269  
WWUS85 KBYZ 032019  
RFWBYZ  
 
URGENT - FIRE WEATHER MESSAGE  
NATIONAL WEATHER SERVICE BILLINGS MT  
219 PM MDT THU SEP 3 2026  
 
MTZ129-WYZ284-042030-  
/O.NEW.KBYZ.FW.W.0011.260904T1500Z-260905T0300Z/  
/O.CON.KBYZ.FW.W.0010.000000T0000Z-260904T0300Z/  
CROW INDIAN RESERVATION/BIGHORN CANYON REC AREA-  
BIGHORN NATIONAL FOREST-  
219 PM MDT THU SEP 3 2026  
 
...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS  
EVENING...   
..RED FLAG WARNING IN EFFECT FROM 9 AM TO 9 PM MDT FRIDAY
 
 
THE NATIONAL WEATHER SERVICE IN BILLINGS HAS ISSUED A RED FLAG  
WARNING...WHICH IS IN EFFECT FROM 9 AM TO 9 PM MDT FRIDAY.  
 
* IMPACTS: LOW HUMIDITIES, UNSEASONABLY WARM TEMPERATURES, AND  
STRONG GUSTY WINDS WILL CREATE ERRATIC FIRE BEHAVIOR.  
 
* AFFECTED AREA:  
IN NORTH CENTRAL WY FIRE ZONE...284.  
IN SOUTH CENTRAL MT FIRE ZONE...129.  
 
* COUNTIES AFFECTED:  
IN NORTH CENTRAL WY...BIG HORN...JOHNSON...SHERIDAN...WASHAKIE.  
IN SOUTH CENTRAL MT...BIG HORN...CARBON...YELLOWSTONE.  
 
* WIND: SOUTH 10 TO 20 MPH WITH GUSTS 25 TO 35 MPH.  
 
* HUMIDITY: AS LOW AS 10 PERCENT.  
 
* ADDITIONAL DETAILS: THE WORST CONDITIONS ARE EXPECTED ACROSS THE  
LOWER ELEVATIONS.  
 
* TEMPERATURES: UP TO 96.  
 
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.  
 

 
 

 
 
MTZ131>133-WYZ274-042030-  
/O.UPG.KBYZ.FW.A.0007.260904T1800Z-260905T0300Z/  
/O.NEW.KBYZ.FW.W.0011.260904T1500Z-260905T0300Z/  
NORTHERN CHEYENNE INDIAN RESERVATION/ASHLAND RANGER DISTRICT  
CUSTER NATL FOREST-CUSTER COUNTY-  
SIOUX RANGER DISTRICT CUSTER NATIONAL FOREST-SHERIDAN COUNTY-  
219 PM MDT THU SEP 3 2026  
   
..RED FLAG WARNING IN EFFECT FROM 9 AM TO 9 PM MDT FRIDAY
 
 
THE NATIONAL WEATHER SERVICE IN BILLINGS HAS ISSUED A RED FLAG  
WARNING...WHICH IS IN EFFECT FROM 9 AM TO 9 PM MDT FRIDAY. THE  
FIRE WEATHER WATCH IS NO LONGER IN EFFECT.  
 
* IMPACTS: LOW HUMIDITIES, UNSEASONABLY WARM TEMPERATURES, AND  
STRONG GUSTY WINDS WILL CREATE ERRATIC FIRE BEHAVIOR.  
 
 
* AFFECTED AREA:  
IN NORTH CENTRAL WY FIRE ZONE...274.  
IN SOUTHEAST MT FIRE ZONES...131...132.  
IN SOUTHEAST MT AND NORTHWEST SD FIRE ZONE...133.  
 
* COUNTIES AFFECTED:  
IN NORTH CENTRAL WY...SHERIDAN.  
IN NORTHWEST SD...HARDING.  
IN SOUTH CENTRAL MT...BIG HORN.  
IN SOUTHEAST MT...CARTER...CUSTER...FALLON...POWDER RIVER  
ROSEBUD...TREASURE.  
 
* WIND: SOUTH 10 TO 20 MPH WITH GUSTS 25 TO 35 MPH.  
 
* HUMIDITY: AS LOW AS 10 PERCENT.  
 
* TEMPERATURES: IN THE 90S.  
 
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.  
 

 
 

 
 
MTZ123>128-130-040300-  
/O.CON.KBYZ.FW.W.0010.000000T0000Z-260904T0300Z/  
GALLATIN NATIONAL FOREST-WHEATLAND COUNTY/SWEET GRASS COUNTY-  
STILLWATER COUNTY-BEARTOOTH RANGER DISTRICT CUSTER NATIONAL FOREST-  
GOLDEN VALLEY COUNTY/MUSSELSHELL COUNTY-YELLOWSTONE COUNTY-  
NORTHERN ROSEBUD/NORTHERN TREASURE COUNTIES-  
219 PM MDT THU SEP 3 2026  
 
...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS  
EVENING...  
 
* 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...125...126...127  
128.  
IN SOUTHEAST MT FIRE ZONE...130.  
 
* COUNTIES AFFECTED:  
IN CENTRAL MT...GOLDEN VALLEY...MUSSELSHELL...WHEATLAND.  
IN SOUTH CENTRAL MT...CARBON...PARK...STILLWATER...SWEET GRASS  
YELLOWSTONE.  
IN SOUTHEAST MT...ROSEBUD...TREASURE.  
IN SOUTHWEST MT...GALLATIN.  
 
* WIND: SOUTHWEST 10 TO 20 MPH WITH GUSTS UP TO 35 MPH.  
 
* HUMIDITY: AS LOW AS 14 PERCENT.  
 
* ADDITIONAL DETAILS: FOR GALLATIN NATIONAL FOREST (MTZ123) AND  
BEARTOOTH RANGER DISTRICT (MTZ126), THE WORST CONDITIONS ARE  
EXPECTED ACROSS THE LOWER ELEVATIONS.  
 
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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