839
WWUS45 KTFX 160500
WSWTFX
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE GREAT FALLS MT
1100 PM MDT FRI MAY 15 2026
MTZ301-307-315-322-162000-
/O.EXB.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: SAINT MARY, MARIAS PASS,
LINCOLN, BOULDER, BABB, WICKES, ELK PARK PASS, CORBIN, EAST
GLACIER PARK, FLESHER PASS, MARYSVILLE, LOGAN PASS, CLANCY,
ROGERS PASS, MACDONALD PASS, KIOWA, HOMESTAKE PASS, AND MONTANA
CITY
1100 PM MDT FRI MAY 15 2026
...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT SATURDAY NIGHT 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 SATURDAY NIGHT 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.
MTZ317-320-162000-
/O.EXB.KTFX.WW.Y.0025.260517T0600Z-260518T0600Z/
LITTLE BELT AND HIGHWOOD MOUNTAINS-BIG BELT, BRIDGER AND CASTLE
MOUNTAINS-
INCLUDING THE FOLLOWING LOCATIONS: MONARCH, MAUDLOW, DEEP CREEK
PASS, BOZEMAN PASS, KINGS HILL PASS, BATTLE RIDGE PASS, TRIDENT,
AND NEIHART
1100 PM MDT FRI MAY 15 2026
...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT SATURDAY NIGHT TO
MIDNIGHT MDT SUNDAY NIGHT...
* WHAT...SNOW EXPECTED. TOTAL SNOW ACCUMULATIONS BETWEEN 3 AND 8
INCHES, WITH ISOLATED AMOUNTS UP TO 12 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 SATURDAY NIGHT 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.
MTZ330-162000-
/O.CON.KTFX.WW.Y.0025.260516T2300Z-260517T1200Z/
GALLATIN AND MADISON COUNTY MOUNTAINS AND CENTENNIAL MOUNTAINS-
INCLUDING THE FOLLOWING LOCATIONS: BIG SKY, WEST YELLOWSTONE,
TARGHEE PASS, AND RAYNOLDS PASS
1100 PM MDT FRI MAY 15 2026
...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 5 PM SATURDAY 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 SATURDAY 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 SATURDAY EVENING
AFTER A ROUND OF SHOWERS AND PERHAPS A COUPLE THUNDERSTORMS
SATURDAY 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.
MOLDAN
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