Alert archive / Colorado / Red Flag Warnings in 2012
Red Flag Warning 26, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this red flag warning at Aug 15, 2012, 3:07 AM MDT for 7 counties in Colorado. It took effect at Aug 15, 2012, 12:00 PM MDT. It was in force for 6 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
- Aug 15, 2012, 3:07 AM MDT (09:07 UTC)
- In effect from
- Aug 15, 2012, 12:00 PM MDT
- Expired
- Aug 15, 2012, 6:02 PM MDT
- In force
- 6 hr
- Issued by
- NWS Denver/Boulder, CO
Counties Larimer County, CO, Logan County, CO, Morgan County, CO, Phillips County, CO, Sedgwick County, CO, Washington County, CO, Weld County, CO
The radar
The Denver radar (KFTG), 119 km from the middle of the area, began a volume at 09:08 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 (KDEN), launched 00:00Z, 9.1 hours before the alert went out and 77 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
- 233 J/kg
- Mixed-layer CIN
- -33 J/kg
- Mixed-layer LCL
- 3619 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- -19 m²/s²
- 0-3 km storm-relative helicity
- 76 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
610 WWUS85 KBOU 150907 RFWBOU URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER CO 307 AM MDT WED AUG 15 2012 ...DRY AND BREEZY THIS AFTERNOON ON THE NORTHEAST PLAINS... .A COLD FRONT WILL MOVE ACROSS NORTHEASTERN COLORADO THIS AFTERNOON. IT WILL BE HOT AND DRY AHEAD OF THE FRONT AT MIDDAY...THEN THE WIND WILL SHIFT TO THE NORTH WITH GUSTY WINDS. BY LATE AFTERNOON IT WILL BE COOLER WITH HIGHER HUMIDITIES...BUT THE FIRE DANGER WILL BE ELEVATED DURING THE WINDY PERIOD AS THE FRONT MOVES THROUGH. COZ238-242>244-248>251-151800- /O.NEW.KBOU.FW.W.0026.120815T1800Z-120816T0000Z/ LARIMER COUNTY BELOW 6000 FEET/NORTHWEST WELD COUNTY- NORTHEAST WELD COUNTY-CENTRAL AND SOUTH WELD COUNTY-MORGAN COUNTY- LOGAN COUNTY-WASHINGTON COUNTY-SEDGWICK COUNTY-PHILLIPS COUNTY- 307 AM MDT WED AUG 15 2012 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 6 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE NORTHEAST PLAINS OF COLORADO... 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 6 PM MDT THIS EVENING. * AFFECTED AREA...FIRE WEATHER ZONES 238...242...243...244... 248...249...250 AND 251. * TIMING...HOT AND DRY CONDITIONS WILL DEVELOP BY MIDDAY WITH GUSTY NORTH WINDS DEVELOPING DURING THE AFTERNOON. * WINDS...NORTH 10 TO 20 MPH WITH GUSTS UP TO 35 MPH. * RELATIVE HUMIDITY...AS LOW AS 13 PERCENT. * IMPACTS...FIRES WILL START MORE EASILY TODAY AND WILL SPREAD RAPIDLY DUE TO THE DRY FUELS AND STRONG WINDS. 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. && $$ GIMMESTAD
2 follow-up statements
586 WWUS85 KBOU 151758 RFWBOU URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER CO 1158 AM MDT WED AUG 15 2012 ...DRY AND BREEZY THIS AFTERNOON ON THE NORTHEAST PLAINS... .GUSTY NORTH WINDS BEHIND COLD FRONT MOVING ACROSS NORTHEASTERN COLORADO THIS AFTERNOON WILL COMBINE WITH THE HOT AND DRY DAY TO ELEVATE FIRE DANGER. BY LATE AFTERNOON IT WILL BE COOLER WITH HIGHER HUMIDITIES...BUT THE FIRE DANGER WILL BE ELEVATED DURING THE WINDY PERIOD AS THE FRONT MOVES THROUGH. COZ238-242>244-248>251-160000- /O.CON.KBOU.FW.W.0026.120815T1800Z-120816T0000Z/ LARIMER COUNTY BELOW 6000 FEET/NORTHWEST WELD COUNTY- NORTHEAST WELD COUNTY-CENTRAL AND SOUTH WELD COUNTY-MORGAN COUNTY- LOGAN COUNTY-WASHINGTON COUNTY-SEDGWICK COUNTY-PHILLIPS COUNTY- 1158 AM MDT WED AUG 15 2012 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE NORTHEAST PLAINS OF COLORADO... * AFFECTED AREA...FIRE WEATHER ZONES 238...242...243...244... 248...249...250 AND 251. * TIMING...THE FRONT IS CURRENTLY ON THE COLORADO AND WYOMING BORDER AND WILL MOVE SOUTH THROUGH THE REST OF THE AREA THROUGH LATE AFTERNOON. * WINDS...NORTH 10 TO 20 MPH WITH GUSTS UP TO 35 MPH. * RELATIVE HUMIDITY...AS LOW AS 13 PERCENT. * IMPACTS...FIRES WILL START MORE EASILY TODAY AND WILL SPREAD RAPIDLY DUE TO THE DRY FUELS AND STRONG WINDS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING OR IMMINENT. PLEASE ADVISE THE APPROPRIATE OFFICIALS AND FIRE CREWS IN THE FIELD OF THIS RED FLAG WARNING. && $$
503 WWUS85 KBOU 160002 RFWBOU URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER CO 602 PM MDT WED AUG 15 2012 COZ238-242>244-248>251-160115- /O.CAN.KBOU.FW.W.0026.000000T0000Z-120816T0000Z/ LARIMER COUNTY BELOW 6000 FEET/NORTHWEST WELD COUNTY- NORTHEAST WELD COUNTY-CENTRAL AND SOUTH WELD COUNTY-MORGAN COUNTY- LOGAN COUNTY-WASHINGTON COUNTY-SEDGWICK COUNTY-PHILLIPS COUNTY- 602 PM MDT WED AUG 15 2012 ...RED FLAG WARNING IS CANCELLED FOR WIND AND LOW RELATIVE HUMIDITY FOR... THE NATIONAL WEATHER SERVICE IN DENVER HAS CANCELLED THE RED FLAG WARNING. A COLD FRONT HAS MOVED INTO NORTHEAST COLORADO WITH COOLER TEMPERATURES AND HIGHER RELATIVE HUMIDITIES. THE THREAT OF DANGEROUS FIRE BEHAVIORS HAS DIMINISHED. GUSTY NORTHEAST WINDS ARE EXPECTED TO CONTINUE THIS EVENING...BUT TEMPERATURES WILL CONTINUE DROPPING AND HUMIDITY LEVELS WILL ALSO CONTINUE INCREASING. $$
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.