WWUS85 KBOU 191008 RFWBOU URGENT - FIRE WEATHER MESSAGE National Weather Service Denver/Boulder CO 408 AM MDT Thu Mar 19 2026 COZ238-242-192215- /O.CON.KBOU.FW.W.0024.260319T1700Z-260320T0100Z/ /O.CON.KBOU.FW.A.0020.260320T1700Z-260321T0100Z/ /O.CON.KBOU.FW.A.0021.260321T1700Z-260322T0300Z/ Larimer County Below 6000 Feet/Northwest Weld County- Northeast Weld County- 408 AM MDT Thu Mar 19 2026 ...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 7 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR AREAS NEAR THE CHEYENNE RIDGE...FIRE ZONES 238 AND 242... ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM FRIDAY MORNING THROUGH FRIDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR AREAS NEAR THE CHEYENNE RIDGE...FIRE ZONES 238 AND 242... ...FIRE WEATHER WATCH IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE NORTHEAST PLAINS...FIRE ZONES 238, 239, 240, 242, 243, 244, 245, 248, 249, 250 AND 251... * AFFECTED AREA...Fire Weather Zones 238 and 242. * TIMING...For the Red Flag Warning, from 11 AM this morning to 7 PM MDT this evening. For the first Fire Weather Watch, from Friday morning through Friday evening. For the second Fire Weather Watch, from Saturday morning through Saturday evening. * WINDS...Northwest 10 to 20 mph with gusts up to 30 mph today and again on Friday. For Saturday, west winds 15 to 25 mph with gusts to 40 mph. * RELATIVE HUMIDITY...As low as 7 percent all thre days. * 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. A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings. && $$ COZ239-240-243>245-248>251-192215- /O.CON.KBOU.FW.A.0021.260321T1700Z-260322T0300Z/ Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County- North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County- Central and South Weld County-Morgan County- Central and East Adams and Arapahoe Counties-Logan County- Washington County-Sedgwick County-Phillips County- 408 AM MDT Thu Mar 19 2026 ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE NORTHEAST PLAINS... * AFFECTED AREA...Fire Weather Zones 239, 240, 243, 244, 245, 248, 249, 250 and 251. * TIMING...From Saturday morning through Saturday evening. * WINDS...West 10 to 20 mph with gusts from 30 to 35 mph. * RELATIVE HUMIDITY...As low as 7 percent. * IMPACTS...Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings. && $$