029  
WWUS45 KBYZ 132034  
WSWBYZ  
 
URGENT - WINTER WEATHER MESSAGE  
NATIONAL WEATHER SERVICE BILLINGS MT  
234 PM MDT FRI MAR 13 2026  
 
MTZ029-034-042-063-141-172-173-228-235-142045-  
/O.CON.KBYZ.WS.W.0004.000000T0000Z-260315T1200Z/  
MUSSELSHELL-NORTHERN STILLWATER-GOLDEN VALLEY-JUDITH GAP-NORTHERN  
SWEET GRASS-MELVILLE FOOTHILLS-NORTHEASTERN YELLOWSTONE-SOUTHERN  
WHEATLAND-SOUTHWESTERN YELLOWSTONE-  
INCLUDING THE LOCATIONS OF HUNTLEY, RYEGATE, RAPELJE, MUSSELSHELL,  
BILLINGS, BIG TIMBER, POMPEYS PILLAR, ABSAROKEE, JUDITH GAP,  
HARLOWTON, BROADVIEW, PARK CITY, COLUMBUS, MELSTONE, SHAWMUT,  
MELVILLE, REED POINT, LAUREL, ROUNDUP, CUSTER, LAVINA, AND TWODOT  
234 PM MDT FRI MAR 13 2026  
   
..WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MDT SUNDAY  
 
* WHAT...HEAVY MIXED PRECIPITATION OCCURRING. ADDITIONAL SNOW  
ACCUMULATIONS BETWEEN 3 AND 10 INCHES AND ICE ACCUMULATIONS AROUND  
A LIGHT GLAZE. THE GREATEST ADDITIONAL SNOW ACCUMULATIONS WILL FALL  
NORTH AND WEST OF BILLINGS. WINDS GUSTING AS HIGH AS 40 MPH.  
 
* WHERE...PORTIONS OF CENTRAL AND SOUTH CENTRAL MONTANA.  
 
* WHEN...UNTIL 6 AM MDT SUNDAY.  
 
* IMPACTS...TRAVEL COULD BE VERY DIFFICULT AT TIMES. THE HAZARDOUS  
CONDITIONS WILL IMPACT THE FRIDAY COMMUTES. COLD AND WET CONDITIONS  
WILL BE DANGEROUS FOR YOUNG LIVESTOCK.  
 
* ADDITIONAL DETAILS...PRECIPITATION MAY DIMINISH THIS EVENING (6PM  
TO MIDNIGHT) AND SATURDAY MORNING (5AM TO 10AM), BECOMING MIXED  
PRECIPITATION TO FREEZING RAIN. THE MOST LIKELY LOCATIONS FOR MIXED  
PRECIPITATION ARE IN YELLOWSTONE, STILLWATER, AND SWEET GRASS  
COUNTIES. SNOW IS EXPECTED TO FILL BACK IN SATURDAY.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
IF YOU MUST TRAVEL, KEEP AN EXTRA FLASHLIGHT, FOOD, AND WATER IN YOUR  
VEHICLE IN CASE OF AN EMERGENCY. FOR THE LATEST ROAD CONDITIONS, CALL  
5 1 1.  
 
 
 
 
 
MTZ030-057-138-142045-  
/O.CON.KBYZ.WS.W.0004.000000T0000Z-260315T1200Z/  
TREASURE-NORTHERN BIG HORN-SOUTHERN BIG HORN-  
INCLUDING THE LOCATIONS OF BUSBY, CROW AGENCY, LODGE GRASS, HYSHAM,  
PRYOR, WYOLA, HARDIN, AND BIGHORN  
234 PM MDT FRI MAR 13 2026  
   
..WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MDT SUNDAY  
 
* WHAT...PERIODS OF MODERATE TO HEAVY SNOW OCCURRING. PERIODS OF  
MIXED PRECIPITATION POSSIBLE. ADDITIONAL SNOW ACCUMULATIONS BETWEEN  
2 AND 7 INCHES AND ICE ACCUMULATIONS AROUND A LIGHT GLAZE. WINDS  
GUSTING AS HIGH AS 35 MPH.  
 
* WHERE...NORTHERN BIG HORN, SOUTHERN BIG HORN, AND TREASURE.  
 
* WHEN...UNTIL 6 AM MDT SUNDAY.  
 
* IMPACTS...TRAVEL COULD BE VERY DIFFICULT AT TIMES. THE HAZARDOUS  
CONDITIONS WILL IMPACT THE FRIDAY COMMUTES. COLD AND WET CONDITIONS  
WILL BE DANGEROUS FOR YOUNG LIVESTOCK.  
 
* ADDITIONAL DETAILS...ROAD CONDITIONS WILL REMAIN SLUSHY THROUGH  
TODAY. A PERIOD OF MIXED PRECIPITATION IS POSSIBLE THIS EVENING,  
INCLUDING FREEZING RAIN. THE CHANCE FOR FREEZING RAIN IS GREATEST  
ALONG I-90 THROUGH TREASURE COUNTY. EXPECT SNOW TO FILL BACK IN ON  
SATURDAY.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
IF YOU MUST TRAVEL, KEEP AN EXTRA FLASHLIGHT, FOOD, AND WATER IN YOUR  
VEHICLE IN CASE OF AN EMERGENCY. FOR THE LATEST ROAD CONDITIONS, CALL  
5 1 1.  
 
 
 
 
 
MTZ031-036-058-142045-  
/O.CON.KBYZ.WS.W.0005.000000T0000Z-260315T1200Z/  
NORTHERN ROSEBUD-POWDER RIVER-SOUTHERN ROSEBUD-  
INCLUDING THE LOCATIONS OF FORSYTH, POWDERVILLE, BIDDLE, LAME DEER,  
COLSTRIP, INGOMAR, BIRNEY, ANGELA, BROADUS, SONNETTE, AND ASHLAND  
234 PM MDT FRI MAR 13 2026  
   
..WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MDT SUNDAY  
 
* WHAT...HEAVY SNOW OCCURRING. ADDITIONAL SNOW ACCUMULATIONS BETWEEN  
4 AND 9 INCHES. WINDS GUSTING AS HIGH AS 30 MPH.  
 
* WHERE...NORTHERN ROSEBUD, POWDER RIVER, AND SOUTHERN ROSEBUD.  
 
* WHEN...UNTIL 6 AM MDT SUNDAY.  
 
* IMPACTS...TRAVEL COULD BE VERY DIFFICULT. THE HAZARDOUS CONDITIONS  
WILL IMPACT THE FRIDAY EVENING COMMUTE. ROADS, AND ESPECIALLY  
BRIDGES AND OVERPASSES, WILL LIKELY BECOME SLICK AND HAZARDOUS.  
COLD AND WET CONDITIONS WILL BE DANGEROUS FOR YOUNG LIVESTOCK.  
 
* ADDITIONAL DETAILS...THE HEAVIEST SNOWFALL WILL FALL TONIGHT AND  
SATURDAY.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
IF YOU MUST TRAVEL, KEEP AN EXTRA FLASHLIGHT, FOOD, AND WATER IN YOUR  
VEHICLE IN CASE OF AN EMERGENCY. FOR THE LATEST ROAD CONDITIONS, CALL  
5 1 1.  
 
 
 
 
 
MTZ032-033-037-142045-  
/O.CON.KBYZ.WS.W.0004.000000T0000Z-260315T1200Z/  
CUSTER-FALLON-CARTER-  
INCLUDING THE LOCATIONS OF WEBSTER, HAMMOND, VOLBORG, PLEVNA, ISMAY,  
ALZADA, BAKER, EKALAKA, BELLTOWER, AND MILES CITY  
234 PM MDT FRI MAR 13 2026  
   
..WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MDT SUNDAY  
 
* WHAT...PERIODS OF HEAVY SNOW. SNOW ACCUMULATIONS BETWEEN 4 AND 9  
INCHES. WINDS GUSTING AS HIGH AS 30 MPH.  
 
* WHERE...CARTER, CUSTER, AND FALLON.  
 
* WHEN...UNTIL 6 AM MDT SUNDAY.  
 
* IMPACTS...TRAVEL COULD BE VERY DIFFICULT. THE HAZARDOUS CONDITIONS  
WILL IMPACT THE FRIDAY EVENING COMMUTE. ROADS, AND ESPECIALLY  
BRIDGES AND OVERPASSES, WILL LIKELY BECOME SLICK AND HAZARDOUS.  
COLD AND WET CONDITIONS WILL BE DANGEROUS FOR YOUNG LIVESTOCK.  
 
* ADDITIONAL DETAILS...THE HEAVIEST SNOWFALL WILL FALL TONIGHT AND  
SATURDAY.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
IF YOU MUST TRAVEL, KEEP AN EXTRA FLASHLIGHT, FOOD, AND WATER IN YOUR  
VEHICLE IN CASE OF AN EMERGENCY. FOR THE LATEST ROAD CONDITIONS, CALL  
5 1 1.  
 
 
 
 
 
MTZ067-068-142045-  
/O.CON.KBYZ.WS.W.0005.000000T0000Z-260315T1200Z/  
ABSAROKA/BEARTOOTH MOUNTAINS-CRAZY MOUNTAINS-  
INCLUDING THE LOCATIONS OF COOKE CITY  
234 PM MDT FRI MAR 13 2026  
   
..WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MDT SUNDAY  
 
* WHAT...HEAVY SNOW OCCURRING. ADDITIONAL SNOW ACCUMULATIONS BETWEEN  
1 AND 4 FEET, GREATEST IN THE ABSAROKA/BEARTOOTHS. LOCALLY HIGHER  
AMOUNTS POSSIBLE.  
 
* WHERE...ABSAROKA/BEARTOOTH MOUNTAINS AND CRAZY MOUNTAINS.  
 
* WHEN...UNTIL 6 AM MDT SUNDAY.  
 
* IMPACTS...RECREATION IN THE HIGH COUNTRY WILL BE IMPACTED BY HEAVY  
ACCUMULATING SNOW. WIDESPREAD BLOWING SNOW COULD SIGNIFICANTLY  
REDUCE VISIBILITY. AVALANCHE DANGER IS EXPECTED TO INCREASE.  
 
* ADDITIONAL DETAILS...SNOW MAY NOT BEGIN FALLING ON THE NORTH  
ASPECTS UNTIL FRIDAY.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
DO NOT GET CAUGHT UNPREPARED IN THE HIGH COUNTRY. SEVERE WINTER  
CONDITIONS ARE EXPECTED.  
 
 
 
 
 
MTZ171-WYZ198-142045-  
/O.CON.KBYZ.WS.W.0004.000000T0000Z-260315T1200Z/  
PRYOR/NORTHERN BIGHORN MOUNTAINS-NORTHEAST BIGHORN MOUNTAINS-  
INCLUDING THE LOCATIONS OF BURGESS JCT AND STORY  
234 PM MDT FRI MAR 13 2026  
   
..WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 AM MDT SUNDAY  
 
* WHAT...PROLONGED PERIODS OF SNOW EXPECTED. TOTAL SNOW ACCUMULATIONS  
BETWEEN 1 AND 2 FEET EXPECTED. WIND GUSTS UP TO 50 MPH.  
 
* WHERE...IN MONTANA, PRYOR/NORTHERN BIGHORN MOUNTAINS. IN WYOMING,  
NORTHEAST BIGHORN MOUNTAINS.  
 
* WHEN...UNTIL 6 AM MDT SUNDAY.  
 
* IMPACTS...RECREATION IN THE HIGH COUNTRY COULD BE SEVERELY IMPACTED  
BY HEAVY ACCUMULATING SNOW. TRAVEL COULD BE VERY DIFFICULT,  
INCLUDING ALONG US-14 THROUGH BURGESS JUNCTION. BLOWING SNOW COULD  
SIGNIFICANTLY REDUCE VISIBILITY.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
IF YOU MUST TRAVEL, KEEP AN EXTRA FLASHLIGHT, FOOD, AND WATER IN YOUR  
VEHICLE IN CASE OF AN EMERGENCY. FOR THE LATEST ROAD CONDITIONS, CALL  
5 1 1. RECREATION IN THE HIGH COUNTRY WILL BE IMPACTED BY HEAVY  
ACCUMULATING SNOW.  
 
 
 
 
 
MTZ056-066-170-142045-  
/O.CON.KBYZ.WW.Y.0012.260314T1200Z-260315T1200Z/  
RED LODGE FOOTHILLS-BEARTOOTH FOOTHILLS-NORTHERN CARBON-  
INCLUDING THE LOCATIONS OF ROBERTS, ROSCOE, FROMBERG, NYE, MCLEOD,  
FISHTAIL, JOLIET, AND RED LODGE  
234 PM MDT FRI MAR 13 2026  
 
...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 6 AM SATURDAY TO 6  
AM MDT SUNDAY...  
 
* WHAT...MIXED PRECIPITATION EXPECTED. TOTAL SNOW ACCUMULATIONS  
BETWEEN 3 AND 8 INCHES AND ICE ACCUMULATIONS AROUND A LIGHT GLAZE.  
WINDS GUSTING AS HIGH AS 45 MPH.  
 
* WHERE...BEARTOOTH FOOTHILLS, NORTHERN CARBON, AND RED LODGE  
FOOTHILLS.  
 
* WHEN...FROM 6 AM SATURDAY TO 6 AM MDT SUNDAY.  
 
* IMPACTS...TRAVEL COULD BE DIFFICULT. THE HAZARDOUS CONDITIONS COULD  
IMPACT THE FRIDAY EVENING COMMUTE.  
 
* ADDITIONAL DETAILS...WEST WINDS MAY KEEP THE COLDER AIR AND  
ACCUMULATING SNOWFALL OFF THE FOOTHILLS UNTIL LATE FRIDAY OR FRIDAY  
NIGHT. BEST CHANCE OF ACCUMULATING SNOWFALL IS SATURDAY THROUGH  
SATURDAY NIGHT. A PERIOD OF MIXED PRECIPITATION, INCLUDING  
FREEZING RAIN IS POSSIBLE THIS EVENING AND SATURDAY MORNING. THE  
MOST LIKELY AREAS TO BE IMPACTED WILL BE ALONG HIGHWAY 78 NORTH OF  
ROSCOE AND US-212 NORTH OF RED LODGE. SNOW IS EXPECTED TO MOVE IN  
SATURDAY.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
SLOW DOWN AND USE CAUTION WHILE TRAVELING. FOR THE LATEST ROAD  
CONDITIONS, CALL 5 1 1.  
 
 
 
 
 
ADDITIONAL GRAPHICS FOR THIS HAZARD CAN BE FOUND AT  
HTTP://WWW.WEATHER.GOV/BILLINGS  
 
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