Alert archive / Colorado / Red Flag Warnings in 2012
Red Flag Warning 30, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this red flag warning at Aug 31, 2012, 9:15 AM MDT for 14 counties in Colorado. It took effect at Aug 31, 2012, 10:00 AM MDT. It was in force for 10 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 31, 2012, 9:15 AM MDT (15:15 UTC)
- In effect from
- Aug 31, 2012, 10:00 AM MDT
- Expired
- Aug 31, 2012, 7:54 PM MDT
- In force
- 10 hr
- Issued by
- NWS Denver/Boulder, CO
Counties Adams County, CO, Arapahoe County, CO, Broomfield County, CO, Denver County, CO, Douglas County, CO, Elbert County, CO, Larimer County, CO, Lincoln County, CO, Logan County, CO, Morgan County, CO, Phillips County, CO, Sedgwick County, CO, Washington County, CO, Weld County, CO
The nearest sounding before it
Denver, CO (KDEN), launched 12:00Z, 3.3 hours before the alert went out and 67 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
- 2779 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 52 m²/s²
- 0-3 km storm-relative helicity
- 5 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
243 WWUS85 KBOU 311515 RFWBOU URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER CO 915 AM MDT FRI AUG 31 2012 ...RED FLAG WARNING FOR THE PALMER DIVIDE AND NORTHEAST PLAINS OF COLORADO... .WARM AND WINDY CONDITIONS WILL RETURN TO THE NORTHEASTERN PLAINS OF COLORADO AS WELL AS THE PALMER DIVIDE TODAY. GUSTY SOUTHERLY WINDS WILL COMBINE WITH HUMIDITIES IN THE LOW TEENS CREATING CRITICAL FIRE WEATHER CONDITIONS THROUGH EARLY EVENING. COZ241-242-244>246-248>251-312300- /O.NEW.KBOU.FW.W.0030.120831T1600Z-120901T0200Z/ ELBERT/CENTRAL AND EAST DOUGLAS COUNTIES ABOVE 6000 FEET- NORTHEAST WELD COUNTY-MORGAN COUNTY- CENTRAL AND EAST ADAMS AND ARAPAHOE COUNTIES- NORTH AND NORTHEAST ELBERT COUNTY BELOW 6000 FEET/NORTH LINCOLN COUNTY-LOGAN COUNTY-WASHINGTON COUNTY-SEDGWICK COUNTY- PHILLIPS COUNTY- 915 AM MDT FRI AUG 31 2012 ...RED FLAG WARNING IN EFFECT UNTIL 8 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE PALMER DIVIDE AND THE NORTHEASTERN 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 UNTIL 8 PM MDT THIS EVENING. * AFFECTED AREA...FIRE WEATHER ZONES 241...242...244...245... 246...248...249...250 AND 251. * TIMING...HOT AND DRY CONDITIONS WILL BEGIN LATE THIS MORNING AND LAST INTO THE EARLY EVENING HOURS. * WINDS...SOUTH 10 TO 20 MPH WITH GUSTS UP TO 30 MPH. * RELATIVE HUMIDITY...AS LOW AS 12 PERCENT. * IMPACTS...WEATHER CONDITIONS WILL COMBINE WITH THE DRY FUELS TO PRODUCE CONDITIONS FAVORABLE FOR FIRE STARTS AND RAPID 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. && $$
2 follow-up statements
300 WWUS85 KBOU 312053 RFWBOU URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER CO 253 PM MDT FRI AUG 31 2012 ...RED FLAG WARNING THROUGH THIS EVENING FOR THE PALMER DIVIDE AND MOST OF THE NORTHEAST PLAINS OF COLORADO... ...FIRE WEATHER WATCH FOR THE FAR NORTHEASTERN PLAINS OF COLORADO SATURDAY... .WARM AND WINDY CONDITIONS WILL CONTINUE OVER MOST OF THE NORTHEASTERN PLAINS OF COLORADO AS WELL AS THE PALMER DIVIDE INTO THIS EVENING. GUSTY SOUTHERLY WINDS ARE COMBINING WITH HUMIDITIES IN THE LOW TEENS CREATING CRITICAL FIRE WEATHER CONDITIONS. SATURDAY WILL SEE WEAKER WINDS HOWEVER COULD RETURN TO CRITICAL WEATHER CONDITIONS OVER THE FAR NORTHEASTERN PLAINS. COZ238-240-243-010200- /O.EXA.KBOU.FW.W.0030.000000T0000Z-120901T0200Z/ LARIMER COUNTY BELOW 6000 FEET/NORTHWEST WELD COUNTY- NORTH DOUGLAS COUNTY BELOW 6000 FEET/DENVER/WEST ADAMS AND ARAPAHOE COUNTIES/EAST BROOMFIELD COUNTY- CENTRAL AND SOUTH WELD COUNTY- 253 PM MDT FRI AUG 31 2012 ...RED FLAG WARNING IN EFFECT UNTIL 8 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE NORTHERN I25 CORRIDOR... THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A RED FLAG WARNING FOR WIND AND LOW RELATIVE HUMIDITY...WHICH IS IN EFFECT UNTIL 8 PM MDT THIS EVENING. * AFFECTED AREA...FIRE WEATHER ZONES 238...240 AND 243. * TIMING...HOT AND DRY CONDITIONS WILL CONTINUE INTO THE EARLY EVENING HOURS. * WINDS...SOUTH 10 TO 20 MPH WITH GUSTS UP TO 30 MPH. * RELATIVE HUMIDITY...AS LOW AS 12 PERCENT. * IMPACTS...WEATHER CONDITIONS WILL COMBINE WITH THE DRY FUELS TO PRODUCE CONDITIONS FAVORABLE FOR FIRE STARTS AND RAPID SPREAD. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING OR IMMINENT. PLEASE ADVISE THE APPROPRIATE OFFICIALS AND FIRE CREWS IN THE FIELD OF THIS RED FLAG WARNING. && $$ COZ246-248>251-010600- /O.NEW.KBOU.FW.A.0013.120901T1700Z-120902T0100Z/ /O.CON.KBOU.FW.W.0030.000000T0000Z-120901T0200Z/ NORTH AND NORTHEAST ELBERT COUNTY BELOW 6000 FEET/NORTH LINCOLN COUNTY-LOGAN COUNTY-WASHINGTON COUNTY-SEDGWICK COUNTY- PHILLIPS COUNTY- 253 PM MDT FRI AUG 31 2012 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE FAR NORTHEASTERN PLAINS OF COLORADO... ...FIRE WEATHER WATCH IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE FAR NORTHEASTERN PLAINS OF COLORADO... 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 246...248...249...250 AND 251. * TIMING...HOT AND DRY CONDITIONS WILL CONTINUE INTO THE EARLY EVENING HOURS. CONDITIONS MAY BE MET AGAIN SATURDAY AFTERNOON. * WINDS...SOUTH 10 TO 20 MPH WITH GUSTS UP TO 30 MPH. * RELATIVE HUMIDITY...AS LOW AS 10 PERCENT. * IMPACTS...WEATHER CONDITIONS WILL COMBINE WITH THE DRY FUELS TO PRODUCE CONDITIONS FAVORABLE FOR FIRE STARTS AND RAPID 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. A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE POSSIBLE. PLEASE ADVISE THE APPROPRIATE OFFICIALS AND FIRE CREWS IN THE FIELD OF THIS FIRE WEATHER WATCH. && $$ COZ241-242-244-245-010200- /O.CON.KBOU.FW.W.0030.000000T0000Z-120901T0200Z/ ELBERT/CENTRAL AND EAST DOUGLAS COUNTIES ABOVE 6000 FEET- NORTHEAST WELD COUNTY-MORGAN COUNTY- CENTRAL AND EAST ADAMS AND ARAPAHOE COUNTIES- 253 PM MDT FRI AUG 31 2012 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE PALMER DIVIDE AND THE NORTHEASTERN PLAINS OF COLORADO... * AFFECTED AREA...FIRE WEATHER ZONES 241...242...244 AND 245. * TIMING...HOT AND DRY CONDITIONS WILL CONTINUE INTO THE EARLY EVENING HOURS. * WINDS...SOUTH 15 TO 20 MPH WITH GUSTS UP TO 30 MPH. * RELATIVE HUMIDITY...AS LOW AS 11 PERCENT. * IMPACTS...WEATHER CONDITIONS WILL COMBINE WITH THE DRY FUELS TO PRODUCE CONDITIONS FAVORABLE FOR FIRE STARTS AND RAPID SPREAD. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING OR IMMINENT. PLEASE ADVISE THE APPROPRIATE OFFICIALS AND FIRE CREWS IN THE FIELD OF THIS RED FLAG WARNING. && $$
349 WWUS85 KBOU 010154 RFWBOU URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER CO 754 PM MDT FRI AUG 31 2012 COZ246-248>251-011000- /O.CAN.KBOU.FW.W.0030.000000T0000Z-120901T0200Z/ /O.CON.KBOU.FW.A.0013.120901T1700Z-120902T0100Z/ NORTH AND NORTHEAST ELBERT COUNTY BELOW 6000 FEET/NORTH LINCOLN COUNTY-LOGAN COUNTY-WASHINGTON COUNTY-SEDGWICK COUNTY- PHILLIPS COUNTY- 754 PM MDT FRI AUG 31 2012 ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR THE FAR NORTHEASTERN PLAINS OF COLORADO... ...RED FLAG WARNING IS CANCELLED FOR WIND AND LOW RELATIVE HUMIDITY FOR THE FAR NORTHEASTERN PLAINS OF COLORADO... THE NATIONAL WEATHER SERVICE IN DENVER HAS CANCELLED THE RED FLAG WARNING. * AFFECTED AREA...FIRE WEATHER ZONES 246...248...249...250 AND 251. * TIMING...HOT AND DRY CONDITIONS WILL RETURN AGAN BY SATURDAY AFTERNOON. * WINDS...SOUTHEAST WINDS 10 TO 15 MPH FOR THE REST OF TONIGHT AND SATURDAY MORNING. WINDS INCREASING AGAIN TO 15 TO 25 MPH WITH GUSTS UP TO 30 MPH POSSIBLE SATURDAY AFTERNOON. * RELATIVE HUMIDITY...AS LOW AS 10 PERCENT AGAIN BY SATURDAY AFTERNOON. * IMPACTS...WEATHER CONDITIONS WILL COMBINE WITH THE DRY FUELS TO PRODUCE CONDITIONS FAVORABLE FOR FIRE STARTS AND RAPID SPREAD. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE POSSIBLE. PLEASE ADVISE THE APPROPRIATE OFFICIALS AND FIRE CREWS IN THE FIELD OF THIS FIRE WEATHER WATCH. && $$ COZ238-240>245-010300- /O.CAN.KBOU.FW.W.0030.000000T0000Z-120901T0200Z/ LARIMER COUNTY BELOW 6000 FEET/NORTHWEST WELD COUNTY- NORTH DOUGLAS COUNTY BELOW 6000 FEET/DENVER/WEST ADAMS AND ARAPAHOE COUNTIES/EAST BROOMFIELD COUNTY- ELBERT/CENTRAL AND EAST DOUGLAS COUNTIES ABOVE 6000 FEET- NORTHEAST WELD COUNTY-CENTRAL AND SOUTH WELD COUNTY-MORGAN COUNTY- CENTRAL AND EAST ADAMS AND ARAPAHOE COUNTIES- 754 PM MDT FRI AUG 31 2012 ...RED FLAG WARNING IS CANCELLED FOR WIND AND LOW RELATIVE HUMIDITY FOR THE NORTHERN I25 CORRIDOR... THE NATIONAL WEATHER SERVICE IN DENVER HAS CANCELLED THE RED FLAG WARNING. THE SOUTHEAST WINDS WILL CONTINUE TO DECREASE THROUGH THE REST OF THE EVENING WHILE HUMIDITY LEVELS SLOWLY RISE. $$
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 31, 2:53 PM MDT | Fire Weather Watch | BOU | Elbert, Lincoln, Logan, Phillips, Sedgwick, Washington | 13 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.