* AFFECTED AREA...Fire Weather Zones 239, 240, 243, 244, 245,
248, 249, 250 and 251.

* TIMING...From 11 AM this morning to 7 PM MDT this evening.

* WINDS...Northwest 10 to 20 mph with gusts up to 30 mph.

* RELATIVE HUMIDITY...As low as 8 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.

WWUS85 KBOU 180936
RFWBOU

Red Flag Warning
National Weather Service Denver CO
336 AM MDT Wed Mar 18 2026
COZ239-240-243>245-248>251
/O.CON.KBOU.FW.W.0023.260318T1700Z-260319T0100Z/
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-Central and South Weld County-Morgan County-Central and East Adams and Arapahoe Counties-Logan County-Washington County-Sedgwick County-Phillips County

...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 7 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE NORTHERN AND NORTHEASTERN COLORADO PLAINS...

* AFFECTED AREA...Fire Weather Zones 239, 240, 243, 244, 245,
248, 249, 250 and 251.

* TIMING...From 11 AM this morning to 7 PM MDT this evening.

* WINDS...Northwest 10 to 20 mph with gusts up to 30 mph.

* RELATIVE HUMIDITY...As low as 8 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.
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.

Local Weather

Denver, Colorado, US
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