Alert archive / Oklahoma / Red Flag Warnings in 2012

Red Flag Warning 12, NWS Tulsa, OK

September 7, 20129 counties in Oklahoma

NWS Tulsa, OK issued this red flag warning at Sep 7, 2012, 3:47 PM CDT for 9 counties in Oklahoma. It was in force for 4 hr. 5 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Sep 7, 2012, 3:47 PM CDT (20:47 UTC)
Expired
Sep 7, 2012, 8:00 PM CDT
In force
4 hr
Issued by
NWS Tulsa, OK

Counties Cherokee County, OK, Haskell County, OK, Latimer County, OK, Mayes County, OK, McIntosh County, OK, Muskogee County, OK, Pittsburg County, OK, Rogers County, OK, Wagoner County, OK

The radar

The Tulsa radar (KINX), 64 km from the middle of the area, began a volume at 20:50 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.

What was reported inside it

TimeReportWhereRemark
Sep 7, 3:54 PM CDTTSTM WND DMGClaremore, OKSEVERAL TREES UPROOTED. SOME ROOF DAMAGE IN TOWN.
Sep 7, 5:00 PM CDTTSTM WND DMG4 N Tahlequah, OKBARN ROOF BLOWN OFF. 4-6 INCH DIAMETER TREE LIMBS DOWN.
Sep 7, 5:15 PM CDTTSTM WND DMGChecotah, OKFENCES DOWN. ROOF DAMAGE. METAL SHED ROOF BLOWN OFF. ESTIMATED GUST TO 70 MPH.
Sep 7, 5:45 PM CDTTSTM WND DMGTamaha, OKNUMEROUS LARGE LIMBS BROKEN BY WIND. ROOF ON SHED DAMAGED.
Sep 7, 5:53 PM CDTTSTM WND DMGKeota, OKROOF BLOWN OFF ONE HOUSE. MANY TREES DAMAGED.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 8.8 hours before the alert went out and 187 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.

Skew-T log-pSkew-T log-p diagram, Norman, OK at 12:00Z on 2012-09-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 460 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Norman, OK at 12:00Z on 2012-09-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -47 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
460 J/kg
Mixed-layer CIN
-231 J/kg
Mixed-layer LCL
2065 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
-47 m²/s²
0-3 km storm-relative helicity
60 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

914 
WWUS84 KTSA 072047
RFWTSA

FIRE WEATHER PRODUCT
NATIONAL WEATHER SERVICE TULSA OK
347 PM CDT FRI SEP 7 2012

...CRITICAL FIRE WEATHER CONDITIONS HAVE DEVELOPED THIS AFTERNOON
AHEAD OF THE FRONT OVER PORTIONS OF EASTERN OKLAHOMA...

.HOT...DRY AND BREEZY CONDITIONS HAVE DEVELOPED AHEAD OF A STRONG
COLD FRONT WHICH IS PUSHING IN FROM THE NORTHWEST. THESE
CONDITIONS WILL CONTINUE THROUGH SUNSET...AND WINDS WILL THEN
SHIFT TO THE NORTH AND BECOME VERY STRONG BEHIND THE FRONT THIS
EVENING. 

OKZ061-062-067-068-070>075-080100-
/O.NEW.KTSA.FW.W.0012.120907T2047Z-120908T0100Z/
ROGERS-MAYES-WAGONER-CHEROKEE-MUSKOGEE-MCINTOSH-SEQUOYAH-
PITTSBURG-HASKELL-LATIMER-
347 PM CDT FRI SEP 7 2012

...RED FLAG WARNING IN EFFECT UNTIL 8 PM CDT THIS EVENING...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A RED FLAG 
WARNING...WHICH IS IN EFFECT UNTIL 8 PM CDT THIS EVENING...

FOR THE FOLLOWING COUNTIES...
 * IN OKLAHOMA...WAGONER...CHEROKEE...MAYES...PITTSBURG... 
   SEQUOYAH...MCINTOSH...MUSKOGEE...ROGERS...LATIMER AND 
   HASKELL. 

HAZARDOUS WEATHER...
 * CRITICAL FIRE WEATHER CONDITIONS ARE ONGOING OVER PORTIONS OF
   NORTHEAST OKLAHOMA THIS AFTERNOON AHEAD OF A STRONG COLD FRONT.
   CONDITIONS ARE CONDUCIVE FOR THE RAPID GROWTH AND SPREAD OF
   WILDFIRES.

 * LOW RELATIVE HUMIDITIES BETWEEN 20 AND 25 PERCENT.

 * STRONG WINDS WITH GUSTS TO 30 MPH AHEAD OF THE FRONT.

IMPACTS...
 * ANY FIRES WILL QUICKLY SPREAD OUT OF CONTROL AND ENDANGER 
   LIVES AND PROPERTY. 

DEFINITION...
 * 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.

PRECAUTIONARY/PREPAREDNESS ACTIONS...
 * DISPOSE OF CIGARETTES PROPERLY AND AVOID ACTIVITIES THAT 
   COULD START FIRES. 

 * STAY TUNED TO NOAA WEATHER RADIO...COMMERCIAL RADIO OR 
   TELEVISION FOR THE LATEST INFORMATION CONCERNING THIS WEATHER 
   EVENT. ADDITIONAL WEATHER INFORMATION CAN ALSO BE FOUND AT: 
   WEATHER.GOV/TULSA. 

&&

$$

The office that day

Everything else NWS Tulsa, OK issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 7, 3:22 AM CDTWind AdvisoryTSACraig, Creek, Delaware, Mayes, Nowata, Okfuskee and 7 more17 hr
Sep 7, 2:49 PM CDTSpecial Weather StatementTSANowata, Osage, Washington41 min
Sep 7, 2:53 PM CDTSevere Thunderstorm WarningTSACraig, Nowata, Rogers, Washington67 min
Sep 7, 3:01 PM CDTSevere Thunderstorm WarningTSACraig, Nowata44 min
Sep 7, 3:32 PM CDTSpecial Weather StatementTSAWagoner28 min
Sep 7, 3:40 PM CDTSevere Thunderstorm WarningTSACraig, Delaware, Ottawa50 min
Sep 7, 3:46 PM CDTSevere Thunderstorm WarningTSACraig, Mayes, Rogers44 min
Sep 7, 3:54 PM CDTSpecial Weather StatementTSACreek, Okfuskee51 min
Sep 7, 3:58 PM CDTSevere Thunderstorm WarningTSACherokee, Muskogee, Wagoner17 min
Sep 7, 4:04 PM CDTSevere Thunderstorm WarningTSACreek, Okfuskee, Okmulgee56 min
Sep 7, 4:09 PM CDTSevere Thunderstorm WarningTSAAdair, Cherokee, Delaware, Mayes51 min
Sep 7, 4:25 PM CDTSevere Thunderstorm WarningTSADelaware, Ottawa35 min
Sep 7, 4:36 PM CDTSevere Thunderstorm WarningTSACherokee, Mayes, Muskogee, Okmulgee, Wagoner39 min
Sep 7, 4:53 PM CDTSevere Thunderstorm WarningTSAMcIntosh, Muskogee, Okmulgee, Wagoner52 min
Sep 7, 5:01 PM CDTSevere Thunderstorm WarningTSAAdair, Cherokee, Delaware, Muskogee, Sequoyah59 min
Sep 7, 5:30 PM CDTSevere Thunderstorm WarningTSAHaskell, LeFlore, McIntosh, Muskogee, Pittsburg, Sequoyah60 min
Sep 7, 5:55 PM CDTSevere Thunderstorm WarningTSAAdair, Haskell, Latimer, LeFlore, Sequoyah65 min
Sep 7, 6:21 PM CDTSpecial Weather StatementTSALatimer24 min
Sep 7, 6:37 PM CDTSevere Thunderstorm WarningTSALeFlore38 min
Sep 7, 6:56 PM CDTSpecial Weather StatementTSALeFlore34 min

Nearby

Red Flag Warnings in Oklahoma, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.