BELT, BRIDGER AND CASTLE
MOUNTAINS-
INCLUDING THE FOLLOWING LOCATIONS: DEEP CREEK PASS, MONARCH,
BOZEMAN PASS, KINGS HILL PASS, TRIDENT, MAUDLOW, NEIHART, AND
BATTLE RIDGE PASS
1229 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.
IG
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