Alert archive / Colorado / Red Flag Warnings in 2015
Red Flag Warning 9, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this red flag warning at Apr 13, 2015, 2:45 PM MDT for 11 counties in Colorado. It took effect at Apr 14, 2015, 11:00 AM MDT. It was in force for 9 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
- Apr 13, 2015, 2:45 PM MDT (20:45 UTC)
- In effect from
- Apr 14, 2015, 11:00 AM MDT
- Expired
- Apr 14, 2015, 8:00 PM MDT
- In force
- 9 hr
- Issued by
- NWS Denver/Boulder, CO
Counties Adams County, CO, Arapahoe County, CO, Douglas County, CO, Elbert County, CO, Lincoln 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), 78 km from the middle of the area, began a volume at 20:48 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 12:00Z, 8.8 hours before the alert went out and 41 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
- 2340 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- -14 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.
774 WWUS85 KBOU 132045 RFWBOU URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER/BOULDER CO 245 PM MDT MON APR 13 2015 ...RED FLAG WARNING FROM 11 AM MDT TUESDAY MORNING TO 8 PM MDT TUESDAY EVENING ACROSS THE PALMER DIVIDE REGION AND NORTHEAST PLAINS OF COLORADO... .STRONG SOUTHERLY WINDS ARE EXPECTED TO DEVELOP LATE TUESDAY MORNING AFTERNOON AS A LOW PRESSURE AREA STRENGTHENS OVER WYOMING. TEMPERATURES ARE ALSO EXPECTED TO CLIMB INTO THE LOWER TO MID 70S AND RELATIVE HUMIDITIES WILL DROP TO THE LOWER TEENS UNDER MOSTLY SUNNY SKIES. THE COMBINATION OF WARM TEMPERATURES...WINDY CONDITIONS AND LOW RELATIVE HUMIDITIES WILL CAUSE ELEVATED FIRE DANGER CONDITIONS. EXTREME FIRE BEHAVIOR IS EXPECTED IN DRY AND CURED VEGETATION DURING THE WARMEST AND WINDIEST PART OF THE DAY. COZ241-245>247-140445- /O.UPG.KBOU.FW.A.0005.150414T1700Z-150415T0200Z/ /O.NEW.KBOU.FW.W.0009.150414T1700Z-150415T0200Z/ 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- 245 PM MDT MON APR 13 2015 ...RED FLAG WARNING IN EFFECT FROM 11 AM TO 8 PM MDT TUESDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR THE PALMER DIVIDE REGION AND EASTERN ADAMS AND EASTERN ARAPAHOE COUNTIES... 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 8 PM MDT TUESDAY. THE FIRE WEATHER WATCH IS NO LONGER IN EFFECT. * AFFECTED AREA...FIRE WEATHER ZONES 241...245...246 AND 247. * TIMING...11 AM MDT UNTIL 8 PM MDT. * WINDS...SOUTH 15 TO 25 MPH WITH GUSTS UP TO 40 MPH. * RELATIVE HUMIDITY...AS LOW AS 12 PERCENT. * IMPACTS...EXTREME FIRE BEHAVIOR WILL BE LIKELY IN DRY VEGETATION BECAUSE OF THE WARM TEMPERATURES...LOW HUMIDITIES AND GUSTY SOUTH WINDS. 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. && $$ COZ242-244-248>251-140445- /O.NEW.KBOU.FW.W.0009.150414T1700Z-150415T0200Z/ NORTHEAST WELD COUNTY-MORGAN COUNTY-LOGAN COUNTY- WASHINGTON COUNTY-SEDGWICK COUNTY-PHILLIPS COUNTY- 245 PM MDT MON APR 13 2015 ...RED FLAG WARNING IN EFFECT FROM 11 AM TO 8 PM MDT TUESDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR THE NORTHEAST PLAINS OF COLORADO... THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A RED FLAG WARNING FOR WIND AND LOW RELATIVE HUMIDITY...WHICH IS IN EFFECT FROM 11 AM TO 8 PM MDT TUESDAY. * AFFECTED AREA...FIRE WEATHER ZONES 242...244...248...249... 250 AND 251. * TIMING...11 AM MDT UNTIL 8 PM MDT. * WINDS...SOUTH 15 TO 25 MPH WITH GUSTS UP TO 40 MPH. * RELATIVE HUMIDITY...AS LOW AS 15 PERCENT. * IMPACTS...EXTREME FIRE BEHAVIOR WILL BE LIKELY IN DRY VEGETATION BECAUSE OF THE WARM TEMPERATURES...LOW HUMIDITIES AND GUSTY SOUTH WINDS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES CAN CONTRIBUTE TO EXTREME FIRE BEHAVIOR. && $$
5 follow-up statements
786 WWUS85 KBOU 140414 RFWBOU URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER/BOULDER CO 1014 PM MDT MON APR 13 2015 ...RED FLAG WARNING FROM 11 AM MDT TUESDAY MORNING TO 8 PM MDT TUESDAY EVENING ACROSS THE PALMER DIVIDE REGION AND NORTHEAST PLAINS OF COLORADO... .THE COMBINATION OF WARMER THAN AVERAGE TEMPERATURES...GUSTY SOUTHERLY WINDS...LOW RELATIVE HUMIDITY AND DRY FUELS WILL PRODUCE CRITICAL WILDLAND FIRE DANGER CONDITIONS ON THE PLAINS OF NORTHEAST COLORADO LATE TUESDAY MORNING THROUGH EARLY TUESDAY EVENING. COZ241-242-244>251-141215- /O.CON.KBOU.FW.W.0009.150414T1700Z-150415T0200Z/ 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- SOUTHEAST ELBERT COUNTY BELOW 6000 FEET/SOUTH LINCOLN COUNTY- LOGAN COUNTY-WASHINGTON COUNTY-SEDGWICK COUNTY-PHILLIPS COUNTY- 1014 PM MDT MON APR 13 2015 ...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM TO 8 PM MDT TUESDAY FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR THE NORTHEAST PLAINS OF COLORADO... * AFFECTED AREA...FIRE WEATHER ZONES 241...242...244...245... 246...247...248...249...250 AND 251. * TIMING...11 AM MDT UNTIL 8 PM MDT. * WINDS...SOUTH 15 TO 25 MPH WITH GUSTS UP TO 45 MPH. * RELATIVE HUMIDITY...AS LOW AS 12 PERCENT. * IMPACTS...EXTREME FIRE BEHAVIOR WILL BE LIKELY IN DRY VEGETATION BECAUSE OF THE VERY WARM TEMPERATURES...LOW HUMIDITIES AND GUSTY SOUTHERLY WINDS. 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. && $$ BAKER
720 WWUS85 KBOU 140441 AAA RFWBOU URGENT - FIRE WEATHER MESSAGE...UPDATED NATIONAL WEATHER SERVICE DENVER/BOULDER CO 1041 PM MDT MON APR 13 2015 ...RED FLAG WARNING FROM 11 AM MDT TUESDAY MORNING TO 8 PM MDT TUESDAY EVENING ACROSS THE PALMER DIVIDE REGION AND NORTHEAST PLAINS OF COLORADO... .THE COMBINATION OF WARMER THAN AVERAGE TEMPERATURES...GUSTY SOUTHERLY WINDS...LOW RELATIVE HUMIDITY AND DRY FUELS WILL PRODUCE CRITICAL RANGELAND FIRE DANGER CONDITIONS ON THE PLAINS OF NORTHEAST COLORADO LATE TUESDAY MORNING THROUGH EARLY TUESDAY EVENING. COZ241-242-244>251-141245- /O.CON.KBOU.FW.W.0009.150414T1700Z-150415T0200Z/ ELBERT/CENTRAL AND EAST DOUGLAS COUNTIES ABOVE 6000 FEET- NORTHEAST WELD COUNTY-MORGAN COUNTY- CENTRAL AND EAST ADAMS AND ARAPAHOE COUNTIES- NORTH AND NORTHEAST ELBERT COUNTY BELOW 6000 FEET/NORTH LINCOLN COUNTY- SOUTHEAST ELBERT COUNTY BELOW 6000 FEET/SOUTH LINCOLN COUNTY- LOGAN COUNTY-WASHINGTON COUNTY-SEDGWICK COUNTY-PHILLIPS COUNTY- 1041 PM MDT MON APR 13 2015 ...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM TO 8 PM MDT TUESDAY FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR THE NORTHEAST PLAINS OF COLORADO... * AFFECTED AREA...FIRE WEATHER ZONES 241...242...244...245... 246...247...248...249...250 AND 251. * TIMING...11 AM MDT UNTIL 8 PM MDT. * WINDS...SOUTH 15 TO 25 MPH WITH GUSTS UP TO 40 MPH. * RELATIVE HUMIDITY...AS LOW AS 12 PERCENT. * IMPACTS...EXTREME FIRE BEHAVIOR WILL BE LIKELY IN DRY VEGETATION BECAUSE OF THE VERY WARM TEMPERATURES...LOW HUMIDITIES AND GUSTY SOUTHERLY WINDS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES CAN CONTRIBUTE TO EXTREME FIRE BEHAVIOR. && $$ BAKER
136 WWUS85 KBOU 141154 RFWBOU URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER/BOULDER CO 554 AM MDT TUE APR 14 2015 ...RED FLAG WARNING FROM 11 AM MDT TUESDAY MORNING TO 8 PM MDT TUESDAY EVENING ACROSS THE PALMER DIVIDE REGION AND NORTHEAST PLAINS OF COLORADO... .THE COMBINATION OF TEMPERATURES IN THE LOWER TO MID 70S...GUSTY SOUTH WINDS...LOW RELATIVE HUMIDITY AND DRY FUELS WILL PRODUCE CRITICAL RANGELAND FIRE DANGER ON THE PLAINS OF NORTHEAST COLORADO FROM LATE THIS MORNING THROUGH EARLY THIS EVENING. COZ241-242-244>251-142000- /O.CON.KBOU.FW.W.0009.150414T1700Z-150415T0200Z/ 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- SOUTHEAST ELBERT COUNTY BELOW 6000 FEET/SOUTH LINCOLN COUNTY- LOGAN COUNTY-WASHINGTON COUNTY-SEDGWICK COUNTY-PHILLIPS COUNTY- 554 AM MDT TUE APR 14 2015 ...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 8 PM MDT THIS EVENING FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR THE NORTHEAST PLAINS OF COLORADO... * AFFECTED AREA...FIRE WEATHER ZONES 241...242...244...245... 246...247...248...249...250 AND 251. * TIMING...11 AM MDT UNTIL 8 PM MDT. * WINDS...SOUTH 20 TO 30 MPH WITH GUSTS UP TO 40 MPH. * RELATIVE HUMIDITY...AS LOW AS 10 TO 15 PERCENT. * IMPACTS...EXTREME FIRE BEHAVIOR WILL BE LIKELY IN DRY VEGETATION BECAUSE OF THE VERY WARM TEMPERATURES...LOW HUMIDITIES AND GUSTY SOUTHERLY WINDS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. THE COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CONTRIBUTE TO EXTREME FIRE BEHAVIOR. && $$
646 WWUS85 KBOU 141745 RFWBOU URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER/BOULDER CO 1145 AM MDT TUE APR 14 2015 ...RED FLAG WARNING IN EFFECT THROUGH 8 PM MDT THIS EVENING ACROSS THE PALMER DIVIDE REGION AND NORTHEAST PLAINS OF COLORADO... .THE COMBINATION OF TEMPERATURES IN THE LOWER TO MID 70S...GUSTY SOUTH WINDS...LOW RELATIVE HUMIDITY AND DRY FUELS WILL PRODUCE CRITICAL RANGELAND FIRE DANGER ON THE PLAINS OF NORTHEAST COLORADO THROUGH EARLY THIS EVENING. COZ241-242-244>251-150200- /O.CON.KBOU.FW.W.0009.000000T0000Z-150415T0200Z/ ELBERT/CENTRAL AND EAST DOUGLAS COUNTIES ABOVE 6000 FEET- NORTHEAST WELD COUNTY-MORGAN COUNTY- CENTRAL AND EAST ADAMS AND ARAPAHOE COUNTIES- NORTH AND NORTHEAST ELBERT COUNTY BELOW 6000 FEET/NORTH LINCOLN COUNTY- SOUTHEAST ELBERT COUNTY BELOW 6000 FEET/SOUTH LINCOLN COUNTY- LOGAN COUNTY-WASHINGTON COUNTY-SEDGWICK COUNTY-PHILLIPS COUNTY- 1145 AM MDT TUE APR 14 2015 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING FOR STRONG GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR THE PALMER DIVIDE AND NORTHEAST PLAINS... * AFFECTED AREA...FIRE WEATHER ZONES 241...242...244...245... 246...247...248...249...250 AND 251. * TIMING...CONDITIONS WILL PERSIST THROUGH 8 PM MDT. * WINDS...SOUTH 20 TO 30 MPH WITH GUSTS UP TO 40 MPH. * RELATIVE HUMIDITY...AS LOW AS 10 TO 15 PERCENT. * IMPACTS...EXTREME FIRE BEHAVIOR WILL BE LIKELY IN DRY VEGETATION BECAUSE OF THE VERY WARM TEMPERATURES...LOW HUMIDITIES AND GUSTY SOUTHERLY WINDS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. THE COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CONTRIBUTE TO EXTREME FIRE BEHAVIOR. && $$
190 WWUS85 KBOU 150159 RFWBOU URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE DENVER/BOULDER CO 759 PM MDT TUE APR 14 2015 COZ241-242-244>251-150300- /O.EXP.KBOU.FW.W.0009.000000T0000Z-150415T0200Z/ 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- SOUTHEAST ELBERT COUNTY BELOW 6000 FEET/SOUTH LINCOLN COUNTY- LOGAN COUNTY-WASHINGTON COUNTY-SEDGWICK COUNTY-PHILLIPS COUNTY- 759 PM MDT TUE APR 14 2015 ...RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING FOR STRONG GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR THE PALMER DIVIDE AND NORTHEAST PLAINS... RELATIVE HUMIDITIES ACROSS NORTHEAST COLORADO CONTINUE TO RISE AND IN MOST AREAS HAVE ALREADY RISEN ABOVE 20 PERCENT AS OF 8 PM MDT. HOWEVER SOUTHEAST WINDS REMAIN GUSTY AT 20 TO 30 MPH. THESE STRONG AND GUSTY WINDS ARE EXPECTED TO DIMINISH AS THE EVENING GOES ON. THEREFORE THE RED FLAG WARNING WILL BE ALLOWED TO EXPIRE AT 8 PM MDT. $$ BAKER
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 13, 5:25 AM MDT | Fire Weather Watch | BOU | Adams, Arapahoe, Douglas, Elbert, Lincoln | 9 hr |
Nearby
Red Flag Warnings in Colorado, 2015Every red flag warning in 2015
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.