Alert archive / Arkansas / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 297, NWS Tulsa, OK

May 12, 2011LeFlore County, Oklahoma; Crawford County, Sebastian County, Arkansas

NWS Tulsa, OK issued this severe thunderstorm warning at May 12, 2011, 8:52 PM CDT for LeFlore County, Oklahoma; Crawford County, Sebastian County, Arkansas. It was in force for 68 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: May 12, 2011, 8:52 PM CDT (01:52 UTC)
Expired: May 12, 2011, 10:00 PM CDT
In force: 68 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon

Counties Crawford County, AR, Sebastian County, AR, LeFlore County, OK

The radar

The Western Arkansas radar (KSRX), 5 km from the middle of the area, began a volume at 01:54 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 12, 3:17 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 1.9 hours before the alert went out and 189 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1521 J/kg
Mixed-layer CIN: -8 J/kg
Mixed-layer LCL: 1233 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 84 m²/s²
0-3 km storm-relative helicity: 153 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 6.8

Open this sounding in Storm Lab

The text

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

307 
WUUS54 KTSA 130152
SVRTSA
ARC033-131-OKC079-130300-
/O.NEW.KTSA.SV.W.0297.110513T0152Z-110513T0300Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
852 PM CDT THU MAY 12 2011

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN CRAWFORD COUNTY IN NORTHWEST ARKANSAS
  NORTHEASTERN LE FLORE COUNTY IN SOUTHEAST OKLAHOMA
  NORTHERN SEBASTIAN COUNTY IN WEST CENTRAL ARKANSAS

* UNTIL 1000 PM CDT

* AT 850 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 3 MILES SOUTHEAST
  OF SPIRO...MOVING EAST AT 15 MPH.

  STORM HAZARDS INCLUDE...
  QUARTER SIZE HAIL...
  WIND GUSTS TO 60 MPH...

* SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
  CAMERON...POCOLA...BONANZA...HACKETT...EXCELSIOR...JENNY LIND...
  BARLING...GREENWOOD...BLOOMER...BURNVILLE...WASHBURN AND LAVACA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PEOPLE OUTSIDE SHOULD MOVE TO A SAFE SHELTER...PREFERABLY INSIDE A
STRONG BUILDING. STAY AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.

&&

LAT...LON 3515 9409 3512 9460 3529 9466 3532 9456
      3530 9454 3531 9451 3530 9449 3534 9450
      3546 9410
TIME...MOT...LOC 0153Z 259DEG 14KT 3522 9456

$$

3 follow-up statements

242 
WWUS54 KTSA 130215
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
915 PM CDT THU MAY 12 2011

OKC079-130225-
/O.CAN.KTSA.SV.W.0297.000000T0000Z-110513T0300Z/
LE FLORE OK-
915 PM CDT THU MAY 12 2011

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN LE FLORE COUNTY
IS CANCELLED...

LAT...LON 3515 9409 3513 9444 3534 9444 3535 9443
      3536 9443 3546 9410
TIME...MOT...LOC 0215Z 252DEG 25KT 3529 9431

$$

ARC033-131-130300-
/O.CON.KTSA.SV.W.0297.000000T0000Z-110513T0300Z/
CRAWFORD AR-SEBASTIAN AR-
915 PM CDT THU MAY 12 2011

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1000 PM CDT
FOR NORTHERN SEBASTIAN AND SOUTHERN CRAWFORD COUNTIES...

AT 912 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR RYE HILL...
MOVING EAST AT 30 MPH.

STORM HAZARDS INCLUDE...
QUARTER SIZE HAIL...
WIND GUSTS TO 60 MPH...

SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...BARLING...
GREENWOOD...CENTRAL CITY...BURNVILLE...MILLTOWN...LAVACA...WASHBURN
AND BLOOMER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PEOPLE OUTSIDE SHOULD MOVE TO A SAFE SHELTER...PREFERABLY INSIDE A
STRONG BUILDING. STAY AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.

&&

LAT...LON 3515 9409 3513 9444 3534 9444 3535 9443
      3536 9443 3546 9410
TIME...MOT...LOC 0215Z 252DEG 25KT 3529 9431

$$

864 
WWUS54 KTSA 130240
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
940 PM CDT THU MAY 12 2011

ARC033-131-130300-
/O.CON.KTSA.SV.W.0297.000000T0000Z-110513T0300Z/
CRAWFORD AR-SEBASTIAN AR-
940 PM CDT THU MAY 12 2011

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1000 PM CDT
FOR NORTHERN SEBASTIAN AND SOUTHERN CRAWFORD COUNTIES...

AT 935 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM BARLING TO HACKETT...MOVING EAST AT 15 MPH.

STORM HAZARDS INCLUDE...
QUARTER SIZE HAIL...
WIND GUSTS TO 60 MPH...

SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...CENTRAL
CITY...EXCELSIOR...GREENWOOD...LAVACA...BLOOMER...BURNVILLE...
WASHBURN AND MILLTOWN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PEOPLE OUTSIDE SHOULD MOVE TO A SAFE SHELTER...PREFERABLY INSIDE A
STRONG BUILDING. STAY AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.

&&

LAT...LON 3515 9409 3513 9444 3534 9444 3535 9443
      3536 9443 3546 9410
TIME...MOT...LOC 0240Z 272DEG 15KT 3534 9425 3514 9436

$$

572 
WWUS54 KTSA 130258
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
958 PM CDT THU MAY 12 2011

ARC033-131-130308-
/O.EXP.KTSA.SV.W.0297.000000T0000Z-110513T0300Z/
CRAWFORD AR-SEBASTIAN AR-
958 PM CDT THU MAY 12 2011

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN SEBASTIAN AND
SOUTHERN CRAWFORD COUNTIES EXPIRES AT 1000 PM CDT...

THE THUNDERSTORM HAS WEAKENED BELOW SEVERE LIMITS...THEREFORE THE
SEVERE THUNDERSTORM WARNING WILL BE ALLOWED TO EXPIRE.

GUSTY WINDS AND HEAVY RAIN WILL STILL BE POSSIBLE WITH THIS STORM.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 10 PM CDT!

LAT...LON 3515 9409 3513 9444 3534 9444 3535 9443
      3536 9443 3546 9410
TIME...MOT...LOC 0258Z 272DEG 15KT 3534 9416 3514 9427

$$

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Tulsa, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at May 12, 8:50 PM CDT, 2 minutes earlier.

Area forecast discussion, May 12, 8:50 PM CDT, 2 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
850 PM CDT THU MAY 12 2011

.DISCUSSION...
SCATTERED STRONG TO SEVERE THUNDERSTORMS CONTINUE ACROSS
SOUTHEASTERN OKLAHOMA AND INTO NORTHWEST ARKANSAS THIS EVENING
IN ADVANCE OF A COLD FRONT THAT IS CURRENTLY PUSHING INTO
OSAGE AND PAWNEE COUNTIES IN NORTHEAST OKLAHOMA. THESE STORMS
WILL CONTINUE TO PUSH OFF TO THE EAST-NORTHEAST WITH THE
MAJORITY OF THE ACTIVITY OUT OF THE AREA BY MIDNIGHT. MAY
ALSO SEE A FEW SHOWERS AND THUNDERSTORMS LATE TONIGHT ACROSS
NORTHEAST OKLAHOMA AND NORTHWEST ARKANSAS AS A MID-LEVEL
LOW CURRENTLY OVER CENTRAL KANSAS MOVES TO THE SOUTHEAST
AND THE AFOREMENTIONED COLD FRONT MOVES THROUGH THE REGION.

WILL CONTINUE TO MAKE ADJUSTMENTS TO THE GRIDS OVER THE NEXT
COUPLE OF HOURS AS THE SITUATION ACROSS THE AREA REMAINS FLUID.

&&

.TSA WATCHES/WARNINGS/ADVISORIES...
OK...NONE.
AR...NONE.
&&

SHORT TERM...06
LONG TERM....10

Hazardous weather outlook, May 12, 6:15 PM CDT, 2 hours 37 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TULSA OK
615 PM CDT THU MAY 12 2011

ARZ001-002-010-011-019-020-029-OKZ049-053>076-131000-
ADAIR OK-BENTON AR-CARROLL AR-CHEROKEE OK-CHOCTAW OK-CRAIG OK-
CRAWFORD AR-CREEK OK-DELAWARE OK-FRANKLIN AR-HASKELL OK-LATIMER OK-
LE FLORE OK-MADISON AR-MAYES OK-MCINTOSH OK-MUSKOGEE OK-NOWATA OK-
OKFUSKEE OK-OKMULGEE OK-OSAGE OK-OTTAWA OK-PAWNEE OK-PITTSBURG OK-
PUSHMATAHA OK-ROGERS OK-SEBASTIAN AR-SEQUOYAH OK-TULSA OK-WAGONER OK-
WASHINGTON OK-WASHINGTON AR-
615 PM CDT THU MAY 12 2011

...HAIL TO THE SIZE OF BASEBALLS POSSIBLE THIS EVENING...

THIS OUTLOOK IS FOR NORTHWEST AND WEST CENTRAL ARKANSAS AS WELL AS
MUCH OF EASTERN OKLAHOMA.

.DAY ONE...THIS EVENING AND TONIGHT.
TORNADO.
	RISK...LIMITED.
	AREA...EASTERN OKLAHOMA AND NORTHWEST ARKANSAS.
	ONSET...ONGOING.

SEVERE THUNDERSTORM.
	RISK...CRITICAL.
	AREA...EASTERN OKLAHOMA AND NORTHWEST ARKANSAS.
	ONSET...ONGOING.

	AREA AT GREATEST RISK...SOUTH OF EAST OF INTERSTATE 44.

FLASH FLOOD.
	RISK...LIMITED.
	AREA...EASTERN OKLAHOMA AND NORTHWEST ARKANSAS.
	ONSET...ONGOING.

HEAVY RAIN.
	RISK...LIMITED.
	AREA...EASTERN OKLAHOMA AND NORTHWEST ARKANSAS.
	ONSET...ONGOING.

DISCUSSION...
SCATTERED SEVERE THUNDERSTORMS HAVE DEVELOPED ACROSS EASTERN
OKLAHOMA AND NORTHWEST ARKANSAS...MAINLY ALONG AND EAST OF
THE INTERSTATE 44 CORRIDOR. THE MAIN THREAT FROM THESE STORMS
WILL BE LARGE HAIL TO THE SIZE OF BASEBALLS. SOME OF THE STORMS
WILL BECOME SUPERCELLULAR EARLY THIS EVENING AND WILL HAVE THE
POTENTIAL TO PRODUCE A TORNADO. THE THUNDERSTORMS MAY CONGEAL INTO
A LINE LATER THIS EVENING WITH THE THREAT FOR DAMAGING WINDS BECOMING
MORE OF A CONCERN. THE THREAT FOR THUNDERSTORMS WILL END LATE TONIGHT
AS A COLD FRONT SWEEPS THROUGH THE AREA.

LOCALLY HEAVY RAINFALL WILL ALSO BE POSSIBLE THROUGH THE
EVENING...AND MAY POSE A RISK OF ISOLATED FLASH FLOODING
ACROSS FAR EASTERN OKLAHOMA AND NORTHWEST ARKANSAS WHERE
STORM COVERAGE WILL BE HIGHEST.

SPOTTER AND EMERGENCY MANAGEMENT ACTION STATEMENT...
ACTIVATION OF THE REGIONAL SPOTTER NETWORK EXPECTED.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.
FRIDAY...THUNDERSTORM POTENTIAL.
SATURDAY THROUGH MONDAY...NO HAZARDS.
TUESDAY AND WEDNESDAY...THUNDERSTORM POTENTIAL.

EXTENDED DISCUSSION...
ISOLATED THUNDERSTORMS WILL REMAIN POSSIBLE ACROSS FAR
NORTHWEST ARKANSAS ON FRIDAY...THOUGH SEVERE WEATHER
IS NOT EXPECTED.  DRY AND COOL WEATHER WILL PREVAIL
THROUGH THE WEEKEND...WITH INCREASING THUNDERSTORM
CHANCES FOR EARLY NEXT WEEK.

WWW.SRH.NOAA.GOV/TULSA CONTAINS ADDITIONAL INFORMATION.

In the hours before

Special weather statement, May 12, 8:12 PM CDT, 40 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
812 PM CDT THU MAY 12 2011

ARZ019-020-029-OKZ076-130215-
CRAWFORD AR-FRANKLIN AR-LE FLORE OK-SEBASTIAN AR-
812 PM CDT THU MAY 12 2011

...SIGNIFICANT WEATHER ADVISORY...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 915 PM CDT
FOR THE FOLLOWING COUNTIES...

IN NORTHWEST ARKANSAS
     CRAWFORD

IN WEST CENTRAL ARKANSAS
     FRANKLIN AND SEBASTIAN

IN SOUTHEAST OKLAHOMA
     NORTHEASTERN LE FLORE

AT 812 PM CDT...STRONG THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 2 MILES SOUTHEAST OF CHESTER TO FORT SMITH TO
POCOLA...MOVING EAST AT 20 MPH. SOME LOCATIONS THAT WILL BE AFFECTED
BY THESE STORMS INCLUDE...ROCK ISLAND...POCOLA...BRADEN...ARKOMA...
PLEASANT HILL...PARADISE...CROSSROADS...MILLTOWN...MILL CREEK...
PINEY...ALIX...TAFT...CONCORD...BIDVILLE...OZARK...MULBERRY...
CHARLESTON...BRANCH...URSULA...PETER PENDER...VESTA...MEG...
DENNING...CECIL...ALTUS...TONEY...LONELM...CRAVENS...WATALULA...
JETHRO...MOUNTAIN TOP...FERN...BARNES...TURNERS BEND...CASS...
REDDING...WIEDERKEHR VILLAGE...FORT SMITH...HACKETT...GREENWOOD...
BARLING...LAVACA...DAYTON...WITCHERVILLE...WASHBURN...BURNVILLE...
JENSON...EXCELSIOR...BONANZA...FORT CHAFFEE...JENNY LIND...RYE
HILL...BLOOMER...CENTRAL CITY...MOUNTAINBURG...VAN BUREN...ALMA...
CHESTER...KIBLER...SHIBLEY...FURRY...DYER...RUDY...LOCKE AND MOUNT
GAYLER.

THESE STORMS WILL BE CAPABLE OF PRODUCING WIND GUSTS TO 50 MPH.
RESIDENTS IN THESE AREAS SHOULD REMAIN ALERT IN CASE THE SIGNIFICANT
WEATHER ADVISORY IS UPGRADED TO A WARNING.

LAT...LON 3536 9374 3540 9380 3532 9380 3531 9391
      3523 9392 3522 9402 3513 9403 3514 9413
      3510 9413 3508 9418 3516 9457 3537 9447
      3538 9444 3542 9444 3575 9416 3576 9370
      3538 9371
TIME...MOT...LOC 0112Z 279DEG 17KT 3566 9411 3537 9435
          3521 9445

Special weather statement, May 12, 8:19 PM CDT, 33 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
819 PM CDT THU MAY 12 2011

OKZ068-130145-
CHEROKEE OK-
819 PM CDT THU MAY 12 2011

...SIGNIFICANT WEATHER ADVISORY...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 845 PM CDT
FOR THE FOLLOWING COUNTY...

IN EAST CENTRAL OKLAHOMA
     SOUTHEASTERN CHEROKEE

AT 819 PM CDT...A STRONG THUNDERSTORM WAS CENTERED 5 MILES SOUTHWEST
OF COOKSON...MOVING NORTHEAST AT 25 MPH. SOME LOCATIONS THAT WILL BE
AFFECTED BY THIS STORM INCLUDE...COOKSON.

THIS STORM WILL BE CAPABLE OF PRODUCING PENNY SIZE HAIL. THIS STORM
WILL BE CAPABLE OF PRODUCING WIND GUSTS TO 50 MPH. RESIDENTS IN THESE
AREAS SHOULD REMAIN ALERT IN CASE THE SIGNIFICANT WEATHER ADVISORY IS
UPGRADED TO A WARNING.

LAT...LON 3583 9480 3565 9481 3563 9495 3564 9502
      3570 9502 3584 9481
TIME...MOT...LOC 0119Z 240DEG 22KT 3568 9496

Local storm report, May 12, 8:21 PM CDT, 31 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE
821 PM CDT THU MAY 12 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0748 PM     TSTM WND DMG     OZARK                   35.49N 93.83W
05/12/2011                   FRANKLIN           AR   EMERGENCY MNGR

            TREE DOWN IN OZARK

&&

SFP

Local storm report, May 12, 8:23 PM CDT, 29 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
823 PM CDT THU MAY 12 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0611 PM     HAIL             SALLISAW                35.46N 94.79W
05/12/2011  M3.00 INCH       SEQUOYAH           OK   BROADCAST MEDIA

            HAIL WAS MEASURED AND PHOTO WAS SENT TO KFSM

&&

EJC

Local storm report, May 12, 8:27 PM CDT, 25 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE
827 PM CDT THU MAY 12 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0748 PM     HAIL             OZARK                   35.49N 93.83W
05/12/2011  E1.75 INCH       FRANKLIN           AR   EMERGENCY MNGR

&&

SFP

Special weather statement, May 12, 8:42 PM CDT, 10 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
842 PM CDT THU MAY 12 2011

OKZ073-075-130215-
LATIMER OK-PITTSBURG OK-
842 PM CDT THU MAY 12 2011

...SIGNIFICANT WEATHER ADVISORY...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 915 PM CDT
FOR THE FOLLOWING COUNTIES...

IN SOUTHEAST OKLAHOMA
     SOUTHERN PITTSBURG AND SOUTHWESTERN LATIMER

AT 842 PM CDT...A STRONG THUNDERSTORM WAS LOCATED 3 MILES SOUTHEAST
OF BLANCO...MOVING EAST AT 15 MPH. SOME LOCATIONS THAT WILL BE
AFFECTED BY THIS STORM INCLUDE...GOWEN...BLANCO...HARTSHORNE AND
HAILEYVILLE.

THIS STORM WILL BE CAPABLE OF PRODUCING NICKEL SIZE HAIL AND WIND
GUSTS TO 50 MPH. RESIDENTS IN THESE AREAS SHOULD REMAIN ALERT IN CASE
THE SIGNIFICANT WEATHER ADVISORY IS UPGRADED TO A WARNING.

LAT...LON 3463 9580 3481 9585 3489 9547 3468 9542
      3468 9551 3466 9552
TIME...MOT...LOC 0142Z 259DEG 14KT 3474 9572

The office that day

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

Issued	Product	Office	Counties	Lasted
May 12, 7:02 PM CDT	Special Weather Statement	TSA	Delaware	28 min
May 12, 7:08 PM CDT	Severe Thunderstorm Warning	TSA	LeFlore, Sequoyah	67 min
May 12, 7:13 PM CDT	Special Weather Statement	TSA	Mayes	32 min
May 12, 7:22 PM CDT	Severe Thunderstorm Warning	TSA	Delaware, Mayes	38 min
May 12, 7:26 PM CDT	Areal Flood Advisory	TSA	LeFlore, Sequoyah	3 hr
May 12, 7:35 PM CDT	Severe Thunderstorm Warning	TSA	Delaware, Ottawa	23 min
May 12, 8:08 PM CDT	Special Weather Statement	TSA	Pittsburg	37 min
May 12, 8:19 PM CDT	Special Weather Statement	TSA	Cherokee	26 min
May 12, 8:35 PM CDT	Flash Flood Warning	TSA	LeFlore, Sequoyah	4 hr
May 12, 8:42 PM CDT	Special Weather Statement	TSA	Pittsburg	33 min
May 12, 8:55 PM CDT	Special Weather Statement	TSA	Pittsburg	35 min
May 13, 12:23 AM CDT	Areal Flood Warning	TSA	LeFlore, Sequoyah	6 hr
May 12, 7:00 PM CDT	Severe Thunderstorm Warning	TSA	Carroll, Madison	42 min
May 12, 7:01 PM CDT	Special Weather Statement	TSA	Franklin	44 min
May 12, 7:12 PM CDT	Severe Thunderstorm Warning	TSA	Madison, Washington	20 min
May 12, 7:15 PM CDT	Severe Thunderstorm Warning	TSA	Carroll, Madison	26 min
May 12, 7:49 PM CDT	Areal Flood Advisory	TSA	Carroll, Franklin, Madison, Washington	56 min
May 12, 7:49 PM CDT	Special Weather Statement	TSA	Carroll	41 min
May 12, 8:12 PM CDT	Special Weather Statement	TSA	Crawford, Franklin, Sebastian	63 min
May 12, 8:57 PM CDT	Areal Flood Advisory	TSA	Carroll, Franklin, Madison, Washington	108 min
May 12, 9:00 PM CDT	Special Weather Statement	TSA	Crawford	30 min
May 12, 9:37 PM CDT	Special Weather Statement	TSA	Franklin	53 min
May 12, 9:59 PM CDT	Special Weather Statement	TSA	Franklin	46 min
May 12, 10:32 PM CDT	Special Weather Statement	TSA	Crawford	28 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 2011 Severe Thunderstorm Warnings in Oklahoma, 2011 Every severe thunderstorm 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.