536
WWUS85 KBOU 231941
RFWBOU
URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DENVER/BOULDER CO
141 PM MDT THU APR 23 2026
COZ214-216-238>247-249-240345-
/O.UPG.KBOU.FW.A.0029.260424T1700Z-260425T0300Z/
/O.NEW.KBOU.FW.W.0039.260424T1700Z-260425T0200Z/
/O.CON.KBOU.FW.W.0038.000000T0000Z-260424T0100Z/
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-
WASHINGTON COUNTY-
141 PM MDT THU APR 23 2026
...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM MDT THIS EVENING
FOR WIND AND LOW RELATIVE HUMIDITY FOR SOUTH PARK AND SOUTHERN
LINCOLN COUNTY...
...RED FLAG WARNING IN EFFECT FROM 11 AM TO 8 PM MDT FRIDAY FOR
WIND AND LOW RELATIVE HUMIDITY FOR SOUTH PARK, SOUTHERN FRONT
RANGE FOOTHILLS, URBAN CORRIDOR AND PORTIONS OF THE PLAINS...
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 8 PM MDT FRIDAY. THE FIRE WEATHER WATCH IS NO
LONGER IN EFFECT.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 AND 249.
* TIMING...FOR THE FIRST RED FLAG WARNING, UNTIL 7 PM MDT THIS
EVENING. FOR THE SECOND RED FLAG WARNING, FROM 11 AM TO 8 PM
MDT FRIDAY.
* WINDS...WEST 15 TO 25 MPH WITH GUSTS UP TO 40 MPH. FOR THE
SECOND RED FLAG WARNING, WEST/SOUTHWEST WINDS GUSTING UP TO
35-40 MPH.
* RELATIVE HUMIDITY...AS LOW AS 8 PERCENT. FOR THE SECOND RED FLAG
WARNING, BETWEEN 7% AND 14%.
* 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.
COZ215-240345-
/O.UPG.KBOU.FW.A.0029.260424T1700Z-260425T0300Z/
/O.NEW.KBOU.FW.W.0039.260424T1700Z-260425T0200Z/
LARIMER AND BOULDER COUNTIES BETWEEN 6000 AND 9000 FEET-
141 PM MDT THU APR 23 2026
...RED FLAG WARNING IN EFFECT FROM 11 AM TO 8 PM MDT FRIDAY FOR
WIND AND LOW RELATIVE HUMIDITY FOR THE NORTHERN FRONT RANGE
FOOTHILLS...
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 8 PM MDT FRIDAY. THE FIRE WEATHER WATCH IS NO
LONGER IN EFFECT.
* AFFECTED AREA...FIRE WEATHER ZONE 215.
* TIMING...FROM 11 AM TO 8 PM MDT FRIDAY.
* WINDS...WEST 15 TO 25 MPH WITH GUSTS UP TO 40 MPH.
* RELATIVE HUMIDITY...AS LOW AS 12 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.
COZ248-250-251-240100-
/O.CON.KBOU.FW.W.0038.000000T0000Z-260424T0100Z/
LOGAN COUNTY-SEDGWICK COUNTY-PHILLIPS COUNTY-
141 PM MDT THU APR 23 2026
...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM MDT THIS EVENING
FOR WIND AND LOW RELATIVE HUMIDITY FOR THE FAR NORTHEAST PLAINS...
* AFFECTED AREA...FIRE WEATHER ZONES 248, 250 AND 251.
* TIMING...UNTIL 7 PM MDT THIS EVENING.
* WINDS...NORTHWEST 20 TO 30 MPH WITH GUSTS UP TO 45 MPH.
* RELATIVE HUMIDITY...AS LOW AS 15 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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