Alert archive / Colorado / Red Flag Warnings in 2012
Red Flag Warning 20, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this red flag warning at Jun 18, 2012, 3:12 PM MDT for 10 counties in Colorado. It took effect at Jun 19, 2012, 3:10 AM MDT. It was in force for 18 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
- Jun 18, 2012, 3:12 PM MDT (21:12 UTC)
- In effect from
- Jun 19, 2012, 3:10 AM MDT
- Expired
- Jun 19, 2012, 9:00 PM MDT
- In force
- 18 hr
- Issued by
- NWS Denver/Boulder, CO
Counties Boulder County, CO, Clear Creek County, CO, Douglas County, CO, Gilpin County, CO, Grand County, CO, Jackson County, CO, Jefferson County, CO, Larimer County, CO, Park County, CO, Summit County, CO
The radar
The Denver radar (KFTG), 94 km from the middle of the area, began a volume at 21:13 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 12:00Z, 9.2 hours before the alert went out and 206 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 5215 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 24 m²/s²
- 0-3 km storm-relative helicity
- 81 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
181 WWUS85 KBOU 182112 RFWBOU URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER CO 312 PM MDT MON JUN 18 2012 ...EXTREME FIRE BEHAVIOR POSSIBLE DUE TO HOT TEMPERATURES... EXTREMELY LOW HUMIDITIES...AND BREEZY CONDITIONS... RECORD HEAT COMBINED WITH EXTREMELY LOW HUMIDITIES AND BREEZY CONDITIONS WILL CONTINUE TO ALLOW FOR EXTREME FIRE BEHAVIOR THE REST OF THIS AFTERNOON. HUMIDITIES WILL DROP BELOW 5 PERCENT IN MOST AREAS. OVERALL THE WIND IS EXPECTED TO DECREASE LATE THIS AFTERNOON AND THIS EVENING...WITH SOME POOR RECOVERY IN RELATIVE HUMIDITIES OVERNIGHT. ANOTHER DAY OF CRITICAL FIRE WEATHER CONDITIONS IS EXPECTED ON TUESDAY. AFTER THE PASSAGE OF A WEAK COLD FRONT IN THE MORNING...THE TEMPERATURES WILL NOT BE AS HOT BUT STILL WELL ABOVE NORMAL. OVERALL THE WIND WILL NOT BE AS STRONG AS TODAY. THE GUSTY WINDS WILL BE MOST PREVALENT IN ZONES 211 THROUGH 213...217 AND 218. COZ211>218-190515- /O.UPG.KBOU.FW.A.0010.120619T1600Z-120620T0300Z/ /O.NEW.KBOU.FW.W.0020.120619T1600Z-120620T0300Z/ /O.CON.KBOU.FW.W.0019.000000T0000Z-120619T0300Z/ JACKSON COUNTY BELOW 9000 FEET- 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- 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- WEST JACKSON AND WEST GRAND COUNTIES ABOVE 9000 FEET- SOUTH AND EAST JACKSON/LARIMER/NORTH AND NORTHEAST GRAND/ NORTHWEST BOULDER COUNTIES ABOVE 9000 FEET- 312 PM MDT MON JUN 18 2012 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING FOR WIND AND EXTREMELY LOW RELATIVE HUMIDITY FOR THE MOUNTAINS... HIGH VALLEYS...AND FRONT RANGE FOOTHILLS... ...RED FLAG WARNING IN EFFECT FROM 10 AM TO 9 PM MDT TUESDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR THE MOUNTAINS...HIGH VALLEYS AND FRONT RANGE FOOTHILLS... THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A RED FLAG WARNING FOR WIND AND LOW RELATIVE HUMIDITY...WHICH IS IN EFFECT FROM 10 AM TO 9 PM MDT TUESDAY. THE FIRE WEATHER WATCH IS NO LONGER IN EFFECT. * AFFECTED AREA...FIRE WEATHER ZONES 211...212...213...214... 215...216...217 AND 218. * TIMING...RED FLAG CONDITIONS WILL CONTINUE THROUGH THIS EVENING. ONLY POOR HUMIDITY RECOVER IS EXPECTED TONIGHT WITH RED FLAG CONDITIONS REDEVELOPING ON TUESDAY. * WINDS...WEST TO SOUTHWEST 15 TO 25 MPH WITH GUSTS TO 35 MPH...STRONGEST IN ZONES 211 THROUGH 213...217 AND 218. * RELATIVE HUMIDITY...AS LOW AS 5 PERCENT LATE THIS AFTERNOON...6 TO 12 PERCENT TUESDAY AFTERNOON * IMPACTS...THE HOT...EXTREMELY DRY...AND BREEZY CONDITIONS WILL ALLOW EXTREME FIRE BEHAVIOR ON ALREADY EXISTING WILDFIRES. ANY NEW FIRE STARTS WILL BE DIFFICULT TO CONTROL WITH HIGH RATES OF SPREAD. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING OR IMMINENT. PLEASE ADVISE THE APPROPRIATE OFFICIALS AND FIRE CREWS IN THE FIELD OF THIS RED FLAG WARNING. && $$ COZ238-239-190300- /O.CON.KBOU.FW.W.0019.000000T0000Z-120619T0300Z/ LARIMER COUNTY BELOW 6000 FEET/NORTHWEST WELD COUNTY- BOULDER AND JEFFERSON COUNTIES BELOW 6000 FEET/WEST BROOMFIELD COUNTY- 312 PM MDT MON JUN 18 2012 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING FOR WIND AND EXTREMELY LOW RELATIVE HUMIDITY FOR PORTIONS OF THE FRONT RANGE URBAN CORRIDOR WEST OF I-25... * AFFECTED AREA...FIRE WEATHER ZONES 238 AND 239. * TIMING...RED FLAG CONDITIONS WILL CONTINUE INTO EARLY EVENING. WINDS WILL THEN DECREASE WITH ONLY SLIGHT IMPROVEMENT IN HUMIDITIES. * WINDS...SOUTHWEST 5 TO 15 MPH WITH GUSTS UP TO 30 MPH. * RELATIVE HUMIDITY...AS LOW AS 4 PERCENT. * IMPACTS...THE HOT...EXTREMELY DRY...AND BREEZY CONDITIONS WILL ALLOW EXTREME FIRE BEHAVIOR ON ALREADY EXISTING WILDFIRES. ANY NEW FIRE STARTS WILL BE DIFFICULT TO CONTROL WITH HIGH RATES OF SPREAD. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING OR IMMINENT. PLEASE ADVISE THE APPROPRIATE OFFICIALS AND FIRE CREWS IN THE FIELD OF THIS RED FLAG WARNING. && $$
5 follow-up statements
609 WWUS85 KBOU 190241 RFWBOU URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER CO 841 PM MDT MON JUN 18 2012 ...EXTREME FIRE BEHAVIOR POSSIBLE DUE TO VERY WARM TEMPERATURES... LOW HUMIDITIES...AND BREEZY CONDITIONS ON TUESDAY... RECORD HEAT COMBINED WITH EXTREMELY LOW HUMIDITIES AND BREEZY CONDITIONS BROUGHT RED FLAG CONDITIONS EARLIER TODAY. THE WIND HAS DECREASED THIS EVENING...THEREFORE THE RED FLAG WARNING FOR MONDAY HAS BEEN ALLOWED TO EXPIRE. THERE WILL BE POOR RELATIVE HUMIDITY RECOVERY OVERNIGHT. ANOTHER DAY OF CRITICAL FIRE WEATHER CONDITIONS IS EXPECTED ON TUESDAY. AFTER THE PASSAGE OF A WEAK COLD FRONT IN THE MORNING... THE TEMPERATURES WILL NOT BE AS HOT BUT STILL WELL ABOVE NORMAL. OVERALL THE WIND WILL NOT BE AS STRONG AS TODAY. THE GUSTY WINDS WILL BE MOST PREVALENT IN THE MOUNTAINS AND MOUNTAIN VALLEYS. COZ211>218-191200- /O.EXP.KBOU.FW.W.0019.000000T0000Z-120619T0300Z/ /O.CON.KBOU.FW.W.0020.120619T1600Z-120620T0300Z/ JACKSON COUNTY BELOW 9000 FEET- 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- 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- WEST JACKSON AND WEST GRAND COUNTIES ABOVE 9000 FEET- SOUTH AND EAST JACKSON/LARIMER/NORTH AND NORTHEAST GRAND/ NORTHWEST BOULDER COUNTIES ABOVE 9000 FEET- 841 PM MDT MON JUN 18 2012 ...RED FLAG WARNING REMAINS IN EFFECT FROM 10 AM TO 9 PM MDT TUESDAY FOR WIND AND EXTREMELY LOW RELATIVE HUMIDITY FOR THE MOUNTAINS...HIGH VALLEYS...AND FRONT RANGE FOOTHILLS... ...RED FLAG WARNING WILL EXPIRE AT 9 PM MDT THIS EVENING FOR WIND AND EXTREMELY LOW RELATIVE HUMIDITY FOR THE MOUNTAINS...HIGH VALLEYS...AND FRONT RANGE FOOTHILLS... * AFFECTED AREA...FIRE WEATHER ZONES 211...212...213...214... 215...216...217 AND 218. * TIMING...POOR RELATIVE HUMIDITY RECOVERY IS EXPECTED TONIGHT WITH RED FLAG CONDITIONS REDEVELOPING ON TUESDAY. * WINDS...WEST 10 TO 20 MPH WITH GUSTS UP TO 40 MPH. * RELATIVE HUMIDITY...5 TO 10 PERCENT. * IMPACTS...THE VERY WARM...EXTREMELY DRY...AND BREEZY CONDITIONS WILL ALLOW EXTREME FIRE BEHAVIOR ON ALREADY EXISTING WILDFIRES. ANY NEW FIRE STARTS WILL BE DIFFICULT TO CONTROL WITH HIGH RATES OF SPREAD. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING OR IMMINENT. PLEASE ADVISE THE APPROPRIATE OFFICIALS AND FIRE CREWS IN THE FIELD OF THIS RED FLAG WARNING. && $$ COZ238-239-190345- /O.EXP.KBOU.FW.W.0019.000000T0000Z-120619T0300Z/ LARIMER COUNTY BELOW 6000 FEET/NORTHWEST WELD COUNTY- BOULDER AND JEFFERSON COUNTIES BELOW 6000 FEET/WEST BROOMFIELD COUNTY- 841 PM MDT MON JUN 18 2012 ...RED FLAG WARNING WILL EXPIRE AT 9 PM MDT THIS EVENING FOR WIND AND EXTREMELY LOW RELATIVE HUMIDITY FOR PORTIONS OF THE FRONT RANGE URBAN CORRIDOR WEST OF I-25... THE RED FLAG WARNING WILL IS NO LONGER IN EFFECT...DUE TO LIGHT WINDS ACROSS THE FRONT RANGE. $$
094 WWUS85 KBOU 190910 RFWBOU URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER CO 310 AM MDT TUE JUN 19 2012 ...ANOTHER DAY OF CRITICAL FIRE WEATHER CONDITIONS... OBSERVATIONS DURING THE OVERNIGHT HOURS SHOWED VERY POOR HUMIDITY RECOVERY AND A CONTINUATION OF GUSTY WINDS TO AROUND 30 MPH IN THE FRONT RANGE FOOTHILLS. AS A RESULT...THE RED FLAG WARNING FOR THE FRONT RANGE FOOTHILLS WILL GO INTO EFFECT IMMEDIATELY AND CONTINUE THROUGH THIS EVENING. A WEAK COLD FRONT WILL ATTEMPT TO BACK INTO THE FOOTHILLS BUT ESSENTIALLY WASH OUT DURING THE COURSE OF THE DAY WITH ONLY SLIGHT COOLING OF THE AIRMASS. TEMPERATURES WILL REMAIN MUCH ABOVE NORMAL WITH VERY LOW HUMIDITY READINGS. IN THE REST OF THE HIGH COUNTRY INCLUDING THE MOUNTAINS AND HIGH VALLEYS...RED FLAG CONDITIONS WILL DEVELOP LATER THIS MORNING AS TEMPERATURES WARM AND WINDS INCREASE. COZ215-216-191900- /O.EXT.KBOU.FW.W.0020.120619T0910Z-120620T0300Z/ 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- 310 AM MDT TUE JUN 19 2012 ...RED FLAG WARNING NOW IN EFFECT UNTIL 9 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE FRONT RANGE FOOTHILLS... * AFFECTED AREA...FIRE WEATHER ZONES 215 AND 216. * TIMING...POOR RELATIVE HUMIDITY RECOVERY OCCURRED OVERNIGHT AND WINDS REMAINED GUSTY UP TO 30 MPH IN SPOTS. RED FLAG CONDITIONS WILL REMAIN IN PLACE THROUGH EARLY THIS EVENING WITH MUCH ABOVE NORMAL TEMPERATURES...BREEZY CONDITIONS...AND VERY LOW HUMIDITIES. * WINDS...WEST/SOUTHWEST 10 TO 20 MPH WITH GUSTS UP TO 30 MPH. A WEAK COLD FRONT WILL ATTEMPT TO BACK INTO THE FOOTHILLS LATER THIS MORNING WITH A GRADUAL SHIFT TO EAST/SOUTHEAST WINDS. THIS SHIFT SHOULD OCCUR MAINLY BELOW 7000 FEET IN THE FOOTHILLS OF LARIMER AND BOULDER COUNTIES...WHILE ALMOST ALL OF THE JEFFERSON AND DOUGLAS COUNTY FOOTHILLS SHOULD SEE THE GRADUAL WIND SHIFT REGARDLESS OF ELEVATION. * RELATIVE HUMIDITY...6 TO 10 PERCENT. * IMPACTS...THE VERY WARM...EXTREMELY DRY...AND BREEZY CONDITIONS WILL ALLOW EXTREME FIRE BEHAVIOR ON ALREADY EXISTING WILDFIRES. ANY NEW FIRE STARTS WILL BE DIFFICULT TO CONTROL WITH HIGH RATES OF SPREAD POSSIBLE. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING OR IMMINENT. PLEASE ADVISE THE APPROPRIATE OFFICIALS AND FIRE CREWS IN THE FIELD OF THIS RED FLAG WARNING. && $$ COZ211>214-217-218-191900- /O.CON.KBOU.FW.W.0020.120619T1600Z-120620T0300Z/ JACKSON COUNTY BELOW 9000 FEET- SOUTH AND SOUTHEAST GRAND/WEST CENTRAL AND SOUTHWEST BOULDER/ GILPIN/CLEAR CREEK/SUMMIT/NORTH AND WEST PARK COUNTIES ABOVE 9000 FEET-GRAND AND SUMMIT COUNTIES BELOW 9000 FEET- CENTRAL AND SOUTHEAST PARK COUNTY- WEST JACKSON AND WEST GRAND COUNTIES ABOVE 9000 FEET- SOUTH AND EAST JACKSON/LARIMER/NORTH AND NORTHEAST GRAND/ NORTHWEST BOULDER COUNTIES ABOVE 9000 FEET- 310 AM MDT TUE JUN 19 2012 ...RED FLAG WARNING REMAINS IN EFFECT FROM 10 AM THIS MORNING TO 9 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE MOUNTAINS AND HIGH MOUNTAIN VALLEYS... * AFFECTED AREA...FIRE WEATHER ZONES 211...212...213...214... 217 AND 218. * TIMING...LATE MORNING THROUGH MID EVENING. CONDITIONS WILL GRADUALLY IMPROVE BY LATE EVENING WITH WINDS DECREASING AND HUMIDITIES SLOWLY INCREASING. * WINDS...WEST/SOUTHWEST 10 TO 20 MPH WITH GUSTS AROUND 30 MPH. * RELATIVE HUMIDITY...6 TO 10 PERCENT. * IMPACTS...THE VERY WARM...EXTREMELY DRY...AND BREEZY CONDITIONS WILL ALLOW EXTREME FIRE BEHAVIOR ON ALREADY EXISTING WILDFIRES. ANY NEW FIRE STARTS WILL BE DIFFICULT TO CONTROL WITH HIGH RATES OF SPREAD. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING OR IMMINENT. PLEASE ADVISE THE APPROPRIATE OFFICIALS AND FIRE CREWS IN THE FIELD OF THIS RED FLAG WARNING. && $$ BARJENBRUCH
325 WWUS85 KBOU 191640 RFWBOU URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER CO 1040 AM MDT TUE JUN 19 2012 ...ANOTHER DAY OF CRITICAL FIRE WEATHER CONDITIONS... A WEAK COLD FRONT WILL ATTEMPT TO BACK INTO THE FOOTHILLS TODAY BUT WILL ESSENTIALLY WASH OUT WITH ONLY SLIGHT COOLING OF THE AIRMASS. TEMPERATURES WILL REMAIN MUCH ABOVE NORMAL WITH VERY LOW HUMIDITY READINGS. IN THE MOUNTAINS AND HIGH VALLEYS...RED FLAG CONDITIONS CAN AGAIN BE EXPECTED AS TEMPERATURES CLIMB INTO THE 70S AND 80S THIS AFTERNOON AND WINDS INCREASE. COZ211>214-217-218-200045- /O.CON.KBOU.FW.W.0020.000000T0000Z-120620T0300Z/ JACKSON COUNTY BELOW 9000 FEET- 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- WEST JACKSON AND WEST GRAND COUNTIES ABOVE 9000 FEET- SOUTH AND EAST JACKSON/LARIMER/NORTH AND NORTHEAST GRAND/ NORTHWEST BOULDER COUNTIES ABOVE 9000 FEET- 1040 AM MDT TUE JUN 19 2012 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE MOUNTAINS AND HIGH MOUNTAIN VALLEYS... * AFFECTED AREA...FIRE WEATHER ZONES 211...212...213...214... 217 AND 218. * TIMING...LATE MORNING THROUGH MID EVENING. CONDITIONS WILL GRADUALLY IMPROVE BY LATE EVENING WITH WINDS DECREASING AND HUMIDITIES SLOWLY INCREASING. * WINDS...WEST 10 TO 20 MPH WITH GUSTS UP TO 35 MPH. * RELATIVE HUMIDITY...6 TO 10 PERCENT. * IMPACTS...THE VERY WARM...EXTREMELY DRY...AND BREEZY CONDITIONS WILL ALLOW EXTREME FIRE BEHAVIOR ON ALREADY EXISTING WILDFIRES. ANY NEW FIRE STARTS WILL BE DIFFICULT TO CONTROL WITH HIGH RATES OF SPREAD. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING OR IMMINENT. PLEASE ADVISE THE APPROPRIATE OFFICIALS AND FIRE CREWS IN THE FIELD OF THIS RED FLAG WARNING. && $$ COZ215-216-200045- /O.CON.KBOU.FW.W.0020.000000T0000Z-120620T0300Z/ LARIMER AND BOULDER COUNTIES BETWEEN 6000 AND 9000 FEET- JEFFERSON AND WEST DOUGLAS COUNTIES ABOVE 6000 FEET/GILPIN/CLEAR CREEK/NORTHEAST PARK COUNTIES BELOW 9000 FEET- 1040 AM MDT TUE JUN 19 2012 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE FRONT RANGE FOOTHILLS... * AFFECTED AREA...FIRE WEATHER ZONES 215 AND 216. * TIMING...RED FLAG CONDITIONS WILL REMAIN IN PLACE THROUGH EARLY THIS EVENING WITH MUCH ABOVE NORMAL TEMPERATURES...BREEZY CONDITIONS...AND VERY LOW HUMIDITIES. * WINDS...WEST/SOUTHWEST 10 TO 20 MPH WITH GUSTS UP TO 30 MPH. A WEAK COLD FRONT WILL ATTEMPT TO BACK INTO THE FOOTHILLS THIS MORNING WITH A GRADUAL SHIFT TO EAST/SOUTHEAST WINDS. THIS SHIFT SHOULD OCCUR MAINLY BELOW 7000 FEET IN THE FOOTHILLS OF LARIMER AND BOULDER COUNTIES...WHILE ALMOST ALL OF THE JEFFERSON AND DOUGLAS COUNTY FOOTHILLS SHOULD SEE THE GRADUAL WIND SHIFT REGARDLESS OF ELEVATION. * RELATIVE HUMIDITY...6-10 PERCENT. * IMPACTS...THE VERY WARM...EXTREMELY DRY...AND BREEZY CONDITIONS WILL ALLOW EXTREME FIRE BEHAVIOR ON ALREADY EXISTING WILDFIRES. ANY NEW FIRE STARTS WILL BE DIFFICULT TO CONTROL WITH HIGH RATES OF SPREAD POSSIBLE. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING OR IMMINENT. PLEASE ADVISE THE APPROPRIATE OFFICIALS AND FIRE CREWS IN THE FIELD OF THIS RED FLAG WARNING. && $$
848 WWUS85 KBOU 200023 RFWBOU URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER CO 623 PM MDT TUE JUN 19 2012 COZ211>214-217-218-200300- /O.CON.KBOU.FW.W.0020.000000T0000Z-120620T0300Z/ JACKSON COUNTY BELOW 9000 FEET- 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- WEST JACKSON AND WEST GRAND COUNTIES ABOVE 9000 FEET- SOUTH AND EAST JACKSON/LARIMER/NORTH AND NORTHEAST GRAND/ NORTHWEST BOULDER COUNTIES ABOVE 9000 FEET- 623 PM MDT TUE JUN 19 2012 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE MOUNTAINS AND HIGH MOUNTAIN VALLEYS... * AFFECTED AREA...FIRE WEATHER ZONES 211...212...213...214... 217 AND 218. * TIMING...CONDITIONS WILL GRADUALLY IMPROVE BY LATER THIS EVENING WITH WINDS DECREASING AND HUMIDITIES SLOWLY INCREASING. * WINDS...WEST 10 TO 20 MPH WITH GUSTS UP TO 30 MPH WEST OF THE DIVIDE. * RELATIVE HUMIDITY...8 TO 12 PERCENT. * IMPACTS...THE VERY WARM...EXTREMELY DRY...AND BREEZY CONDITIONS WILL ALLOW EXTREME FIRE BEHAVIOR ON ALREADY EXISTING WILDFIRES. ANY NEW FIRE STARTS WILL BE DIFFICULT TO CONTROL WITH HIGH RATES OF SPREAD. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING OR IMMINENT. PLEASE ADVISE THE APPROPRIATE OFFICIALS AND FIRE CREWS IN THE FIELD OF THIS RED FLAG WARNING. && $$ COZ215-216-200300- /O.CON.KBOU.FW.W.0020.000000T0000Z-120620T0300Z/ LARIMER AND BOULDER COUNTIES BETWEEN 6000 AND 9000 FEET- JEFFERSON AND WEST DOUGLAS COUNTIES ABOVE 6000 FEET/GILPIN/CLEAR CREEK/NORTHEAST PARK COUNTIES BELOW 9000 FEET- 623 PM MDT TUE JUN 19 2012 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE FRONT RANGE FOOTHILLS... * AFFECTED AREA...FIRE WEATHER ZONES 215 AND 216. * TIMING...RED FLAG CONDITIONS WILL REMAIN IN PLACE THROUGH EARLY THIS EVENING WITH MUCH ABOVE NORMAL TEMPERATURES... BREEZY CONDITIONS...AND VERY LOW HUMIDITIES. * WINDS...EAST TO SOUTHEAST 15 TO 25 MPH UNTIL 2300...THEN SHIFTING NORTHWEST AT 10-22 MPH. * RELATIVE HUMIDITY...9 TO 15 PERCENT. * IMPACTS...THE VERY WARM...EXTREMELY DRY...AND BREEZY CONDITIONS WILL ALLOW EXTREME FIRE BEHAVIOR ON ALREADY EXISTING WILDFIRES. ANY NEW FIRE STARTS WILL BE DIFFICULT TO CONTROL WITH HIGH RATES OF SPREAD POSSIBLE. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING OR IMMINENT. PLEASE ADVISE THE APPROPRIATE OFFICIALS AND FIRE CREWS IN THE FIELD OF THIS RED FLAG WARNING. && $$
050 WWUS85 KBOU 200248 RFWBOU URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER CO 848 PM MDT TUE JUN 19 2012 COZ211>214-217-218-200400- /O.EXP.KBOU.FW.W.0020.000000T0000Z-120620T0300Z/ JACKSON COUNTY BELOW 9000 FEET- 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- WEST JACKSON AND WEST GRAND COUNTIES ABOVE 9000 FEET- SOUTH AND EAST JACKSON/LARIMER/NORTH AND NORTHEAST GRAND/ NORTHWEST BOULDER COUNTIES ABOVE 9000 FEET- 848 PM MDT TUE JUN 19 2012 ...RED FLAG WARNING WILL EXPIRE AT 9 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE MOUNTAINS AND HIGH MOUNTAIN VALLEYS... HUMIDITIES HAVE SLOWLY INCREASED THIS EVENING WHILE THE SOUTHWEST WINDS ARE GENERALLY BELOW 20 MPH. THE WINDS WILL SHIFT TO THE WEST AND NORTHWEST OVERNIGHT. $$ COZ215-216-200400- /O.EXP.KBOU.FW.W.0020.000000T0000Z-120620T0300Z/ LARIMER AND BOULDER COUNTIES BETWEEN 6000 AND 9000 FEET- JEFFERSON AND WEST DOUGLAS COUNTIES ABOVE 6000 FEET/GILPIN/CLEAR CREEK/NORTHEAST PARK COUNTIES BELOW 9000 FEET- 848 PM MDT TUE JUN 19 2012 ...RED FLAG WARNING WILL EXPIRE AT 9 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE FRONT RANGE FOOTHILLS... SURFACE WINDS ARE GENERALLY UNDER 15 MPH OVER THE FOOTHILLS WHILE HUMIDITIES HAVE SLOWLY RECOVERED AND ARE UP ABOVE 15 PERCENT THIS EVENING. WINDS WILL SHIFT TO THE WEST AND NORTHWEST AFTER MIDNIGHT BUT SPEEDS SHOULD GENERALLY BE UNDER 30 MPH. $$
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 18, 4:59 AM MDT | Fire Weather Watch | BOU | Boulder, Clear Creek, Douglas, Gilpin, Grand, Jackson and 4 more | 10 hr |
Nearby
Red Flag Warnings in Colorado, 2012Every red flag warning in 2012
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.