Alert archive / Oklahoma / Tornado Warnings in 2011

Tornado Warning 68, NWS Norman, OK

May 24, 2011Atoka County, Bryan County, Johnston County, Oklahoma

NWS Norman, OK issued this tornado warning at May 24, 2011, 7:54 PM CDT for Atoka County, Bryan County, Johnston County, Oklahoma. It was in force for 51 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 24, 2011, 7:54 PM CDT (00:54 UTC)
Expired
May 24, 2011, 8:45 PM CDT
In force
51 min
Issued by
NWS Norman, OK
Area
Storm-based polygon

Counties Atoka County, OK, Bryan County, OK, Johnston County, OK

The radar

The Norman radar (KTLX), 151 km from the middle of the area, began a volume at 00:57 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 watch it was issued in

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

IssuedProductOfficeLasted
May 24, 12:47 PM CDTTornado Watch PDSSPC11 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 0.9 hours before the alert went out and 169 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, Fort Worth, TX at 00:00Z on 2011-05-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2867 joules per kilogram.LCLLFCEL10008507005003002001001 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, Fort Worth, TX at 00:00Z on 2011-05-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 357 square meters per square second.1939587897117Sfc1 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
2867 J/kg
Mixed-layer CIN
-16 J/kg
Mixed-layer LCL
1457 m above ground
0-6 km bulk shear
69 kt
0-1 km storm-relative helicity
357 m²/s²
0-3 km storm-relative helicity
602 m²/s²
Significant tornado parameter
6.2
Supercell composite
44.3

Open this sounding in Storm Lab

The text

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

508 
WFUS54 KOUN 250054
TOROUN
OKC005-013-069-250145-
/O.NEW.KOUN.TO.W.0068.110525T0054Z-110525T0145Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORMAN OK
754 PM CDT TUE MAY 24 2011

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHWESTERN ATOKA COUNTY IN SOUTHEAST OKLAHOMA...
  NORTHWESTERN BRYAN COUNTY IN SOUTHEAST OKLAHOMA...
  SOUTHEASTERN JOHNSTON COUNTY IN SOUTHEAST OKLAHOMA...

* UNTIL 845 PM CDT

* AT 754 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
  THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 9 MILES SOUTHWEST OF
  NIDA...MOVING NORTHEAST AT 50 MPH.

* LOCATIONS IN THE WARNING INCLUDE BOGGY DEPOT STATE PARK...CADDO...
  CANEY...COLEMAN...KENEFIC...NIDA...NORTHEASTERN LAKE TEXOMA AND
  TUSHKA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. LEAVE MOBILE HOMES AND VEHICLES. IF POSSIBLE...MOVE
TO A BASEMENT OR STORM SHELTER. OTHERWISE MOVE TO AN INTERIOR ROOM OR
HALLWAY ON THE LOWEST FLOOR. STAY AWAY FROM WINDOWS AND OUTSIDE
WALLS.

&&

LAT...LON 3416 9616 3405 9646 3401 9660 3404 9658
      3406 9655 3410 9655 3414 9658 3418 9664
      3429 9641 3439 9624 3442 9616
TIME...MOT...LOC 0054Z 246DEG 43KT 3409 9663

$$


CJS
1 follow-up statement
020 
WWUS54 KOUN 250133
SVSOUN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
833 PM CDT TUE MAY 24 2011

OKC069-250140-
/O.CAN.KOUN.TO.W.0068.000000T0000Z-110525T0145Z/
JOHNSTON OK-
833 PM CDT TUE MAY 24 2011

...THE TORNADO WARNING HAS BEEN CANCELLED FOR SOUTHEASTERN JOHNSTON
COUNTY...

LAT...LON 3416 9616 3408 9638 3409 9638 3411 9640
      3414 9639 3418 9638 3421 9640 3429 9639
      3429 9641 3439 9624 3442 9616
TIME...MOT...LOC 0130Z 246DEG 43KT 3426 9615

$$

OKC005-013-250145-
/O.CON.KOUN.TO.W.0068.000000T0000Z-110525T0145Z/
BRYAN OK-ATOKA OK-
833 PM CDT TUE MAY 24 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 845 PM CDT FOR
SOUTHWESTERN ATOKA AND NORTHERN BRYAN COUNTIES...

AT 830 PM CDT...NATIONAL WEATHER SERVICE RADAR SEVERE THUNDERSTORMS 
OVER MUCH OF ATOKA AND FAR NORTHWEST BRYAN COUNTIES... MOVING 
NORTHEAST AT 50 MPH. RADAR ALSO INDICATES CIRCULATIONS HAVE WEAKENED 
ALTHOUGH LARGE HAIL AND STRONG WINDS WILL BE POSSIBLE.

MEANWHILE... A TORNADO WARNING REMAINS IN EFFECT FOR PORTIONS OF 
SOUTHERN AND EASTERN BRYAN COUNTY. 

* LOCATIONS IN THE WARNING INCLUDE BOGGY DEPOT STATE PARK...CADDO...
  CANEY...KENEFIC AND TUSHKA.

LAT...LON 3416 9616 3408 9638 3409 9638 3411 9640
      3414 9639 3418 9638 3421 9640 3429 9639
      3429 9641 3439 9624 3442 9616
TIME...MOT...LOC 0130Z 246DEG 43KT 3426 9615

$$

The office that day

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

IssuedProductOfficeCountiesLasted
May 24, 7:11 PM CDTSevere Thunderstorm WarningOUNLove34 min
May 24, 7:13 PM CDTTornado WarningOUNSeminole17 min
May 24, 7:19 PM CDTSevere Thunderstorm WarningOUNCoal, Johnston, Pontotoc41 min
May 24, 7:25 PM CDTSevere Thunderstorm WarningOUNCarter, Marshall65 min
May 24, 7:29 PM CDTTornado WarningOUNLove, Marshall46 min
May 24, 7:33 PM CDTTornado WarningOUNJohnston42 min
May 24, 7:39 PM CDTTornado WarningOUNMarshall51 min
May 24, 7:46 PM CDTTornado WarningOUNCoal44 min
May 24, 7:58 PM CDTSevere Thunderstorm WarningOUNBryan62 min
May 24, 8:06 PM CDTTornado WarningOUNAtoka, Coal39 min
May 24, 8:20 PM CDTTornado WarningOUNBryan55 min
May 24, 8:23 PM CDTSevere Thunderstorm WarningOUNAtoka67 min
May 24, 8:29 PM CDTSevere Thunderstorm WarningOUNHughes, Pontotoc, Seminole61 min
May 24, 8:44 PM CDTSevere Thunderstorm WarningOUNAtoka37 min
May 24, 9:00 PM CDTSevere Thunderstorm WarningOUNBryan60 min
May 24, 9:17 PM CDTTornado WarningOUNBryan28 min
May 24, 9:32 PM CDTSpecial Weather StatementOUNHughes28 min
May 24, 9:48 PM CDTSpecial Weather StatementOUNHughes27 min
May 24, 10:05 PM CDTSpecial Weather StatementOUNBryan25 min
May 25, 1:49 AM CDTWind AdvisoryOUNAlfalfa, Beckham, Blaine, Custer, Dewey, Ellis and 10 more17 hr
May 25, 2:01 AM CDTSpecial Weather StatementOUNHarper59 min
May 25, 3:09 AM CDTSpecial Weather StatementOUNEllis, Harper, Woods, Woodward51 min

Nearby

Tornado Warnings in Oklahoma, 2011Every tornado warning in 2011Tornadoes 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.