Alert archive / Arkansas / Special Weather Statements in 2011

Special Weather Statement, NWS Tulsa, OK

May 22, 2011Crawford County, Arkansas

NWS Tulsa, OK issued this special weather statement at May 22, 2011, 10:37 PM CDT for Crawford County, Arkansas. It was in force for 23 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 22, 2011, 10:37 PM CDT (03:37 UTC)
Expired: May 22, 2011, 11:00 PM CDT
In force: 23 min
Issued by: NWS Tulsa, OK

County Crawford County, AR

The radar

The Western Arkansas radar (KSRX), 16 km from the middle of the area, began a volume at 03:39 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, 3.6 hours before the alert went out and 170 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: 3961 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 641 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 183 m²/s²
0-3 km storm-relative helicity: 180 m²/s²
Significant tornado parameter: 3.7
Supercell composite: 15.9

Open this sounding in Storm Lab

The text

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

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at May 22, 9:46 PM CDT, 51 minutes earlier.

Area forecast discussion, May 22, 9:46 PM CDT, 51 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
946 PM CDT SUN MAY 22 2011

...UPDATE...

.DISCUSSION...
ONGOING CONVECTION IS ON THE DOWN TREND HOWEVER...AS IF OFTEN THE
CASE WITH SUCH EXTREME CAPE...STORMS MAY CONTINUE WELL INTO THE
OVERNIGHT HOURS BEFORE CONDITIONS CAN STABILIZE SUFFICIENTLY.
ALSO...THE TORNADIC THREAT HAS DECREASED BUT REMAINS SOMEWHAT
PRESENT SHOULD A STRONGER UPDRAFT DEVELOP THUS THE CURRENT TORNADO
WATCH REMAINS IN PLACE. OVERNIGHT STORMS ARE LESS APPARENT IN THE
MOST RECENT DATA...WITH ANY DEVELOPMENT LIKELY FAVORED WELL WEST
OF THE AREA THUS WILL REDUCE OVERNIGHT POPS NORTHWEST.

&&

.PRELIMINARY POINT TEMPS/POPS...
TUL   70  81  69  85 /  20  70  80  20
FSM   68  84  68  84 /  60  50  50  20
MLC   71  82  71  84 /  40  30  40  20
BVO   68  79  68  85 /  20  60  80  20
FYV   66  78  67  81 /  60  50  70  30
BYV   64  79  64  81 /  60  60  80  30
MKO   69  81  68  83 /  40  50  60  20
MIO   65  80  67  83 /  30  60  80  30
F10   70  81  70  85 /  30  50  50  20
HHW   70  84  69  84 /  60  20  30  10

&&

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

SHORT TERM...07

Hazardous weather outlook, May 22, 5:04 PM CDT, 5 hours 33 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TULSA OK
504 PM CDT SUN MAY 22 2011

ARZ001-002-010-011-019-020-029-OKZ049-053>076-231000-
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-
504 PM CDT SUN MAY 22 2011

...SEVERE THUNDERSTORMS POSSIBLE THIS EVENING... INCLUDING THE
CHANCE FOR TORNADOES AND VERY LARGE HAIL...

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

.DAY ONE...TODAY AND TONIGHT.
TORNADO.
	RISK...ELEVATED.
	AREA...EASTERN OKLAHOMA AND OKLAHOMA AND NORTHWEST ARKANSAS.
	ONSET...ANY TIME.

SEVERE THUNDERSTORM.
	RISK...ELEVATED.
	AREA...EASTERN OKLAHOMA AND OKLAHOMA AND NORTHWEST ARKANSAS.
	ONSET...ANY TIME.

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

SIGNIFICANT WINDS.
	RISK...LIMITED.
	AREA...EASTERN OKLAHOMA AND OKLAHOMA AND NORTHWEST ARKANSAS.
	ONSET...ONGOING.

DISCUSSION...
STRONG THUNDERSTORMS ARE EXPECTED TO DEVELOP ALONG A DRYLINE
SITUATED ALONG THE WESTERN PERIPHERY OF THE FORECAST AREA. WITH A
VERY MOIST AND UNSTABLE AIRMASS IN PLACE... THIS ACTIVITY SHOULD
QUICKLY BECOME SEVERE AND MOVE NORTHEASTWARD ACROSS THE REGION.
THERE WILL BE A POSSIBILITY FOR TORNADOES AND VERY LARGE HAIL.

AS STORMS EVOLVE OVERNIGHT... THE THREAT WILL SLOWLY TRANSITION TO MORE
OF A STRAIGHT LINE WIND... LARGE HAIL...AND HEAVY RAINFALL EVENT.
FLASH FLOODING POTENTIAL WILL INCREASE OVERNIGHT.

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

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY.
MONDAY...SEVERE THUNDERSTORM POTENTIAL...HIGH WIND POTENTIAL...HEAVY RAIN POTENTIAL.
TUESDAY...SEVERE THUNDERSTORM POTENTIAL...HIGH WIND POTENTIAL.
WEDNESDAY...SEVERE THUNDERSTORM POTENTIAL...HIGH WIND POTENTIAL.
THURSDAY...NO HAZARDS.
FRIDAY...NO HAZARDS.
SATURDAY...NO HAZARDS.

EXTENDED DISCUSSION...
A LOW AMPLITUDE SHORTWAVE TROUGH IS EXPECTED TO MOVE NORTHEAST
ACROSS THE REGION ON MONDAY. THIS WILL COMBINE WITH THE MOIST AND
VERY UNSTABLE AIRMASS IN PLACE TO GENERATE WIDESPREAD THUNDERSTORM
ACTIVITY ALONG THE DRYLINE AND A LINGERING FRONTAL BOUNDARY NEAR
THE KANSAS BORDER. DISCRETE STORMS WILL POSE THE RISK OF VERY
LARGE HAIL AND POSSIBLY ISOLATED TORNADOES. STORMS WILL EVENTUALLY CONGEAL
INTO CLUSTERS WITH DAMAGING WIND AND LARGE HAIL POTENTIAL BY
MONDAY NIGHT... MAINLY OVER NORTHEAST OKLAHOMA. FLASH FLOODING
WILL CONTINUE TO BE A CONCERN...ESPECIALLY IF STORMS TRACK OVER
AREAS AFFECTED BY PREVIOUS ROUNDS OF STORMS.

A SIGNIFICANT PIECE OF SHORTWAVE TROUGH ENERGY IS EXPECTED TO
EJECT INTO THE SOUTHERN PLAINS ON TUESDAY. THUNDERSTORM
DEVELOPMENT IS LIKELY ALONG THE DRYLINE AND SURGING FRONT TUESDAY
NIGHT INTO WEDNESDAY.  SEVERE WEATHER POTENTIAL IS HIGH... AS A MOIST
AND UNSTABLE AIRMASS REMAINS IN PLACE... ALONG WITH AMPLE WIND SHEAR ON
THE SOUTH SIDE OF THE SHORTWAVE TROUGH.

EMERGENCY MANAGEMENT PLANNING STATEMENT...
EMERGENCY MANAGERS WILL NEED TO MONITOR CONDITIONS AND FORECASTS
CLOSELY OVER THE NEXT SEVERAL DAYS... AS A PROLONGED PERIOD OF SEVERE
WEATHER IS LIKELY.

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

In the hours before

Special weather statement, May 22, 9:35 PM CDT, 1 hour 2 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
935 PM CDT SUN MAY 22 2011

OKZ076-230300-
LE FLORE OK-
935 PM CDT SUN MAY 22 2011

...SIGNIFICANT WEATHER ADVISORY...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 1000 PM CDT
FOR THE FOLLOWING COUNTY...

IN SOUTHEAST OKLAHOMA
     SOUTHERN LE FLORE

AT 936 PM CDT...A STRONG THUNDERSTORM WAS LOCATED 3 MILES EAST OF
TALIHINA...MOVING EAST AT 40 MPH. SOME LOCATIONS THAT WILL BE
AFFECTED BY THIS STORM INCLUDE...BENGAL...WHITESBORO...TALIHINA...
HODGEN...SUMMERFIELD...HEAVENER AND HOWE.

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 3468 9506 3486 9506 3486 9500 3487 9500
      3498 9457 3468 9452
TIME...MOT...LOC 0236Z 249DEG 33KT 3477 9498

Local storm report, May 22, 9:49 PM CDT, 48 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
949 PM CDT SUN MAY 22 2011

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

0650 PM     TSTM WND DMG     8 S CHOUTEAU            36.07N 95.34W
05/22/2011                   WAGONER            OK   NWS EMPLOYEE

            LARGE TREE LIMBS GREATER THAN 2 INCHES DOWN.

&&

PBS

Special weather statement, May 22, 10:12 PM CDT, 25 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
1012 PM CDT SUN MAY 22 2011

OKZ060-064-230345-
CREEK OK-TULSA OK-
1012 PM CDT SUN MAY 22 2011

...SIGNIFICANT WEATHER ADVISORY...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 1045 PM CDT
FOR THE FOLLOWING COUNTIES...

IN NORTHEAST OKLAHOMA
     EASTERN CREEK AND SOUTHERN TULSA

AT 1012 PM CDT...A STRONG THUNDERSTORM WAS DEVELOPING 5 MILES WEST
OF KELLYVILLE...MOVING EAST AT 35 MPH. SOME LOCATIONS THAT WILL BE
AFFECTED BY THIS STORM
INCLUDE...TULSA...GRAY...BIXBY...JENKS...GLENPOOL...MOUNDS...KIEFER..
.KELLYVILLE AND SAPULPA.

THIS STORM WILL BE CAPABLE OF PRODUCING PENNY SIZE HAIL AND WIND
GUSTS TO 40 MPH. RESIDENTS IN THESE AREAS SHOULD REMAIN ALERT IN CASE
THE SIGNIFICANT WEATHER ADVISORY IS UPGRADED TO A WARNING.

LAT...LON 3616 9605 3616 9600 3618 9600 3620 9594
      3591 9580 3585 9612 3585 9619 3584 9620
      3581 9637 3601 9641
TIME...MOT...LOC 0312Z 251DEG 31KT 3593 9627

Special weather statement, May 22, 10:14 PM CDT, 23 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
1014 PM CDT SUN MAY 22 2011

OKZ063-230345-
DELAWARE OK-
1014 PM CDT SUN MAY 22 2011

...SIGNIFICANT WEATHER ADVISORY...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 1045 PM CDT
FOR THE FOLLOWING COUNTY...

IN NORTHEAST OKLAHOMA
     NORTHERN DELAWARE

AT 1014 PM CDT...A STRONG THUNDERSTORM WAS LOCATED 3 MILES SOUTH OF
ZENA...MOVING NORTHEAST AT 40 MPH. SOME LOCATIONS THAT WILL BE
AFFECTED BY THIS STORM INCLUDE...JAY...ZENA AND GROVE.

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 3667 9462 3646 9463 3635 9487 3651 9497
TIME...MOT...LOC 0314Z 244DEG 34KT 3647 9482

Local storm report, May 22, 10:35 PM CDT, 2 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
1035 PM CDT SUN MAY 22 2011

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

1032 PM     HAIL             TULSA                   36.13N 95.92W
05/22/2011  E1.00 INCH       TULSA              OK   PUBLIC

            41ST AND HARVARD

&&

PBS

Special weather statement, May 22, 10:37 PM CDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
May 22, 7:00 PM CDT	Severe Thunderstorm Warning	TSA	McIntosh, Okfuskee, Okmulgee	45 min
May 22, 7:13 PM CDT	Tornado Warning	TSA	Adair, Cherokee, Delaware, Mayes	62 min
May 22, 7:26 PM CDT	Severe Thunderstorm Warning	TSA	McIntosh, Muskogee	49 min
May 22, 7:38 PM CDT	Areal Flood Advisory	TSA	Delaware, Ottawa	112 min
May 22, 7:39 PM CDT	Flash Flood Warning	TSA	Delaware	4 hr
May 22, 7:39 PM CDT	Tornado Warning	TSA	Delaware, Ottawa	36 min
May 22, 7:46 PM CDT	Severe Thunderstorm Warning	TSA	McIntosh, Muskogee, Okfuskee, Okmulgee	29 min
May 22, 7:51 PM CDT	Areal Flood Advisory	TSA	McIntosh, Muskogee, Okfuskee, Okmulgee	84 min
May 22, 7:53 PM CDT	Special Weather Statement	TSA	Cherokee	37 min
May 22, 8:09 PM CDT	Severe Thunderstorm Warning	TSA	Adair, Delaware	66 min
May 22, 8:09 PM CDT	Severe Thunderstorm Warning	TSA	Muskogee, Okmulgee, Wagoner	51 min
May 22, 8:16 PM CDT	Tornado Warning	TSA	Adair, Cherokee, Delaware	29 min
May 22, 8:19 PM CDT	Severe Thunderstorm Warning	TSA	Cherokee, Mayes, Wagoner	30 min
May 22, 8:20 PM CDT	Tornado Warning	TSA	Delaware	55 min
May 22, 8:32 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Delaware, Ottawa	43 min
May 22, 8:41 PM CDT	Special Weather Statement	TSA	Choctaw	34 min
May 22, 8:45 PM CDT	Tornado Warning	TSA	Delaware	45 min
May 22, 9:01 PM CDT	Severe Thunderstorm Warning	TSA	Pittsburg	44 min
May 22, 9:15 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Delaware, Mayes, Ottawa, Rogers	60 min
May 22, 9:29 PM CDT	Special Weather Statement	TSA	Latimer	31 min
May 22, 9:35 PM CDT	Special Weather Statement	TSA	LeFlore	25 min
May 22, 9:38 PM CDT	Severe Thunderstorm Warning	TSA	Latimer, LeFlore, Pittsburg	30 min
May 22, 10:12 PM CDT	Special Weather Statement	TSA	Creek, Tulsa	33 min
May 22, 10:14 PM CDT	Special Weather Statement	TSA	Delaware	31 min
May 22, 10:30 PM CDT	Severe Thunderstorm Warning	TSA	Rogers, Tulsa, Wagoner	45 min
May 22, 10:37 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Osage, Rogers, Tulsa	22 min
May 22, 10:39 PM CDT	Special Weather Statement	TSA	Delaware	36 min
May 22, 10:50 PM CDT	Severe Thunderstorm Warning	TSA	Adair, LeFlore, Sequoyah	40 min
May 22, 10:55 PM CDT	Severe Thunderstorm Warning	TSA	Delaware	35 min
May 22, 11:01 PM CDT	Severe Thunderstorm Warning	TSA	LeFlore	59 min
May 22, 11:01 PM CDT	Tornado Warning	TSA	Delaware	29 min
May 22, 11:10 PM CDT	Flash Flood Warning	TSA	Delaware	6 hr
May 22, 11:12 PM CDT	Special Weather Statement	TSA	Mayes, Rogers	33 min
May 23, 5:07 AM CDT	Areal Flood Warning	TSA	Delaware	4 hr
May 23, 5:42 AM CDT	Special Weather Statement	TSA	Osage	33 min
May 23, 5:49 AM CDT	Severe Thunderstorm Warning	TSA	Osage	26 min
May 23, 6:20 AM CDT	Severe Thunderstorm Warning	TSA	Osage	25 min
May 23, 6:50 AM CDT	Severe Thunderstorm Warning	TSA	Nowata, Washington	25 min
May 23, 7:12 AM CDT	Special Weather Statement	TSA	Osage	33 min
May 23, 7:16 AM CDT	Special Weather Statement	TSA	Nowata	29 min
May 23, 7:25 AM CDT	Severe Thunderstorm Warning	TSA	Craig, Nowata	50 min
May 23, 7:38 AM CDT	Special Weather Statement	TSA	Washington	37 min
May 23, 7:53 AM CDT	Special Weather Statement	TSA	Washington	37 min
May 23, 8:06 AM CDT	Severe Thunderstorm Warning	TSA	Nowata, Washington	39 min
May 23, 8:16 AM CDT	Severe Thunderstorm Warning	TSA	Craig, Ottawa	44 min
May 23, 8:48 AM CDT	Special Weather Statement	TSA	Pushmataha	27 min
May 23, 8:49 AM CDT	Special Weather Statement	TSA	Nowata	26 min
May 23, 8:57 AM CDT	Special Weather Statement	TSA	Craig, Ottawa	33 min
May 23, 9:01 AM CDT	Special Weather Statement	TSA	Pushmataha	44 min
May 23, 9:11 AM CDT	Special Weather Statement	TSA	Pushmataha	34 min
May 23, 9:15 AM CDT	Areal Flood Advisory	TSA	Craig, Delaware, Nowata, Ottawa	2 hr
May 23, 9:26 AM CDT	Special Weather Statement	TSA	Craig	34 min
May 23, 9:29 AM CDT	Special Weather Statement	TSA	Ottawa	31 min
May 23, 9:36 AM CDT	Special Weather Statement	TSA	Choctaw	39 min
May 23, 9:56 AM CDT	Flash Flood Warning	TSA	Craig, Delaware, Nowata, Ottawa	4 hr
May 23, 10:00 AM CDT	Special Weather Statement	TSA	Craig	30 min
May 23, 10:31 AM CDT	Special Weather Statement	TSA	Craig	29 min
May 23, 10:45 AM CDT	Areal Flood Warning	TSA	Nowata	6 hr
May 23, 11:31 AM CDT	Special Weather Statement	TSA	Craig	29 min
May 23, 11:58 AM CDT	Special Weather Statement	TSA	Craig	32 min
May 23, 12:15 PM CDT	Special Weather Statement	TSA	Adair	30 min
May 23, 1:38 PM CDT	Flash Flood Warning	TSA	Craig, Delaware, Nowata, Ottawa, Rogers	6 hr
May 23, 1:40 PM CDT	Severe Thunderstorm Warning	TSA	Ottawa	35 min
May 23, 2:08 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Nowata	49 min
May 23, 2:10 PM CDT	Severe Thunderstorm Warning	TSA	Ottawa	35 min
May 23, 2:32 PM CDT	River Flood Warning	TSA	Ottawa	42 hr
May 23, 2:37 PM CDT	River Flood Warning	TSA	Adair	60 hr
May 23, 2:37 PM CDT	River Flood Warning	TSA	Cherokee	3 days
May 23, 2:41 PM CDT	River Flood Advisory	TSA	Cherokee, Delaware	54 hr
May 23, 3:20 PM CDT	Flash Flood Watch	TSA	Adair, Cherokee, Craig, Creek, Delaware, Haskell and 14 more	34 hr
May 23, 4:24 PM CDT	Areal Flood Warning	TSA	Nowata	6 hr
May 23, 4:52 PM CDT	Severe Thunderstorm Warning	TSA	Osage	53 min
May 23, 5:06 PM CDT	Tornado Warning	TSA	Osage	24 min
May 23, 5:29 PM CDT	Tornado Warning	TSA	Osage, Pawnee	31 min
May 23, 5:41 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Mayes, Rogers	32 min
May 23, 5:55 PM CDT	Tornado Warning	TSA	Osage, Pawnee	50 min
May 23, 6:47 PM CDT	Areal Flood Advisory	TSA	Washington	118 min
May 23, 6:59 PM CDT	Special Weather Statement	TSA	Delaware, Mayes, Wagoner	46 min
May 22, 7:52 PM CDT	Severe Thunderstorm Warning	TSA	Benton, Carroll, Madison	38 min
May 22, 8:30 PM CDT	Severe Thunderstorm Warning	TSA	Benton, Carroll, Madison	60 min

Nearby

Special Weather Statements in Arkansas, 2011 Every special weather statement 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.