Alert archive / Arkansas / Tornado Warnings in 2011

Tornado Warning 66, NWS Tulsa, OK

May 22, 2011Benton County, Arkansas; Delaware County, Oklahoma

NWS Tulsa, OK issued this tornado warning at May 22, 2011, 6:55 PM CDT for Benton County, Arkansas; Delaware County, Oklahoma. It was in force for 65 min. 3 reports 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 22, 2011, 6:55 PM CDT (23:55 UTC)
Expired: May 22, 2011, 8:00 PM CDT
In force: 65 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon

Counties Benton County, AR, Delaware County, OK

The radar

The Tulsa radar (KINX), 90 km from the middle of the area, began a volume at 23:58 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 22, 7:18 PM CDT	TORNADO	5 S Grove, OK	SPOTTER LOCATED 5 ENE OF ZENA, OK
May 22, 7:20 PM CDT	TORNADO	3 S Bernice, OK	SIGNIFICANT DAMAGE TO SEVERAL HOMES. BOAT DOCKS SEVERELY DAMAGED.
May 22, 7:26 PM CDT	TORNADO	3 N South West City, MO	* 2 INJ * DELAYED REPORT...A STORM SURVEY CONCLUDED THAT AN EF-3 TORNADO CROSSED INTO MCDONALD COUNTY MISSOURI FROM OKLAHOMA 3 MILES NORTH OF SOUTHWEST CITY AND TRACKED SOUTHEAST BEFORE LIFTING 2 MILES NORTHEAST OF SOUTHWEST CITY.

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

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 22, 1:27 PM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 11.9 hours before the alert went out and 88 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: 2645 J/kg
Mixed-layer CIN: -122 J/kg
Mixed-layer LCL: 678 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 424 m²/s²
0-3 km storm-relative helicity: 422 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 16.9

Open this sounding in Storm Lab

The text

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

096 
WFUS54 KTSA 222355
TORTSA
ARC007-OKC041-230100-
/O.NEW.KTSA.TO.W.0066.110522T2355Z-110523T0100Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TULSA OK
655 PM CDT SUN MAY 22 2011

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN DELAWARE COUNTY IN NORTHEAST OKLAHOMA
  WESTERN BENTON COUNTY IN NORTHWEST ARKANSAS

* UNTIL 800 PM CDT

* AT 653 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED 7 MILES NORTHWEST OF JAY...MOVING EAST AT 20
  MPH. THIS IS A DANGEROUS STORM WITH STRONG LOW LEVEL ROTATION...A
  TORNADO IS OCCURRING OR COULD FORM AT ANY TIME.

* SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...JAY...
  GROVE...MAYSVILLE...GENTRY...DECATUR...GRAVETTE AND SPRINGTOWN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE NEAR THE PATH OF THIS STORM...TAKE COVER NOW! IF NO
UNDERGROUND SHELTER IS AVAILABLE MOVE TO AN INTERIOR ROOM ON THE
LOWEST FLOOR. MOBILE HOMES AND VEHICLES SHOULD BE ABANDONED FOR MORE
SUBSTANTIAL SHELTER. AVOID WINDOWS!

&&

LAT...LON 3651 9461 3650 9437 3623 9438 3639 9497
      3661 9495 3666 9461
TIME...MOT...LOC 2355Z 272DEG 19KT 3649 9487

$$

2 follow-up statements

816 
WWUS54 KTSA 230007
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
707 PM CDT SUN MAY 22 2011

ARC007-OKC041-230100-
/O.CON.KTSA.TO.W.0066.000000T0000Z-110523T0100Z/
BENTON AR-DELAWARE OK-
707 PM CDT SUN MAY 22 2011

...TORNADO WARNING REMAINS IN EFFECT UNTIL 800 PM CDT FOR
NORTHEASTERN DELAWARE AND WESTERN BENTON COUNTIES...

AT 702 PM CDT...DOPPLER RADAR CONTINUED TO INDICATE A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING A TORNADO LOCATED NEAR ZENA...
MOVING EAST AT 20 MPH. THIS IS A DANGEROUS STORM WITH STRONG LOW
LEVEL ROTATION...A TORNADO IS OCCURRING OR COULD FORM AT ANY TIME.

SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
MAYSVILLE...CHEROKEE CITY...GENTRY...SULPHUR SPRINGS...DECATUR...
GRAVETTE AND SPRINGTOWN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE NEAR THE PATH OF THIS STORM...TAKE COVER NOW! IF NO
UNDERGROUND SHELTER IS AVAILABLE MOVE TO AN INTERIOR ROOM ON THE
LOWEST FLOOR. MOBILE HOMES AND VEHICLES SHOULD BE ABANDONED FOR MORE
SUBSTANTIAL SHELTER. AVOID WINDOWS!

&&

LAT...LON 3651 9461 3650 9437 3623 9438 3637 9488
      3662 9488 3666 9461
TIME...MOT...LOC 0007Z 272DEG 19KT 3650 9477

$$

672 
WWUS54 KTSA 230015
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
715 PM CDT SUN MAY 22 2011

ARC007-OKC041-230100-
/O.CON.KTSA.TO.W.0066.000000T0000Z-110523T0100Z/
BENTON AR-DELAWARE OK-
715 PM CDT SUN MAY 22 2011

...TORNADO WARNING REMAINS IN EFFECT UNTIL 800 PM CDT FOR
NORTHEASTERN DELAWARE AND NORTHWESTERN BENTON COUNTIES...

AT 711 PM CDT...DOPPLER RADAR CONTINUED TO INDICATE A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING A TORNADO LOCATED 6 MILES SOUTHEAST
OF GROVE...MOVING EAST AT 20 MPH. THIS IS A DANGEROUS STORM WITH
STRONG LOW LEVEL ROTATION...A TORNADO IS OCCURRING OR COULD FORM AT
ANY TIME.

SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...SULPHUR
SPRINGS AND GRAVETTE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE NEAR THE PATH OF THIS STORM...TAKE COVER NOW! IF NO
UNDERGROUND SHELTER IS AVAILABLE MOVE TO AN INTERIOR ROOM ON THE
LOWEST FLOOR. MOBILE HOMES AND VEHICLES SHOULD BE ABANDONED FOR MORE
SUBSTANTIAL SHELTER. AVOID WINDOWS!

&&

LAT...LON 3651 9461 3650 9437 3633 9438 3647 9479
      3663 9480 3666 9461
TIME...MOT...LOC 0015Z 272DEG 19KT 3652 9468

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
May 22, 1:36 AM CDT	Special Weather Statement	TSA	Madison	24 min
May 21, 7:46 PM CDT	Special Weather Statement	TSA	Creek	29 min
May 21, 7:54 PM CDT	Severe Thunderstorm Warning	TSA	Creek	22 min
May 21, 7:58 PM CDT	Special Weather Statement	TSA	Okfuskee	32 min
May 21, 8:28 PM CDT	Special Weather Statement	TSA	Creek	32 min
May 21, 8:36 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Okmulgee, Tulsa	39 min
May 21, 9:02 PM CDT	Special Weather Statement	TSA	Tulsa	28 min
May 22, 5:17 PM CDT	Special Weather Statement	TSA	Ottawa	28 min
May 22, 5:46 PM CDT	Severe Thunderstorm Warning	TSA	Ottawa	59 min
May 22, 5:51 PM CDT	Special Weather Statement	TSA	Wagoner	24 min
May 22, 5:54 PM CDT	Special Weather Statement	TSA	Craig	36 min
May 22, 5:59 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Delaware, Mayes, Ottawa	61 min
May 22, 6:03 PM CDT	Severe Thunderstorm Warning	TSA	Cherokee, Mayes, Wagoner	57 min
May 22, 6:24 PM CDT	Tornado Warning	TSA	Craig, Delaware, Ottawa	36 min
May 22, 6:42 PM CDT	Tornado Warning	TSA	Cherokee, Delaware, Mayes, Wagoner	33 min
May 22, 6:47 PM CDT	Special Weather Statement	TSA	Okfuskee	28 min
May 22, 6:52 PM CDT	Severe Thunderstorm Warning	TSA	McIntosh, Muskogee, Okmulgee	38 min

Nearby

Tornado Warnings in Arkansas, 2011 Tornado Warnings in Oklahoma, 2011 Every tornado warning in 2011 Tornadoes 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.