425
WWUS85 KBYZ 221930
RFWBYZ
URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE BILLINGS MT
130 PM MDT WED APR 22 2026
MTZ130>133-230300-
/O.CON.KBYZ.FW.W.0002.000000T0000Z-260423T0300Z/
NORTHERN ROSEBUD/NORTHERN TREASURE COUNTIES-
NORTHERN CHEYENNE INDIAN RESERVATION/ASHLAND RANGER DISTRICT
CUSTER NATL FOREST-CUSTER COUNTY-
SIOUX RANGER DISTRICT CUSTER NATIONAL FOREST-
130 PM MDT WED APR 22 2026
...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS
EVENING...
* IMPACTS: LOW HUMIDITIES, UNSEASONABLY WARM TEMPERATURES, STRONG
GUSTY WINDS, AND WIND SHIFT WITH A COLD FRONT COULD CREATE
ERRATIC FIRE BEHAVIOR AND THE POTENTIAL FOR NEW FIRE STARTS.
* AFFECTED AREA: IN SOUTHEAST MT FIRE ZONES...130...131...132.
IN SOUTHEAST MT AND NORTHWEST SD FIRE ZONE...133.
* COUNTIES AFFECTED: IN NORTHWEST SD...HARDING. IN SOUTH
CENTRAL MT...BIG HORN. IN SOUTHEAST MT...CARTER...CUSTER...
FALLON...POWDER RIVER ROSEBUD...TREASURE.
* COLD FRONT: SOUTHWEST WINDS TODAY WILL SHIFT TO THE WEST THIS
EVENING, THEN NORTHWEST TONIGHT.
* SHOWER/THUNDERSTORM ACTIVITY: ISOLATED SHOWERS AND THUNDERSTORMS
THIS AFTERNOON AND EVENING MAY CAUSE GUSTY AND ERRATIC WINDS.
* WIND: SOUTHWEST 15 TO 30 MPH WITH GUSTS UP TO 45 MPH. LOCALLY
HIGHER GUSTS ARE POSSIBLE WITH SHOWER AND THUNDERSTORM ACTIVITY.
* HUMIDITY: AS LOW AS 9 PERCENT.
* TEMPERATURES: UP TO 87 DEGREES.
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.
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