Alert archive / Arkansas / Tornado Warnings in 2011

Tornado Warning 59, NWS Tulsa, OK

April 26, 2011Crawford County, Franklin County, Sebastian County, Arkansas

NWS Tulsa, OK issued this tornado warning at Apr 26, 2011, 6:09 PM CDT for Crawford County, Franklin County, Sebastian County, Arkansas. It was in force for 51 min. 4 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: Apr 26, 2011, 6:09 PM CDT (23:09 UTC)
Expired: Apr 26, 2011, 7:00 PM CDT
In force: 51 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon

Counties Crawford County, AR, Franklin County, AR, Sebastian County, AR

The radar

The Western Arkansas radar (KSRX), 47 km from the middle of the area, began a volume at 23:10 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
Apr 26, 6:12 PM CDT	HAIL 1	Mulberry, AR
Apr 26, 6:18 PM CDT	HAIL 1.75	Mulberry, AR
Apr 26, 6:21 PM CDT	HAIL 2.75	Mulberry, AR
Apr 26, 6:30 PM CDT	HAIL 0.75	Jethro, AR

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 26, 5:08 PM CDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 11.2 hours before the alert went out and 162 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: 8 J/kg
Mixed-layer CIN: -17 J/kg
Mixed-layer LCL: 466 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 41 m²/s²
0-3 km storm-relative helicity: 94 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

687 
WFUS54 KTSA 262309
TORTSA
ARC033-047-131-270000-
/O.NEW.KTSA.TO.W.0059.110426T2309Z-110427T0000Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TULSA OK
609 PM CDT TUE APR 26 2011

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN CRAWFORD COUNTY IN NORTHWEST ARKANSAS
  FRANKLIN COUNTY IN WEST CENTRAL ARKANSAS
  NORTHEASTERN SEBASTIAN COUNTY IN WEST CENTRAL ARKANSAS

* UNTIL 700 PM CDT

* AT 606 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED 4 MILES SOUTHEAST OF ALMA...MOVING EAST AT 30
  MPH.

* SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...DYER...
  MULBERRY...OZARK...DENNING...ALTUS...WIEDERKEHR VILLAGE AND CASS.

THIS INCLUDES INTERSTATE 40 BETWEEN MILE MARKERS 9 AND 43.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO A TORNADO...THIS STORM IS CAPABLE OF PRODUCING 
BASEBALL SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS. IF NO 
UNDERGROUND SHELTER IS AVAILABLE TAKE COVER ON THE LOWEST FLOOR IN 
AN INTERIOR ROOM AWAY FROM WINDOWS.

&&

LAT...LON 3540 9370 3538 9378 3539 9379 3538 9380
      3530 9422 3551 9430 3576 9369
TIME...MOT...LOC 2309Z 255DEG 28KT 3544 9415

$$

4 follow-up statements

418 
WWUS54 KTSA 262324
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
624 PM CDT TUE APR 26 2011

ARC131-262333-
/O.CAN.KTSA.TO.W.0059.000000T0000Z-110427T0000Z/
SEBASTIAN AR-
624 PM CDT TUE APR 26 2011

...THE TORNADO WARNING FOR NORTHEASTERN SEBASTIAN COUNTY IS
CANCELLED...

LAT...LON 3540 9370 3538 9378 3539 9379 3538 9380
      3536 9407 3544 9407 3545 9410 3558 9413
      3576 9369
TIME...MOT...LOC 2323Z 255DEG 30KT 3548 9397

$$

ARC033-047-270000-
/O.CON.KTSA.TO.W.0059.000000T0000Z-110427T0000Z/
CRAWFORD AR-FRANKLIN AR-
624 PM CDT TUE APR 26 2011

...TORNADO WARNING REMAINS IN EFFECT UNTIL 700 PM CDT FOR FRANKLIN
AND EASTERN CRAWFORD COUNTIES...

AT 620 PM CDT...DOPPLER RADAR CONTINUED TO INDICATE A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING A TORNADO LOCATED NEAR MULBERRY...
MOVING EAST AT 35 MPH.

SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...TONEY...
LONELM...MEG...CRAVENS...JETHRO...OZARK...WATALULA...PARADISE...
DENNING...ALTUS...TURNERS BEND...BARNES...WIEDERKEHR VILLAGE...
CASS...ALIX...REDDING...MOUNTAIN TOP AND TAFT.

THIS INCLUDES INTERSTATE 40 BETWEEN MILE MARKERS 19 AND 43.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO A TORNADO...THIS STORM IS CAPABLE OF PRODUCING HAIL 
UP TO BASEBALL SIZE AND DESTRUCTIVE STRAIGHT LINE WINDS. IF NO 
UNDERGROUND SHELTER IS AVAILABLE TAKE COVER ON THE LOWEST FLOOR IN 
AN INTERIOR ROOM AWAY FROM WINDOWS.

&&

LAT...LON 3540 9370 3538 9378 3539 9379 3538 9380
      3536 9407 3544 9407 3545 9410 3558 9413
      3576 9369
TIME...MOT...LOC 2323Z 255DEG 30KT 3548 9397

$$

240 
WWUS54 KTSA 262334
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
634 PM CDT TUE APR 26 2011

ARC033-262344-
/O.CAN.KTSA.TO.W.0059.000000T0000Z-110427T0000Z/
CRAWFORD AR-
634 PM CDT TUE APR 26 2011

...THE TORNADO WARNING FOR EASTERN CRAWFORD COUNTY IS CANCELLED...

LAT...LON 3537 9395 3544 9397 3548 9397 3561 9399
      3576 9369 3540 9370 3538 9378 3539 9379
      3538 9380
TIME...MOT...LOC 2334Z 255DEG 30KT 3552 9385

$$

ARC047-270000-
/O.CON.KTSA.TO.W.0059.000000T0000Z-110427T0000Z/
FRANKLIN AR-
634 PM CDT TUE APR 26 2011

...TORNADO WARNING REMAINS IN EFFECT UNTIL 700 PM CDT FOR FRANKLIN
COUNTY...

AT 629 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 
WAS LOCATED NEAR CRAVENS...MOVING EAST AT 35 MPH.

SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...OZARK...
WATALULA...PARADISE...DENNING...ALTUS...TURNERS BEND...BARNES...
WIEDERKEHR VILLAGE...CASS...ALIX...REDDING...MOUNTAIN TOP AND TAFT.

THIS INCLUDES INTERSTATE 40 BETWEEN MILE MARKERS 27 AND 43.

LAT...LON 3537 9395 3544 9397 3548 9397 3561 9399
      3576 9369 3540 9370 3538 9378 3539 9379
      3538 9380
TIME...MOT...LOC 2334Z 255DEG 30KT 3552 9385

$$

109 
WWUS54 KTSA 262341
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
641 PM CDT TUE APR 26 2011

ARC047-270000-
/O.CON.KTSA.TO.W.0059.000000T0000Z-110427T0000Z/
FRANKLIN AR-
641 PM CDT TUE APR 26 2011

...TORNADO WARNING REMAINS IN EFFECT UNTIL 700 PM CDT FOR
NORTHEASTERN FRANKLIN COUNTY...

AT 638 PM CDT...DOPPLER RADAR CONTINUED TO INDICATE A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING A TORNADO LOCATED NEAR WATALULA...
MOVING EAST AT 35 MPH.

SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...REDDING...
MOUNTAIN TOP AND TAFT.

THIS INCLUDES INTERSTATE 40 BETWEEN MILE MARKERS 34 AND 43.

LAT...LON 3540 9375 3541 9378 3542 9379 3543 9381
      3546 9384 3551 9386 3564 9388 3576 9369
      3540 9370
TIME...MOT...LOC 2341Z 255DEG 31KT 3554 9376

$$

296 
WWUS54 KTSA 262357
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
657 PM CDT TUE APR 26 2011

ARC047-270008-
/O.EXP.KTSA.TO.W.0059.000000T0000Z-110427T0000Z/
FRANKLIN AR-
657 PM CDT TUE APR 26 2011

...THE TORNADO WARNING FOR NORTHEASTERN FRANKLIN COUNTY EXPIRES AT
700 PM CDT...

THE THUNDERSTORM HAS MOVED OUT OF THE WARNED AREA...THEREFORE THE
TORNADO WARNING WILL BE ALLOWED TO EXPIRE.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 10 PM.

LAT...LON 3540 9375 3541 9378 3542 9379 3543 9381
      3546 9384 3551 9386 3564 9388 3576 9369
      3540 9370
TIME...MOT...LOC 2358Z 255DEG 31KT 3558 9358

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 26, 11:58 AM CDT	Areal Flood Warning	TSA	Benton, Carroll, Crawford, Franklin, Madison, Sebastian and 1 more	12 hr
Apr 26, 5:11 PM CDT	Flash Flood Warning	TSA	Benton, Crawford, Washington	4 hr
Apr 26, 5:17 PM CDT	Special Weather Statement	TSA	Washington	43 min
Apr 26, 5:28 PM CDT	Severe Thunderstorm Warning	TSA	Crawford, Sebastian, Washington	47 min
Apr 26, 5:33 PM CDT	Severe Thunderstorm Warning	TSA	Benton	27 min
Apr 26, 5:37 PM CDT	Severe Thunderstorm Warning	TSA	Benton, Washington	38 min
Apr 26, 5:38 PM CDT	Tornado Warning	TSA	Crawford, Sebastian	37 min
Apr 26, 5:42 PM CDT	Flash Flood Warning	TSA	Benton, Carroll, Madison, Washington	4 hr
Apr 26, 5:43 PM CDT	Severe Thunderstorm Warning	TSA	Crawford, Washington	32 min
Apr 26, 5:50 PM CDT	Severe Thunderstorm Warning	TSA	Crawford, Madison, Washington	28 min
Apr 26, 5:56 PM CDT	Flash Flood Warning	TSA	Crawford, Franklin, Sebastian	4 hr
Apr 26, 6:00 PM CDT	Severe Thunderstorm Warning	TSA	Sebastian	30 min
Apr 26, 6:06 PM CDT	Severe Thunderstorm Warning	TSA	Sebastian	54 min
Apr 26, 6:11 PM CDT	Severe Thunderstorm Warning	TSA	Benton, Carroll	18 min
Apr 26, 6:22 PM CDT	Severe Thunderstorm Warning	TSA	Crawford, Franklin, Sebastian	38 min
Apr 26, 6:39 PM CDT	Severe Thunderstorm Warning	TSA	Benton	23 min

Nearby

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.