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Tornado
Table
A1 A2 B1 B2 B3 B4 C1 C2 D1 D2 D3 E1

The Chickasha-Blanchard-Newcastle
Tornado of May 24, 2011

Tornado Information

Tornado
Number
Date Time
(CST)
Length
of Path
(miles)
Width
of Path
(yards)
F-Scale Killed Injured County Location
C1 05/24/2011 1606-1701 33 880 EF4 1 48 Grady/ McClain/ Cleveland 2 S Chickasha - SW Oklahoma City (near SW 149th and Portland)

This tornado formed on the south side of Chickasha in Grady County, quickly producing EF-2 damage. Mobile homes were damaged and destroyed, trees were uprooted/destroyed, outbuildings were destroyed, and many buildings lost significant portions of their roofs. One fatality occurred as a mobile home was destroyed in the south portion of Chickasha. As the tornado moved northeast of Chickasha, it gained significant strength, with several areas receiving EF-4 damage. Well-built homes were destroyed. Trees were debarked with only stumps remaining. Cars were thrown hundreds of feet. Almost continuous EF-3/occasional EF-4 damage occurred northeast until it crossed into McClain County 1.5 miles south of Highway 9. The tornado was probably at its strongest as it neared/crossed the McClain county line. Wind speeds there were estimated near 200 mph.

Significant damage continued as the violent tornado crossed over the McClain County line. This may have been the strongest portion of this tornado, with wind speeds near 200 mph. Well-built homes were destroyed, with some cleaned off of their foundation. A concrete dome home was severely damage, mainly by the flying debris. Trees were debarked or destroyed. Very little was left standing for the first few miles into McClain County. Fairly consistent EF-3, with brief periods of EF-4 damage occurred as the tornado neared/crossed Highway 9, near the Highway 76 junction. The tornado began to weaken as it moved toward the Cleveland County border, with mainly trees and power poles/lines snapped.

As the tornado continued into Cleveland County, only minor tree/power pole/power line damage occurred just inside the Cleveland County line. A few barns and outbuilding also sustained minor damage east of I-44. The tornado dissipated just north of the Canadian River. After it was finally over, the tornado continued for just under an hour, with a length of around 32 miles. Peak wind speeds were estimated just under 200 mph. Monetary damage estimates were not available.

Tornado Track

Preliminary Tornado Track for the Chickasha-Blanchard-Newcastle Tornado of May 24, 2011

Radar Images

Twin Lakes, OK (KTLX) Radar Relectivity and Storm Relative Velocity
Twin Lakes, OK (KTLX) Combination Radar Reflectivity and Storm Relative Velocity at 5:10 PM CDT on 5/24/2011
5:10 PM CDT
  Twin Lakes, OK (KTLX) Combination Radar Reflectivity and Storm Relative Velocity at 5:14 PM CDT on 5/24/2011
5:14 PM CDT
Twin Lakes, OK (KTLX) Combination Radar Reflectivity and Storm Relative Velocity at 5:18 PM CDT on 5/24/2011
5:18 PM CDT
  Twin Lakes, OK (KTLX) Combination Radar Reflectivity and Storm Relative Velocity at 5:22 PM CDT on 5/24/2011
5:22 PM CDT
Twin Lakes, OK (KTLX) Combination Radar Reflectivity and Storm Relative Velocity at 5:26 PM CDT on 5/24/2011
5:26 PM CDT
  Twin Lakes, OK (KTLX) Combination Radar Reflectivity and Storm Relative Velocity at 5:31 PM CDT on 5/24/2011
5:31 PM CDT
Twin Lakes, OK (KTLX) Combination Radar Reflectivity and Storm Relative Velocity at 5:35 PM CDT on 5/24/2011
5:35 PM CDT
  Twin Lakes, OK (KTLX) Combination Radar Reflectivity and Storm Relative Velocity at 5:39 PM CDT on 5/24/2011
5:39 PM CDT
Twin Lakes, OK (KTLX) Combination Radar Reflectivity and Storm Relative Velocity at 5:44 PM CDT on 5/24/2011
5:44 PM CDT
  Twin Lakes, OK (KTLX) Combination Radar Reflectivity and Storm Relative Velocity at 5:48 PM CDT on 5/24/2011
5:48 PM CDT
Twin Lakes, OK (KTLX) Combination Radar Reflectivity and Storm Relative Velocity at 5:52 PM CDT on 5/24/2011
5:52 PM CDT
  Twin Lakes, OK (KTLX) Combination Radar Reflectivity and Storm Relative Velocity at 5:56 PM CDT on 5/24/2011
5:56 PM CDT

Tornado Photos


Photo courtesy of Brandon Crowson
 
Photo courtesy of Mike Furrer

Photo courtesy of Marco Kaschuba
 
Photo courtesy of Marco Kaschuba

Photo courtesy of Marco Kaschuba
 
Photo courtesy of Tom Pastrano

Photo courtesy of Heather Moser
 
Photo courtesy of Heather Moser

Photo courtesy of Heather Moser
 
Photo courtesy of Heather Moser

Photo courtesy of Heather Moser
 
Photo courtesy of Heather Moser

Photo courtesy of Rob Satkus
 
Photo courtesy of Rob Satkus

Damage Photos

Tornado C1 Damage Photo   Tornado C1 Damage Photo
Tornado C1 Damage Photo    

Tornado Warnings and Warning Updates

4:50 PM CDT - 5:13 PM CDT - 5:18 PM CDT - 5:55 PM CDT


WFUS54 KOUN 242150
TOROUN
OKC015-017-051-242230-
/O.NEW.KOUN.TO.W.0047.110524T2150Z-110524T2230Z/

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

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* TORNADO WARNING FOR...
EXTREME SOUTHEASTERN CANADIAN COUNTY IN CENTRAL OKLAHOMA...
NORTHERN GRADY COUNTY IN CENTRAL OKLAHOMA...
SOUTHEASTERN CADDO COUNTY IN SOUTHWEST OKLAHOMA...

* UNTIL 530 PM CDT

* AT 450 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR CEMENT...MOVING
NORTHEAST AT 50 MPH.

* LOCATIONS IN THE WARNING INCLUDE AMBER...BRIDGE CREEK...CEMENT...
CHICKASHA...LAVERTY...MIDDLEBERG...NORGE...POCASSET...SOUTHWESTERN
OKLAHOMA CITY...TABLER AND TUTTLE.

THIS INCLUDES INTERSTATE 44 BETWEEN MILE MARKERS 67 AND 101.

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 3490 9822 3534 9786 3538 9768 3509 9767
3490 9802 3488 9810
TIME...MOT...LOC 2150Z 214DEG 41KT 3497 9809

$$





WWUS54 KOUN 242213 RRA
SVSOUN

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

OKC015-242222-
/O.CAN.KOUN.TO.W.0047.000000T0000Z-110524T2230Z/
CADDO OK-
513 PM CDT TUE MAY 24 2011

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

LAT...LON 3494 9801 3497 9809 3499 9809 3534 9786
3538 9768 3509 9767 3490 9802
TIME...MOT...LOC 2212Z 222DEG 33KT 3503 9791

$$

OKC017-051-242230-
/O.CON.KOUN.TO.W.0047.000000T0000Z-110524T2230Z/
CANADIAN OK-GRADY OK-
513 PM CDT TUE MAY 24 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 530 PM CDT FOR NORTHERN
GRADY AND EXTREME SOUTHEASTERN CANADIAN COUNTIES...

AT 512 PM CDT...RADAR AND STORM SPOTTERS OBSERVED A TORNADO NEAR
INTERSTAE 44 APPROACHING HIGHWAY 9. PEOPLE IN CHICKASHA SHOULD TAKE
IMMEDIATE TORNADO PRECAUTIONS.

* LOCATIONS IN THE WARNING INCLUDE AMBER...BRIDGE CREEK...
CHICKASHA...LAVERTY...MIDDLEBERG...NORGE...POCASSET...SOUTHWESTERN
OKLAHOMA CITY...TABLER AND TUTTLE.

THIS INCLUDES INTERSTATE 44 BETWEEN MILE MARKERS 74 AND 101.

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 3494 9801 3497 9809 3499 9809 3534 9786
3538 9768 3509 9767 3490 9802
TIME...MOT...LOC 2212Z 222DEG 33KT 3503 9791

$$





WWUS54 KOUN 242218
SVSOUN

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

OKC017-051-242230-
/O.CON.KOUN.TO.W.0047.000000T0000Z-110524T2230Z/
CANADIAN OK-GRADY OK-
518 PM CDT TUE MAY 24 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 530 PM CDT FOR NORTHERN
GRADY AND EXTREME SOUTHEASTERN CANADIAN COUNTIES...

AT 516 PM CDT...A THUNDERSTORM WITH A HISTORY OF PRODUCING TORNADOES
WAS LOCATED OVER NORTHEAST PARTS OF CHICKASHA...MOVING NORTHEAST AT
40 MPH. THIS STORM WILL LIKELY TRACK ALONG I-44 TOWARD BRIDGE
CREEK AND NEW CASTLE.


* LOCATIONS IN THE WARNING INCLUDE AMBER...BRIDGE CREEK...
CHICKASHA...LAVERTY...MIDDLEBERG...NORGE...POCASSET...SOUTHWESTERN
OKLAHOMA CITY...TABLER AND TUTTLE.

THIS INCLUDES INTERSTATE 44 BETWEEN MILE MARKERS 73 AND 101.

LAT...LON 3494 9801 3497 9809 3499 9809 3534 9786
3538 9768 3509 9767 3490 9802
TIME...MOT...LOC 2216Z 222DEG 33KT 3506 9788

$$





WFUS54 KOUN 242223
TOROUN
OKC027-051-087-242300-
/O.NEW.KOUN.TO.W.0050.110524T2223Z-110524T2300Z/

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

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* TORNADO WARNING FOR...
NORTHWESTERN CLEVELAND COUNTY IN CENTRAL OKLAHOMA...
NORTHEASTERN GRADY COUNTY IN CENTRAL OKLAHOMA...
NORTHWESTERN MCCLAIN COUNTY IN CENTRAL OKLAHOMA...

* UNTIL 600 PM CDT

* AT 522 PM CDT...A SEVERE THUNDERSTORM WITH A LARGE TORNADO WAS
MOVING NORTHEAST AT 40 MPH. THIS STORM IS TRAVELING TOWARD
BRIDGE CREEK...NEW CASTLE...MOORE. THIS IS A VERY DANGEROUS
TORNADO.

* LOCATIONS IN THE WARNING INCLUDE AMBER...BLANCHARD...BRIDGE
CREEK...MIDDLEBERG...MOORE...NEWCASTLE...NORTHWESTERN NORMAN...
SOUTHERN OKLAHOMA CITY...STANLEY DRAPER LAKE AND TABLER.

THIS INCLUDES INTERSTATE 35 BETWEEN MILE MARKERS 110 AND 120.

THIS INCLUDES INTERSTATE 44 BETWEEN MILE MARKERS 85 AND 114.

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 3499 9787 3520 9792 3534 9771 3534 9767
3537 9767 3538 9765 3538 9722
TIME...MOT...LOC 2222Z 231DEG 33KT 3509 9783

$$





WFUS54 KOUN 242255
TOROUN
OKC027-087-109-242345-
/O.NEW.KOUN.TO.W.0055.110524T2255Z-110524T2345Z/

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

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* TORNADO WARNING FOR...
NORTHWESTERN CLEVELAND COUNTY IN CENTRAL OKLAHOMA...
NORTHWESTERN MCCLAIN COUNTY IN CENTRAL OKLAHOMA...
OKLAHOMA COUNTY IN CENTRAL OKLAHOMA...

* UNTIL 645 PM CDT

* AT 555 PM CDT...A LARGE... VIOLENT TORNADO WAS LOCATED 4 MILES
NORTHEAST OF NEWCASTLE...MOVING NORTHEAST AT 40 MPH.

* LOCATIONS IN THE WARNING INCLUDE ARCADIA...CHOCTAW...DEL CITY...
EASTERN EDMOND...EASTERN OKLAHOMA CITY...FOREST PARK...HARRAH...
JONES...LAKE ALUMA...LUTHER...MIDWEST CITY...MOORE...NEWALLA...
NEWCASTLE...NICOMA PARK...NORTHWESTERN NORMAN...SPENCER...STANLEY
DRAPER LAKE...TINKER AIR FORCE BASE AND VALLEY BROOK.

THIS INCLUDES INTERSTATE 35 BETWEEN MILE MARKERS 110 AND 146.

THIS INCLUDES INTERSTATE 40 BETWEEN MILE MARKERS 147 AND 172.

THIS INCLUDES INTERSTATE 44 BETWEEN MILE MARKERS 105 AND 152.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS AN EXTREMELY DANGEROUS AND LIFE THREATENING SITUATION. IF YOU
ARE IN THE PATH OF THIS LARGE AND DESTRUCTIVE TORNADO... TAKE COVER
IMMEDIATELY. A BASEMENT OR STORM SHELTER IS BEST. OTHERWISE...TAKE
COVER IN AN INTERIOR CLOSET OR BATHROOM AWAY FROM OUTSIDE WALLS AND
WINDOWS. COVER YOUR HEAD WITH PILLOWS AND BLANKETS.

&&

LAT...LON 3539 9715 3518 9755 3530 9767 3572 9742
3572 9714
TIME...MOT...LOC 2255Z 219DEG 34KT 3532 9755

$$

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