Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 200, NWS Tulsa, OK

July 11, 2013Choctaw County, Pushmataha County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Jul 11, 2013, 3:35 PM CDT for Choctaw County, Pushmataha County, Oklahoma. It was in force for 55 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: Jul 11, 2013, 3:35 PM CDT (20:35 UTC)
Expired: Jul 11, 2013, 4:30 PM CDT
In force: 55 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon

Counties Choctaw County, OK, Pushmataha County, OK

The radar

The Western Arkansas radar (KSRX), 172 km from the middle of the area, began a volume at 20:38 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 nearest sounding before it

Shreveport, LA (KSHV), launched 12:00Z, 8.6 hours before the alert went out and 217 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: 1937 J/kg
Mixed-layer CIN: -60 J/kg
Mixed-layer LCL: 867 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 57 m²/s²
0-3 km storm-relative helicity: 95 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.8

Open this sounding in Storm Lab

The text

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

135 
WUUS54 KTSA 112035
SVRTSA
OKC023-127-112130-
/O.NEW.KTSA.SV.W.0200.130711T2035Z-130711T2130Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
335 PM CDT THU JUL 11 2013

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN CHOCTAW COUNTY IN SOUTHEAST OKLAHOMA...
  SOUTHERN PUSHMATAHA COUNTY IN SOUTHEAST OKLAHOMA...

* UNTIL 430 PM CDT

* AT 333 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 11 MILES
  NORTHEAST OF FORT TOWSON...MOVING SOUTHWEST AT 10 MPH.

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

* SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...FORT
  TOWSON...RAYMOND GARY STATE PARK AND SAWYER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3388 9549 3421 9527 3422 9514 3394 9515
      3393 9517 3395 9522 3393 9524 3389 9525
      3389 9527 3387 9529 3388 9533 3387 9534
      3386 9542
TIME...MOT...LOC 2036Z 029DEG 11KT 3413 9515

$$

2 follow-up statements

503 
WWUS54 KTSA 112052
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
352 PM CDT THU JUL 11 2013

OKC127-112102-
/O.CAN.KTSA.SV.W.0200.000000T0000Z-130711T2130Z/
PUSHMATAHA OK-
352 PM CDT THU JUL 11 2013

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN PUSHMATAHA COUNTY IS
CANCELLED...

LAT...LON 3388 9549 3416 9529 3416 9515 3394 9515
      3393 9517 3395 9522 3393 9524 3389 9525
      3389 9527 3387 9529 3388 9533 3387 9534
      3386 9542
TIME...MOT...LOC 2052Z 038DEG 10KT 3411 9520

$$

OKC023-112130-
/O.CON.KTSA.SV.W.0200.000000T0000Z-130711T2130Z/
CHOCTAW OK-
352 PM CDT THU JUL 11 2013

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM CDT FOR
EASTERN CHOCTAW COUNTY...

AT 350 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 6 MILES NORTH OF
SWINK...MOVING SOUTHWEST AT 10 MPH.

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

SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...SWINK...
FORT TOWSON...RAYMOND GARY STATE PARK...HUSKEY...SAWYER AND
FROGVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3388 9549 3416 9529 3416 9515 3394 9515
      3393 9517 3395 9522 3393 9524 3389 9525
      3389 9527 3387 9529 3388 9533 3387 9534
      3386 9542
TIME...MOT...LOC 2052Z 038DEG 10KT 3411 9520

$$

699 
WWUS54 KTSA 112120
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
420 PM CDT THU JUL 11 2013

OKC023-112130-
/O.EXP.KTSA.SV.W.0200.000000T0000Z-130711T2130Z/
CHOCTAW OK-
420 PM CDT THU JUL 11 2013

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN CHOCTAW COUNTY EXPIRES
AT 430 PM CDT...

LAT...LON 3388 9549 3416 9529 3416 9515 3394 9515
      3393 9517 3395 9522 3393 9524 3389 9525
      3389 9527 3387 9529 3388 9533 3387 9534
      3386 9542
TIME...MOT...LOC 2120Z 038DEG 10KT 3405 9526

$$

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 Jul 11, 3:22 PM CDT, 13 minutes earlier.

Area forecast discussion, Jul 11, 3:22 PM CDT, 13 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
322 PM CDT THU JUL 11 2013

.DISCUSSION...
FRONTAL BOUNDARY THAT CURRENTLY IS NEAR THE RED RIVER
HAS ONLY HAD A MINIMAL IMPACT ON AREA TEMPERATURES TODAY.
HOWEVER...SOME DRIER AIR IS TRYING TO SNEAK INTO THE
AREA FROM THE NORTHEAST. THE THREAT FOR ISOLATED THUNDERSTORMS
IS EXPECTED TO CONTINUE THROUGH THE EARLY EVENING HOURS BEFORE
THE ACTIVITY DISSIPATES. LIKE YESTERDAY...ANY OF THE THUNDERSTORMS
WILL HAVE THE POTENTIAL TO PRODUCE DAMAGING DOWNBURST WINDS.

TEMPERATURES ON FRIDAY ARE EXPECTED TO BE A DEGREE OR SO COOLER
THAN TODAY WITH SLIGHTLY DRIER AIR IN PLACE AS WELL. THIS WILL
KEEP HEAT INDEX VALUES A LITTLE COOLER. WILL STILL HAVE TO CONTINUE
A HEAT ADVISORY FOR PORTIONS OF EASTERN OKLAHOMA THROUGH FRIDAY
AFTERNOON.

INTERESTING WEATHER CHANGES ARE ON TAP FOR THE WEEKEND AS A MID-LEVEL
LOW CURRENTLY OVER SOUTHERN MICHIGAN WILL MOVE CLOCKWISE AROUND A
MID-LEVEL RIDGE AS IT MOVES INTO THE PLAINS. THIS LOW IS SET TO MOVE
FROM EAST TO WEST ACROSS THE AREA SATURDAY NIGHT INTO SUNDAY. THIS
LOW WILL HELP DROP TEMPERATURES TO AT OR BELOW NORMAL LEVELS AS WE MOVE
LATE INTO THE WEEKEND AND INTO EARLY NEXT WEEK. HAVE HELD POPS OFF
UNTIL SUNDAY NIGHT BUT MAY NEED TO INTRODUCE SOME EARLIER IN THE WEEKEND.
THE MID-LEVEL RIDGE WILL SLOWLY BUILD BACK INTO THE AREA FROM EAST
DURING THE MIDDLE OF NEXT WEEK AS THE LOW DEPARTS TO THE WEST AND WEAKENS.

&&

.PRELIMINARY POINT TEMPS/POPS...
TUL   74  97  72  95 /  20  10   0  10
FSM   72  95  68  94 /  20  10   0  10
MLC   74  98  68  95 /  20  10   0  10
BVO   69  97  68  96 /  20  10   0  10
FYV   66  90  60  90 /  20  10   0  10
BYV   65  89  61  88 /  10  10   0  10
MKO   73  96  68  94 /  20  10   0  10
MIO   69  94  67  93 /  10  10   0  10
F10   75  97  70  94 /  20  10   0  10
HHW   74  98  69  94 /  20  10   0  10

&&

.TSA WATCHES/WARNINGS/ADVISORIES...
OK...HEAT ADVISORY UNTIL 7 PM THURSDAY FOR OKZ049-OKZ053-OKZ067-
     OKZ070-OKZ072-OKZ074-OKZ075-OKZ076.

     HEAT ADVISORY UNTIL 7 PM FRIDAY FOR OKZ060-OKZ064-OKZ065-OKZ066-
     OKZ071-OKZ073.

AR...HEAT ADVISORY UNTIL 7 PM THURSDAY FOR ARZ019-ARZ029.

&&

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

Hazardous weather outlook, Jul 11, 1:07 PM CDT, 2 hours 28 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TULSA OK
107 PM CDT THU JUL 11 2013

ARZ001-002-010-011-019-020-029-OKZ049-053>076-121000-
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-
107 PM CDT THU JUL 11 2013

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

.DAY ONE...THIS AFTERNOON AND TONIGHT.

SEVERE THUNDERSTORM.
	RISK...LIMITED.
	AREA...ALL BUT FAR NORTHEAST OKLAHOMA AND NORTHWEST ARKANSAS.
	ONSET...MID TO LATE AFTERNOON.

DANGEROUS HEAT.
	RISK...ELEVATED.
	AREA...GENERALLY ALONG AND SOUTH OF AN OWASSO TO VAN BUREN LINE.
	ONSET...ONGOING.

DISCUSSION...
A WEAK FRONTAL BOUNDARY REMAINS IN THE VICINITY TODAY AND THIS
WILL ONCE AGAIN RESULT IN ISOLATED THUNDERSTORM DEVELOPMENT THIS
AFTERNOON. DAMAGING WINDS WILL BE POSSIBLE WITH ANY STORM THAT
DOES DEVELOP.

AFTERNOON HEAT INDEX VALUES WILL CLIMB TO NEAR OR JUST ABOVE 105
THIS AFTERNOON ALONG AND SOUTH OF THE ARKANSAS RIVER VALLEY.

SPOTTER AND EMERGENCY MANAGEMENT ACTION STATEMENT...
LOCAL SPOTTER ACTIVATION MAY BE NEEDED.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.
FRIDAY...DANGEROUS HEAT POTENTIAL.
SATURDAY...NO HAZARDS.
SUNDAY THROUGH TUESDAY...THUNDERSTORM POTENTIAL.
WEDNESDAY...NO HAZARDS.

EXTENDED DISCUSSION...
TEMPERATURES WILL COOL OVER THE WEEKEND AS UPPER LEVEL LOW
PRESSURE CURRENTLY OVER THE EASTERN U.S. RETROGRADES WEST OF THE
MISSISSIPPI RIVER. THIS MOVEMENT WILL BRING INCREASING CHANCES FOR
THUNDERSTORMS BY EARLY NEXT WEEK.

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

In the hours before

Local storm report, Jul 11, 10:45 AM CDT, 4 hours 50 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
1045 AM CDT THU JUL 11 2013

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

0430 PM     TSTM WND DMG     7 W OKEMAH              35.43N 96.43W
07/10/2013                   OKFUSKEE           OK   TRAINED SPOTTER

            GREENHOUSE LEVELED AND NUMEROUS TREES DOWNED AT THE SWEET
            HILLTOP FARM AND NURSERY ON THE OKFUSKEE AND SEMINOLE
            COUNTY LINE. TIME ESTIMATED.

&&

KAH

Special weather statement, Jul 11, 2:53 PM CDT, 42 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
253 PM CDT THU JUL 11 2013

ARZ019-OKZ072-112030-
CRAWFORD AR-SEQUOYAH OK-
253 PM CDT THU JUL 11 2013

...SIGNIFICANT WEATHER ADVISORY...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 330 PM CDT
FOR THE FOLLOWING COUNTIES...

IN NORTHWEST ARKANSAS
     WESTERN CRAWFORD

IN EAST CENTRAL OKLAHOMA
     EASTERN SEQUOYAH

AT 254 PM CDT...A STRONG THUNDERSTORM WAS LOCATED 2 MILES SOUTH OF
SHORT...MOVING SOUTHWEST AT 10 MPH. SOME LOCATIONS THAT WILL BE
AFFECTED BY THIS STORM INCLUDE...COTTONWOOD...MULDROW...ROLAND...
SHORT...UNIONTOWN...FIGURE FIVE AND DORA.

THIS STORM WILL BE CAPABLE OF PRODUCING NICKEL SIZE HAIL AND WIND
GUSTS TO 50 MPH.

LAT...LON 3552 9433 3532 9459 3550 9476 3562 9454
      3564 9450 3564 9448 3566 9447
TIME...MOT...LOC 1954Z 051DEG 10KT 3553 9449

Special weather statement, Jul 11, 2:55 PM CDT, 40 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
255 PM CDT THU JUL 11 2013

OKZ049-053-112030-
CHOCTAW OK-PUSHMATAHA OK-
255 PM CDT THU JUL 11 2013

...SIGNIFICANT WEATHER ADVISORY...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 330 PM CDT
FOR THE FOLLOWING COUNTIES...

IN SOUTHEAST OKLAHOMA
     CENTRAL CHOCTAW AND SOUTHERN PUSHMATAHA

AT 255 PM CDT...A STRONG THUNDERSTORM WAS LOCATED OVER DELA...MOVING
SOUTH AT 10 MPH. SOME LOCATIONS THAT WILL BE AFFECTED BY THIS STORM
INCLUDE...HUGO...ORD...GRANT...GAY...GOODLAND...UNGER...SOPER...
MESSER...KENT...SPEER...ANTLERS...DELA AND RATTAN.

THIS STORM WILL BE CAPABLE OF PRODUCING NICKEL SIZE HAIL AND WIND
GUSTS TO 50 MPH.

LAT...LON 3400 9580 3430 9561 3424 9540 3390 9549
TIME...MOT...LOC 1955Z 020DEG 7KT 3418 9554

Special weather statement, Jul 11, 3:20 PM CDT, 15 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
320 PM CDT THU JUL 11 2013

ARZ019-112045-
CRAWFORD AR-
320 PM CDT THU JUL 11 2013

...SIGNIFICANT WEATHER ADVISORY...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 345 PM CDT
FOR THE FOLLOWING COUNTY...

IN NORTHWEST ARKANSAS
     CENTRAL CRAWFORD

AT 320 PM CDT...A STRONG THUNDERSTORM WAS LOCATED 3 MILES NORTH OF
RUDY...STATIONARY. SOME LOCATIONS THAT WILL BE AFFECTED BY THIS STORM
INCLUDE...CONCORD...ALMA...CEDARVILLE...KIBLER...SHIBLEY...FURRY...
FIGURE FIVE AND RUDY.

THIS STORM WILL BE CAPABLE OF PRODUCING WIND GUSTS TO 50 MPH.

LAT...LON 3541 9419 3547 9444 3548 9445 3567 9435
      3562 9414
TIME...MOT...LOC 2020Z 016DEG 2KT 3556 9428

Special weather statement, Jul 11, 3:24 PM CDT, 11 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
324 PM CDT THU JUL 11 2013

OKZ049-053-112100-
CHOCTAW OK-PUSHMATAHA OK-
324 PM CDT THU JUL 11 2013

...SIGNIFICANT WEATHER ADVISORY...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 400 PM CDT
FOR THE FOLLOWING COUNTIES...

IN SOUTHEAST OKLAHOMA
     EASTERN CHOCTAW AND SOUTHEASTERN PUSHMATAHA

AT 324 PM CDT...A STRONG THUNDERSTORM WAS LOCATED 11 MILES NORTHEAST
OF SWINK...MOVING SOUTH AT 10 MPH. SOME LOCATIONS THAT WILL BE
AFFECTED BY THIS STORM INCLUDE...FROGVILLE...FORT TOWSON...SWINK...
HUSKEY AND RAYMOND GARY STATE PARK.

THIS STORM WILL BE CAPABLE OF PRODUCING NICKEL SIZE HAIL AND WIND
GUSTS TO 50 MPH.

LAT...LON 3388 9533 3426 9520 3424 9511 3423 9514
      3394 9515 3393 9517 3395 9522 3393 9524
      3389 9525 3389 9527 3387 9529 3387 9531
TIME...MOT...LOC 2024Z 012DEG 10KT 3415 9512

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 11, 3:45 AM CDT	Heat Advisory	TSA	Wagoner	15 hr
Jul 11, 2:53 PM CDT	Special Weather Statement	TSA	Sequoyah	37 min
Jul 11, 2:55 PM CDT	Special Weather Statement	TSA	Choctaw	35 min
Jul 11, 3:24 PM CDT	Special Weather Statement	TSA	Choctaw	36 min
Jul 11, 4:06 PM CDT	Special Weather Statement	TSA	Creek	24 min
Jul 11, 4:53 PM CDT	Special Weather Statement	TSA	Creek	37 min
Jul 11, 4:54 PM CDT	Special Weather Statement	TSA	Okmulgee	36 min
Jul 11, 4:57 PM CDT	Severe Thunderstorm Warning	TSA	Creek	33 min
Jul 11, 5:09 PM CDT	Special Weather Statement	TSA	Creek	36 min
Jul 11, 5:13 PM CDT	Special Weather Statement	TSA	Pushmataha	32 min
Jul 11, 5:25 PM CDT	Special Weather Statement	TSA	Creek	35 min
Jul 11, 5:32 PM CDT	Special Weather Statement	TSA	Tulsa	28 min
Jul 11, 5:37 PM CDT	Special Weather Statement	TSA	Okfuskee	38 min
Jul 11, 5:50 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Okfuskee	40 min
Jul 11, 6:17 PM CDT	Special Weather Statement	TSA	Pushmataha	28 min
Jul 11, 6:23 PM CDT	Special Weather Statement	TSA	Creek	37 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.