Red Flag Warning Colorado, Wyoming | Effective 03/21/2026 04:42

Headline: 
Red Flag Warning issued March 21 at 5:42AM MDT until March 21 at 10:00PM MDT by NWS Denver CO
Event: 
Red Flag Warning
Urgency: 
Expected
Effective: 
March 21, 2026 - 4:42am
Expires: 
March 21, 2026 - 9:00pm
Description: 
...WIDESPREAD CRITICAL FIRE WEATHER CONDITIONS TODAY... All-time record March heat, exceptionally low humidity, and periods of breezy winds will drive critical fire weather conditions this afternoon, most pronounced above 6,000 ft and west of I-25 where winds will be strongest. * AFFECTED AREA...Fire Weather Zones 214, 215 and 216. * TIMING...From 11 AM this morning to 10 PM MDT this evening. * WINDS...West 15 to 20 mph with gusts 35 to 40 mph. * RELATIVE HUMIDITY...4 to 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.
Instruction: 
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.
Area Description: 
Central and Southeast Park County; Larimer and Boulder Counties Between 6000 and 9000 Feet; Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below 9000 Feet
Forcast Office: 
NWS Denver CO