973  
WWUS85 KBYZ 091621  
RFWBYZ  
 
URGENT - FIRE WEATHER MESSAGE  
NATIONAL WEATHER SERVICE BILLINGS MT  
1021 AM MDT WED SEP 9 2026  
 
MTZ123-124-127-101630-  
/O.UPG.KBYZ.FW.A.0008.260910T1800Z-260911T0200Z/  
/O.NEW.KBYZ.FW.W.0012.260910T1800Z-260911T0200Z/  
GALLATIN NATIONAL FOREST-WHEATLAND COUNTY/SWEET GRASS COUNTY-  
GOLDEN VALLEY COUNTY/MUSSELSHELL COUNTY-  
1021 AM MDT WED SEP 9 2026  
   
..RED FLAG WARNING IN EFFECT FROM NOON TO 8 PM MDT THURSDAY
 
 
THE NATIONAL WEATHER SERVICE IN BILLINGS HAS UPGRADED THE FIRE  
WEATHER WATCH TO A RED FLAG WARNING...WHICH IS IN EFFECT FROM NOON  
TO 8 PM MDT THURSDAY.  
 
* IMPACTS: LOW HUMIDITIES, UNSEASONABLY WARM TEMPERATURES, AND  
STRONG GUSTY WINDS WILL CREATE ERRATIC FIRE BEHAVIOR.  
 
* AFFECTED AREA:  
IN SOUTH CENTRAL MT FIRE ZONES...123...124...127.  
 
* COUNTIES AFFECTED:  
IN CENTRAL MT...GOLDEN VALLEY...MUSSELSHELL...WHEATLAND.  
IN SOUTH CENTRAL MT...PARK...SWEET GRASS.  
IN SOUTHWEST MT...GALLATIN.  
 
* WIND: WEST 15 TO 25 MPH WITH GUSTS UP TO 40 MPH.  
 
* HUMIDITY: AS LOW AS 10 PERCENT.  
 
* TEMPERATURES: IN THE 80S.  
 
* ADDITIONAL DETAILS: THE WORST CONDITIONS ARE EXPECTED ACROSS  
LOWER ELEVATIONS THAT HAVE RECEIVED LITTLE PRECIPITATION IN THE  
PAST WEEK.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE  
EITHER OCCURRING NOW, OR WILL SHORTLY. A COMBINATION OF STRONG  
WINDS, LOW RELATIVE HUMIDITY, AND WARM TEMPERATURES CAN CONTRIBUTE  
TO EXTREME FIRE BEHAVIOR.  
 

 
 

 
 
MTZ133-101630-  
/O.NEW.KBYZ.FW.W.0012.260910T1800Z-260911T0200Z/  
SIOUX RANGER DISTRICT CUSTER NATIONAL FOREST-  
1021 AM MDT WED SEP 9 2026  
   
..RED FLAG WARNING IN EFFECT FROM NOON TO 8 PM MDT THURSDAY
 
 
THE NATIONAL WEATHER SERVICE IN BILLINGS HAS ISSUED A RED FLAG  
WARNING...WHICH IS IN EFFECT FROM NOON TO 8 PM MDT THURSDAY.  
 
* IMPACTS: LOW HUMIDITIES, UNSEASONABLY WARM TEMPERATURES, AND  
STRONG GUSTY WINDS WILL CREATE ERRATIC FIRE BEHAVIOR.  
 
* AFFECTED AREA:  
IN SOUTHEAST MT AND NORTHWEST SD FIRE ZONE...133.  
 
* COUNTIES AFFECTED:  
IN NORTHWEST SD...HARDING.  
IN SOUTHEAST MT...CARTER...FALLON.  
 
* WIND: WEST 10 TO 20 MPH WITH GUSTS UP TO 35 MPH.  
 
* HUMIDITY: AS LOW AS 12 PERCENT.  
 
* TEMPERATURES: UP TO 90.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE  
EITHER OCCURRING NOW, OR WILL SHORTLY. A COMBINATION OF STRONG  
WINDS, LOW RELATIVE HUMIDITY, AND WARM TEMPERATURES CAN CONTRIBUTE  
TO EXTREME FIRE BEHAVIOR.  
 

 
 

 
 
HTTP://WEATHER.GOV/BILLINGS  
 
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