WWUS85 KBOU 180156 RFWBOU URGENT - FIRE WEATHER MESSAGE National Weather Service Denver/Boulder CO 756 PM MDT Tue Mar 17 2026 COZ238-242>244-248>251-181300- /O.EXP.KBOU.FW.W.0022.000000T0000Z-260318T0200Z/ /O.CON.KBOU.FW.W.0023.260318T1700Z-260319T0100Z/ Larimer County Below 6000 Feet/Northwest Weld County- Northeast Weld County-Central and South Weld County-Morgan County- Logan County-Washington County-Sedgwick County-Phillips County- 756 PM MDT Tue Mar 17 2026 ...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM TO 7 PM MDT WEDNESDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR THE NORTHERN AND NORTHEAST COLORADO PLAINS...FIRE WEATHER ZONES 238, 242 THROUGH 244, AND 248 THROUGH 251... ...RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING FOR THE NORTHERN AND NORTHEAST COLORADO PLAINS...FIRE WEATHER ZONES 238, 242 THROUGH 244, AND 248 THROUGH 251... * AFFECTED AREA...Fire Weather Zones 238, 242, 243, 244, 248, 249, 250 and 251. * TIMING...From 11 AM to 7 PM MDT Wednesday. * 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. && $$ COZ239-240-245-181300- /O.CON.KBOU.FW.W.0023.260318T1700Z-260319T0100Z/ Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County- North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County- Central and East Adams and Arapahoe Counties- 756 PM MDT Tue Mar 17 2026 ...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM TO 7 PM MDT WEDNESDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR BOULDER AND DENVER METRO AREAS AND ADJACENT PLAINS THROUGH ADAMS AND ARAPAHOE COUNTIES, FIRE WEATHER ZONES 239, 240, AND 245... * AFFECTED AREA...Fire Weather Zones 239, 240 and 245. * TIMING...From 11 AM to 7 PM MDT Wednesday. * WINDS...West 10 to 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 11 percent. * IMPACTS...Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$