Alert archive / Oklahoma / Red Flag Warnings in 2011
Red Flag Warning 3, NWS Tulsa, OK
NWS Tulsa, OK issued this red flag warning at Apr 6, 2011, 4:11 AM CDT for 20 counties in Oklahoma; 4 counties in Arkansas. It took effect at Apr 6, 2011, 10:00 AM 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 6, 2011, 4:11 AM CDT (09:11 UTC)
- In effect from
- Apr 6, 2011, 10:00 AM CDT
- Expired
- Apr 6, 2011, 7:00 PM CDT
- In force
- 9 hr
- Issued by
- NWS Tulsa, OK
All 24 counties
Benton County, AR, Carroll County, AR, Madison County, AR, Washington County, AR, Adair County, OK, Cherokee County, OK, Craig County, OK, Creek County, OK, Delaware County, OK, Haskell County, OK, Latimer 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), 32 km from the middle of the area, began a volume at 09:09 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
Springfield, MO (KSGF), launched 00:00Z, 9.2 hours before the alert went out and 165 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
- 3116 m above ground
- 0-6 km bulk shear
- 70 kt
- 0-1 km storm-relative helicity
- 151 m²/s²
- 0-3 km storm-relative helicity
- 276 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
788 WWUS84 KTSA 060911 RFWTSA URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE TULSA OK 411 AM CDT WED APR 6 2011 ...DANGEROUS FIRE WEATHER CONDITIONS AGAIN TODAY... .STRONG AND GUSTY SOUTH WINDS WILL CONTINUE TODAY ACROSS MOST OF EASTERN OKLAHOMA AND NORTHWEST ARKANSAS WITH A DRY AIRMASS REMAINING OVER THE AREA. LOW LEVEL MOISTURE WILL BEGIN TO INCREASE THIS AFTERNOON ACROSS FAR SOUTHEAST OKLAHOMA TO KEEP HUMIDITY ABOVE CRITICAL LEVELS...WHILE A AN APPROACHING FRONTAL BOUNDARY WILL CAUSE WIND TO DIMINISH ACROSS NORTHEAST OKLAHOMA THIS AFTERNOON. OUTSIDE OF THOSE AREAS...THE COMBINATION OF STRONG WINDS AND VERY LOW HUMIDITY WILL ONCE AGAIN LEAD TO DANGEROUS FIRE WEATHER CONDITIONS FROM LATE MORNING THROUGH MUCH OF THE AFTERNOON. ARZ001-002-010-011-019-020-029-OKZ068>076-061715- /O.NEW.KTSA.FW.W.0003.110406T1500Z-110407T0000Z/ BENTON-CARROLL-WASHINGTON AR-MADISON-CRAWFORD-FRANKLIN-SEBASTIAN- CHEROKEE-ADAIR-MUSKOGEE-MCINTOSH-SEQUOYAH-PITTSBURG-HASKELL- LATIMER-LE FLORE- 411 AM CDT WED APR 6 2011 ...RED FLAG WARNING IN EFFECT FROM 10 AM THIS MORNING TO 7 PM CDT THIS EVENING... THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM 10 AM THIS MORNING TO 7 PM CDT THIS EVENING. FOR THE FOLLOWING COUNTIES... IN ARKANSAS... BENTON...CARROLL...WASHINGTON...MADISON...CRAWFORD...FRANKLIN AND SEBASTIAN. IN OKLAHOMA... CHEROKEE...ADAIR...MUSKOGEE...MCINTOSH...SEQUOYAH...PITTSBURG... HASKELL...LATIMER AND LE FLORE. RELATIVE HUMIDITY LEVELS HAVE NOT RECOVERED SIGNIFICANTLY OVERNIGHT ACROSS EASTERN OKLAHOMA AND NORTHWEST ARKANSAS...AND WILL FALL BELOW 25 PERCENT IN MANY AREAS BY MID MORNING. IN ADDITION...SOUTH WINDS OF 15 TO 25 MPH AND GUSTS NEAR 35 MPH WILL BE COMMON THROUGH THIS AFTERNOON. THESE WEATHER CONDITIONS WILL CAUSE ANY FIRES TO SPREAD RAPIDLY AND BE DIFFICULT TO CONTROL. HUMIDITY LEVELS SHOULD RISE SIGNIFICANTLY THIS EVENING WITH A DECREASE IN WIND SPEED...HELPING REDUCE THE FIRE THREAT. 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. ADDITIONAL FIRE INFORMATION...INCLUDING CURRENT COUNTY BURN BANS...CAN BE ACCESSED FROM THE OKLAHOMA DEPARTMENT OF AGRICULTURE AT: WWW.OK.GOV/~OKAG/ AND FROM THE ARKANSAS FORESTRY COMMISSION AT: WWW.FORESTRY.STATE.AR.US. && $$
2 follow-up statements
925 WWUS84 KTSA 061404 RFWTSA URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE TULSA OK 904 AM CDT WED APR 6 2011 ...DANGEROUS FIRE WEATHER CONDITIONS AGAIN TODAY... .STRONG AND GUSTY SOUTH WINDS WILL CONTINUE TODAY ACROSS MOST OF EASTERN OKLAHOMA AND NORTHWEST ARKANSAS WITH A DRY AIRMASS REMAINING OVER THE AREA. THE COMBINATION OF STRONG WINDS AND VERY LOW HUMIDITY WILL ONCE AGAIN LEAD TO DANGEROUS FIRE WEATHER CONDITIONS FROM LATE MORNING THROUGH MUCH OF THE AFTERNOON. OKZ054>067-062215- /O.EXA.KTSA.FW.W.0003.110406T1500Z-110407T0000Z/ OSAGE-WASHINGTON OK-NOWATA-CRAIG-OTTAWA-PAWNEE-TULSA-ROGERS-MAYES- DELAWARE-CREEK-OKFUSKEE-OKMULGEE-WAGONER- 904 AM CDT WED APR 6 2011 ...RED FLAG WARNING IN EFFECT UNTIL 7 PM CDT THIS EVENING... THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT UNTIL 7 PM CDT THIS EVENING. FOR THE FOLLOWING COUNTIES... IN OKLAHOMA... OSAGE...WASHINGTON...NOWATA...CRAIG...OTTAWA...PAWNEE...TULSA... ROGERS...MAYES...DELAWARE...CREEK...OKFUSKEE...OKMULGEE AND WAGONER. RELATIVE HUMIDITY LEVELS WILL FALL BELOW 25 PERCENT BY MID MORNING. IN ADDITION...SOUTH WINDS OF 15 TO 25 MPH AND GUSTS NEAR 40 MPH WILL BE COMMON THROUGH AT LEAST MID AFTERNOON. THESE WEATHER CONDITIONS WILL CAUSE ANY FIRES TO SPREAD RAPIDLY AND BE DIFFICULT TO CONTROL. HUMIDITY LEVELS SHOULD RISE SIGNIFICANTLY THIS EVENING...AND COMBINED WITH A DECREASE IN WIND SPEED...WILL HELP REDUCE THE FIRE THREAT. 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. ADDITIONAL FIRE INFORMATION...INCLUDING CURRENT COUNTY BURN BANS...CAN BE ACCESSED FROM THE OKLAHOMA DEPARTMENT OF AGRICULTURE AT: WWW.OK.GOV/~OKAG/ AND FROM THE ARKANSAS FORESTRY COMMISSION AT: WWW.FORESTRY.STATE.AR.US. && $$ ARZ001-002-010-011-019-020-029-OKZ068>076-062215- /O.CON.KTSA.FW.W.0003.110406T1500Z-110407T0000Z/ BENTON-CARROLL-WASHINGTON AR-MADISON-CRAWFORD-FRANKLIN-SEBASTIAN- CHEROKEE-ADAIR-MUSKOGEE-MCINTOSH-SEQUOYAH-PITTSBURG-HASKELL- LATIMER-LE FLORE- 904 AM CDT WED APR 6 2011 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING... FOR THE FOLLOWING COUNTIES... IN ARKANSAS... BENTON...CARROLL...WASHINGTON...MADISON...CRAWFORD...FRANKLIN AND SEBASTIAN. IN OKLAHOMA... CHEROKEE...ADAIR...MUSKOGEE...MCINTOSH...SEQUOYAH...PITTSBURG... HASKELL...LATIMER AND LE FLORE. RELATIVE HUMIDITY LEVELS WILL FALL BELOW 25 PERCENT BY MID MORNING. IN ADDITION...SOUTH WINDS OF 15 TO 25 MPH AND GUSTS NEAR 40 MPH WILL BE COMMON THROUGH AT LEAST MID AFTERNOON. THESE WEATHER CONDITIONS WILL CAUSE ANY FIRES TO SPREAD RAPIDLY AND BE DIFFICULT TO CONTROL. HUMIDITY LEVELS SHOULD RISE SIGNIFICANTLY THIS EVENING...AND COMBINED WITH A DECREASE IN WIND SPEED...WILL HELP REDUCE THE FIRE THREAT. 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. ADDITIONAL FIRE INFORMATION...INCLUDING CURRENT COUNTY BURN BANS...CAN BE ACCESSED FROM THE OKLAHOMA DEPARTMENT OF AGRICULTURE AT: WWW.OK.GOV/~OKAG/ AND FROM THE ARKANSAS FORESTRY COMMISSION AT: WWW.FORESTRY.STATE.AR.US. && $$
817 WWUS84 KTSA 062014 RFWTSA URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE TULSA OK 314 PM CDT WED APR 6 2011 ARZ001-002-010-011-019-020-029-OKZ054>076-070000- /O.CON.KTSA.FW.W.0003.000000T0000Z-110407T0000Z/ BENTON-CARROLL-WASHINGTON AR-MADISON-CRAWFORD-FRANKLIN-SEBASTIAN- OSAGE-WASHINGTON OK-NOWATA-CRAIG-OTTAWA-PAWNEE-TULSA-ROGERS-MAYES- DELAWARE-CREEK-OKFUSKEE-OKMULGEE-WAGONER-CHEROKEE-ADAIR-MUSKOGEE- MCINTOSH-SEQUOYAH-PITTSBURG-HASKELL-LATIMER-LE FLORE- 314 PM CDT WED APR 6 2011 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING... FOR THE FOLLOWING COUNTIES... IN ARKANSAS... BENTON...CARROLL...WASHINGTON...MADISON...CRAWFORD...FRANKLIN AND SEBASTIAN. IN OKLAHOMA... OSAGE...WASHINGTON...NOWATA...CRAIG...OTTAWA...PAWNEE...TULSA... ROGERS...MAYES...DELAWARE...CREEK...OKFUSKEE...OKMULGEE... WAGONER...CHEROKEE...ADAIR...MUSKOGEE...MCINTOSH...SEQUOYAH... PITTSBURG...HASKELL...LATIMER AND LE FLORE. DANGEROUS FIRE WEATHER CONDITIONS WILL CONTINUE INTO THE EARLY EVENING HOURS...WITH SOUTH TO SOUTHWESTERLY WINDS GUSTING 20 TO 30 MPH AND HUMIDITY LEVELS RANGING FROM AROUND 15 PERCENT ACROSS NORTHEAST OKLAHOMA TO AROUND 30 PERCENT ACROSS NORTHWEST ARKANSAS. THE WINDS WILL GRADUALLY DIMINISH NEAR SUNSET AND THE HUMIDITY LEVELS WILL SLOWLY RISE AS TEMPERATURES COOL. ALSO...A COLD FRONT WAS LOCATED NEAR INTERSTATE 35 IN NORTH CENTRAL OKLAHOMA...AND WILL BE MOVING INTO NORTHEAST OKLAHOMA WITHIN THE NEXT FEW HOURS. THIS FRONT WILL BECOME STATIONARY NEAR THE INTERSTATE 44 CORRIDOR THIS EVENING. ANY ONGOING FIRE SUPPRESSION ACTIVITIES ACROSS NORTHEAST OKLAHOMA SHOULD CLOSELY MONITOR THIS WIND SHIFT...AND PLAN ACCORDINGLY. PRECAUTIONARY/PREPAREDNESS ACTIONS... AGGRESSIVE FIRE BEHAVIOR SHOULD BE EXPECTED WITH RED FLAG CONDITIONS. ALL OUTDOOR BURNING SHOULD BE DELAYED IF POSSIBLE. ADDITIONAL FIRE INFORMATION...INCLUDING CURRENT COUNTY BURN BANS...CAN BE ACCESSED FROM THE OKLAHOMA DEPARTMENT OF AGRICULTURE AT: WWW.OK.GOV/~OKAG/ AND FROM THE ARKANSAS FORESTRY COMMISSION AT: WWW.FORESTRY.STATE.AR.US. && $$
The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 6, 9:06 AM CDT | Wind Advisory | TSA | Adair, Cherokee, Craig, Creek, Delaware, Haskell and 14 more | 6 hr |
Nearby
Red Flag Warnings in Oklahoma, 2011Red Flag Warnings in Arkansas, 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.