579
WWUS85 KBOU 221822
RFWBOU
URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DENVER/BOULDER CO
1222 PM MDT WED APR 22 2026
COZ214-216-238>251-230230-
/O.UPG.KBOU.FW.A.0028.260423T1600Z-260424T0200Z/
/O.NEW.KBOU.FW.W.0038.260423T1700Z-260424T0100Z/
/O.CON.KBOU.FW.W.0037.000000T0000Z-260423T0600Z/
CENTRAL AND SOUTHEAST PARK COUNTY-
JEFFERSON AND WEST DOUGLAS COUNTIES ABOVE 6000 FEET/GILPIN/CLEAR
CREEK/NORTHEAST PARK COUNTIES BELOW 9000 FEET-
LARIMER COUNTY BELOW 6000 FEET/NORTHWEST WELD COUNTY-
BOULDER AND JEFFERSON COUNTIES BELOW 6000 FEET/WEST BROOMFIELD
COUNTY-
NORTH DOUGLAS COUNTY BELOW 6000 FEET/DENVER/WEST ADAMS AND
ARAPAHOE COUNTIES/EAST BROOMFIELD COUNTY-
ELBERT/CENTRAL AND EAST DOUGLAS COUNTIES ABOVE 6000 FEET-
NORTHEAST WELD COUNTY-CENTRAL AND SOUTH WELD COUNTY-MORGAN COUNTY-
CENTRAL AND EAST ADAMS AND ARAPAHOE COUNTIES-
NORTH AND NORTHEAST ELBERT COUNTY BELOW 6000 FEET/NORTH LINCOLN
COUNTY-
SOUTHEAST ELBERT COUNTY BELOW 6000 FEET/SOUTH LINCOLN COUNTY-
LOGAN COUNTY-WASHINGTON COUNTY-SEDGWICK COUNTY-PHILLIPS COUNTY-
1222 PM MDT WED APR 22 2026
...RED FLAG WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MDT TONIGHT
FOR WIND AND LOW RELATIVE HUMIDITY FOR THE FRONT RANGE FOOTHILLS,
URBAN CORRIDOR, PLAINS, AND SOUTH PARK...
...RED FLAG WARNING IN EFFECT FROM 11 AM TO 7 PM MDT THURSDAY FOR
WIND AND LOW RELATIVE HUMIDITY FOR THE SOUTHERN FRONT RANGE
FOOTHILLS, URBAN CORRIDOR, PLAINS, AND SOUTH PARK...
THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A RED FLAG
WARNING FOR WIND AND LOW RELATIVE HUMIDITY, WHICH IS IN EFFECT
FROM 11 AM TO 7 PM MDT THURSDAY. THE FIRE WEATHER WATCH IS NO
LONGER IN EFFECT.
* AFFECTED AREA...FIRE WEATHER ZONES 214, 216, 238, 239, 240,
241, 242, 243, 244, 245, 246, 247, 248, 249, 250 AND 251.
* TIMING...FOR THE FIRST RED FLAG WARNING, UNTIL MIDNIGHT MDT
TONIGHT. FOR THE SECOND RED FLAG WARNING, FROM 11 AM TO 7 PM
MDT THURSDAY.
* WINDS...WEST 20 TO 30 MPH WITH GUSTS UP TO 45 MPH. FOR THE
SECOND RED FLAG WARNING, NORTHWEST WINDS GUSTING UP TO 50 MPH.
* RELATIVE HUMIDITY...AS LOW AS 6 PERCENT. FOR THE SECOND RED FLAG
WARNING, AS LOW AS 10 PERCENT.
* IMPACTS...CONDITIONS WILL BE FAVORABLE FOR RAPID FIRE SPREAD.
AVOID OUTDOOR BURNING AND ANY ACTIVITY THAT MAY PRODUCE A
SPARK AND START A WILDFIRE.
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.
COZ215-230230-
/O.CON.KBOU.FW.W.0037.000000T0000Z-260423T0600Z/
LARIMER AND BOULDER COUNTIES BETWEEN 6000 AND 9000 FEET-
1222 PM MDT WED APR 22 2026
...RED FLAG WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MDT TONIGHT
FOR WIND AND LOW RELATIVE HUMIDITY FOR THE FRONT RANGE FOOTHILLS,
URBAN CORRIDOR, PLAINS, AND SOUTH PARK...
* AFFECTED AREA...FIRE WEATHER ZONE 215.
* TIMING...UNTIL MIDNIGHT MDT TONIGHT.
* WINDS...WEST 20 TO 30 MPH WITH GUSTS UP TO 50 MPH.
* RELATIVE HUMIDITY...AS LOW AS 9 PERCENT.
* IMPACTS...CONDITIONS WILL BE FAVORABLE FOR RAPID FIRE SPREAD.
AVOID OUTDOOR BURNING AND ANY ACTIVITY THAT MAY PRODUCE A
SPARK AND START A WILDFIRE.
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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