WWUS85 KBOU 170816 RFWBOU URGENT - FIRE WEATHER MESSAGE National Weather Service Denver/Boulder CO 216 AM MDT Tue Mar 17 2026 COZ243-172030- /O.EXA.KBOU.FW.W.0022.260317T1600Z-260318T0200Z/ /O.EXA.KBOU.FW.A.0018.260318T1800Z-260319T0100Z/ Central and South Weld County- 216 AM MDT Tue Mar 17 2026 ...RED FLAG WARNING IN EFFECT FROM 10 AM THIS MORNING TO 8 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR CENTRAL AND SOUTHERN WELD COUNTY... ...FIRE WEATHER WATCH IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH WEDNESDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR CENTRAL AND SOUTHERN WELD COUNTY... The National Weather Service in Denver has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 10 AM this morning to 8 PM MDT this evening. A Fire Weather Watch has also been issued. This Fire Weather Watch for wind and low relative humidity is in effect from Wednesday afternoon through Wednesday evening. * AFFECTED AREA...Fire Weather Zone 243. * TIMING...For the Red Flag Warning, from 10 AM this morning to 8 PM MDT this evening. For the Fire Weather Watch, from Wednesday afternoon through Wednesday evening. * WINDS...Northwest 15 to 25 mph with gusts up to 40 mph. For the Fire Weather Watch, from Wednesday afternoon through Wednesday evening northwest 15 to 25 mph with gusts to 35 mph. * RELATIVE HUMIDITY...As low as 14 percent. On Wednesday, 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. A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings. && $$ COZ238-242-244-248>251-172030- /O.CON.KBOU.FW.W.0022.260317T1600Z-260318T0200Z/ /O.CON.KBOU.FW.A.0018.260318T1800Z-260319T0100Z/ Larimer County Below 6000 Feet/Northwest Weld County- Northeast Weld County-Morgan County-Logan County- Washington County-Sedgwick County-Phillips County- 216 AM MDT Tue Mar 17 2026 ...RED FLAG WARNING REMAINS IN EFFECT FROM 10 AM THIS MORNING TO 8 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE CHEYENNE RIDGE AND NORTHERN PLAINS... ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH WEDNESDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE CHEYENNE RIDGE AND NORTHERN PLAINS... * AFFECTED AREA...Fire Weather Zones 238, 242, 244, 248, 249, 250 and 251. * TIMING...For the Red Flag Warning, from 10 AM this morning to 8 PM MDT this evening. For the Fire Weather Watch, from Wednesday afternoon through Wednesday evening. * WINDS...Northwest 20 to 30 mph with gusts up to 45 mph. * RELATIVE HUMIDITY...As low as 14 percent. On Wednesday, as low as 11 percent. * IMPACTS...Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings. && $$