Alert archive / Colorado / Red Flag Warnings in 2019
Red Flag Warning 9, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this red flag warning at Sep 29, 2019, 3:56 AM MDT for 13 counties in Colorado. It took effect at Sep 30, 2019, 12:00 PM MDT. It was in force for 7 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Sep 29, 2019, 3:56 AM MDT (09:56 UTC)
- In effect from
- Sep 30, 2019, 12:00 PM MDT
- Expired
- Sep 30, 2019, 7:00 PM MDT
- In force
- 7 hr
- Issued by
- NWS Denver/Boulder, CO
Counties Adams County, CO, Arapahoe County, CO, Boulder County, CO, Clear Creek County, CO, Douglas County, CO, Elbert County, CO, Gilpin County, CO, Grand County, CO, Jefferson County, CO, Lincoln County, CO, Park County, CO, Summit County, CO, Washington County, CO
The radar
The Denver radar (KFTG), 38 km from the middle of the area, began a volume at 10:01 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Denver, CO (KDNR), launched 00:00Z, 9.9 hours before the alert went out and 148 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 32 J/kg
- Mixed-layer CIN
- -190 J/kg
- Mixed-layer LCL
- 2240 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 107 m²/s²
- 0-3 km storm-relative helicity
- 115 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted.
781 WWUS85 KBOU 290956 RFWBOU URGENT - FIRE WEATHER MESSAGE National Weather Service Denver/Boulder CO 356 AM MDT Sun Sep 29 2019 ...CRITICAL FIRE DANGER TODAY AND MONDAY DUE TO WARM...DRY AND WINDY CONDITIONS... COZ212>214-216-241-245>247-249-291800- /O.UPG.KBOU.FW.A.0004.190930T1800Z-191001T0100Z/ /O.NEW.KBOU.FW.W.0009.190930T1800Z-191001T0100Z/ /O.CON.KBOU.FW.W.0008.190929T1800Z-190930T0100Z/ South and Southeast Grand/West Central and Southwest Boulder/ Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet-Grand and Summit Counties Below 9000 Feet- Central and Southeast Park County- Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below 9000 Feet- Elbert/Central and East Douglas Counties Above 6000 Feet- Central and East Adams and Arapahoe Counties- North and Northeast Elbert County Below 6000 Feet/North Lincoln County- Southeast Elbert County Below 6000 Feet/South Lincoln County- Washington County- 356 AM MDT Sun Sep 29 2019 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 7 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FOR MIDDLE AND SOUTH PARKS...SOUTHERN FOOTHILLS...PALMER DIVIDE AND MOST OF THE PLAINS... ...RED FLAG WARNING IN EFFECT FROM NOON TO 7 PM MDT MONDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FOR MIDDLE AND SOUTH PARKS... SOUTHERN FOOTHILLS...PALMER DIVIDE AND PLAINS SOUTH AND SOUTHEAST OF A DENVER TO AKRON LINE... The National Weather Service in Denver has issued a Red Flag Warning FOR WIND AND LOW RELATIVE HUMIDITY, which is in effect from noon to 7 PM MDT Monday. The Fire Weather Watch is no longer in effect. * Affected Area...Fire Weather Zones 212...213...214...216... 241...245...246...247 and 249. * Winds...South TO SOUTHWEST 20 to 30 mph with gusts up to 45 mph...except up to 60 mph over the higher terrain. On Monday south to southwest winds 15 to 25 mph with gusts to 35 mph...except up to 50 mph over the higher terrain. * Timing...Sunday afternoon, then again on Monday afternoon. * Relative Humidity...As low as 12 percent both afternoons. * Impacts...Conditions will be favorable for the rapid ignition, growth, and spread of fires 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. && $$ COZ242-248-291800- /O.EXA.KBOU.FW.W.0008.190929T1800Z-190930T0100Z/ Northeast Weld County-Logan County- 356 AM MDT Sun Sep 29 2019 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 7 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR NORTHEAST WELD AND LOGAN COUNTIES... The National Weather Service in Denver has issued a Red Flag Warning FOR WIND AND LOW RELATIVE HUMIDITY, which is in effect from noon today to 7 PM MDT this evening. * Affected Area...Fire Weather Zones 242 and 248. * Winds...South 15 to 25 mph with gusts up to 40 mph. * Timing...Sunday afternoon. * Relative Humidity...As low as 14 percent. * Impacts...Conditions will be favorable for the rapid ignition, growth, and spread of fires. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ COZ239-240-243-244-291800- /O.CON.KBOU.FW.W.0008.190929T1800Z-190930T0100Z/ 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- 356 AM MDT Sun Sep 29 2019 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 7 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE DENVER METRO AREA, CENTRAL AND SOUTH CENTRAL WELD COUNTY AND MORGAN COUNTY... * Affected Area...Fire Weather Zones 239...240...243 and 244. * Winds...South 15 to 25 mph with gusts up to 40 mph. * Timing...Sunday afternoon. * Relative Humidity...As low as 11 percent. * Impacts...Conditions will be favorable for the rapid ignition, growth, and spread of fires. 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. Any outdoor burning is not permitted and avoid any activity that could produce a spark in dry vegetation. && $$
6 follow-up statements
330 WWUS85 KBOU 292032 RFWBOU URGENT - FIRE WEATHER MESSAGE National Weather Service Denver/Boulder CO 232 PM MDT Sun Sep 29 2019 ...CRITICAL FIRE DANGER TODAY AND MONDAY DUE TO WARM...DRY AND WINDY CONDITIONS... COZ212>214-216-241-245>247-249-300445- /O.CON.KBOU.FW.W.0008.000000T0000Z-190930T0100Z/ /O.CON.KBOU.FW.W.0009.190930T1800Z-191001T0100Z/ South and Southeast Grand/West Central and Southwest Boulder/ Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet-Grand and Summit Counties Below 9000 Feet- Central and Southeast Park County- Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below 9000 Feet- Elbert/Central and East Douglas Counties Above 6000 Feet- Central and East Adams and Arapahoe Counties- North and Northeast Elbert County Below 6000 Feet/North Lincoln County- Southeast Elbert County Below 6000 Feet/South Lincoln County- Washington County- 232 PM MDT Sun Sep 29 2019 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FOR MIDDLE AND SOUTH PARKS...HIGH MOUNTAINS AROUND AND SOUTH OF I70...SOUTHERN FOOTHILLS...PALMER DIVIDE AND MOST OF THE EASTERN PLAINS... ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 7 PM MDT MONDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FOR MIDDLE AND SOUTH PARKS...HIGH MOUNTAINS AROUND AND SOUTH OF I70...SOUTHERN FOOTHILLS...PALMER DIVIDE AND MOST OF THE EASTERN PLAINS... * Affected Area...Fire Weather Zones 212...213...214...216... 241...245...246...247 and 249. * Winds...South 20 to 30 mph with gusts up to 50 mph. * Timing...This afternoon, easing at sunset, then again on Monday afternoon. * Relative Humidity...As low as 12 percent. * Impacts...Conditions will be favorable for the rapid ignition, growth, and spread of fires PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ COZ239-240-242>244-248-300100- /O.CON.KBOU.FW.W.0008.000000T0000Z-190930T0100Z/ 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-Northeast Weld County- Central and South Weld County-Morgan County-Logan County- 232 PM MDT Sun Sep 29 2019 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR AREAS STRETCHING FROM THE SOUTHERN METRO AREAS NORTHEAST TO SOUTHERN AND EASTERN WELD COUNTY...LOGAN AND MORGAN COUNTIES... * Affected Area...Fire Weather Zones 239...240...242...243... 244 and 248. * Winds...South 15 to 25 mph with gusts up to 45 mph. * Timing...This afternoon easing at sunset. * Relative Humidity...As low as 12 percent. * Impacts...Conditions will be favorable for the rapid ignition, growth, and spread of fires. 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. && $$
831 WWUS85 KBOU 300113 RFWBOU URGENT - FIRE WEATHER MESSAGE National Weather Service Denver/Boulder CO 713 PM MDT Sun Sep 29 2019 ...CRITICAL FIRE DANGER EXPECTED AGAIN FOR MONDAY DUE TO WARM...DRY AND WINDY CONDITIONS... COZ212>214-216-241-245>247-249-300915- /O.EXP.KBOU.FW.W.0008.000000T0000Z-190930T0100Z/ /O.CON.KBOU.FW.W.0009.190930T1800Z-191001T0100Z/ South and Southeast Grand/West Central and Southwest Boulder/ Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet-Grand and Summit Counties Below 9000 Feet- Central and Southeast Park County- Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below 9000 Feet- Elbert/Central and East Douglas Counties Above 6000 Feet- Central and East Adams and Arapahoe Counties- North and Northeast Elbert County Below 6000 Feet/North Lincoln County- Southeast Elbert County Below 6000 Feet/South Lincoln County- Washington County- 713 PM MDT Sun Sep 29 2019 ...RED FLAG WARNING HAS EXPIRED FOR WIND AND LOW RELATIVE HUMIDITY FOR FOR MIDDLE AND SOUTH PARKS...HIGH MOUNTAINS AROUND AND SOUTH OF I70...SOUTHERN FOOTHILLS...PALMER DIVIDE AND MOST OF THE EASTERN PLAINS... * Affected Area...Fire Weather Zones 212...213...214...216... 241...245...246...247 and 249. * Winds...South 10 to 20 mph with gusts up to 35 mph. * Timing...This afternoon, easing at sunset, then again on Monday afternoon. * Relative Humidity...As low as 10 percent. * Impacts...Conditions will be favorable for the rapid ignition, growth, and spread of fires PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ COZ239-240-242>244-248-300215- /O.EXP.KBOU.FW.W.0008.000000T0000Z-190930T0100Z/ 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-Northeast Weld County- Central and South Weld County-Morgan County-Logan County- 713 PM MDT Sun Sep 29 2019 ...RED FLAG WARNING HAS EXPIRED FOR WIND AND LOW RELATIVE HUMIDITY FOR AREAS STRETCHING FROM THE SOUTHERN METRO AREAS NORTHEAST TO SOUTHERN AND EASTERN WELD COUNTY...LOGAN AND MORGAN COUNTIES... Strong southwest winds will continue to decrease through the evening hours with relative humidity expected to gradually increase into the overnight period. $$
514 WWUS85 KBOU 300919 RFWBOU URGENT - FIRE WEATHER MESSAGE National Weather Service Denver/Boulder CO 319 AM MDT Mon Sep 30 2019 ...CRITICAL FIRE DANGER AGAIN TODAY DUE TO WARM...DRY AND WINDY CONDITIONS... ...FIRE DANGER REMAINS HIGH ACROSS THE MOUNTAINS AND HIGH VALLEYS TUESDAY AND WEDNESDAY... COZ213-214-301800- /O.NEW.KBOU.FW.A.0005.191001T1800Z-191002T0100Z/ /O.CON.KBOU.FW.W.0009.190930T1800Z-191001T0100Z/ Grand and Summit Counties Below 9000 Feet- Central and Southeast Park County- 319 AM MDT Mon Sep 30 2019 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 7 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR MIDDLE PARK AND SOUTH PARK... ...FIRE WEATHER WATCH IN EFFECT FROM TUESDAY AFTERNOON THROUGH TUESDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR MIDDLE PARK AND SOUTH PARK... * Affected Area...Fire Weather Zones 213 and 214. * Winds...Southwest 15 to 25 mph with gusts up to 40 mph. * Timing...This afternoon, easing at sunset. Fire danger increases again Tuesday afternoon. * Relative Humidity...As low as 12 percent. * Impacts...Conditions will be favorable for the rapid ignition, growth, and spread of fires PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings. && $$ COZ212-216-241-245>247-249-301800- /O.CON.KBOU.FW.W.0009.190930T1800Z-191001T0100Z/ South and Southeast Grand/West Central and Southwest Boulder/ Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet- Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below 9000 Feet- Elbert/Central and East Douglas Counties Above 6000 Feet- Central and East Adams and Arapahoe Counties- North and Northeast Elbert County Below 6000 Feet/North Lincoln County- Southeast Elbert County Below 6000 Feet/South Lincoln County- Washington County- 319 AM MDT Mon Sep 30 2019 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 7 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE CENTRAL MOUNTAINS...SOUTHERN FRONT RANGE FOOTHILLS...PALMER DIVIDE...AND ADJACENT PLAINS SOUTHEAST OF I-76... * Affected Area...Fire Weather Zones 212...216...241...245... 246...247 and 249. * Winds...South 15 to 25 mph with gusts up to 40 mph. * Timing...Winds and fire danger will increase by noon. Winds are expected to remain gusty much of this afternoon before decreasing by dark. * Relative Humidity...As low as 12 percent. * Impacts...Conditions will be favorable for the rapid ignition, growth, and spread of fires. 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. && $$
307 WWUS85 KBOU 301843 RFWBOU URGENT - FIRE WEATHER MESSAGE National Weather Service Denver/Boulder CO 1243 PM MDT Mon Sep 30 2019 ...CRITICAL FIRE DANGER AGAIN TODAY DUE TO WARM...DRY AND WINDY CONDITIONS... ...FIRE DANGER REMAINS HIGH ACROSS THE MOUNTAINS AND HIGH VALLEYS TUESDAY AND WEDNESDAY... COZ245-249-301945- /O.CAN.KBOU.FW.W.0009.000000T0000Z-191001T0100Z/ Central and East Adams and Arapahoe Counties-Washington County- 1243 PM MDT Mon Sep 30 2019 ...RED FLAG WARNING IS CANCELLED FOR WIND AND LOW RELATIVE HUMIDITY FOR THE CENTRAL MOUNTAINS...SOUTHERN FRONT RANGE FOOTHILLS...PALMER DIVIDE...AND ADJACENT PLAINS SOUTHEAST OF I-76... The National Weather Service in Denver has cancelled the Red Flag Warning. Increased moisture and lighter northerly winds have moved into the area. Critical fire weather conditions are no longer present. $$ COZ213-214-010245- /O.CON.KBOU.FW.W.0009.000000T0000Z-191001T0100Z/ /O.CON.KBOU.FW.A.0005.191001T1800Z-191002T0100Z/ Grand and Summit Counties Below 9000 Feet- Central and Southeast Park County- 1243 PM MDT Mon Sep 30 2019 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR MIDDLE PARK AND SOUTH PARK... ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM TUESDAY AFTERNOON THROUGH TUESDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR MIDDLE PARK AND SOUTH PARK... * Affected Area...Fire Weather Zones 213 and 214. * Winds...Southwest 15 to 25 mph with gusts up to 40 mph. * Timing...This afternoon, easing at sunset. Fire danger increases again Tuesday afternoon. * Relative Humidity...As low as 12 percent. * Impacts...Conditions will be favorable for the rapid ignition, growth, and spread of fires 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. && $$ COZ212-216-241-246-247-010100- /O.CON.KBOU.FW.W.0009.000000T0000Z-191001T0100Z/ South and Southeast Grand/West Central and Southwest Boulder/ Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet- Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below 9000 Feet- Elbert/Central and East Douglas Counties Above 6000 Feet- North and Northeast Elbert County Below 6000 Feet/North Lincoln County- Southeast Elbert County Below 6000 Feet/South Lincoln County- 1243 PM MDT Mon Sep 30 2019 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE CENTRAL MOUNTAINS... SOUTHERN FRONT RANGE FOOTHILLS...PALMER DIVIDE...AND ADJACENT PLAINS SOUTHEAST OF I-76... * Affected Area...Fire Weather Zones 212...216...241...246 and 247. * Winds...Southwest 15 to 25 mph with gusts up to 40 mph. * Timing...Winds and fire danger will increase by noon. Winds are expected to remain gusty much of this afternoon before decreasing by dark. * Relative Humidity...As low as 12 percent. * Impacts...Conditions will be favorable for the rapid ignition, growth, and spread of fires. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$
434 WWUS85 KBOU 302112 RFWBOU URGENT - FIRE WEATHER MESSAGE National Weather Service Denver/Boulder CO 312 PM MDT Mon Sep 30 2019 ...CRITICAL FIRE DANGER THROUGH EARLY EVENING DUE TO WARM, DRY, AND WINDY CONDITIONS... ...FIRE DANGER REMAINS HIGH ACROSS THE MOUNTAINS AND HIGH VALLEYS TUESDAY AND WEDNESDAY... COZ213-214-010500- /O.UPG.KBOU.FW.A.0005.191001T1800Z-191002T0100Z/ /O.NEW.KBOU.FW.W.0010.191001T1800Z-191002T0100Z/ /O.CON.KBOU.FW.W.0009.000000T0000Z-191001T0100Z/ Grand and Summit Counties Below 9000 Feet- Central and Southeast Park County- 312 PM MDT Mon Sep 30 2019 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR MIDDLE PARK AND SOUTH PARK... ...RED FLAG WARNING IN EFFECT FROM NOON TO 7 PM MDT TUESDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FOR MIDDLE PARK AND SOUTH PARK... The National Weather Service in Denver has issued a Red Flag Warning FOR WIND AND LOW RELATIVE HUMIDITY, which is in effect from noon to 7 PM MDT Tuesday. The Fire Weather Watch is no longer in effect. * Affected Area...Fire Weather Zones 213 and 214. * Winds...Southwest 15 to 25 mph with gusts up to 40 mph. * Timing...Through this afternoon, then easing at sunset. Fire danger increases again Tuesday afternoon. * Relative Humidity...As low as 10 percent. * Impacts...Conditions will be favorable for the rapid ignition, growth, and spread of fires 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. && $$ COZ212-216-241-246-247-010100- /O.CON.KBOU.FW.W.0009.000000T0000Z-191001T0100Z/ South and Southeast Grand/West Central and Southwest Boulder/ Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet- Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below 9000 Feet- Elbert/Central and East Douglas Counties Above 6000 Feet- North and Northeast Elbert County Below 6000 Feet/North Lincoln County- Southeast Elbert County Below 6000 Feet/South Lincoln County- 312 PM MDT Mon Sep 30 2019 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE CENTRAL MOUNTAINS... SOUTHERN FRONT RANGE FOOTHILLS...PALMER DIVIDE...AND ADJACENT PLAINS SOUTHEAST OF I-76... * Affected Area...Fire Weather Zones 212...216...241...246 and 247. * Winds...Southwest 15 to 25 mph with gusts up to 40 mph. * Timing...Winds are expected to remain gusty through this afternoon before decreasing by dark. * Relative Humidity...As low as 10 percent. * Impacts...Conditions will be favorable for the rapid ignition, growth, and spread of fires. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$
792 WWUS85 KBOU 010122 RFWBOU URGENT - FIRE WEATHER MESSAGE National Weather Service Denver/Boulder CO 722 PM MDT Mon Sep 30 2019 ...FIRE DANGER WILL REMAIN HIGH ACROSS THE MOUNTAINS AND HIGH VALLEYS FOR TUESDAY AND WEDNESDAY... COZ213-214-010930- /O.EXP.KBOU.FW.W.0009.000000T0000Z-191001T0100Z/ /O.CON.KBOU.FW.W.0010.191001T1800Z-191002T0100Z/ Grand and Summit Counties Below 9000 Feet- Central and Southeast Park County- 722 PM MDT Mon Sep 30 2019 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 7 PM MDT TUESDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR MIDDLE PARK AND SOUTH PARK... * Affected Area...Fire Weather Zones 213 and 214. * Winds...South 10 to 20 mph with gusts up to 35 mph. * Timing...Through this afternoon, then easing at sunset. Fire danger increases again Tuesday afternoon. * Relative Humidity...As low as 9 percent. * Impacts...Conditions will be favorable for the rapid ignition, growth, and spread of fires 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. && $$ COZ212-216-241-246-247-010230- /O.EXP.KBOU.FW.W.0009.000000T0000Z-191001T0100Z/ South and Southeast Grand/West Central and Southwest Boulder/ Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet- Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below 9000 Feet- Elbert/Central and East Douglas Counties Above 6000 Feet- North and Northeast Elbert County Below 6000 Feet/North Lincoln County- Southeast Elbert County Below 6000 Feet/South Lincoln County- 722 PM MDT Mon Sep 30 2019 ...RED FLAG WARNING WHICH WAS IN EFFECT MONDAY HAS EXPIRED FOR WIND AND LOW RELATIVE HUMIDITY FOR THE CENTRAL MOUNTAINS... SOUTHERN FRONT RANGE FOOTHILLS...PALMER DIVIDE...AND ADJACENT PLAINS SOUTHEAST OF I-76... Strong southwest winds will continue to decrease through the evening hours with relative humidity expected to gradually increase through the overnight period. $$
What forecasters said that day
The local office's own words before this red flag warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Denver/Boulder, CO wrote its last area forecast discussion before this red flag warning went out at Sep 29, 3:47 AM MDT, 9 minutes earlier.
Area forecast discussion, Sep 29, 3:47 AM MDT, 9 minutes before
Area Forecast Discussion National Weather Service Denver/Boulder CO 347 AM MDT Sun Sep 29 2019 .SHORT TERM...(Today and tonight) Issued at 317 AM MDT Sun Sep 29 2019 A Red Flag Warning is in effect for much of our CWA today as there will be elevated to critical fire danger. More information on this threat can be found below in the fire weather discussion. There are a few pockets of fog this morning mainly near the Colorado/Nebraska border. Dry air seems to be effectively mixing down towards the surface as clouds are eroding. The extent of the fog is not widespread enough for a Dense Fog Advisory at this time. A highly amplified pattern has setup across the US with a trough over the west and ridge over the east. Colorado will in between these features today and will be under strong, dry southwesterly flow. Water vapor shows a dry intrusion nearing Las Vegas this morning which is the main shortwave trough that will rotate northeastward and produce strong lee cyclogenesis over Wyoming. The combination of a deep surface low, a strong mid level jet stream and warm temperatures allowing for deep mixing, will create wind gusts up to 45 mph over the plains and 60 mph over the higher terrain this afternoon. Winds gusting to 48 mph at Rifle this morning are an indication that these winds are well on their way. Highs will be well above normal and will likely reach the upper 80s in Denver. A couple spots in the South Platter River Valley may even reach 90. Dry conditions are expected everywhere in the CWA except for the Park Range where a couple showers can't be ruled out. Tonight, there will be mild conditions before a weak cold front sags into northern Colorado during the early morning hours. This front is not expected to create precipitation as moisture will only slightly increase behind the front. .LONG TERM...(Monday through Saturday) Issued at 317 AM MDT Sun Sep 29 2019 An upper level trough, over the nwrn US, will begin to elongate on Mon from the nrn Rockies back into wrn areas of the Great Basin. This will leave generally dry southwest flow aloft over the area. At the sfc, low pres will be near Denver as a cool front stalls from near Denver to Akron. North of the front, highs will drop into the 70's while south of it readings will range from the 80's to around 90. For Mon night into Tue, the elongated upper level trough will move slowly eastward, with mainly dry southwest flow aloft remaining in place. Meanwhile, there will be a stronger surge of cooler air moving across nern CO as upslope flow develops east of the divide. Soundings still show potential for very light rain/drizzle overnight thru Tue morning from the foothills across portions of the plains. In addition, it looks like low level cloud cover may linger thru the aftn as well, from the foothills across the plains. As a result highs over nern CO may range from the upper 40s near the WY-NE border with mainly 50s elsewhere. By Tue night, there are some significant differences between the models, as to potential for precip across the plains. The GFS doesn't show much precip overnight while the ECMWF has better coverage of light showers. The ECMWF does has a weak disturbance moving across with some mid level ascent. In addition, it has the right exit region of an upper jet, possibly affecting nern CO as well. At this point will not yo-yo fcst and keep in a good chc of light showers across the plains. For Wed thru Wed night, the srn portion of the elongated upper level trough will move across the area. Once again the ECMWF and GFS diverge on precip potential mainly across the plains. As the trough moves across, there will be another shot of mid level ascent late in the aftn thru Wed evening. The ECMWF generates another round of light precip across the plains Wed evening while the GFS has nothing. For now will keep in a chc of precip based on the ECMWF solution. As for highs, readings will remain below normal with temps in the mid 50s to lower 60s over nern CO. Looking ahead to Thu, drier air will spread across, as the upper level trough moves eastward. By Fri, the flow aloft will become southwesterly as a weaker upper level trough approaches from the western US. There may be enough moisture embedded in the flow to produce a slight chc of showers over the higher terrain. Temperatures will rise back to seasonal levels by Fri. && .AVIATION...(For the 12Z TAFS through 12Z Monday morning) Issued at 317 AM MDT Sun Sep 29 2019 VFR conditions will continue through Sunday night. A boundary recently shifted winds northwesterly at DEN and cooled temperatures 10 degrees. With the dew point depressions around 2 degrees behind this boundary, there remains a chance that fog develops over DEN this morning shortly before sunrise. However, this chance is low since warm, dry air seems to be mixing down to the low levels as evidenced by the clouds eroding across the northeast plains this morning. The main issue today will be how strong the wind gusts get. Since gusts reached 40 knots at DEN yesterday and with the trough moving closer to Colorado today, it should be windier. Brief gusts may reach into the low 40s. Otherwise, winds will return toward drainage tomorrow night. && .FIRE WEATHER... Issued at 317 AM MDT Sun Sep 29 2019 There is high confidence that widespread critical fire weather conditions will develop this afternoon. The warm and dry southwesterly flow will allow relative humidities to drop to as low as 10 percent over the plains and 13 percent over the higher terrain. Winds will be sustained between 20-30 mph with gusts up to 45 mph over the plains and up to 60 mph across higher terrain. Nearly all locations in our CWA will be under the Red Flag Warning except for some of the northern tier of counties. One change that was made to the forecast was to include Logan and northeast Weld Counties to the warning. This is because clouds have eroded due to dry air mixing down toward the surface this morning. This should allow for more sunshine throughout the day resulting in better mixing and warmer and windier conditions than originally expected. Fire Danger will remain critical over Middle and South Parks, the southern Foothills and across nern CO, south and southeast of a Denver to Akron line on Monday, due to gusty south to southwest winds and low humidity. A cold front will move across nern CO Mon night and will bring much cooler temperatures and higher humidity on Tuesday, across the Foothills and plains. However along and west of the divide it will remain dry and windy with high fire danger expected for Tuesday afternoon across the higher valleys. && .BOU WATCHES/WARNINGS/ADVISORIES... Red Flag Warning from noon today to 7 PM MDT this evening for COZ212>214-216-239>249. Red Flag Warning from noon to 7 PM MDT Monday for COZ212>214-216- 241-245>247-249. && SHORT TERM...Danielson LONG TERM...RPK AVIATION...Danielson FIRE WEATHER...Danielson/RPK
Hazardous weather outlook, Sep 28, 10:48 AM MDT, 17 hours 8 minutes before
Hazardous Weather Outlook National Weather Service Denver/Boulder CO 1048 AM MDT Sat Sep 28 2019 COZ030>051-291700- Jackson County Below 9000 Feet- West Jackson and West Grand Counties Above 9000 Feet- Grand and Summit Counties Below 9000 Feet- South and East Jackson/Larimer/North and Northeast Grand/ Northwest Boulder Counties Above 9000 Feet- South and Southeast Grand/West Central and Southwest Boulder/ Gilpin/Clear Creek/Summit/North and West Park Counties Above 9000 Feet-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- Central and Southeast Park County- Larimer County Below 6000 Feet/Northwest Weld County- 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- Northeast Weld County-Central and South Weld County-Morgan County- Central and East Adams and Arapahoe Counties- North and Northeast Elbert County Below 6000 Feet/North Lincoln County- Southeast Elbert County Below 6000 Feet/South Lincoln County- Logan County-Washington County-Sedgwick County-Phillips County- 1048 AM MDT Sat Sep 28 2019 ...Red Flag Warning for portions of the higher terrain and plains on Sunday from noon until 7 pm... ...Fire Weather Watch for portions of the higher terrain and plains Monday afternoon through early Monday evening... This hazardous weather outlook is for northeast and north central Colorado. .DAY ONE...Today and Tonight Areas of fog will continue over northern Larimer County for the rest of the morning, impacting drivers along Highway 287. A few showers may be possible over the far eastern plains into the early afternoon as well as over the mountains, otherwise a windy day is in store. Gusty winds up to 40 mph in the mountains and 25 to 35 mph over the plains will be possible all day and overnight, with only slight weakening overnight. Areas of dense fog may creep into the far northeastern corner after midnight. .DAYS TWO THROUGH SEVEN...Sunday through Friday Critical fire danger will be in place Sunday afternoon and early evening due to gusty winds and low humidity levels across portions of the higher terrain and plains. Southwest winds will gust from 50 to 60 mph at times over the higher terrain with 35 to 50 mph across portions of the plains. Critical fire danger may occur again Monday afternoon due to gusty southwest winds and low humidity levels across portions of the higher terrain and plains. Fire danger will decrease east of the divide on Tuesday as a cold front moves across northeast Colorado. However, west of the divide fire danger will remain elevated. There will be a good chance of showers across portions of the plains Tuesday night and again Wednesday night. Over the higher terrain rain chances will be lower. Thursday looks dry across the forecast area with moisture increasing on Friday and a chance of late day showers and thunderstorms for most areas. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed today or tonight.
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 29, 7:46 AM MDT | Special Weather Statement | BOU | Broomfield | 59 min |
Nearby
Red Flag Warnings in Colorado, 2019Every red flag warning in 2019
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.