346
WWUS85 KBOU 200640
RFWBOU
URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE DENVER/BOULDER CO
1240 AM MDT SAT JUN 20 2026
COZ211>214-217-218-210300-
/O.CON.KBOU.FW.W.0045.260620T1700Z-260621T0300Z/
JACKSON COUNTY BELOW 9000 FEET-
SOUTH AND SOUTHEAST GRAND/WEST CENTRAL AND SOUTHWEST BOULDER/
GILPIN/CLEAR CREEK/SUMMIT/NORTH AND WEST PARK COUNTIES ABOVE
9000 FEET-GRAND AND SUMMIT COUNTIES BELOW 9000 FEET-
CENTRAL AND SOUTHEAST PARK COUNTY-
WEST JACKSON AND WEST GRAND COUNTIES ABOVE 9000 FEET-
SOUTH AND EAST JACKSON/LARIMER/NORTH AND NORTHEAST GRAND/
NORTHWEST BOULDER COUNTIES ABOVE 9000 FEET-
1240 AM MDT SAT JUN 20 2026
...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO
9 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE
MOUNTAINS AND MOUNTAIN VALLEYS...
* AFFECTED AREA...FIRE WEATHER ZONES 211, 212, 213, 214, 217 AND
218.
* TIMING...FROM 11 AM THIS MORNING TO 9 PM MDT THIS EVENING.
* WINDS...WEST 15 TO 25 MPH WITH GUSTS UP TO 45 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.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page