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Home Return to list Fire Weather Watch 0021 Issued by the Denver / Boulder Forecast Office
Action: New Issued At: 2026-03-19 03:16:16 829 WWUS85 KBOU 190816 RFWBOU URGENT - FIRE WEATHER MESSAGE National Weather Service Denver/Boulder CO 216 AM MDT Thu Mar 19 2026 COZ238-242-192330- /O.NEW.KBOU.FW.A.0020.260320T1700Z-260321T0100Z/ /O.NEW.KBOU.FW.A.0021.260321T1700Z-260322T0300Z/ /O.CON.KBOU.FW.W.0024.260319T1700Z-260320T0100Z/ Larimer County Below 6000 Feet/Northwest Weld County- Northeast Weld County- 216 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 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. The National Weather Service in Denver has issued a Fire Weather Watch for wind and low relative humidity, which is in effect from Friday morning through Friday evening. A Fire Weather Watch has also been issued from Saturday morning through Saturday evening. * 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...West 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 three 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. && $$ COZ239-240-243>245-248>251-192330- /O.NEW.KBOU.FW.A.0021.260321T1700Z-260322T0300Z/ Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County- North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County- Central and South Weld County-Morgan County- Central and East Adams and Arapahoe Counties-Logan County- Washington County-Sedgwick County-Phillips County- 216 AM MDT Thu Mar 19 2026 ...FIRE WEATHER WATCH IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE NORTHEAST PLAINS... The National Weather Service in Denver has issued a Fire Weather Watch for wind and low relative humidity, which is in effect from Saturday morning through Saturday evening. * AFFECTED AREA...Fire Weather Zones 239, 240, 243, 244, 245, 248, 249, 250 and 251. * TIMING...From Saturday morning through Saturday evening. * WINDS...West 10 to 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 7 percent. * IMPACTS...Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings. && $$ Action: New Issued At: 2026-03-19 03:16:16 829 WWUS85 KBOU 190816 RFWBOU URGENT - FIRE WEATHER MESSAGE National Weather Service Denver/Boulder CO 216 AM MDT Thu Mar 19 2026 COZ238-242-192330- /O.NEW.KBOU.FW.A.0020.260320T1700Z-260321T0100Z/ /O.NEW.KBOU.FW.A.0021.260321T1700Z-260322T0300Z/ /O.CON.KBOU.FW.W.0024.260319T1700Z-260320T0100Z/ Larimer County Below 6000 Feet/Northwest Weld County- Northeast Weld County- 216 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 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. The National Weather Service in Denver has issued a Fire Weather Watch for wind and low relative humidity, which is in effect from Friday morning through Friday evening. A Fire Weather Watch has also been issued from Saturday morning through Saturday evening. * 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...West 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 three 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. && $$ COZ239-240-243>245-248>251-192330- /O.NEW.KBOU.FW.A.0021.260321T1700Z-260322T0300Z/ Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County- North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County- Central and South Weld County-Morgan County- Central and East Adams and Arapahoe Counties-Logan County- Washington County-Sedgwick County-Phillips County- 216 AM MDT Thu Mar 19 2026 ...FIRE WEATHER WATCH IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE NORTHEAST PLAINS... The National Weather Service in Denver has issued a Fire Weather Watch for wind and low relative humidity, which is in effect from Saturday morning through Saturday evening. * AFFECTED AREA...Fire Weather Zones 239, 240, 243, 244, 245, 248, 249, 250 and 251. * TIMING...From Saturday morning through Saturday evening. * WINDS...West 10 to 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 7 percent. * IMPACTS...Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings. && $$ Action: Continued Issued At: 2026-03-19 05:08:36 743 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. && $$ COZ239-240-243>245-248>251-192215- /O.CON.KBOU.FW.A.0021.260321T1700Z-260322T0300Z/ Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County- North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County- Central and South Weld County-Morgan County- Central and East Adams and Arapahoe Counties-Logan County- Washington County-Sedgwick County-Phillips County- 408 AM MDT Thu Mar 19 2026 ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE NORTHEAST PLAINS... * AFFECTED AREA...Fire Weather Zones 239, 240, 243, 244, 245, 248, 249, 250 and 251. * TIMING...From Saturday morning through Saturday evening. * WINDS...West 10 to 20 mph with gusts from 30 to 35 mph. * RELATIVE HUMIDITY...As low as 7 percent. * IMPACTS...Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings. && $$ Action: Continued Issued At: 2026-03-19 05:08:36 743 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. && $$ COZ239-240-243>245-248>251-192215- /O.CON.KBOU.FW.A.0021.260321T1700Z-260322T0300Z/ Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County- North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County- Central and South Weld County-Morgan County- Central and East Adams and Arapahoe Counties-Logan County- Washington County-Sedgwick County-Phillips County- 408 AM MDT Thu Mar 19 2026 ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE NORTHEAST PLAINS... * AFFECTED AREA...Fire Weather Zones 239, 240, 243, 244, 245, 248, 249, 250 and 251. * TIMING...From Saturday morning through Saturday evening. * WINDS...West 10 to 20 mph with gusts from 30 to 35 mph. * RELATIVE HUMIDITY...As low as 7 percent. * IMPACTS...Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings. && $$ Action: Time and Area Extended Issued At: 2026-03-19 14:57:54 985 WWUS85 KBOU 191957 RFWBOU URGENT - FIRE WEATHER MESSAGE National Weather Service Denver/Boulder CO 157 PM MDT Thu Mar 19 2026 A prolonged period of record warmth and very low humidity will bring elevated to critical fire weather conditions for much of northeast and north central Colorado through Saturday. The most widespread critical conditions are expected to develop Saturday afternoon and hold into Saturday evening. COZ238-242-200400- /O.UPG.KBOU.FW.A.0020.260320T1700Z-260321T0100Z/ /O.NEW.KBOU.FW.W.0026.260320T1700Z-260321T0100Z/ /O.EXT.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ /O.CON.KBOU.FW.W.0024.000000T0000Z-260320T0100Z/ Larimer County Below 6000 Feet/Northwest Weld County- Northeast Weld County- 157 PM MDT Thu Mar 19 2026 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE CHEYENNE RIDGE AREA AND PAWNEE NATIONAL GRASSLANDS... ...RED FLAG WARNING IN EFFECT FROM 11 AM TO 7 PM MDT FRIDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR THE CHEYENNE RIDGE AREA AND PAWNEE NATIONAL GRASSLANDS... ...FIRE WEATHER WATCH NOW IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR MUCH OF NORTHEAST AND NORTH CENTRAL COLORADO IN ELEVATIONS BELOW 9,000 FEET. The National Weather Service in Denver has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 11 AM to 7 PM MDT Friday. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Fire Weather Zones 238 and 242. * TIMING...For the first Red Flag Warning, until 7 PM MDT this evening. For the second Red Flag Warning, from 11 AM to 7 PM MDT Friday. For the Fire Weather Watch, from Saturday morning through Saturday evening. * WINDS...West 10 to 20 mph with gusts up to 35 mph, with the strongest winds on Saturday. * RELATIVE HUMIDITY...As low as 6 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. && $$ COZ241-200400- /O.EXB.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ Elbert/Central and East Douglas Counties Above 6000 Feet- 157 PM MDT Thu Mar 19 2026 ...FIRE WEATHER WATCH IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE PALMER DIVIDE AREA... The National Weather Service in Denver has issued a Fire Weather Watch for wind and low relative humidity, which is in effect from Saturday morning through Saturday evening. * AFFECTED AREA...Fire Weather Zone 241. * TIMING...From Saturday morning through Saturday evening. * WINDS...West 10 TO 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 5 percent. * IMPACTS...Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings. && $$ COZ214>216-200400- /O.EXB.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ 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- 157 PM MDT Thu Mar 19 2026 ...FIRE WEATHER WATCH IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE FRONT RANGE FOOTHILLS AND SOUTH PARK... The National Weather Service in Denver has issued a Fire Weather Watch for wind and low relative humidity, which is in effect from Saturday morning through Saturday evening. * AFFECTED AREA...Fire Weather Zones 214, 215 and 216. * TIMING...From Saturday morning through Saturday evening. * WINDS...West 15 to 25 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 6 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. && $$ COZ211-213-200400- /O.EXB.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ Jackson County Below 9000 Feet- Grand and Summit Counties Below 9000 Feet- 157 PM MDT Thu Mar 19 2026 ...FIRE WEATHER WATCH IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE HIGH MOUNTAIN VALLEYS OF GRAND AND JACKSON COUNTIES... The National Weather Service in Denver has issued a Fire Weather Watch for wind and low relative humidity, which is in effect from Saturday morning through Saturday evening. * AFFECTED AREA...Fire Weather Zones 211 and 213. * TIMING...From Saturday morning through Saturday evening. * WINDS...West 15 to 25 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 11 percent. * IMPACTS...Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings. && $$ COZ239-240-243>245-248>251-200400- /O.EXT.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ 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- 157 PM MDT Thu Mar 19 2026 ...FIRE WEATHER WATCH NOW IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE NORTHEAST PLAINS OF COLORADO AND I-25 URBAN CORRIDOR... * 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 up to 30 mph. * RELATIVE HUMIDITY...4 to 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. && $$ Action: Time Extended Issued At: 2026-03-19 14:57:54 985 WWUS85 KBOU 191957 RFWBOU URGENT - FIRE WEATHER MESSAGE National Weather Service Denver/Boulder CO 157 PM MDT Thu Mar 19 2026 A prolonged period of record warmth and very low humidity will bring elevated to critical fire weather conditions for much of northeast and north central Colorado through Saturday. The most widespread critical conditions are expected to develop Saturday afternoon and hold into Saturday evening. COZ238-242-200400- /O.UPG.KBOU.FW.A.0020.260320T1700Z-260321T0100Z/ /O.NEW.KBOU.FW.W.0026.260320T1700Z-260321T0100Z/ /O.EXT.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ /O.CON.KBOU.FW.W.0024.000000T0000Z-260320T0100Z/ Larimer County Below 6000 Feet/Northwest Weld County- Northeast Weld County- 157 PM MDT Thu Mar 19 2026 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE CHEYENNE RIDGE AREA AND PAWNEE NATIONAL GRASSLANDS... ...RED FLAG WARNING IN EFFECT FROM 11 AM TO 7 PM MDT FRIDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR THE CHEYENNE RIDGE AREA AND PAWNEE NATIONAL GRASSLANDS... ...FIRE WEATHER WATCH NOW IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR MUCH OF NORTHEAST AND NORTH CENTRAL COLORADO IN ELEVATIONS BELOW 9,000 FEET. The National Weather Service in Denver has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 11 AM to 7 PM MDT Friday. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Fire Weather Zones 238 and 242. * TIMING...For the first Red Flag Warning, until 7 PM MDT this evening. For the second Red Flag Warning, from 11 AM to 7 PM MDT Friday. For the Fire Weather Watch, from Saturday morning through Saturday evening. * WINDS...West 10 to 20 mph with gusts up to 35 mph, with the strongest winds on Saturday. * RELATIVE HUMIDITY...As low as 6 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. && $$ COZ241-200400- /O.EXB.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ Elbert/Central and East Douglas Counties Above 6000 Feet- 157 PM MDT Thu Mar 19 2026 ...FIRE WEATHER WATCH IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE PALMER DIVIDE AREA... The National Weather Service in Denver has issued a Fire Weather Watch for wind and low relative humidity, which is in effect from Saturday morning through Saturday evening. * AFFECTED AREA...Fire Weather Zone 241. * TIMING...From Saturday morning through Saturday evening. * WINDS...West 10 TO 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 5 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. && $$ COZ214>216-200400- /O.EXB.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ Central and Southeast Park County- Larimer and Boulder Counties Between 6000 and 9000 Feet- Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below 9000 Feet- 157 PM MDT Thu Mar 19 2026 ...FIRE WEATHER WATCH IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE FRONT RANGE FOOTHILLS AND SOUTH PARK... The National Weather Service in Denver has issued a Fire Weather Watch for wind and low relative humidity, which is in effect from Saturday morning through Saturday evening. * AFFECTED AREA...Fire Weather Zones 214, 215 and 216. * TIMING...From Saturday morning through Saturday evening. * WINDS...West 15 to 25 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 6 percent. * IMPACTS...Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings. && $$ COZ211-213-200400- /O.EXB.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ Jackson County Below 9000 Feet- Grand and Summit Counties Below 9000 Feet- 157 PM MDT Thu Mar 19 2026 ...FIRE WEATHER WATCH IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE HIGH MOUNTAIN VALLEYS OF GRAND AND JACKSON COUNTIES... The National Weather Service in Denver has issued a Fire Weather Watch for wind and low relative humidity, which is in effect from Saturday morning through Saturday evening. * AFFECTED AREA...Fire Weather Zones 211 and 213. * TIMING...From Saturday morning through Saturday evening. * WINDS...West 15 to 25 mph with gusts up to 35 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 Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings. && $$ COZ239-240-243>245-248>251-200400- /O.EXT.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County- North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County- Central and South Weld County-Morgan County- Central and East Adams and Arapahoe Counties-Logan County- Washington County-Sedgwick County-Phillips County- 157 PM MDT Thu Mar 19 2026 ...FIRE WEATHER WATCH NOW IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE NORTHEAST PLAINS OF COLORADO AND I-25 URBAN CORRIDOR... * AFFECTED AREA...Fire Weather Zones 239, 240, 243, 244, 245, 248, 249, 250 and 251. * TIMING...From Saturday morning through Saturday evening. * WINDS...West 10 to 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...4 to 7 percent. * IMPACTS...Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings. && $$ Action: Time and Area Extended Issued At: 2026-03-19 14:57:54 985 WWUS85 KBOU 191957 RFWBOU URGENT - FIRE WEATHER MESSAGE National Weather Service Denver/Boulder CO 157 PM MDT Thu Mar 19 2026 A prolonged period of record warmth and very low humidity will bring elevated to critical fire weather conditions for much of northeast and north central Colorado through Saturday. The most widespread critical conditions are expected to develop Saturday afternoon and hold into Saturday evening. COZ238-242-200400- /O.UPG.KBOU.FW.A.0020.260320T1700Z-260321T0100Z/ /O.NEW.KBOU.FW.W.0026.260320T1700Z-260321T0100Z/ /O.EXT.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ /O.CON.KBOU.FW.W.0024.000000T0000Z-260320T0100Z/ Larimer County Below 6000 Feet/Northwest Weld County- Northeast Weld County- 157 PM MDT Thu Mar 19 2026 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE CHEYENNE RIDGE AREA AND PAWNEE NATIONAL GRASSLANDS... ...RED FLAG WARNING IN EFFECT FROM 11 AM TO 7 PM MDT FRIDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR THE CHEYENNE RIDGE AREA AND PAWNEE NATIONAL GRASSLANDS... ...FIRE WEATHER WATCH NOW IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR MUCH OF NORTHEAST AND NORTH CENTRAL COLORADO IN ELEVATIONS BELOW 9,000 FEET. The National Weather Service in Denver has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 11 AM to 7 PM MDT Friday. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Fire Weather Zones 238 and 242. * TIMING...For the first Red Flag Warning, until 7 PM MDT this evening. For the second Red Flag Warning, from 11 AM to 7 PM MDT Friday. For the Fire Weather Watch, from Saturday morning through Saturday evening. * WINDS...West 10 to 20 mph with gusts up to 35 mph, with the strongest winds on Saturday. * RELATIVE HUMIDITY...As low as 6 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. && $$ COZ241-200400- /O.EXB.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ Elbert/Central and East Douglas Counties Above 6000 Feet- 157 PM MDT Thu Mar 19 2026 ...FIRE WEATHER WATCH IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE PALMER DIVIDE AREA... The National Weather Service in Denver has issued a Fire Weather Watch for wind and low relative humidity, which is in effect from Saturday morning through Saturday evening. * AFFECTED AREA...Fire Weather Zone 241. * TIMING...From Saturday morning through Saturday evening. * WINDS...West 10 TO 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 5 percent. * IMPACTS...Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings. && $$ COZ214>216-200400- /O.EXB.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ 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- 157 PM MDT Thu Mar 19 2026 ...FIRE WEATHER WATCH IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE FRONT RANGE FOOTHILLS AND SOUTH PARK... The National Weather Service in Denver has issued a Fire Weather Watch for wind and low relative humidity, which is in effect from Saturday morning through Saturday evening. * AFFECTED AREA...Fire Weather Zones 214, 215 and 216. * TIMING...From Saturday morning through Saturday evening. * WINDS...West 15 to 25 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 6 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. && $$ COZ211-213-200400- /O.EXB.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ Jackson County Below 9000 Feet- Grand and Summit Counties Below 9000 Feet- 157 PM MDT Thu Mar 19 2026 ...FIRE WEATHER WATCH IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE HIGH MOUNTAIN VALLEYS OF GRAND AND JACKSON COUNTIES... The National Weather Service in Denver has issued a Fire Weather Watch for wind and low relative humidity, which is in effect from Saturday morning through Saturday evening. * AFFECTED AREA...Fire Weather Zones 211 and 213. * TIMING...From Saturday morning through Saturday evening. * WINDS...West 15 to 25 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 11 percent. * IMPACTS...Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings. && $$ COZ239-240-243>245-248>251-200400- /O.EXT.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ 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- 157 PM MDT Thu Mar 19 2026 ...FIRE WEATHER WATCH NOW IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE NORTHEAST PLAINS OF COLORADO AND I-25 URBAN CORRIDOR... * 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 up to 30 mph. * RELATIVE HUMIDITY...4 to 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. && $$ Action: Time and Area Extended Issued At: 2026-03-19 14:57:54 985 WWUS85 KBOU 191957 RFWBOU URGENT - FIRE WEATHER MESSAGE National Weather Service Denver/Boulder CO 157 PM MDT Thu Mar 19 2026 A prolonged period of record warmth and very low humidity will bring elevated to critical fire weather conditions for much of northeast and north central Colorado through Saturday. The most widespread critical conditions are expected to develop Saturday afternoon and hold into Saturday evening. COZ238-242-200400- /O.UPG.KBOU.FW.A.0020.260320T1700Z-260321T0100Z/ /O.NEW.KBOU.FW.W.0026.260320T1700Z-260321T0100Z/ /O.EXT.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ /O.CON.KBOU.FW.W.0024.000000T0000Z-260320T0100Z/ Larimer County Below 6000 Feet/Northwest Weld County- Northeast Weld County- 157 PM MDT Thu Mar 19 2026 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE CHEYENNE RIDGE AREA AND PAWNEE NATIONAL GRASSLANDS... ...RED FLAG WARNING IN EFFECT FROM 11 AM TO 7 PM MDT FRIDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR THE CHEYENNE RIDGE AREA AND PAWNEE NATIONAL GRASSLANDS... ...FIRE WEATHER WATCH NOW IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR MUCH OF NORTHEAST AND NORTH CENTRAL COLORADO IN ELEVATIONS BELOW 9,000 FEET. The National Weather Service in Denver has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 11 AM to 7 PM MDT Friday. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Fire Weather Zones 238 and 242. * TIMING...For the first Red Flag Warning, until 7 PM MDT this evening. For the second Red Flag Warning, from 11 AM to 7 PM MDT Friday. For the Fire Weather Watch, from Saturday morning through Saturday evening. * WINDS...West 10 to 20 mph with gusts up to 35 mph, with the strongest winds on Saturday. * RELATIVE HUMIDITY...As low as 6 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. && $$ COZ241-200400- /O.EXB.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ Elbert/Central and East Douglas Counties Above 6000 Feet- 157 PM MDT Thu Mar 19 2026 ...FIRE WEATHER WATCH IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE PALMER DIVIDE AREA... The National Weather Service in Denver has issued a Fire Weather Watch for wind and low relative humidity, which is in effect from Saturday morning through Saturday evening. * AFFECTED AREA...Fire Weather Zone 241. * TIMING...From Saturday morning through Saturday evening. * WINDS...West 10 TO 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 5 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. && $$ COZ214>216-200400- /O.EXB.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ Central and Southeast Park County- Larimer and Boulder Counties Between 6000 and 9000 Feet- Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below 9000 Feet- 157 PM MDT Thu Mar 19 2026 ...FIRE WEATHER WATCH IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE FRONT RANGE FOOTHILLS AND SOUTH PARK... The National Weather Service in Denver has issued a Fire Weather Watch for wind and low relative humidity, which is in effect from Saturday morning through Saturday evening. * AFFECTED AREA...Fire Weather Zones 214, 215 and 216. * TIMING...From Saturday morning through Saturday evening. * WINDS...West 15 to 25 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 6 percent. * IMPACTS...Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings. && $$ COZ211-213-200400- /O.EXB.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ Jackson County Below 9000 Feet- Grand and Summit Counties Below 9000 Feet- 157 PM MDT Thu Mar 19 2026 ...FIRE WEATHER WATCH IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE HIGH MOUNTAIN VALLEYS OF GRAND AND JACKSON COUNTIES... The National Weather Service in Denver has issued a Fire Weather Watch for wind and low relative humidity, which is in effect from Saturday morning through Saturday evening. * AFFECTED AREA...Fire Weather Zones 211 and 213. * TIMING...From Saturday morning through Saturday evening. * WINDS...West 15 to 25 mph with gusts up to 35 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 Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings. && $$ COZ239-240-243>245-248>251-200400- /O.EXT.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County- North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County- Central and South Weld County-Morgan County- Central and East Adams and Arapahoe Counties-Logan County- Washington County-Sedgwick County-Phillips County- 157 PM MDT Thu Mar 19 2026 ...FIRE WEATHER WATCH NOW IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE NORTHEAST PLAINS OF COLORADO AND I-25 URBAN CORRIDOR... * AFFECTED AREA...Fire Weather Zones 239, 240, 243, 244, 245, 248, 249, 250 and 251. * TIMING...From Saturday morning through Saturday evening. * WINDS...West 10 to 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...4 to 7 percent. * IMPACTS...Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings. && $$ Action: Time Extended Issued At: 2026-03-19 14:57:54 985 WWUS85 KBOU 191957 RFWBOU URGENT - FIRE WEATHER MESSAGE National Weather Service Denver/Boulder CO 157 PM MDT Thu Mar 19 2026 A prolonged period of record warmth and very low humidity will bring elevated to critical fire weather conditions for much of northeast and north central Colorado through Saturday. The most widespread critical conditions are expected to develop Saturday afternoon and hold into Saturday evening. COZ238-242-200400- /O.UPG.KBOU.FW.A.0020.260320T1700Z-260321T0100Z/ /O.NEW.KBOU.FW.W.0026.260320T1700Z-260321T0100Z/ /O.EXT.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ /O.CON.KBOU.FW.W.0024.000000T0000Z-260320T0100Z/ Larimer County Below 6000 Feet/Northwest Weld County- Northeast Weld County- 157 PM MDT Thu Mar 19 2026 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE CHEYENNE RIDGE AREA AND PAWNEE NATIONAL GRASSLANDS... ...RED FLAG WARNING IN EFFECT FROM 11 AM TO 7 PM MDT FRIDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR THE CHEYENNE RIDGE AREA AND PAWNEE NATIONAL GRASSLANDS... ...FIRE WEATHER WATCH NOW IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR MUCH OF NORTHEAST AND NORTH CENTRAL COLORADO IN ELEVATIONS BELOW 9,000 FEET. The National Weather Service in Denver has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 11 AM to 7 PM MDT Friday. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Fire Weather Zones 238 and 242. * TIMING...For the first Red Flag Warning, until 7 PM MDT this evening. For the second Red Flag Warning, from 11 AM to 7 PM MDT Friday. For the Fire Weather Watch, from Saturday morning through Saturday evening. * WINDS...West 10 to 20 mph with gusts up to 35 mph, with the strongest winds on Saturday. * RELATIVE HUMIDITY...As low as 6 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. && $$ COZ241-200400- /O.EXB.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ Elbert/Central and East Douglas Counties Above 6000 Feet- 157 PM MDT Thu Mar 19 2026 ...FIRE WEATHER WATCH IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE PALMER DIVIDE AREA... The National Weather Service in Denver has issued a Fire Weather Watch for wind and low relative humidity, which is in effect from Saturday morning through Saturday evening. * AFFECTED AREA...Fire Weather Zone 241. * TIMING...From Saturday morning through Saturday evening. * WINDS...West 10 TO 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 5 percent. * IMPACTS...Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings. && $$ COZ214>216-200400- /O.EXB.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ 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- 157 PM MDT Thu Mar 19 2026 ...FIRE WEATHER WATCH IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE FRONT RANGE FOOTHILLS AND SOUTH PARK... The National Weather Service in Denver has issued a Fire Weather Watch for wind and low relative humidity, which is in effect from Saturday morning through Saturday evening. * AFFECTED AREA...Fire Weather Zones 214, 215 and 216. * TIMING...From Saturday morning through Saturday evening. * WINDS...West 15 to 25 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 6 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. && $$ COZ211-213-200400- /O.EXB.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ Jackson County Below 9000 Feet- Grand and Summit Counties Below 9000 Feet- 157 PM MDT Thu Mar 19 2026 ...FIRE WEATHER WATCH IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE HIGH MOUNTAIN VALLEYS OF GRAND AND JACKSON COUNTIES... The National Weather Service in Denver has issued a Fire Weather Watch for wind and low relative humidity, which is in effect from Saturday morning through Saturday evening. * AFFECTED AREA...Fire Weather Zones 211 and 213. * TIMING...From Saturday morning through Saturday evening. * WINDS...West 15 to 25 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 11 percent. * IMPACTS...Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings. && $$ COZ239-240-243>245-248>251-200400- /O.EXT.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ 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- 157 PM MDT Thu Mar 19 2026 ...FIRE WEATHER WATCH NOW IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE NORTHEAST PLAINS OF COLORADO AND I-25 URBAN CORRIDOR... * 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 up to 30 mph. * RELATIVE HUMIDITY...4 to 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. && $$ Action: Continued Issued At: 2026-03-19 20:00:33 576 WWUS85 KBOU 200059 RFWBOU URGENT - FIRE WEATHER MESSAGE National Weather Service Denver/Boulder CO 659 PM MDT Thu Mar 19 2026 A prolonged period of record warmth and very low humidity will bring elevated to critical fire weather conditions for much of northeast and north central Colorado through Saturday. The most widespread critical conditions are expected to develop Saturday afternoon and hold into Saturday evening. COZ238-242-200900- /O.EXP.KBOU.FW.W.0024.000000T0000Z-260320T0100Z/ /O.CON.KBOU.FW.W.0026.260320T1700Z-260321T0100Z/ /O.CON.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ Larimer County Below 6000 Feet/Northwest Weld County- Northeast Weld County- 659 PM MDT Thu Mar 19 2026 ...RED FLAG WARNING WILL EXPIRE AT 7 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE CHEYENNE RIDGE AREA AND PAWNEE NATIONAL GRASSLANDS... ...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM TO 7 PM MDT FRIDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR THE CHEYENNE RIDGE AREA AND PAWNEE NATIONAL GRASSLANDS... ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR MUCH OF NORTHEAST AND NORTH CENTRAL COLORADO IN ELEVATIONS BELOW 9,000 FEET... The National Weather Service in Denver has issued a Red Flag Warning for Wind and Low Relative Humidity, which in in effect from 11 AM to 7 PM Friday. * AFFECTED AREA...Fire Weather Zones 238 and 242. * TIMING...For the Red Flag Warning, from 11 AM to 7 PM MDT Friday. For the Fire Weather Watch, from Saturday morning through Saturday evening. * WINDS...West 10 to 20 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 6 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. && $$ COZ239>241-243>245-248>251-200900- /O.CON.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ 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- Elbert/Central and East Douglas Counties Above 6000 Feet- Central and South Weld County-Morgan County- Central and East Adams and Arapahoe Counties-Logan County- Washington County-Sedgwick County-Phillips County- 659 PM 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 OF COLORADO AND I-25 URBAN CORRIDOR... * AFFECTED AREA...Fire Weather Zones 239, 240, 241, 243, 244, 245, 248, 249, 250 and 251. * TIMING...From Saturday morning through Saturday evening. * WINDS...West 5 to 15 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 5 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. && $$ COZ214>216-200900- /O.CON.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ Central and Southeast Park County- Larimer and Boulder Counties Between 6000 and 9000 Feet- Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below 9000 Feet- 659 PM MDT Thu Mar 19 2026 ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE FRONT RANGE FOOTHILLS AND SOUTH PARK... * AFFECTED AREA...Fire Weather Zones 214, 215 and 216. * TIMING...From Saturday morning through Saturday evening. * WINDS...West 10 to 20 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...As low as 6 percent. * IMPACTS...Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings. && $$ COZ211-213-200900- /O.CON.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ Jackson County Below 9000 Feet- Grand and Summit Counties Below 9000 Feet- 659 PM 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 HIGH MOUNTAIN VALLEYS OF GRAND AND JACKSON COUNTIES... * AFFECTED AREA...Fire Weather Zones 211 and 213. * TIMING...From Saturday morning through Saturday evening. * WINDS...West 10 to 20 mph with gusts up to 40 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 Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings. && $$ Action: Continued Issued At: 2026-03-19 20:00:33 576 WWUS85 KBOU 200059 RFWBOU URGENT - FIRE WEATHER MESSAGE National Weather Service Denver/Boulder CO 659 PM MDT Thu Mar 19 2026 A prolonged period of record warmth and very low humidity will bring elevated to critical fire weather conditions for much of northeast and north central Colorado through Saturday. The most widespread critical conditions are expected to develop Saturday afternoon and hold into Saturday evening. COZ238-242-200900- /O.EXP.KBOU.FW.W.0024.000000T0000Z-260320T0100Z/ /O.CON.KBOU.FW.W.0026.260320T1700Z-260321T0100Z/ /O.CON.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ Larimer County Below 6000 Feet/Northwest Weld County- Northeast Weld County- 659 PM MDT Thu Mar 19 2026 ...RED FLAG WARNING WILL EXPIRE AT 7 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE CHEYENNE RIDGE AREA AND PAWNEE NATIONAL GRASSLANDS... ...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM TO 7 PM MDT FRIDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR THE CHEYENNE RIDGE AREA AND PAWNEE NATIONAL GRASSLANDS... ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR MUCH OF NORTHEAST AND NORTH CENTRAL COLORADO IN ELEVATIONS BELOW 9,000 FEET... The National Weather Service in Denver has issued a Red Flag Warning for Wind and Low Relative Humidity, which in in effect from 11 AM to 7 PM Friday. * AFFECTED AREA...Fire Weather Zones 238 and 242. * TIMING...For the Red Flag Warning, from 11 AM to 7 PM MDT Friday. For the Fire Weather Watch, from Saturday morning through Saturday evening. * WINDS...West 10 to 20 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 6 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. && $$ COZ239>241-243>245-248>251-200900- /O.CON.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ 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- Elbert/Central and East Douglas Counties Above 6000 Feet- Central and South Weld County-Morgan County- Central and East Adams and Arapahoe Counties-Logan County- Washington County-Sedgwick County-Phillips County- 659 PM 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 OF COLORADO AND I-25 URBAN CORRIDOR... * AFFECTED AREA...Fire Weather Zones 239, 240, 241, 243, 244, 245, 248, 249, 250 and 251. * TIMING...From Saturday morning through Saturday evening. * WINDS...West 5 to 15 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 5 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. && $$ COZ214>216-200900- /O.CON.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ Central and Southeast Park County- Larimer and Boulder Counties Between 6000 and 9000 Feet- Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below 9000 Feet- 659 PM MDT Thu Mar 19 2026 ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE FRONT RANGE FOOTHILLS AND SOUTH PARK... * AFFECTED AREA...Fire Weather Zones 214, 215 and 216. * TIMING...From Saturday morning through Saturday evening. * WINDS...West 10 to 20 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...As low as 6 percent. * IMPACTS...Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings. && $$ COZ211-213-200900- /O.CON.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ Jackson County Below 9000 Feet- Grand and Summit Counties Below 9000 Feet- 659 PM 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 HIGH MOUNTAIN VALLEYS OF GRAND AND JACKSON COUNTIES... * AFFECTED AREA...Fire Weather Zones 211 and 213. * TIMING...From Saturday morning through Saturday evening. * WINDS...West 10 to 20 mph with gusts up to 40 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 Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings. && $$ Action: Continued Issued At: 2026-03-19 20:00:33 576 WWUS85 KBOU 200059 RFWBOU URGENT - FIRE WEATHER MESSAGE National Weather Service Denver/Boulder CO 659 PM MDT Thu Mar 19 2026 A prolonged period of record warmth and very low humidity will bring elevated to critical fire weather conditions for much of northeast and north central Colorado through Saturday. The most widespread critical conditions are expected to develop Saturday afternoon and hold into Saturday evening. COZ238-242-200900- /O.EXP.KBOU.FW.W.0024.000000T0000Z-260320T0100Z/ /O.CON.KBOU.FW.W.0026.260320T1700Z-260321T0100Z/ /O.CON.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ Larimer County Below 6000 Feet/Northwest Weld County- Northeast Weld County- 659 PM MDT Thu Mar 19 2026 ...RED FLAG WARNING WILL EXPIRE AT 7 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE CHEYENNE RIDGE AREA AND PAWNEE NATIONAL GRASSLANDS... ...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM TO 7 PM MDT FRIDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR THE CHEYENNE RIDGE AREA AND PAWNEE NATIONAL GRASSLANDS... ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR MUCH OF NORTHEAST AND NORTH CENTRAL COLORADO IN ELEVATIONS BELOW 9,000 FEET... The National Weather Service in Denver has issued a Red Flag Warning for Wind and Low Relative Humidity, which in in effect from 11 AM to 7 PM Friday. * AFFECTED AREA...Fire Weather Zones 238 and 242. * TIMING...For the Red Flag Warning, from 11 AM to 7 PM MDT Friday. For the Fire Weather Watch, from Saturday morning through Saturday evening. * WINDS...West 10 to 20 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 6 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. && $$ COZ239>241-243>245-248>251-200900- /O.CON.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ 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- Elbert/Central and East Douglas Counties Above 6000 Feet- Central and South Weld County-Morgan County- Central and East Adams and Arapahoe Counties-Logan County- Washington County-Sedgwick County-Phillips County- 659 PM 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 OF COLORADO AND I-25 URBAN CORRIDOR... * AFFECTED AREA...Fire Weather Zones 239, 240, 241, 243, 244, 245, 248, 249, 250 and 251. * TIMING...From Saturday morning through Saturday evening. * WINDS...West 5 to 15 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 5 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. && $$ COZ214>216-200900- /O.CON.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ Central and Southeast Park County- Larimer and Boulder Counties Between 6000 and 9000 Feet- Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below 9000 Feet- 659 PM MDT Thu Mar 19 2026 ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE FRONT RANGE FOOTHILLS AND SOUTH PARK... * AFFECTED AREA...Fire Weather Zones 214, 215 and 216. * TIMING...From Saturday morning through Saturday evening. * WINDS...West 10 to 20 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...As low as 6 percent. * IMPACTS...Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings. && $$ COZ211-213-200900- /O.CON.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ Jackson County Below 9000 Feet- Grand and Summit Counties Below 9000 Feet- 659 PM 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 HIGH MOUNTAIN VALLEYS OF GRAND AND JACKSON COUNTIES... * AFFECTED AREA...Fire Weather Zones 211 and 213. * TIMING...From Saturday morning through Saturday evening. * WINDS...West 10 to 20 mph with gusts up to 40 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 Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings. && $$ Action: Continued Issued At: 2026-03-19 20:00:33 576 WWUS85 KBOU 200059 RFWBOU URGENT - FIRE WEATHER MESSAGE National Weather Service Denver/Boulder CO 659 PM MDT Thu Mar 19 2026 A prolonged period of record warmth and very low humidity will bring elevated to critical fire weather conditions for much of northeast and north central Colorado through Saturday. The most widespread critical conditions are expected to develop Saturday afternoon and hold into Saturday evening. COZ238-242-200900- /O.EXP.KBOU.FW.W.0024.000000T0000Z-260320T0100Z/ /O.CON.KBOU.FW.W.0026.260320T1700Z-260321T0100Z/ /O.CON.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ Larimer County Below 6000 Feet/Northwest Weld County- Northeast Weld County- 659 PM MDT Thu Mar 19 2026 ...RED FLAG WARNING WILL EXPIRE AT 7 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE CHEYENNE RIDGE AREA AND PAWNEE NATIONAL GRASSLANDS... ...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM TO 7 PM MDT FRIDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR THE CHEYENNE RIDGE AREA AND PAWNEE NATIONAL GRASSLANDS... ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR MUCH OF NORTHEAST AND NORTH CENTRAL COLORADO IN ELEVATIONS BELOW 9,000 FEET... The National Weather Service in Denver has issued a Red Flag Warning for Wind and Low Relative Humidity, which in in effect from 11 AM to 7 PM Friday. * AFFECTED AREA...Fire Weather Zones 238 and 242. * TIMING...For the Red Flag Warning, from 11 AM to 7 PM MDT Friday. For the Fire Weather Watch, from Saturday morning through Saturday evening. * WINDS...West 10 to 20 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 6 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. && $$ COZ239>241-243>245-248>251-200900- /O.CON.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ 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- Elbert/Central and East Douglas Counties Above 6000 Feet- Central and South Weld County-Morgan County- Central and East Adams and Arapahoe Counties-Logan County- Washington County-Sedgwick County-Phillips County- 659 PM 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 OF COLORADO AND I-25 URBAN CORRIDOR... * AFFECTED AREA...Fire Weather Zones 239, 240, 241, 243, 244, 245, 248, 249, 250 and 251. * TIMING...From Saturday morning through Saturday evening. * WINDS...West 5 to 15 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 5 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. && $$ COZ214>216-200900- /O.CON.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ Central and Southeast Park County- Larimer and Boulder Counties Between 6000 and 9000 Feet- Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below 9000 Feet- 659 PM MDT Thu Mar 19 2026 ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE FRONT RANGE FOOTHILLS AND SOUTH PARK... * AFFECTED AREA...Fire Weather Zones 214, 215 and 216. * TIMING...From Saturday morning through Saturday evening. * WINDS...West 10 to 20 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...As low as 6 percent. * IMPACTS...Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings. && $$ COZ211-213-200900- /O.CON.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ Jackson County Below 9000 Feet- Grand and Summit Counties Below 9000 Feet- 659 PM 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 HIGH MOUNTAIN VALLEYS OF GRAND AND JACKSON COUNTIES... * AFFECTED AREA...Fire Weather Zones 211 and 213. * TIMING...From Saturday morning through Saturday evening. * WINDS...West 10 to 20 mph with gusts up to 40 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 Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings. && $$ Action: Continued Issued At: 2026-03-20 03:54:04 155 WWUS85 KBOU 200853 RFWBOU URGENT - FIRE WEATHER MESSAGE National Weather Service Denver/Boulder CO 253 AM MDT Fri Mar 20 2026 ...WIDESPREAD CRITICAL FIRE WEATHER CONDITIONS PEAKING SATURDAY... All-time record March heat, exceptionally low humidity, and periods of breezy winds will continue to drive critical fire weather conditions through Saturday. Today, the highest fire danger will be localized to the Cheyenne Ridge and vicinity where winds will be strongest. Breezy winds will become expansive on Saturday coinciding with highly anomalous heat and single-digit humidity, extending into the foothills and high mountain valleys. COZ238-242-202100- /O.CON.KBOU.FW.W.0026.260320T1700Z-260321T0100Z/ /O.CON.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ Larimer County Below 6000 Feet/Northwest Weld County- Northeast Weld County- 253 AM MDT Fri Mar 20 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 THE CHEYENNE RIDGE AREA AND PAWNEE NATIONAL GRASSLANDS... ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR MUCH OF NORTHEAST AND NORTH CENTRAL COLORADO IN ELEVATIONS BELOW 9,000 FEET... * 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 Fire Weather Watch, from 11 AM MDT Saturday through 10 PM MDT Saturday. * WINDS...West 10 to 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 6 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. && $$ COZ239>241-243>245-248>251-202100- /O.CON.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ 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- Elbert/Central and East Douglas Counties Above 6000 Feet- Central and South Weld County-Morgan County- Central and East Adams and Arapahoe Counties-Logan County- Washington County-Sedgwick County-Phillips County- 253 AM MDT Fri Mar 20 2026 ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE NORTHEAST PLAINS AND I-25 CORRIDOR... * AFFECTED AREA...Fire Weather Zones 239, 240, 241, 243, 244, 245, 248, 249, 250 and 251. * TIMING...Saturday from 11 AM through 10 PM MDT. * WINDS...West 5 to 15 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 5 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. && $$ COZ214>216-202100- /O.CON.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ Central and Southeast Park County- Larimer and Boulder Counties Between 6000 and 9000 Feet- Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below 9000 Feet- 253 AM MDT Fri Mar 20 2026 ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE FRONT RANGE FOOTHILLS AND SOUTH PARK... * AFFECTED AREA...Fire Weather Zones 214, 215 and 216. * TIMING...Saturday from 11 AM through 10 PM MDT. * WINDS...West 10 to 20 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...As low as 6 percent. * IMPACTS...Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings. && $$ COZ211-213-202100- /O.CON.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ Jackson County Below 9000 Feet- Grand and Summit Counties Below 9000 Feet- 253 AM MDT Fri Mar 20 2026 ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE HIGH MOUNTAIN VALLEYS OF GRAND AND JACKSON COUNTIES... * AFFECTED AREA...Fire Weather Zones 211 and 213. * TIMING...Saturday from 11 AM through 10 PM MDT. * WINDS...West 10 to 20 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 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. 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. && $$ Rodriguez Action: Continued Issued At: 2026-03-20 03:54:04 155 WWUS85 KBOU 200853 RFWBOU URGENT - FIRE WEATHER MESSAGE National Weather Service Denver/Boulder CO 253 AM MDT Fri Mar 20 2026 ...WIDESPREAD CRITICAL FIRE WEATHER CONDITIONS PEAKING SATURDAY... All-time record March heat, exceptionally low humidity, and periods of breezy winds will continue to drive critical fire weather conditions through Saturday. Today, the highest fire danger will be localized to the Cheyenne Ridge and vicinity where winds will be strongest. Breezy winds will become expansive on Saturday coinciding with highly anomalous heat and single-digit humidity, extending into the foothills and high mountain valleys. COZ238-242-202100- /O.CON.KBOU.FW.W.0026.260320T1700Z-260321T0100Z/ /O.CON.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ Larimer County Below 6000 Feet/Northwest Weld County- Northeast Weld County- 253 AM MDT Fri Mar 20 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 THE CHEYENNE RIDGE AREA AND PAWNEE NATIONAL GRASSLANDS... ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR MUCH OF NORTHEAST AND NORTH CENTRAL COLORADO IN ELEVATIONS BELOW 9,000 FEET... * 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 Fire Weather Watch, from 11 AM MDT Saturday through 10 PM MDT Saturday. * WINDS...West 10 to 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 6 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. && $$ COZ239>241-243>245-248>251-202100- /O.CON.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ 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- Elbert/Central and East Douglas Counties Above 6000 Feet- Central and South Weld County-Morgan County- Central and East Adams and Arapahoe Counties-Logan County- Washington County-Sedgwick County-Phillips County- 253 AM MDT Fri Mar 20 2026 ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE NORTHEAST PLAINS AND I-25 CORRIDOR... * AFFECTED AREA...Fire Weather Zones 239, 240, 241, 243, 244, 245, 248, 249, 250 and 251. * TIMING...Saturday from 11 AM through 10 PM MDT. * WINDS...West 5 to 15 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 5 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. && $$ COZ214>216-202100- /O.CON.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ Central and Southeast Park County- Larimer and Boulder Counties Between 6000 and 9000 Feet- Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below 9000 Feet- 253 AM MDT Fri Mar 20 2026 ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE FRONT RANGE FOOTHILLS AND SOUTH PARK... * AFFECTED AREA...Fire Weather Zones 214, 215 and 216. * TIMING...Saturday from 11 AM through 10 PM MDT. * WINDS...West 10 to 20 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...As low as 6 percent. * IMPACTS...Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings. && $$ COZ211-213-202100- /O.CON.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ Jackson County Below 9000 Feet- Grand and Summit Counties Below 9000 Feet- 253 AM MDT Fri Mar 20 2026 ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE HIGH MOUNTAIN VALLEYS OF GRAND AND JACKSON COUNTIES... * AFFECTED AREA...Fire Weather Zones 211 and 213. * TIMING...Saturday from 11 AM through 10 PM MDT. * WINDS...West 10 to 20 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 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. 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. && $$ Rodriguez Action: Continued Issued At: 2026-03-20 03:54:04 155 WWUS85 KBOU 200853 RFWBOU URGENT - FIRE WEATHER MESSAGE National Weather Service Denver/Boulder CO 253 AM MDT Fri Mar 20 2026 ...WIDESPREAD CRITICAL FIRE WEATHER CONDITIONS PEAKING SATURDAY... All-time record March heat, exceptionally low humidity, and periods of breezy winds will continue to drive critical fire weather conditions through Saturday. Today, the highest fire danger will be localized to the Cheyenne Ridge and vicinity where winds will be strongest. Breezy winds will become expansive on Saturday coinciding with highly anomalous heat and single-digit humidity, extending into the foothills and high mountain valleys. COZ238-242-202100- /O.CON.KBOU.FW.W.0026.260320T1700Z-260321T0100Z/ /O.CON.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ Larimer County Below 6000 Feet/Northwest Weld County- Northeast Weld County- 253 AM MDT Fri Mar 20 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 THE CHEYENNE RIDGE AREA AND PAWNEE NATIONAL GRASSLANDS... ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR MUCH OF NORTHEAST AND NORTH CENTRAL COLORADO IN ELEVATIONS BELOW 9,000 FEET... * 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 Fire Weather Watch, from 11 AM MDT Saturday through 10 PM MDT Saturday. * WINDS...West 10 to 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 6 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. && $$ COZ239>241-243>245-248>251-202100- /O.CON.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ 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- Elbert/Central and East Douglas Counties Above 6000 Feet- Central and South Weld County-Morgan County- Central and East Adams and Arapahoe Counties-Logan County- Washington County-Sedgwick County-Phillips County- 253 AM MDT Fri Mar 20 2026 ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE NORTHEAST PLAINS AND I-25 CORRIDOR... * AFFECTED AREA...Fire Weather Zones 239, 240, 241, 243, 244, 245, 248, 249, 250 and 251. * TIMING...Saturday from 11 AM through 10 PM MDT. * WINDS...West 5 to 15 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 5 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. && $$ COZ214>216-202100- /O.CON.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ Central and Southeast Park County- Larimer and Boulder Counties Between 6000 and 9000 Feet- Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below 9000 Feet- 253 AM MDT Fri Mar 20 2026 ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE FRONT RANGE FOOTHILLS AND SOUTH PARK... * AFFECTED AREA...Fire Weather Zones 214, 215 and 216. * TIMING...Saturday from 11 AM through 10 PM MDT. * WINDS...West 10 to 20 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...As low as 6 percent. * IMPACTS...Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings. && $$ COZ211-213-202100- /O.CON.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ Jackson County Below 9000 Feet- Grand and Summit Counties Below 9000 Feet- 253 AM MDT Fri Mar 20 2026 ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE HIGH MOUNTAIN VALLEYS OF GRAND AND JACKSON COUNTIES... * AFFECTED AREA...Fire Weather Zones 211 and 213. * TIMING...Saturday from 11 AM through 10 PM MDT. * WINDS...West 10 to 20 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 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. 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. && $$ Rodriguez Action: Continued Issued At: 2026-03-20 03:54:04 155 WWUS85 KBOU 200853 RFWBOU URGENT - FIRE WEATHER MESSAGE National Weather Service Denver/Boulder CO 253 AM MDT Fri Mar 20 2026 ...WIDESPREAD CRITICAL FIRE WEATHER CONDITIONS PEAKING SATURDAY... All-time record March heat, exceptionally low humidity, and periods of breezy winds will continue to drive critical fire weather conditions through Saturday. Today, the highest fire danger will be localized to the Cheyenne Ridge and vicinity where winds will be strongest. Breezy winds will become expansive on Saturday coinciding with highly anomalous heat and single-digit humidity, extending into the foothills and high mountain valleys. COZ238-242-202100- /O.CON.KBOU.FW.W.0026.260320T1700Z-260321T0100Z/ /O.CON.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ Larimer County Below 6000 Feet/Northwest Weld County- Northeast Weld County- 253 AM MDT Fri Mar 20 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 THE CHEYENNE RIDGE AREA AND PAWNEE NATIONAL GRASSLANDS... ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR MUCH OF NORTHEAST AND NORTH CENTRAL COLORADO IN ELEVATIONS BELOW 9,000 FEET... * 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 Fire Weather Watch, from 11 AM MDT Saturday through 10 PM MDT Saturday. * WINDS...West 10 to 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 6 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. && $$ COZ239>241-243>245-248>251-202100- /O.CON.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ 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- Elbert/Central and East Douglas Counties Above 6000 Feet- Central and South Weld County-Morgan County- Central and East Adams and Arapahoe Counties-Logan County- Washington County-Sedgwick County-Phillips County- 253 AM MDT Fri Mar 20 2026 ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE NORTHEAST PLAINS AND I-25 CORRIDOR... * AFFECTED AREA...Fire Weather Zones 239, 240, 241, 243, 244, 245, 248, 249, 250 and 251. * TIMING...Saturday from 11 AM through 10 PM MDT. * WINDS...West 5 to 15 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 5 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. && $$ COZ214>216-202100- /O.CON.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ Central and Southeast Park County- Larimer and Boulder Counties Between 6000 and 9000 Feet- Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below 9000 Feet- 253 AM MDT Fri Mar 20 2026 ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE FRONT RANGE FOOTHILLS AND SOUTH PARK... * AFFECTED AREA...Fire Weather Zones 214, 215 and 216. * TIMING...Saturday from 11 AM through 10 PM MDT. * WINDS...West 10 to 20 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...As low as 6 percent. * IMPACTS...Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings. && $$ COZ211-213-202100- /O.CON.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ Jackson County Below 9000 Feet- Grand and Summit Counties Below 9000 Feet- 253 AM MDT Fri Mar 20 2026 ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE HIGH MOUNTAIN VALLEYS OF GRAND AND JACKSON COUNTIES... * AFFECTED AREA...Fire Weather Zones 211 and 213. * TIMING...Saturday from 11 AM through 10 PM MDT. * WINDS...West 10 to 20 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 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. 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. && $$ Rodriguez Action: Upgraded Issued At: 2026-03-20 13:46:52 948 WWUS85 KBOU 201846 RFWBOU URGENT - FIRE WEATHER MESSAGE National Weather Service Denver/Boulder CO 1246 PM MDT Fri Mar 20 2026 ...WIDESPREAD CRITICAL FIRE WEATHER CONDITIONS PEAKING SATURDAY... All-time record March heat, exceptionally low humidity, and periods of breezy winds will continue to drive critical fire weather conditions through Saturday. Today, the highest fire danger will be localized to the Cheyenne Ridge and vicinity where winds will be strongest. Breezy winds will become expansive on Saturday coinciding with highly anomalous heat and single-digit humidity, extending into the foothills and high mountain valleys. COZ249-251-202000- /O.CAN.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ Washington County-Phillips County- 1246 PM MDT Fri Mar 20 2026 ...FIRE WEATHER WATCH IS CANCELLED FOR WIND AND LOW RELATIVE HUMIDITY FOR WASHINGTON COUNTY AND PHILLIPS COUNTY... FIRE ZONES 249 AND 251... The National Weather Service in Denver has cancelled the Fire Weather Watch. Winds are forecast to be light through most of the afternoon hours on Saturday, allowing the watch to be cancelled. Elevated fire weather conditions are still expected due the well above normal temperatures and exceptionally dry humidity. $$ COZ238-242-210300- /O.UPG.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ /O.NEW.KBOU.FW.W.0027.260321T2000Z-260322T0400Z/ /O.CON.KBOU.FW.W.0026.000000T0000Z-260321T0100Z/ Larimer County Below 6000 Feet/Northwest Weld County- Northeast Weld County- 1246 PM MDT Fri Mar 20 2026 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE CHEYENNE RIDGE AREA AND PAWNEE NATIONAL GRASSLANDS... ...RED FLAG WARNING IN EFFECT FROM 2 PM TO 10 PM MDT SATURDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR THE NORTHERN I-25 CORRIDOR INCLUDING FORT COLLINS... FIRE WEATHER ZONES 238 AND 242... The National Weather Service in Denver has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 2 PM to 10 PM MDT Saturday. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Fire Weather Zones 238 and 242. * TIMING...For the first Red Flag Warning, until 7 PM MDT this evening. For the second Red Flag Warning, from 2 PM to 10 PM MDT Saturday. * WINDS...West 10 to 20 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 5 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. && $$ COZ239>241-243>245-248-250-210300- /O.UPG.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ /O.NEW.KBOU.FW.W.0027.260321T2000Z-260322T0400Z/ Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County- North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County- Elbert/Central and East Douglas Counties Above 6000 Feet- Central and South Weld County-Morgan County- Central and East Adams and Arapahoe Counties-Logan County- Sedgwick County- 1246 PM MDT Fri Mar 20 2026 ...RED FLAG WARNING IN EFFECT FROM 2 PM TO 10 PM MDT SATURDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR THE I-25 CORRIDOR, PALMER DIVIDE, AND NORTHEAST PLAINS ALONG I-76... The National Weather Service in Denver has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 2 PM to 10 PM MDT Saturday. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Fire Weather Zones 239, 240, 241, 243, 244, 245, 248 and 250. * TIMING...From 2 PM to 10 PM MDT Saturday. * WINDS...West 10 to 15 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 3 percent. * IMPACTS...Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ COZ214>216-210300- /O.UPG.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ /O.NEW.KBOU.FW.W.0027.260321T1700Z-260322T0400Z/ 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- 1246 PM MDT Fri Mar 20 2026 ...RED FLAG WARNING IN EFFECT FROM 11 AM TO 10 PM MDT SATURDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR THE FRONT RANGE FOOTHILLS AND SOUTH PARK... FIRE WEATHER ZONES 214 THROUGH 216... The National Weather Service in Denver has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 11 AM to 10 PM MDT Saturday. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Fire Weather Zones 214, 215 and 216. * TIMING...From 11 AM to 10 PM MDT Saturday. * WINDS...West 10 to 20 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...As low as 5 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. && $$ COZ211-213-210300- /O.UPG.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ /O.NEW.KBOU.FW.W.0027.260321T1700Z-260322T0400Z/ Jackson County Below 9000 Feet- Grand and Summit Counties Below 9000 Feet- 1246 PM MDT Fri Mar 20 2026 ...RED FLAG WARNING IN EFFECT FROM 11 AM TO 10 PM MDT SATURDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR NORTH PARK AND MIDDLE PARK... FIRE WEATHER ZONES 211 AND 213... The National Weather Service in Denver has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 11 AM to 10 PM MDT Saturday. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Fire Weather Zones 211 and 213. * TIMING...From 11 AM to 10 PM MDT Saturday. * WINDS...West 10 to 20 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 7 percent. * IMPACTS...Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ Action: Cancelled Issued At: 2026-03-20 13:46:52 948 WWUS85 KBOU 201846 RFWBOU URGENT - FIRE WEATHER MESSAGE National Weather Service Denver/Boulder CO 1246 PM MDT Fri Mar 20 2026 ...WIDESPREAD CRITICAL FIRE WEATHER CONDITIONS PEAKING SATURDAY... All-time record March heat, exceptionally low humidity, and periods of breezy winds will continue to drive critical fire weather conditions through Saturday. Today, the highest fire danger will be localized to the Cheyenne Ridge and vicinity where winds will be strongest. Breezy winds will become expansive on Saturday coinciding with highly anomalous heat and single-digit humidity, extending into the foothills and high mountain valleys. COZ249-251-202000- /O.CAN.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ Washington County-Phillips County- 1246 PM MDT Fri Mar 20 2026 ...FIRE WEATHER WATCH IS CANCELLED FOR WIND AND LOW RELATIVE HUMIDITY FOR WASHINGTON COUNTY AND PHILLIPS COUNTY... FIRE ZONES 249 AND 251... The National Weather Service in Denver has cancelled the Fire Weather Watch. Winds are forecast to be light through most of the afternoon hours on Saturday, allowing the watch to be cancelled. Elevated fire weather conditions are still expected due the well above normal temperatures and exceptionally dry humidity. $$ COZ238-242-210300- /O.UPG.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ /O.NEW.KBOU.FW.W.0027.260321T2000Z-260322T0400Z/ /O.CON.KBOU.FW.W.0026.000000T0000Z-260321T0100Z/ Larimer County Below 6000 Feet/Northwest Weld County- Northeast Weld County- 1246 PM MDT Fri Mar 20 2026 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE CHEYENNE RIDGE AREA AND PAWNEE NATIONAL GRASSLANDS... ...RED FLAG WARNING IN EFFECT FROM 2 PM TO 10 PM MDT SATURDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR THE NORTHERN I-25 CORRIDOR INCLUDING FORT COLLINS... FIRE WEATHER ZONES 238 AND 242... The National Weather Service in Denver has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 2 PM to 10 PM MDT Saturday. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Fire Weather Zones 238 and 242. * TIMING...For the first Red Flag Warning, until 7 PM MDT this evening. For the second Red Flag Warning, from 2 PM to 10 PM MDT Saturday. * WINDS...West 10 to 20 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 5 percent. * IMPACTS...Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ COZ239>241-243>245-248-250-210300- /O.UPG.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ /O.NEW.KBOU.FW.W.0027.260321T2000Z-260322T0400Z/ 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- Elbert/Central and East Douglas Counties Above 6000 Feet- Central and South Weld County-Morgan County- Central and East Adams and Arapahoe Counties-Logan County- Sedgwick County- 1246 PM MDT Fri Mar 20 2026 ...RED FLAG WARNING IN EFFECT FROM 2 PM TO 10 PM MDT SATURDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR THE I-25 CORRIDOR, PALMER DIVIDE, AND NORTHEAST PLAINS ALONG I-76... The National Weather Service in Denver has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 2 PM to 10 PM MDT Saturday. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Fire Weather Zones 239, 240, 241, 243, 244, 245, 248 and 250. * TIMING...From 2 PM to 10 PM MDT Saturday. * WINDS...West 10 to 15 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 3 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. && $$ COZ214>216-210300- /O.UPG.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ /O.NEW.KBOU.FW.W.0027.260321T1700Z-260322T0400Z/ Central and Southeast Park County- Larimer and Boulder Counties Between 6000 and 9000 Feet- Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below 9000 Feet- 1246 PM MDT Fri Mar 20 2026 ...RED FLAG WARNING IN EFFECT FROM 11 AM TO 10 PM MDT SATURDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR THE FRONT RANGE FOOTHILLS AND SOUTH PARK... FIRE WEATHER ZONES 214 THROUGH 216... The National Weather Service in Denver has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 11 AM to 10 PM MDT Saturday. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Fire Weather Zones 214, 215 and 216. * TIMING...From 11 AM to 10 PM MDT Saturday. * WINDS...West 10 to 20 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...As low as 5 percent. * IMPACTS...Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ COZ211-213-210300- /O.UPG.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ /O.NEW.KBOU.FW.W.0027.260321T1700Z-260322T0400Z/ Jackson County Below 9000 Feet- Grand and Summit Counties Below 9000 Feet- 1246 PM MDT Fri Mar 20 2026 ...RED FLAG WARNING IN EFFECT FROM 11 AM TO 10 PM MDT SATURDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR NORTH PARK AND MIDDLE PARK... FIRE WEATHER ZONES 211 AND 213... The National Weather Service in Denver has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 11 AM to 10 PM MDT Saturday. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Fire Weather Zones 211 and 213. * TIMING...From 11 AM to 10 PM MDT Saturday. * WINDS...West 10 to 20 mph with gusts up 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 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. && $$ Action: Upgraded Issued At: 2026-03-20 13:46:52 948 WWUS85 KBOU 201846 RFWBOU URGENT - FIRE WEATHER MESSAGE National Weather Service Denver/Boulder CO 1246 PM MDT Fri Mar 20 2026 ...WIDESPREAD CRITICAL FIRE WEATHER CONDITIONS PEAKING SATURDAY... All-time record March heat, exceptionally low humidity, and periods of breezy winds will continue to drive critical fire weather conditions through Saturday. Today, the highest fire danger will be localized to the Cheyenne Ridge and vicinity where winds will be strongest. Breezy winds will become expansive on Saturday coinciding with highly anomalous heat and single-digit humidity, extending into the foothills and high mountain valleys. COZ249-251-202000- /O.CAN.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ Washington County-Phillips County- 1246 PM MDT Fri Mar 20 2026 ...FIRE WEATHER WATCH IS CANCELLED FOR WIND AND LOW RELATIVE HUMIDITY FOR WASHINGTON COUNTY AND PHILLIPS COUNTY... FIRE ZONES 249 AND 251... The National Weather Service in Denver has cancelled the Fire Weather Watch. Winds are forecast to be light through most of the afternoon hours on Saturday, allowing the watch to be cancelled. Elevated fire weather conditions are still expected due the well above normal temperatures and exceptionally dry humidity. $$ COZ238-242-210300- /O.UPG.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ /O.NEW.KBOU.FW.W.0027.260321T2000Z-260322T0400Z/ /O.CON.KBOU.FW.W.0026.000000T0000Z-260321T0100Z/ Larimer County Below 6000 Feet/Northwest Weld County- Northeast Weld County- 1246 PM MDT Fri Mar 20 2026 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE CHEYENNE RIDGE AREA AND PAWNEE NATIONAL GRASSLANDS... ...RED FLAG WARNING IN EFFECT FROM 2 PM TO 10 PM MDT SATURDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR THE NORTHERN I-25 CORRIDOR INCLUDING FORT COLLINS... FIRE WEATHER ZONES 238 AND 242... The National Weather Service in Denver has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 2 PM to 10 PM MDT Saturday. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Fire Weather Zones 238 and 242. * TIMING...For the first Red Flag Warning, until 7 PM MDT this evening. For the second Red Flag Warning, from 2 PM to 10 PM MDT Saturday. * WINDS...West 10 to 20 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 5 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. && $$ COZ239>241-243>245-248-250-210300- /O.UPG.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ /O.NEW.KBOU.FW.W.0027.260321T2000Z-260322T0400Z/ Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County- North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County- Elbert/Central and East Douglas Counties Above 6000 Feet- Central and South Weld County-Morgan County- Central and East Adams and Arapahoe Counties-Logan County- Sedgwick County- 1246 PM MDT Fri Mar 20 2026 ...RED FLAG WARNING IN EFFECT FROM 2 PM TO 10 PM MDT SATURDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR THE I-25 CORRIDOR, PALMER DIVIDE, AND NORTHEAST PLAINS ALONG I-76... The National Weather Service in Denver has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 2 PM to 10 PM MDT Saturday. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Fire Weather Zones 239, 240, 241, 243, 244, 245, 248 and 250. * TIMING...From 2 PM to 10 PM MDT Saturday. * WINDS...West 10 to 15 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 3 percent. * IMPACTS...Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ COZ214>216-210300- /O.UPG.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ /O.NEW.KBOU.FW.W.0027.260321T1700Z-260322T0400Z/ 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- 1246 PM MDT Fri Mar 20 2026 ...RED FLAG WARNING IN EFFECT FROM 11 AM TO 10 PM MDT SATURDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR THE FRONT RANGE FOOTHILLS AND SOUTH PARK... FIRE WEATHER ZONES 214 THROUGH 216... The National Weather Service in Denver has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 11 AM to 10 PM MDT Saturday. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Fire Weather Zones 214, 215 and 216. * TIMING...From 11 AM to 10 PM MDT Saturday. * WINDS...West 10 to 20 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...As low as 5 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. && $$ COZ211-213-210300- /O.UPG.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ /O.NEW.KBOU.FW.W.0027.260321T1700Z-260322T0400Z/ Jackson County Below 9000 Feet- Grand and Summit Counties Below 9000 Feet- 1246 PM MDT Fri Mar 20 2026 ...RED FLAG WARNING IN EFFECT FROM 11 AM TO 10 PM MDT SATURDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR NORTH PARK AND MIDDLE PARK... FIRE WEATHER ZONES 211 AND 213... The National Weather Service in Denver has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 11 AM to 10 PM MDT Saturday. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Fire Weather Zones 211 and 213. * TIMING...From 11 AM to 10 PM MDT Saturday. * WINDS...West 10 to 20 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 7 percent. * IMPACTS...Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ Action: Upgraded Issued At: 2026-03-20 13:46:52 948 WWUS85 KBOU 201846 RFWBOU URGENT - FIRE WEATHER MESSAGE National Weather Service Denver/Boulder CO 1246 PM MDT Fri Mar 20 2026 ...WIDESPREAD CRITICAL FIRE WEATHER CONDITIONS PEAKING SATURDAY... All-time record March heat, exceptionally low humidity, and periods of breezy winds will continue to drive critical fire weather conditions through Saturday. Today, the highest fire danger will be localized to the Cheyenne Ridge and vicinity where winds will be strongest. Breezy winds will become expansive on Saturday coinciding with highly anomalous heat and single-digit humidity, extending into the foothills and high mountain valleys. COZ249-251-202000- /O.CAN.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ Washington County-Phillips County- 1246 PM MDT Fri Mar 20 2026 ...FIRE WEATHER WATCH IS CANCELLED FOR WIND AND LOW RELATIVE HUMIDITY FOR WASHINGTON COUNTY AND PHILLIPS COUNTY... FIRE ZONES 249 AND 251... The National Weather Service in Denver has cancelled the Fire Weather Watch. Winds are forecast to be light through most of the afternoon hours on Saturday, allowing the watch to be cancelled. Elevated fire weather conditions are still expected due the well above normal temperatures and exceptionally dry humidity. $$ COZ238-242-210300- /O.UPG.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ /O.NEW.KBOU.FW.W.0027.260321T2000Z-260322T0400Z/ /O.CON.KBOU.FW.W.0026.000000T0000Z-260321T0100Z/ Larimer County Below 6000 Feet/Northwest Weld County- Northeast Weld County- 1246 PM MDT Fri Mar 20 2026 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE CHEYENNE RIDGE AREA AND PAWNEE NATIONAL GRASSLANDS... ...RED FLAG WARNING IN EFFECT FROM 2 PM TO 10 PM MDT SATURDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR THE NORTHERN I-25 CORRIDOR INCLUDING FORT COLLINS... FIRE WEATHER ZONES 238 AND 242... The National Weather Service in Denver has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 2 PM to 10 PM MDT Saturday. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Fire Weather Zones 238 and 242. * TIMING...For the first Red Flag Warning, until 7 PM MDT this evening. For the second Red Flag Warning, from 2 PM to 10 PM MDT Saturday. * WINDS...West 10 to 20 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 5 percent. * IMPACTS...Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ COZ239>241-243>245-248-250-210300- /O.UPG.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ /O.NEW.KBOU.FW.W.0027.260321T2000Z-260322T0400Z/ 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- Elbert/Central and East Douglas Counties Above 6000 Feet- Central and South Weld County-Morgan County- Central and East Adams and Arapahoe Counties-Logan County- Sedgwick County- 1246 PM MDT Fri Mar 20 2026 ...RED FLAG WARNING IN EFFECT FROM 2 PM TO 10 PM MDT SATURDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR THE I-25 CORRIDOR, PALMER DIVIDE, AND NORTHEAST PLAINS ALONG I-76... The National Weather Service in Denver has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 2 PM to 10 PM MDT Saturday. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Fire Weather Zones 239, 240, 241, 243, 244, 245, 248 and 250. * TIMING...From 2 PM to 10 PM MDT Saturday. * WINDS...West 10 to 15 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 3 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. && $$ COZ214>216-210300- /O.UPG.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ /O.NEW.KBOU.FW.W.0027.260321T1700Z-260322T0400Z/ Central and Southeast Park County- Larimer and Boulder Counties Between 6000 and 9000 Feet- Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below 9000 Feet- 1246 PM MDT Fri Mar 20 2026 ...RED FLAG WARNING IN EFFECT FROM 11 AM TO 10 PM MDT SATURDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR THE FRONT RANGE FOOTHILLS AND SOUTH PARK... FIRE WEATHER ZONES 214 THROUGH 216... The National Weather Service in Denver has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 11 AM to 10 PM MDT Saturday. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Fire Weather Zones 214, 215 and 216. * TIMING...From 11 AM to 10 PM MDT Saturday. * WINDS...West 10 to 20 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...As low as 5 percent. * IMPACTS...Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ COZ211-213-210300- /O.UPG.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ /O.NEW.KBOU.FW.W.0027.260321T1700Z-260322T0400Z/ Jackson County Below 9000 Feet- Grand and Summit Counties Below 9000 Feet- 1246 PM MDT Fri Mar 20 2026 ...RED FLAG WARNING IN EFFECT FROM 11 AM TO 10 PM MDT SATURDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR NORTH PARK AND MIDDLE PARK... FIRE WEATHER ZONES 211 AND 213... The National Weather Service in Denver has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 11 AM to 10 PM MDT Saturday. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Fire Weather Zones 211 and 213. * TIMING...From 11 AM to 10 PM MDT Saturday. * WINDS...West 10 to 20 mph with gusts up 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 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. && $$ Action: Upgraded Issued At: 2026-03-20 13:46:52 948 WWUS85 KBOU 201846 RFWBOU URGENT - FIRE WEATHER MESSAGE National Weather Service Denver/Boulder CO 1246 PM MDT Fri Mar 20 2026 ...WIDESPREAD CRITICAL FIRE WEATHER CONDITIONS PEAKING SATURDAY... All-time record March heat, exceptionally low humidity, and periods of breezy winds will continue to drive critical fire weather conditions through Saturday. Today, the highest fire danger will be localized to the Cheyenne Ridge and vicinity where winds will be strongest. Breezy winds will become expansive on Saturday coinciding with highly anomalous heat and single-digit humidity, extending into the foothills and high mountain valleys. COZ249-251-202000- /O.CAN.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ Washington County-Phillips County- 1246 PM MDT Fri Mar 20 2026 ...FIRE WEATHER WATCH IS CANCELLED FOR WIND AND LOW RELATIVE HUMIDITY FOR WASHINGTON COUNTY AND PHILLIPS COUNTY... FIRE ZONES 249 AND 251... The National Weather Service in Denver has cancelled the Fire Weather Watch. Winds are forecast to be light through most of the afternoon hours on Saturday, allowing the watch to be cancelled. Elevated fire weather conditions are still expected due the well above normal temperatures and exceptionally dry humidity. $$ COZ238-242-210300- /O.UPG.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ /O.NEW.KBOU.FW.W.0027.260321T2000Z-260322T0400Z/ /O.CON.KBOU.FW.W.0026.000000T0000Z-260321T0100Z/ Larimer County Below 6000 Feet/Northwest Weld County- Northeast Weld County- 1246 PM MDT Fri Mar 20 2026 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE CHEYENNE RIDGE AREA AND PAWNEE NATIONAL GRASSLANDS... ...RED FLAG WARNING IN EFFECT FROM 2 PM TO 10 PM MDT SATURDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR THE NORTHERN I-25 CORRIDOR INCLUDING FORT COLLINS... FIRE WEATHER ZONES 238 AND 242... The National Weather Service in Denver has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 2 PM to 10 PM MDT Saturday. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Fire Weather Zones 238 and 242. * TIMING...For the first Red Flag Warning, until 7 PM MDT this evening. For the second Red Flag Warning, from 2 PM to 10 PM MDT Saturday. * WINDS...West 10 to 20 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 5 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. && $$ COZ239>241-243>245-248-250-210300- /O.UPG.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ /O.NEW.KBOU.FW.W.0027.260321T2000Z-260322T0400Z/ Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County- North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County- Elbert/Central and East Douglas Counties Above 6000 Feet- Central and South Weld County-Morgan County- Central and East Adams and Arapahoe Counties-Logan County- Sedgwick County- 1246 PM MDT Fri Mar 20 2026 ...RED FLAG WARNING IN EFFECT FROM 2 PM TO 10 PM MDT SATURDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR THE I-25 CORRIDOR, PALMER DIVIDE, AND NORTHEAST PLAINS ALONG I-76... The National Weather Service in Denver has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 2 PM to 10 PM MDT Saturday. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Fire Weather Zones 239, 240, 241, 243, 244, 245, 248 and 250. * TIMING...From 2 PM to 10 PM MDT Saturday. * WINDS...West 10 to 15 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 3 percent. * IMPACTS...Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ COZ214>216-210300- /O.UPG.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ /O.NEW.KBOU.FW.W.0027.260321T1700Z-260322T0400Z/ 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- 1246 PM MDT Fri Mar 20 2026 ...RED FLAG WARNING IN EFFECT FROM 11 AM TO 10 PM MDT SATURDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR THE FRONT RANGE FOOTHILLS AND SOUTH PARK... FIRE WEATHER ZONES 214 THROUGH 216... The National Weather Service in Denver has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 11 AM to 10 PM MDT Saturday. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Fire Weather Zones 214, 215 and 216. * TIMING...From 11 AM to 10 PM MDT Saturday. * WINDS...West 10 to 20 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...As low as 5 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. && $$ COZ211-213-210300- /O.UPG.KBOU.FW.A.0021.260321T1700Z-260322T0400Z/ /O.NEW.KBOU.FW.W.0027.260321T1700Z-260322T0400Z/ Jackson County Below 9000 Feet- Grand and Summit Counties Below 9000 Feet- 1246 PM MDT Fri Mar 20 2026 ...RED FLAG WARNING IN EFFECT FROM 11 AM TO 10 PM MDT SATURDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR NORTH PARK AND MIDDLE PARK... FIRE WEATHER ZONES 211 AND 213... The National Weather Service in Denver has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 11 AM to 10 PM MDT Saturday. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Fire Weather Zones 211 and 213. * TIMING...From 11 AM to 10 PM MDT Saturday. * WINDS...West 10 to 20 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 7 percent. * IMPACTS...Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||