Alert archive / Oklahoma / Tornado Warnings in 2011

Tornado Warning 20, NWS Tulsa, OK

April 14, 2011Delaware County, Oklahoma; Benton County, Arkansas

NWS Tulsa, OK issued this tornado warning at Apr 14, 2011, 7:48 PM CDT for Delaware County, Oklahoma; Benton County, Arkansas. It was in force for 42 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: Apr 14, 2011, 7:48 PM CDT (00:48 UTC)
Expired: Apr 14, 2011, 8:30 PM CDT
In force: 42 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon

Counties Benton County, AR, Delaware County, OK

The radar

The Tulsa radar (KINX), 89 km from the middle of the area, began a volume at 00:51 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
Apr 14, 7:51 PM CDT	TSTM WND DMG	4 W Jay, OK	TWO TRAILER HOUSES DESTROYED. POWER LINES AND TREES DOWN. ONE VEHICLE TURNED OVER ON ITS ROOF. NEAR CEMETARY ABOUT 3 WEST OF EUCHA. POSSIBLE TORNADO.

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
Apr 14, 2:28 PM CDT	Tornado Watch PDS	SPC	7 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 0.8 hours before the alert went out and 89 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2194 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 81 m²/s²
0-3 km storm-relative helicity: 249 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

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

147 
WFUS54 KTSA 150048
TORTSA
ARC007-OKC041-150130-
/O.NEW.KTSA.TO.W.0020.110415T0048Z-110415T0130Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TULSA OK
748 PM CDT THU APR 14 2011

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL DELAWARE COUNTY IN NORTHEAST OKLAHOMA
  NORTHWESTERN BENTON COUNTY IN NORTHWEST ARKANSAS

* UNTIL 830 PM CDT

* AT 747 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED 6 MILES SOUTHWEST OF JAY...MOVING NORTHEAST AT
  40 MPH.

* SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...JAY.

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 3653 9462 3650 9461 3650 9437 3629 9489
      3640 9496 3665 9462 3664 9461
TIME...MOT...LOC 0049Z 232DEG 37KT 3637 9485

$$

2 follow-up statements

573 
WWUS54 KTSA 150057
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
757 PM CDT THU APR 14 2011

ARC007-OKC041-150130-
/O.CON.KTSA.TO.W.0020.000000T0000Z-110415T0130Z/
BENTON AR-DELAWARE OK-
757 PM CDT THU APR 14 2011

...TORNADO WARNING REMAINS IN EFFECT UNTIL 830 PM CDT FOR CENTRAL
DELAWARE AND NORTHWESTERN BENTON COUNTIES...

AT 756 PM CDT...DOPPLER RADAR CONTINUED TO INDICATE A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING A TORNADO LOCATED NEAR JAY...MOVING
NORTHEAST AT 45 MPH.

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

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 3653 9462 3650 9461 3650 9437 3634 9485
      3640 9492 3665 9462 3664 9461
TIME...MOT...LOC 0058Z 232DEG 37KT 3642 9479

$$

335 
WWUS54 KTSA 150114
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
814 PM CDT THU APR 14 2011

ARC007-OKC041-150130-
/O.CON.KTSA.TO.W.0020.000000T0000Z-110415T0130Z/
BENTON AR-DELAWARE OK-
814 PM CDT THU APR 14 2011

...TORNADO WARNING REMAINS IN EFFECT UNTIL 830 PM CDT FOR EASTERN
DELAWARE AND NORTHWESTERN BENTON COUNTIES...

AT 814 PM CDT...DOPPLER RADAR CONTINUED TO INDICATE A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING A TORNADO LOCATED 11 MILES WEST OF
SULPHUR SPRINGS...MOVING NORTHEAST AT 35 MPH.

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

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 3653 9462 3650 9461 3650 9437 3639 9469
      3649 9480 3665 9462 3664 9461
TIME...MOT...LOC 0115Z 239DEG 32KT 3647 9464

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 14, 7:01 PM CDT	Severe Thunderstorm Warning	TSA	Muskogee, Okmulgee, Tulsa, Wagoner	44 min
Apr 14, 7:09 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Delaware, Mayes	51 min
Apr 14, 7:36 PM CDT	Severe Thunderstorm Warning	TSA	Delaware	39 min
Apr 14, 7:39 PM CDT	Severe Thunderstorm Warning	TSA	Mayes, Muskogee, Rogers, Wagoner	51 min
Apr 14, 7:47 PM CDT	Tornado Warning	TSA	Haskell, Latimer, Pittsburg	43 min
Apr 14, 7:54 PM CDT	Tornado Warning	TSA	Delaware	36 min
Apr 14, 7:55 PM CDT	Tornado Warning	TSA	Latimer, Pittsburg, Pushmataha	65 min
Apr 14, 8:15 PM CDT	Severe Thunderstorm Warning	TSA	Delaware, Ottawa	45 min
Apr 14, 8:20 PM CDT	Severe Thunderstorm Warning	TSA	Haskell, Latimer, LeFlore, Pushmataha	55 min
Apr 14, 8:20 PM CDT	Tornado Warning	TSA	Cherokee, Mayes, Wagoner	40 min
Apr 14, 8:27 PM CDT	Severe Thunderstorm Warning	TSA	Creek	63 min
Apr 14, 8:27 PM CDT	Tornado Warning	TSA	Haskell, Latimer, LeFlore	48 min
Apr 14, 8:29 PM CDT	Special Weather Statement	TSA	Tulsa	31 min
Apr 14, 8:29 PM CDT	Tornado Warning	TSA	Latimer, LeFlore	46 min
Apr 14, 8:33 PM CDT	Tornado Warning	TSA	Haskell, Latimer, LeFlore	42 min
Apr 14, 8:38 PM CDT	Tornado Warning	TSA	Latimer, Pittsburg	28 min
Apr 14, 8:40 PM CDT	Tornado Warning	TSA	Haskell, Latimer, Pittsburg	35 min
Apr 14, 9:00 PM CDT	Tornado Warning	TSA	Latimer, Pittsburg, Pushmataha	30 min
Apr 14, 9:06 PM CDT	Special Weather Statement	TSA	Okmulgee	24 min
Apr 14, 9:14 PM CDT	Tornado Warning	TSA	LeFlore	61 min
Apr 14, 9:21 PM CDT	Tornado Warning	TSA	Latimer	39 min
Apr 14, 9:26 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Mayes, Muskogee, Okmulgee, Tulsa, Wagoner	64 min
Apr 14, 9:26 PM CDT	Tornado Warning	TSA	Latimer, LeFlore, Pushmataha	64 min
Apr 14, 9:41 PM CDT	Special Weather Statement	TSA	Pittsburg	34 min
Apr 14, 9:48 PM CDT	Tornado Warning	TSA	LeFlore, Sequoyah	42 min
Apr 14, 9:58 PM CDT	Tornado Warning	TSA	Wagoner	32 min
Apr 14, 10:00 PM CDT	Severe Thunderstorm Warning	TSA	Mayes, Rogers, Wagoner	30 min
Apr 14, 10:11 PM CDT	Severe Thunderstorm Warning	TSA	Latimer, Pittsburg, Pushmataha	37 min
Apr 14, 10:14 PM CDT	Severe Thunderstorm Warning	TSA	Cherokee, Mayes, Rogers, Wagoner	46 min
Apr 14, 10:17 PM CDT	Tornado Warning	TSA	LeFlore	58 min
Apr 14, 10:26 PM CDT	Tornado Warning	TSA	Choctaw, Pushmataha	34 min
Apr 14, 10:30 PM CDT	Tornado Warning	TSA	LeFlore	45 min
Apr 14, 10:36 PM CDT	Areal Flood Advisory	TSA	LeFlore, Pushmataha, Sequoyah	114 min
Apr 14, 10:44 PM CDT	Severe Thunderstorm Warning	TSA	Latimer, LeFlore, Pushmataha	46 min
Apr 14, 10:50 PM CDT	Special Weather Statement	TSA	Delaware	40 min
Apr 14, 10:56 PM CDT	Special Weather Statement	TSA	Ottawa	19 min
Apr 15, 4:12 AM CDT	Wind Advisory	TSA	Choctaw, Creek, Haskell, Latimer, McIntosh, Muskogee and 10 more	21 hr
Apr 14, 10:28 PM CDT	Tornado Warning	TSA	Crawford, Franklin, Sebastian	62 min
Apr 14, 11:12 PM CDT	Tornado Warning	TSA	Franklin, Sebastian	33 min
Apr 14, 11:24 PM CDT	Special Weather Statement	TSA	Madison	36 min
Apr 15, 12:43 AM CDT	Special Weather Statement	TSA	Carroll	32 min

Nearby

Tornado Warnings in Oklahoma, 2011 Tornado Warnings in Arkansas, 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.