Alert archive / Oklahoma / Red Flag Warnings in 2011
Red Flag Warning 2, NWS Tulsa, OK
NWS Tulsa, OK issued this red flag warning at Apr 5, 2011, 4:02 AM CDT for 17 counties in Oklahoma. It took effect at Apr 5, 2011, 12:00 PM CDT. 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 5, 2011, 4:02 AM CDT (09:02 UTC)
- In effect from
- Apr 5, 2011, 12:00 PM CDT
- Expired
- Apr 5, 2011, 9:00 PM CDT
- In force
- 9 hr
- Issued by
- NWS Tulsa, OK
Counties Cherokee County, OK, Craig County, OK, Creek County, OK, Delaware County, OK, Mayes County, OK, McIntosh County, OK, Muskogee County, OK, Nowata County, OK, Okfuskee County, OK, Okmulgee County, OK, Ottawa County, OK, Pawnee County, OK, Pittsburg County, OK, Rogers County, OK, Tulsa County, OK, Wagoner County, OK, Washington County, OK
The radar
The Tulsa radar (KINX), 12 km from the middle of the area, began a volume at 09:01 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
Lamont, OK (KLMN), launched 00:00Z, 9.0 hours before the alert went out and 176 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
- 2746 m above ground
- 0-6 km bulk shear
- 61 kt
- 0-1 km storm-relative helicity
- -13 m²/s²
- 0-3 km storm-relative helicity
- 79 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
848 WWUS84 KTSA 050902 RFWTSA URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE TULSA OK 402 AM CDT TUE APR 5 2011 OKZ049-053-074-075-051015- /O.CAN.KTSA.FW.A.0003.110405T1700Z-110406T0100Z/ PUSHMATAHA-CHOCTAW-HASKELL-LATIMER- 402 AM CDT TUE APR 5 2011 ...FIRE WEATHER WATCH IS CANCELLED... THE NATIONAL WEATHER SERVICE IN TULSA HAS CANCELLED THE FIRE WEATHER WATCH. FOR THE FOLLOWING COUNTIES... IN OKLAHOMA... PUSHMATAHA...CHOCTAW...HASKELL AND LATIMER. WARM AND VERY DRY CONDITIONS ARE EXPECTED THIS AFTERNOON...HOWEVER WIND SPEEDS WILL REMAIN LESS THAN 20 MPH. FIRE DANGER WILL REMAIN HIGH DUE TO THE DRY AIRMASS AND ONGOING DROUGHT CONDITIONS. $$ OKZ054>056-059>061-064>067-070-071-073-051715- /O.UPG.KTSA.FW.A.0003.110405T1700Z-110406T0100Z/ /O.NEW.KTSA.FW.W.0002.110405T1700Z-110406T0200Z/ OSAGE-WASHINGTON OK-NOWATA-PAWNEE-TULSA-ROGERS-CREEK-OKFUSKEE- OKMULGEE-WAGONER-MUSKOGEE-MCINTOSH-PITTSBURG- 402 AM CDT TUE APR 5 2011 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 9 PM CDT THIS EVENING... THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM NOON TODAY TO 9 PM CDT THIS EVENING. THE FIRE WEATHER WATCH IS NO LONGER IN EFFECT. FOR THE FOLLOWING COUNTIES... IN OKLAHOMA... OSAGE...WASHINGTON...NOWATA...PAWNEE...TULSA...ROGERS...CREEK... OKFUSKEE...OKMULGEE...WAGONER...MUSKOGEE...MCINTOSH AND PITTSBURG. SOUTH WINDS FROM 15 TO 25 MPH WITH HIGHER GUSTS ARE EXPECTED THIS AFTERNOON OVER EASTERN OKLAHOMA. IN ADDITION...MINIMUM RELATIVE HUMIDITIES ARE FORECAST TO DROP TO LESS THAN 20 PERCENT. THIS WILL LEAD TO CRITICAL FIRE WEATHER CONDITIONS WHICH FAVOR RAPID FIRE GROWTH. WIND SPEEDS WILL REMAIN IN THE 10 TO 20 MPH RANGE OVERNIGHT WITH HUMIDITY LEVELS SLOW TO RECOVER. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT A DANGEROUS COMBINATION OF WEATHER CONDITIONS AND DRY VEGETATION IS EXPECTED WITHIN 24 HOURS...FAVORING RAPID GROWTH AND SPREAD OF ANY WILDFIRES. THE PRIMARY WEATHER FACTORS INCLUDE STRONGER WINDS...LOWER HUMIDITIES...AND WARMER TEMPERATURES. DISPOSE OF CIGARETTES PROPERLY AND AVOID ACTIVITIES THAT COULD START FIRES. && $$ OKZ057-058-062-063-068-051715- /O.NEW.KTSA.FW.W.0002.110405T1700Z-110406T0200Z/ CRAIG-OTTAWA-MAYES-DELAWARE-CHEROKEE- 402 AM CDT TUE APR 5 2011 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 9 PM CDT THIS EVENING... THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM NOON TODAY TO 9 PM CDT THIS EVENING. FOR THE FOLLOWING COUNTIES... IN OKLAHOMA... CRAIG...OTTAWA...MAYES...DELAWARE AND CHEROKEE. SOUTH WINDS FROM 15 TO 25 MPH WITH HIGHER GUSTS ARE EXPECTED THIS AFTERNOON OVER NORTHEAST OKLAHOMA. IN ADDITION...MINIMUM RELATIVE HUMIDITIES ARE FORECAST TO DROP TO LESS THAN 20 PERCENT. THIS WILL LEAD TO CRITICAL FIRE WEATHER CONDITIONS WHICH FAVOR RAPID FIRE GROWTH. WIND SPEEDS WILL REMAIN IN THE 10 TO 20 MPH RANGE OVERNIGHT WITH HUMIDITY LEVELS SLOW TO RECOVER. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT A DANGEROUS COMBINATION OF WEATHER CONDITIONS AND DRY VEGETATION IS EXPECTED WITHIN 24 HOURS...FAVORING RAPID GROWTH AND SPREAD OF ANY WILDFIRES. THE PRIMARY WEATHER FACTORS INCLUDE STRONGER WINDS...LOWER HUMIDITIES...AND WARMER TEMPERATURES. DISPOSE OF CIGARETTES PROPERLY AND AVOID ACTIVITIES THAT COULD START FIRES. && $$
2 follow-up statements
386 WWUS84 KTSA 052022 RFWTSA URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE TULSA OK 322 PM CDT TUE APR 5 2011 OKZ054>068-070-071-073-060200- /O.CON.KTSA.FW.W.0002.000000T0000Z-110406T0200Z/ OSAGE-WASHINGTON OK-NOWATA-CRAIG-OTTAWA-PAWNEE-TULSA-ROGERS-MAYES- DELAWARE-CREEK-OKFUSKEE-OKMULGEE-WAGONER-CHEROKEE-MUSKOGEE- MCINTOSH-PITTSBURG- 322 PM CDT TUE APR 5 2011 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM CDT THIS EVENING... FOR THE FOLLOWING COUNTIES... IN OKLAHOMA... OSAGE...WASHINGTON...NOWATA...CRAIG...OTTAWA...PAWNEE...TULSA... ROGERS...MAYES...DELAWARE...CREEK...OKFUSKEE...OKMULGEE... WAGONER...CHEROKEE...MUSKOGEE...MCINTOSH AND PITTSBURG. SOUTH WINDS FROM 15 TO 25 MPH WITH HIGHER GUSTS WILL CONTINUE THIS AFTERNOON AND EVENING OVER PORTIONS OF EASTERN OKLAHOMA. IN ADDITION...MINIMUM RELATIVE HUMIDITIES HAVE DROPPED INTO THE 10 TO 20 PERCENT RANGE THIS AFTERNOON. THE COMBINATION OF THE GUSTY WINDS AND VERY LOW RELATIVE HUMIDITIES WILL KEEP FIRE WEATHER CONDITIONS AT A CRITICAL LEVEL...FAVORING RAPID FIRE GROWTH THROUGH MID EVENING. WIND SPEEDS WILL REMAIN IN THE 10 TO 20 MPH RANGE OVERNIGHT WITH HUMIDITY LEVELS SLOW TO RECOVER. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT A DANGEROUS COMBINATION OF WEATHER CONDITIONS AND DRY VEGETATION IS EXPECTED WITHIN 24 HOURS... FAVORING RAPID GROWTH AND SPREAD OF ANY WILDFIRES. THE PRIMARY WEATHER FACTORS INCLUDE STRONGER WINDS...LOWER HUMIDITIES...AND WARMER TEMPERATURES. DISPOSE OF CIGARETTES PROPERLY AND AVOID ACTIVITIES THAT COULD START FIRES. && $$
225 WWUS84 KTSA 060201 RFWTSA URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE TULSA OK 901 PM CDT TUE APR 5 2011 OKZ054>068-070-071-073-060315- /O.EXP.KTSA.FW.W.0002.000000T0000Z-110406T0200Z/ OSAGE-WASHINGTON OK-NOWATA-CRAIG-OTTAWA-PAWNEE-TULSA-ROGERS-MAYES- DELAWARE-CREEK-OKFUSKEE-OKMULGEE-WAGONER-CHEROKEE-MUSKOGEE- MCINTOSH-PITTSBURG- 901 PM CDT TUE APR 5 2011 ...RED FLAG WARNING HAS EXPIRED... THE RED FLAG WARNING IS NO LONGER IN EFFECT. FOR THE FOLLOWING COUNTIES... IN OKLAHOMA... OSAGE...WASHINGTON...NOWATA...CRAIG...OTTAWA...PAWNEE...TULSA... ROGERS...MAYES...DELAWARE...CREEK...OKFUSKEE...OKMULGEE... WAGONER...CHEROKEE...MUSKOGEE...MCINTOSH AND PITTSBURG. WINDS HAVE DIMINISHED BELOW CRITICAL LEVELS SO THE WARNING HAS BEEN ALLOWED TO EXPIRE. $$
Nearby
Red Flag Warnings in Oklahoma, 2011Every red flag warning in 2011
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.