Alert archive / Oklahoma / Flash Flood Warnings in 2011

Flash Flood Warning 27, NWS Tulsa, OK

May 1, 20118 counties in Oklahoma; 7 counties in Arkansas

NWS Tulsa, OK issued this flash flood warning at May 1, 2011, 6:13 PM CDT for 8 counties in Oklahoma; 7 counties in Arkansas. It was in force for 6 hr. 7 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
May 1, 2011, 6:13 PM CDT (23:13 UTC)
Expired
May 2, 2011, 12:00 AM CDT
In force
6 hr
Issued by
NWS Tulsa, OK
Area
Storm-based polygon
Flood severity
None

Counties Benton County, AR, Carroll County, AR, Crawford County, AR, Franklin County, AR, Madison County, AR, Sebastian County, AR, Washington County, AR, Adair County, OK, Cherokee County, OK, Haskell County, OK, Latimer County, OK, LeFlore County, OK, Pittsburg County, OK, Pushmataha County, OK, Sequoyah County, OK

The radar

The Western Arkansas radar (KSRX), 17 km from the middle of the area, began a volume at 23:13 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
May 1, 8:41 PM CDTFLASH FLOODVan Buren, ARWATER FLOWING OVER PORTIONS OF PEVEHOUSE ROAD
May 1, 8:43 PM CDTFLASH FLOODCedarville, ARWATER FLOWING OVER PORTIONS OF MILL POND ROAD
May 1, 8:44 PM CDTFLASH FLOODPocola, OKSEVERAL STREETS IMPASSABLE DUE TO HIGH WATER
May 1, 9:45 PM CDTFLASH FLOOD7 Nw Wilburton, OKSEVERAL ROADS CLOSED ACROSS THE COUNTY
May 1, 9:45 PM CDTFLASH FLOODPanola, OKSEVERAL ROADS CLOSED ACROSS THE COUNTY
May 1, 9:50 PM CDTFLASH FLOOD5 S Stigler, OKWATER OVER ROADWAY.
May 1, 9:53 PM CDTFLASH FLOOD4 E Sallisaw, OKONE FOOT OF WATER OVER ROADWAY

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

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 11.2 hours before the alert went out and 180 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, Springfield, MO at 12:00Z on 2011-05-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Springfield, MO at 12:00Z on 2011-05-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -107 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2708 m above ground
0-6 km bulk shear
58 kt
0-1 km storm-relative helicity
-107 m²/s²
0-3 km storm-relative helicity
179 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

729 
WGUS54 KTSA 012313
FFWTSA
ARC007-015-033-047-087-131-143-OKC001-021-061-077-079-121-127-135-
020500-
/O.NEW.KTSA.FF.W.0027.110501T2313Z-110502T0500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TULSA OK
613 PM CDT SUN MAY 1 2011

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  ADAIR COUNTY IN NORTHEAST OKLAHOMA...
  BENTON COUNTY IN NORTHWEST ARKANSAS...
  CARROLL COUNTY IN NORTHWEST ARKANSAS...
  CRAWFORD COUNTY IN NORTHWEST ARKANSAS...
  FRANKLIN COUNTY IN WEST CENTRAL ARKANSAS...
  HASKELL COUNTY IN SOUTHEAST OKLAHOMA...
  LATIMER COUNTY IN SOUTHEAST OKLAHOMA...
  LE FLORE COUNTY IN SOUTHEAST OKLAHOMA...
  MADISON COUNTY IN NORTHWEST ARKANSAS...
  NORTHERN PUSHMATAHA COUNTY IN SOUTHEAST OKLAHOMA...
  PITTSBURG COUNTY IN SOUTHEAST OKLAHOMA...
  SEBASTIAN COUNTY IN WEST CENTRAL ARKANSAS...
  SEQUOYAH COUNTY IN EAST CENTRAL OKLAHOMA...
  SOUTHEASTERN CHEROKEE COUNTY IN EAST CENTRAL OKLAHOMA...
  WASHINGTON COUNTY IN NORTHWEST ARKANSAS...

* UNTIL MIDNIGHT CDT

* AT 612 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  HEAVY RAIN ACROSS THE WARNED AREA. 2 TO 3 INCHES OF RAINFALL HAS   
  ALREADY OCCURRED WITH AN ADDITIONAL 2 TO 3 INCHES POSSIBLE. 

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT COULD EXPERIENCE FLOODING INCLUDE...
  BENTONVILLE...BERRYVILLE...CEDARVILLE...CHARLESTON...CLAYTON...
  EUREKA SPRINGS...FAYETTEVILLE...FORT SMITH...HUNTSVILLE...
  MCALESTER...MOUNTAINBURG...NATURAL DAM...OZARK...POTEAU...ROGERS...
  SALLISAW...SPRINGDALE...STIGLER...STILWELL...VAN BUREN...
  WILBURTON...ALBION...ALDERSON...ALMA...ALPENA...ALTUS...ARKOMA...
  ASHLAND...AURORA AND BARLING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE WATER COVERS THE ROAD TO
UNKNOWN DEPTHS. IT ONLY TAKES TWO FEET OF RUSHING WATER TO CARRY AWAY
MOST SPORT UTILITY VEHICLES AND PICKUPS. TAKE A DIFFERENT ROUTE TO
REACH YOUR DESTINATION OR WAIT UNTIL THE WATER RECEDES. REMEMBER...
MOST FLOOD RELATED DEATHS OCCUR IN AUTOMOBILES.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. DO
NOT ENTER THE WATER. TURN AROUND AND MOVE UP TO HIGHER GROUND TO
ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN
WATER BEGINS RISING.

&&

LAT...LON 3612 9346 3577 9351 3576 9368 3538 9369
      3508 9422 3495 9424 3492 9444 3450 9446
      3451 9504 3441 9504 3469 9610 3484 9610
      3524 9563 3532 9541 3528 9521 3547 9507
      3567 9513 3650 9412 3649 9329 3613 9328

$$
1 follow-up statement
606 
WGUS74 KTSA 020129
FFSTSA

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
829 PM CDT SUN MAY 1 2011

OKC021-020137-
/O.CAN.KTSA.FF.W.0027.000000T0000Z-110502T0500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CHEROKEE OK-
829 PM CDT SUN MAY 1 2011

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR SOUTHEASTERN
CHEROKEE COUNTY IS CANCELLED...

LAT...LON 3612 9346 3577 9351 3576 9368 3539 9369
      3539 9379 3532 9380 3508 9422 3496 9424
      3492 9444 3450 9446 3451 9504 3441 9504
      3469 9610 3517 9553 3527 9522 3565 9481
      3602 9471 3650 9413 3649 9329 3613 9328

$$

ARC007-015-033-047-087-131-143-OKC001-061-077-079-121-127-135-020500-
/O.CON.KTSA.FF.W.0027.000000T0000Z-110502T0500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WASHINGTON AR-CARROLL AR-SEBASTIAN AR-CRAWFORD AR-FRANKLIN AR-
BENTON AR-MADISON AR-ADAIR OK-SEQUOYAH OK-HASKELL OK-LE FLORE OK-
PITTSBURG OK-PUSHMATAHA OK-LATIMER OK-
829 PM CDT SUN MAY 1 2011

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR MADISON...BENTON...
CRAWFORD...CARROLL AND WASHINGTON COUNTIES IN NORTHWEST ARKANSAS...
AND FRANKLIN AND SEBASTIAN COUNTIES IN WEST CENTRAL ARKANSAS...AND
SEQUOYAH COUNTY IN EAST CENTRAL OKLAHOMA...AND ADAIR COUNTY IN
NORTHEAST OKLAHOMA...AND LATIMER...NORTHERN PUSHMATAHA...PITTSBURG...
LE FLORE AND HASKELL COUNTIES IN SOUTHEAST OKLAHOMA UNTIL MIDNIGHT
CDT...

AT 827 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
HEAVY RAIN ACROSS A LARGE PORTION OF SOUTHEAST OKLAHOMA AND 
NORTHWEST ARKANSAS. 2 TO 3 INCHES OF RAINFALL HAS ALREADY OCCURRED 
ALONG A 10 TO 20 MILE SWATH EITHER SIDE OF A BLANCO...WILBURTON 
...LEQUIRE...GANS...MOUNTAINBURG LINE. AN ADDITIONAL 2 TO 3 
INCHES WILL BE POSSIBLE EAST OF THIS AREA AS HEAVY RAIN CONTINUES.  

RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLASH FLOODING INCLUDE...
BENTONVILLE...BERRYVILLE...CEDARVILLE...CHARLESTON...CLAYTON...EUREKA
SPRINGS...FAYETTEVILLE...FORT SMITH...HUNTSVILLE...MCALESTER...
MOUNTAINBURG...NATURAL DAM...OZARK...POTEAU...ROGERS...SALLISAW...
SPRINGDALE...STIGLER...STILWELL...VAN BUREN...WILBURTON...ALBION...
ALDERSON...ALMA...ALPENA...ALTUS...ARKOMA...AURORA...BARLING AND
BARON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE WATER COVERS THE ROAD TO
UNKNOWN DEPTHS. IT ONLY TAKES TWO FEET OF RUSHING WATER TO CARRY AWAY
MOST SPORT UTILITY VEHICLES AND PICKUPS. TAKE A DIFFERENT ROUTE TO
REACH YOUR DESTINATION OR WAIT UNTIL THE WATER RECEDES. REMEMBER...
MOST FLOOD RELATED DEATHS OCCUR IN AUTOMOBILES.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. DO
NOT ENTER THE WATER. TURN AROUND AND MOVE UP TO HIGHER GROUND TO
ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN
WATER BEGINS RISING.

&&

LAT...LON 3612 9346 3577 9351 3576 9368 3539 9369
      3539 9379 3532 9380 3508 9422 3496 9424
      3492 9444 3450 9446 3451 9504 3441 9504
      3469 9610 3517 9553 3527 9522 3565 9481
      3602 9471 3650 9413 3649 9329 3613 9328

$$

The office that day

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

IssuedProductOfficeCountiesLasted
May 1, 7:01 AM CDTSevere Thunderstorm WarningTSAChoctaw44 min
May 1, 7:14 AM CDTSpecial Weather StatementTSAPushmataha31 min
May 1, 7:35 AM CDTSevere Thunderstorm WarningTSAChoctaw, Pushmataha55 min
May 1, 8:28 AM CDTSpecial Weather StatementTSALatimer47 min
May 1, 8:38 AM CDTSpecial Weather StatementTSAChoctaw67 min
May 1, 9:11 AM CDTSevere Thunderstorm WarningTSAChoctaw26 min
May 1, 9:36 AM CDTSpecial Weather StatementTSAPushmataha24 min
May 1, 11:58 AM CDTAreal Flood WarningTSAAdair, Cherokee24 hr
May 1, 1:54 PM CDTSpecial Weather StatementTSAPushmataha66 min
May 1, 2:43 PM CDTSevere Thunderstorm WarningTSALatimer32 min
May 1, 3:04 PM CDTSpecial Weather StatementTSALatimer26 min
May 1, 3:17 PM CDTAreal Flood AdvisoryTSALatimer, Pittsburg, Pushmataha88 min
May 1, 3:28 PM CDTSpecial Weather StatementTSALeFlore32 min
May 1, 3:44 PM CDTSpecial Weather StatementTSAMayes, Wagoner31 min
May 1, 3:47 PM CDTSpecial Weather StatementTSAWagoner28 min
May 1, 4:04 PM CDTSevere Thunderstorm WarningTSACherokee, Delaware, Mayes26 min
May 1, 4:27 PM CDTSpecial Weather StatementTSALatimer33 min
May 1, 4:40 PM CDTAreal Flood AdvisoryTSAHaskell, Latimer, LeFlore, Pittsburg, Pushmataha, Sequoyah110 min
May 1, 5:37 PM CDTAreal Flood AdvisoryTSALeFlore, Sequoyah53 min
May 1, 3:55 PM CDTSpecial Weather StatementTSASebastian35 min
May 1, 4:13 PM CDTSpecial Weather StatementTSACrawford, Sebastian32 min
May 1, 4:43 PM CDTSpecial Weather StatementTSAFranklin32 min

Nearby

Flash Flood Warnings in Oklahoma, 2011Flash Flood Warnings in Arkansas, 2011Every flash flood 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.