Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 95, NWS Tulsa, OK

May 20, 20134 counties in Oklahoma; Crawford County, Sebastian County, Washington County, Arkansas

NWS Tulsa, OK issued this severe thunderstorm warning at May 20, 2013, 7:23 PM CDT for 4 counties in Oklahoma; Crawford County, Sebastian County, Washington County, Arkansas. It was in force for 67 min. 1 report 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 20, 2013, 7:23 PM CDT (00:23 UTC)
Expired: May 20, 2013, 8:30 PM CDT
In force: 67 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon

Counties Crawford County, AR, Sebastian County, AR, Washington County, AR, Adair County, OK, Haskell County, OK, LeFlore County, OK, Sequoyah County, OK

The radar

The Western Arkansas radar (KSRX), 30 km from the middle of the area, began a volume at 00:25 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

Time	Report	Where	Remark
May 20, 8:00 PM CDT	TSTM WND DMG	Natural Dam, AR	TREE DOWN

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

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this severe thunderstorm warning; the first came 37 minutes after it went out.

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 20, 1:10 PM CDT	Tornado Watch	SPC	9 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 0.4 hours before the alert went out and 158 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: 2135 J/kg
Mixed-layer CIN: -10 J/kg
Mixed-layer LCL: 780 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 236 m²/s²
0-3 km storm-relative helicity: 265 m²/s²
Significant tornado parameter: 3.2
Supercell composite: 13.9

Open this sounding in Storm Lab

The text

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

151 
WUUS54 KTSA 210023
SVRTSA
ARC033-131-143-OKC001-061-079-135-210130-
/O.NEW.KTSA.SV.W.0095.130521T0023Z-130521T0130Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
723 PM CDT MON MAY 20 2013

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SEQUOYAH COUNTY IN EAST CENTRAL OKLAHOMA...
  SOUTHERN ADAIR COUNTY IN NORTHEAST OKLAHOMA...
  CRAWFORD COUNTY IN NORTHWEST ARKANSAS...
  SOUTHERN WASHINGTON COUNTY IN NORTHWEST ARKANSAS...
  NORTHEASTERN HASKELL COUNTY IN SOUTHEAST OKLAHOMA...
  NORTHWESTERN LE FLORE COUNTY IN SOUTHEAST OKLAHOMA...
  NORTHERN SEBASTIAN COUNTY IN WEST CENTRAL ARKANSAS...

* UNTIL 830 PM CDT

* AT 721 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 5 MILES WEST OF
  SALLISAW...MOVING EAST AT 45 MPH.

  STORM HAZARDS INCLUDE...
  QUARTER SIZE HAIL...
  DAMAGING WIND GUSTS TO 70 MPH...

* SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
  SALLISAW...BRUSHY LAKE STATE PARK...MARBLE CITY...GANS...BRUSHY...
  MULDROW...ROLAND...MOFFETT...SHORT...FORT SMITH...VAN BUREN...
  FIGURE FIVE...CEDARVILLE...NATURAL DAM...LEE CREEK...RUDY...ALMA...
  DYER...DEVILS DEN STATE PARK...MOUNTAINBURG...CHESTER...
  BLACKBURN...LAKE FORT SMITH AND MULBERRY.

THIS INCLUDES INTERSTATE 40 IN OKLAHOMA BETWEEN MILE MARKERS 295 AND
328.

THIS INCLUDES INTERSTATE 40 IN ARKANSAS BETWEEN MILE MARKERS 0 AND
23.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH IS IN EFFECT FOR THE WARNED AREA. PEOPLE OUTDOORS
SHOULD MOVE INSIDE A STURDY BUILDING. STAY AWAY FROM WINDOWS AND
DOORS UNTIL THE STORM HAS PASSED.

&&

LAT...LON 3547 9405 3546 9403 3544 9408 3529 9491
      3560 9504 3564 9489 3564 9481 3567 9481
      3585 9416 3561 9407 3558 9407 3558 9406
      3551 9403
TIME...MOT...LOC 0024Z 251DEG 38KT 3548 9483

$$

2 follow-up statements

001 
WWUS54 KTSA 210045
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
745 PM CDT MON MAY 20 2013

OKC061-079-210056-
/O.CAN.KTSA.SV.W.0095.000000T0000Z-130521T0130Z/
HASKELL OK-LE FLORE OK-
745 PM CDT MON MAY 20 2013

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN LE FLORE AND
NORTHEASTERN HASKELL COUNTIES IS CANCELLED...

LAT...LON 3544 9408 3535 9472 3564 9481 3567 9481
      3585 9416 3561 9407 3558 9407 3557 9406
      3551 9403 3547 9405 3546 9403
TIME...MOT...LOC 0046Z 251DEG 38KT 3552 9455

$$

ARC033-131-143-OKC001-135-210130-
/O.CON.KTSA.SV.W.0095.000000T0000Z-130521T0130Z/
CRAWFORD AR-SEBASTIAN AR-WASHINGTON AR-SEQUOYAH OK-ADAIR OK-
745 PM CDT MON MAY 20 2013

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 PM CDT FOR
SOUTHERN ADAIR...EASTERN SEQUOYAH...SOUTHWESTERN WASHINGTON...
NORTHERN SEBASTIAN AND CRAWFORD COUNTIES...

AT 741 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 7 MILES NORTH OF
MULDROW...MOVING EAST AT 45 MPH.

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

SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...MOFFETT...
SHORT...DORA...UNIONTOWN...VAN BUREN...FIGURE FIVE...CEDARVILLE...
NATURAL DAM...SHIBLEY...FURRY...ODELL...LEE CREEK...CONCORD...
KIBLER...RUDY...ALMA...DYER...DEVILS DEN STATE PARK...MOUNTAINBURG...
CHESTER...BLACKBURN...LAKE FORT SMITH...MULBERRY AND PLEASANT HILL.

THIS INCLUDES INTERSTATE 40 IN OKLAHOMA BETWEEN MILE MARKERS 309 AND
328.

THIS INCLUDES INTERSTATE 40 IN ARKANSAS BETWEEN MILE MARKERS 0 AND
23.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH IS IN EFFECT FOR THE WARNED AREA. PEOPLE OUTDOORS
SHOULD MOVE INSIDE A STURDY BUILDING. STAY AWAY FROM WINDOWS AND
DOORS UNTIL THE STORM HAS PASSED.

&&

LAT...LON 3544 9408 3535 9472 3564 9481 3567 9481
      3585 9416 3561 9407 3558 9407 3557 9406
      3551 9403 3547 9405 3546 9403
TIME...MOT...LOC 0046Z 251DEG 38KT 3552 9455

$$

214 
WWUS54 KTSA 210103
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
803 PM CDT MON MAY 20 2013

ARC033-131-143-OKC001-135-210130-
/O.CON.KTSA.SV.W.0095.000000T0000Z-130521T0130Z/
CRAWFORD AR-SEBASTIAN AR-WASHINGTON AR-SEQUOYAH OK-ADAIR OK-
803 PM CDT MON MAY 20 2013

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 PM CDT FOR
SOUTHEASTERN ADAIR...NORTHEASTERN SEQUOYAH...SOUTHWESTERN
WASHINGTON...NORTHERN SEBASTIAN AND CRAWFORD COUNTIES...

AT 801 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR CEDARVILLE...
MOVING EAST AT 45 MPH.

STORM HAZARDS INCLUDE...
WIND GUSTS TO 60 MPH...

SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...LEE
CREEK...CONCORD...KIBLER...RUDY...ALMA...DYER...DEVILS DEN STATE
PARK...MOUNTAINBURG...CHESTER...BLACKBURN...LAKE FORT SMITH...
MULBERRY AND PLEASANT HILL.

THIS INCLUDES INTERSTATE 40 IN ARKANSAS BETWEEN MILE MARKERS 0 AND
23.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH IS IN EFFECT FOR THE WARNED AREA. PEOPLE OUTDOORS
SHOULD MOVE INSIDE A STURDY BUILDING. STAY AWAY FROM WINDOWS AND
DOORS UNTIL THE STORM HAS PASSED.

PEOPLE OUTDOORS SHOULD MOVE INSIDE A STURDY BUILDING. STAY AWAY FROM
WINDOWS AND DOORS UNTIL THE STORM HAS PASSED.

&&

LAT...LON 3550 9405 3549 9404 3547 9405 3546 9404
      3544 9408 3538 9450 3574 9455 3585 9416
      3561 9407 3558 9407 3551 9403
TIME...MOT...LOC 0104Z 251DEG 38KT 3559 9435

$$

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 20, 7:20 PM CDT, 3 minutes earlier.

Area forecast discussion, May 20, 7:20 PM CDT, 3 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
720 PM CDT MON MAY 20 2013

.DISCUSSION...

THE 00Z TAF DISCUSSION IS INCLUDED BELOW.

&&

.AVIATION...
CONCERNING TAF SITES KTUL/KRVS/KBVO/KMLC/KXNA/KFYV/KFSM.
THUNDERSTORMS WILL BE THE MAIN AVIATION CONCERN THRU MUCH OF THE
PERIOD...WITH LOW CIGS THEN BECOMING A CONCERN DURING THE MORNING
ON TUESDAY. THUNDERSTORM CONCERN WILL SHIFT SOUTHEAST TOWARD KFSM
ON TUESDAY AFTERNOON AS THE WEAK COLD FRONT SLOWLY SLIDES IN THAT
DIRECTION. CIGS/VSBYS WILL BE REDUCED DOWN TO AS LOW AS IFR IN ANY
TSRA THAT AFFECTS AIRPORTS DIRECTLY. MORNING CIGS SHOULD BE IN THE
MVFR RANGE AS WELL.

LACY

&&

.PREV DISCUSSION... /ISSUED 330 PM CDT MON MAY 20 2013/

DISCUSSION...
AND HERE WE GO AGAIN...SEVERE STORMS EXPLODING ALONG FRONT
SITUATED FROM OSAGE COUNTY TO WEST OF OKC METRO WITH INTERSECTING
DRY LINE OVER FAR SW OK. STORMS SOUTHWEST OF OKC RAPIDLY BECAME
TORNADIC SUPERCELLS AND THREAT OF THAT EXTENDS OVER MOST OF
EASTERN OK THIS AFTERNOON AND EVENING. STORMS HAVE ALSO BEGUN TO
FORM OVER OSAGE/PAWNEE AND WILL CONTINUE TO INTENSIFY. SEVERE
WEATHER COVERAGE WILL BE MUCH MORE WIDESPREAD WITH THIS ROUND AND
ALL MODES AGAIN POSSIBLE.

CONCERN LATER TONIGHT TURNS TO FLASH FLOODING POTENTIAL AS STORMS
SPREAD EAST AND LIKELY INCREASE IN COVERAGE THROUGH THE EVENING
AIDED BY STRONG MOISTURE TRANSPORT AND LOW LEVEL JET. MODELS HAVE
REMAINED FAIRLY CONSISTENT IN TARGETING AN AREA FROM CENTRAL OK
THROUGH NORTHWEST AR WITH THE HEAVIEST SWATH OF PRECIP...THOUGH
WITH SOME OBVIOUS DIFFERENCES IN PLACEMENT OF HIGHEST QPF. ENOUGH
CONSENSUS EXISTS WITH SHIFTING THE HEAVY RAIN THREAT SOUTH OF I-44
BY TUESDAY THAT FLASH FLOOD WATCH WILL BE CARRIED ONLY FOR
TONIGHT. AREAS TO THE SOUTH WILL LIKELY SEE SOME DEGREE OF THREAT
CONTINUING AT LEAST INTO TUESDAY MORNING.

A POTENTIAL ISSUE HERE IS A STRONG PIECE OF SHORTWAVE ENERGY THAT
WILL ROTATE AROUND THE TROUGH AND INTO TX/OK TUESDAY AFTERNOON.
THIS MAY SERVE TO ENHANCE THUNDERSTORM COVERAGE NORTH OF THE FRONT
AND CONTINUE THE HEAVY RAIN POTENTIAL MUCH OF THE DAY IN THE SAME
GENERAL AREA THAT WILL BE TARGETED TONIGHT. GFS IS THE AGGRESSIVE
MODEL IN THIS SOLUTION BUT DOES HAVE SOME SUPPORT FROM THE 12Z
ECMWF AND CANADIAN. GIVEN THE NATURE OF THE AIRMASS...SEVERAL
INCHES OF RAIN APPEAR LIKELY BEFORE ALL IS SAID AND DONE. SEVERE
WEATHER POTENTIAL WILL BE FOCUSED MORE OVER SE OKLAHOMA TUESDAY
AFTERNOON...THE MOST SIGNIFICANT LIKELY JUST TO OUR SOUTHEAST.

BOUNDARY SHOULD PUSH FAR ENOUGH SOUTH TO PUSH ANY THUNDERSTORMS
SOUTH OF THE AREA WEDNESDAY WITH POTENTIAL FOR BOUNDARY TO RETURN
NORTH THURSDAY/FRIDAY. PATTERN LOOKS EARLY SUMMER LIKE AND WITH
RIDGE AXIS MAINLY TO OUR WEST...COULD SEE SOME OVERNIGHT MCS
ACTIVITY LATE IN THE WEEK.

&&

.PRELIMINARY POINT TEMPS/POPS...
TUL   64  76  57  82 /  80  60  10  10
FSM   70  77  60  84 /  80  90  70  10
MLC   70  76  56  85 /  80  80  20  10
BVO   60  77  50  80 /  70  40  10  10
FYV   65  74  53  78 /  90  80  60  10
BYV   64  75  56  79 /  90  90  70  10
MKO   67  76  56  82 /  90  80  20  10
MIO   63  76  54  80 /  80  70  30  10
F10   68  76  57  82 /  90  60  10  10
HHW   70  81  63  86 /  70  80  70  10

&&

.TSA WATCHES/WARNINGS/ADVISORIES...
OK...FLASH FLOOD WATCH UNTIL 7 PM TUESDAY FOR OKZ058-OKZ062-OKZ063-
     OKZ065-OKZ066-OKZ067-OKZ068-OKZ069-OKZ070-OKZ071-OKZ072-
     OKZ073-OKZ074-OKZ075-OKZ076.

     FLASH FLOOD WATCH UNTIL 7 AM TUESDAY FOR OKZ054-OKZ055-OKZ056-
     OKZ057-OKZ059-OKZ060-OKZ061-OKZ064.

AR...FLASH FLOOD WATCH UNTIL 7 PM TUESDAY FOR ARZ001-ARZ002-ARZ010-
     ARZ011-ARZ019-ARZ020-ARZ029.

&&

AVIATION...30

Hazardous weather outlook, May 20, 5:06 PM CDT, 2 hours 17 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TULSA OK
506 PM CDT MON MAY 20 2013

ARZ001-002-010-011-019-020-029-OKZ049-053>076-211000-
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-
506 PM CDT MON MAY 20 2013

...SIGNIFICANT SEVERE WEATHER ONGOING...RISK FOR ALL MODES OF
SEVERE INCLUDING VERY LARGE HAIL AND LONG TRACK TORNADOES WILL
CONTINUE INTO THE 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...SIGNIFICANT.
	AREA...EASTERN OKLAHOMA AND NORTHWEST ARKANSAS
	ONSET...ONGOING.

 	AREA AT GREATEST RISK...NORTHEAST OKLAHOMA.

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

AREA AT GREATEST RISK...EASTERN OKLAHOMA .

FLASH FLOOD.
	RISK...ELEVATED.
	AREA...NORTHEAST OKLAHOMA INTO NORTHWEST ARKANSAS.
        ONSET...THIS EVENING.

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

        AREA AT GREATEST RISK...NORTH OF I-40.

DISCUSSION...
SIGNIFICANT SEVERE WEATHER EVENT UNDERWAY LATE THIS AFTERNOON. THE
BULK OF THE ACTIVITY CURRENTLY RESIDES NORTHWEST OF THE INTERSTATE
44 CORRIDOR. AREAL COVERAGE OF STORMS WILL MOVE TO THE EAST THIS
EVENING AND OVERNIGHT...AND THROUGH THE EVENING SUPERCELLS WILL
REMAIN LIKELY...ESPECIALLY ACROSS NORTHEAST OKLAHOMA...AND WILL
CARRY A A HIGH RISK OF LONG TRACK TORNADOES...BASEBALL SIZE HAIL
AND AND WIND GUSTS TO 80 MPH.

ADDITIONALLY...HIGH MOISTURE CONTENT AND SLOWER MOVEMENT OF STORMS WILL
POSE A HEAVY RAIN AND FLASH FLOODING RISK TONIGHT OVER PORTIONS OF
EASTERN OKLAHOMA AND NORTHWEST ARKANSAS. THE GREATEST THREAT
TONIGHT WILL BE NORTH OF INTERSTATE 40. 2 TO 4 INCHES OF RAIN IN
THESE AREAS MAY BE COMMON. POTENTIAL FOR LOCALIZED 7 INCH AMOUNTS
WILL QUICKLY HEIGHTEN THE RISK OF LIFE THREATENING FLASH
FLOODING.

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

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.
TUESDAY...SEVERE THUNDERSTORM POTENTIAL...HEAVY RAIN POTENTIAL.
WEDNESDAY...NO HAZARDS.
THURSDAY THROUGH SATURDAY...THUNDERSTORM POTENTIAL.
SUNDAY...NO HAZARDS.

EXTENDED DISCUSSION...
THE SEVERE WEATHER RISK TUESDAY AND TUESDAY NIGHT IS EXPECTED TO
SHIFT ACROSS SOUTHEAST OKLAHOMA AND WEST CENTRAL ARKANSAS...AND WILL
AGAIN INCLUDE THE THREAT FOR FLOODING. AFTER A BRIEF BREAK ON
WEDNESDAY...LOW THUNDERSTORM CHANCES RETURN THURSDAY THROUGH
SATURDAY.

EMERGENCY MANAGEMENT PLANNING STATEMENT...
PERSONS ACROSS SOUTHEAST OKLAHOMA AND WEST CENTRAL ARKANSAS WILL
LIKELY SEE AN INCREASED RISK FOR SEVERE STORMS TUESDAY AND TUESDAY
NIGHT...AS MOST OF THE WEATHER HAS REMAINED WEST OF THOSE
LOCATIONS THE PAST FEW DAYS.

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

In the hours before

Local storm report, May 20, 5:52 PM CDT, 1 hour 31 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
552 PM CDT MON MAY 20 2013

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

0552 PM     HAIL             WAINWRIGHT              35.61N 95.56W
05/20/2013  E1.00 INCH       MUSKOGEE           OK   EMERGENCY MNGR

&&

KAH

Local storm report, May 20, 6:06 PM CDT, 1 hour 17 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
606 PM CDT MON MAY 20 2013

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

0600 PM     TSTM WND GST     7 E CENTRAILIA          36.80N 95.21W
05/20/2013  M66 MPH          CRAIG              OK   MESONET

            MEASURED 66 MPH WIND GUST AT THE VINITA MESONET.

&&

JDS

Local storm report, May 20, 6:55 PM CDT, 28 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
655 PM CDT MON MAY 20 2013

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

0630 PM     TORNADO          8 S QUAPAW              36.84N 94.79W
05/20/2013                   OTTAWA             OK   TRAINED SPOTTER

            DAMAGE TO A DIESEL SHOP. NUMEROUS POWER POLES SNAPPED.
            SEMI TRAILERS BLOWN OFF THE ROAD. 50 TO 60 FOOT TREE ALSO
            BLOCKING A ROADWAY 3 MILES EAST OF TWIN BRIDGES LIKELY
            FROM THE SAME TORNADO.

&&

KAH

Local storm report, May 20, 7:14 PM CDT, 9 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
714 PM CDT MON MAY 20 2013

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

0712 PM     TSTM WND GST     BENTONVILLE             36.37N 94.21W
05/20/2013  E65 MPH          BENTON             AR   LAW ENFORCEMENT

&&

JDS

Local storm report, May 20, 7:18 PM CDT, 5 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
718 PM CDT MON MAY 20 2013

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

0717 PM     TSTM WND GST     SPRINGDALE              36.19N 94.13W
05/20/2013  E70 MPH          WASHINGTON         AR   TRAINED SPOTTER

&&

JDS

Local storm report, May 20, 7:22 PM CDT, 1 minute before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
722 PM CDT MON MAY 20 2013

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

0715 PM     TSTM WND GST     2 S BENTONVILLE         36.34N 94.21W
05/20/2013  M61 MPH          BENTON             AR   AWOS

            MEASURED 61 MPH GUST AT THE BENTONVILLE MUNICIPAL AIRPORT

&&

JDS

The office that day

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

Issued	Product	Office	Counties	Lasted
May 20, 7:04 PM CDT	Tornado Warning	TSA	Latimer, Pittsburg, Pushmataha	41 min
May 20, 7:31 PM CDT	Tornado Warning	TSA	Sequoyah	44 min
May 20, 7:50 PM CDT	Severe Thunderstorm Warning	TSA	Haskell, Latimer, LeFlore, Pittsburg, Pushmataha, Sequoyah	70 min
May 20, 7:57 PM CDT	Severe Thunderstorm Warning	TSA	Sequoyah	63 min
May 20, 8:02 PM CDT	Severe Thunderstorm Warning	TSA	Haskell, LeFlore, Sequoyah	58 min
May 20, 8:07 PM CDT	Severe Thunderstorm Warning	TSA	Choctaw, Latimer, Pittsburg, Pushmataha	68 min
May 20, 8:18 PM CDT	Severe Thunderstorm Warning	TSA	LeFlore, Sequoyah	57 min
May 20, 8:21 PM CDT	High Wind Warning	TSA	McIntosh, Muskogee, Pittsburg	4 hr
May 20, 8:30 PM CDT	Tornado Warning	TSA	Haskell, Latimer, LeFlore, Sequoyah	60 min
May 20, 8:34 PM CDT	River Flood Warning	TSA	Ottawa	61 hr
May 20, 8:52 PM CDT	Tornado Warning	TSA	Haskell, LeFlore, Sequoyah	38 min
May 20, 8:57 PM CDT	Severe Thunderstorm Warning	TSA	Choctaw, Latimer, LeFlore, Pushmataha	63 min
May 20, 10:13 PM CDT	Tornado Warning	TSA	Choctaw, Pushmataha	47 min
May 20, 10:25 PM CDT	Special Weather Statement	TSA	Rogers	35 min
May 20, 10:55 PM CDT	Special Weather Statement	TSA	Rogers	35 min
May 20, 11:12 PM CDT	Areal Flood Advisory	TSA	Rogers, Tulsa	2 hr
May 20, 11:15 PM CDT	Severe Thunderstorm Warning	TSA	Rogers, Tulsa	45 min
May 20, 11:36 PM CDT	Special Weather Statement	TSA	Pittsburg	24 min
May 20, 11:50 PM CDT	Severe Thunderstorm Warning	TSA	Pittsburg	25 min
May 20, 11:56 PM CDT	Severe Thunderstorm Warning	TSA	LeFlore	34 min
May 21, 12:14 AM CDT	Special Weather Statement	TSA	Pittsburg	31 min
May 21, 12:45 AM CDT	Special Weather Statement	TSA	Pittsburg	30 min
May 21, 1:12 AM CDT	Special Weather Statement	TSA	Pittsburg	33 min
May 21, 1:23 AM CDT	Special Weather Statement	TSA	Pittsburg	37 min
May 21, 1:32 AM CDT	Severe Thunderstorm Warning	TSA	Pittsburg	43 min
May 21, 1:35 AM CDT	Severe Thunderstorm Warning	TSA	Haskell, Latimer, Pittsburg	40 min
May 21, 2:11 AM CDT	Areal Flood Advisory	TSA	Pittsburg	2 hr
May 21, 2:17 AM CDT	Special Weather Statement	TSA	LeFlore	28 min
May 21, 2:23 AM CDT	Special Weather Statement	TSA	Latimer, LeFlore	52 min
May 21, 2:45 AM CDT	Special Weather Statement	TSA	LeFlore	45 min
May 21, 6:44 AM CDT	Flash Flood Warning	TSA	Haskell, Latimer, LeFlore, McIntosh, Muskogee, Pittsburg and 1 more	6 hr
May 21, 8:55 AM CDT	Flash Flood Warning	TSA	Latimer, LeFlore, Pittsburg, Pushmataha	4 hr
May 21, 9:30 AM CDT	Special Weather Statement	TSA	Mayes, Muskogee, Rogers, Wagoner	60 min
May 21, 10:32 AM CDT	Special Weather Statement	TSA	Adair, Cherokee, Delaware, Haskell, Sequoyah	58 min
May 21, 10:33 AM CDT	Special Weather Statement	TSA	Adair, Cherokee, Delaware, Haskell, Sequoyah	57 min
May 21, 12:15 PM CDT	Flash Flood Warning	TSA	Haskell, Latimer, LeFlore, McIntosh, Muskogee, Pittsburg and 1 more	6 hr
May 21, 12:19 PM CDT	Flash Flood Warning	TSA	Latimer, LeFlore, Pittsburg, Pushmataha	6 hr
May 21, 12:57 PM CDT	Special Weather Statement	TSA	Creek, McIntosh, Okfuskee, Okmulgee	48 min
May 21, 1:22 PM CDT	Severe Thunderstorm Warning	TSA	McIntosh, Okfuskee, Okmulgee, Pittsburg	38 min
May 21, 1:58 PM CDT	Severe Thunderstorm Warning	TSA	Choctaw, Haskell, Latimer, McIntosh, Pittsburg, Pushmataha	62 min
May 21, 2:01 PM CDT	River Flood Warning	TSA	Pushmataha	40 hr
May 21, 2:30 PM CDT	River Flood Warning	TSA	LeFlore	43 hr
May 21, 2:58 PM CDT	Special Weather Statement	TSA	Choctaw, Haskell, Latimer, LeFlore, Pushmataha	62 min
May 21, 3:20 PM CDT	Severe Thunderstorm Warning	TSA	Choctaw, Pushmataha	25 min
May 21, 5:51 PM CDT	Areal Flood Warning	TSA	Haskell, Latimer, LeFlore, McIntosh, Muskogee, Pittsburg and 2 more	24 hr
May 20, 7:00 PM CDT	Severe Thunderstorm Warning	TSA	Benton, Carroll	60 min
May 20, 7:04 PM CDT	Tornado Warning	TSA	Benton, Madison, Washington	41 min
May 20, 7:25 PM CDT	Tornado Warning	TSA	Benton, Carroll, Madison	50 min
May 20, 7:41 PM CDT	Severe Thunderstorm Warning	TSA	Carroll, Madison, Washington	64 min
May 20, 8:42 PM CDT	Severe Thunderstorm Warning	TSA	Carroll, Madison	48 min
May 20, 9:05 PM CDT	Tornado Warning	TSA	Crawford, Sebastian	40 min
May 20, 9:20 PM CDT	Tornado Warning	TSA	Crawford, Franklin, Sebastian	40 min
May 20, 9:21 PM CDT	Special Weather Statement	TSA	Franklin	24 min
May 20, 9:24 PM CDT	Severe Thunderstorm Warning	TSA	Crawford, Franklin, Madison	66 min
May 20, 9:38 PM CDT	Severe Thunderstorm Warning	TSA	Crawford, Franklin	37 min
May 20, 9:43 PM CDT	Tornado Warning	TSA	Franklin	47 min
May 20, 10:11 PM CDT	Areal Flood Advisory	TSA	Franklin, Madison	2 hr
May 21, 9:01 AM CDT	Special Weather Statement	TSA	Sebastian	44 min
May 21, 3:56 PM CDT	Special Weather Statement	TSA	Franklin, Sebastian	49 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2013 Severe Thunderstorm Warnings in Arkansas, 2013 Every severe thunderstorm warning in 2013

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.