Alert archive / Arkansas / Tornado Watches in 2014

Tornado Watch 534

October 13, 20146 states

The Storm Prediction Center issued this tornado watch at Oct 13, 2014, 7:08 AM CDT for 6 states. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
Oct 13, 2014, 7:08 AM CDT (12:08 UTC)
Expired
Oct 13, 2014, 2:00 PM CDT
In force
7 hr
Issued by
the Storm Prediction Center
Largest hail expected
1 in
Strongest gust expected
65 kt
All 99 counties

Arkansas County, AR, Ashley County, AR, Baxter County, AR, Bradley County, AR, Calhoun County, AR, Chicot County, AR, Clark County, AR, Clay County, AR, Cleburne County, AR, Cleveland County, AR, Conway County, AR, Craighead County, AR, Crittenden County, AR, Cross County, AR, Dallas County, AR, Desha County, AR, Drew County, AR, Faulkner County, AR, Fulton County, AR, Garland County, AR, Grant County, AR, Greene County, AR, Hot Spring County, AR, Independence County, AR, Izard County, AR, Jackson County, AR, Jefferson County, AR, Lawrence County, AR, Lee County, AR, Lincoln County, AR, Lonoke County, AR, Marion County, AR, Mississippi County, AR, Monroe County, AR, Ouachita County, AR, Perry County, AR, Phillips County, AR, Poinsett County, AR, Prairie County, AR, Pulaski County, AR, Randolph County, AR, Saline County, AR, Searcy County, AR, Sharp County, AR, St. Francis County, AR, Stone County, AR, Union County, AR, Van Buren County, AR, White County, AR, Woodruff County, AR, Bienville Parish, LA, Caldwell Parish, LA, Catahoula Parish, LA, Claiborne Parish, LA, Concordia Parish, LA, East Carroll Parish, LA, Franklin Parish, LA, Grant Parish, LA, Jackson Parish, LA, LaSalle Parish, LA, Lincoln Parish, LA, Madison Parish, LA, Morehouse Parish, LA, Natchitoches Parish, LA, Ouachita Parish, LA, Red River Parish, LA, Richland Parish, LA, Sabine Parish, LA, Tensas Parish, LA, Union Parish, LA, West Carroll Parish, LA, Winn Parish, LA, Dunklin County, MO, Pemiscot County, MO, Adams County, MS, Bolivar County, MS, Claiborne County, MS, Coahoma County, MS, DeSoto County, MS, Humphreys County, MS, Issaquena County, MS, Jefferson County, MS, Leflore County, MS, Panola County, MS, Quitman County, MS, Sharkey County, MS, Sunflower County, MS, Tallahatchie County, MS, Tate County, MS, Tunica County, MS, Warren County, MS, Washington County, MS, Dyer County, TN, Lake County, TN, Lauderdale County, TN, Obion County, TN, Shelby County, TN, Tipton County, TN, Sabine County, TX

The radar

The Little Rock radar (KLZK), 168 km from the middle of the area, began a volume at 12:08 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 SPC expected

The probabilities SPC published with the watch, for the watch area over its life.

Two or more tornadoes
50%
One or more EF2 to EF5 tornadoes
20%
Ten or more severe wind reports
50%
One or more gusts of 65 knots or more
50%
Ten or more severe hail reports
5%
One or more hailstones of 2 inches or more
5%
Six or more combined severe hail and wind reports
90%

Warnings issued inside it

60 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Oct 13, 7:21 AM CDTSevere Thunderstorm WarningLZKBaxter, Boone, Marion, Newton, Pope, Searcy and 1 more39 min
Oct 13, 7:32 AM CDTSevere Thunderstorm WarningSHVColumbia, Union43 min
Oct 13, 7:44 AM CDTSevere Thunderstorm WarningLZKCleburne, Conway, Faulkner, Perry, Van Buren46 min
Oct 13, 7:50 AM CDTTornado WarningLZKOuachita8 min
Oct 13, 7:53 AM CDTSevere Thunderstorm WarningLZKCalhoun, Clark, Dallas, Ouachita37 min
Oct 13, 8:37 AM CDTSevere Thunderstorm WarningLZKCleveland, Dallas, Grant, Jefferson38 min
Oct 13, 8:46 AM CDTTornado WarningLZKCleveland, Dallas, Grant, Jefferson29 min
Oct 13, 8:54 AM CDTSevere Thunderstorm WarningSHVDe Soto, Red River51 min
Oct 13, 9:01 AM CDTTornado WarningSHVDe Soto, Red River29 min
Oct 13, 9:21 AM CDTSevere Thunderstorm WarningSHVDe Soto, Sabine24 min
Oct 13, 9:30 AM CDTTornado WarningLZKLonoke, Prairie30 min
Oct 13, 9:35 AM CDTSevere Thunderstorm WarningSHVBienville, Claiborne, Red River, Webster40 min
Oct 13, 9:52 AM CDTSevere Thunderstorm WarningLZKLonoke, Monroe, Prairie, White, Woodruff53 min
Oct 13, 10:09 AM CDTSevere Thunderstorm WarningSHVBienville, Jackson, Lincoln, Natchitoches, Red River, Winn66 min
Oct 13, 10:26 AM CDTSevere Thunderstorm WarningSHVNatchitoches, Sabine, Winn64 min
Oct 13, 10:41 AM CDTSevere Thunderstorm WarningSHVUnion64 min
Oct 13, 10:45 AM CDTSevere Thunderstorm WarningSHVCaldwell, Jackson, Lincoln, Ouachita, Union, Winn60 min
Oct 13, 10:54 AM CDTTornado WarningLZKArkansas, Desha21 min
Oct 13, 10:54 AM CDTSevere Thunderstorm WarningSHVSabine36 min
Oct 13, 11:01 AM CDTSevere Thunderstorm WarningJANAshley74 min
Oct 13, 11:04 AM CDTSevere Thunderstorm WarningSHVGrant, Natchitoches, Winn26 min
Oct 13, 11:13 AM CDTTornado WarningLZKArkansas27 min
Oct 13, 11:13 AM CDTSevere Thunderstorm WarningSHVGrant, Natchitoches, Winn32 min
Oct 13, 11:14 AM CDTTornado WarningLZKArkansas, Desha26 min
Oct 13, 11:14 AM CDTTornado WarningLZKDesha27 min
Oct 13, 11:25 AM CDTTornado WarningSHVOuachita20 min
Oct 13, 11:27 AM CDTSevere Thunderstorm WarningJANChicot26 min
Oct 13, 11:27 AM CDTSevere Thunderstorm WarningSHVCaldwell, Ouachita, Union, Winn63 min
Oct 13, 11:30 AM CDTTornado WarningJANMorehouse45 min
Oct 13, 11:34 AM CDTSevere Thunderstorm WarningJANFranklin, Richland41 min
Oct 13, 11:41 AM CDTSevere Thunderstorm WarningJANBolivar32 min
Oct 13, 11:48 AM CDTSevere Thunderstorm WarningJANBolivar42 min
Oct 13, 11:49 AM CDTSevere Thunderstorm WarningSHVCaldwell, Grant, LaSalle, Natchitoches, Winn56 min
Oct 13, 11:50 AM CDTTornado WarningJANBolivar22 min
Oct 13, 11:54 AM CDTTornado WarningLZKDesha22 min
Oct 13, 11:56 AM CDTSevere Thunderstorm WarningMEGPhillips49 min
Oct 13, 12:03 PM CDTSevere Thunderstorm WarningJANChicot46 min
Oct 13, 12:04 PM CDTSevere Thunderstorm WarningMEGCrittenden, Cross, Lee, Phillips, St. Francis41 min
Oct 13, 12:07 PM CDTTornado WarningJANAshley, Chicot53 min
Oct 13, 12:09 PM CDTTornado WarningJANMorehouse, Richland, West Carroll66 min
Oct 13, 12:12 PM CDTSevere Thunderstorm WarningJANEast Carroll, Franklin, Madison, Richland, Tensas48 min
Oct 13, 12:15 PM CDTTornado WarningJANChicot33 min
Oct 13, 12:37 PM CDTSevere Thunderstorm WarningMEGClay, Greene23 min
Oct 13, 12:37 PM CDTSevere Thunderstorm WarningJANBolivar53 min
Oct 13, 12:41 PM CDTTornado WarningJANChicot64 min
Oct 13, 12:42 PM CDTTornado WarningJANEast Carroll48 min
Oct 13, 12:43 PM CDTSevere Thunderstorm WarningMEGCraighead, Crittenden, Cross, Mississippi, Poinsett, St. Francis47 min
Oct 13, 12:46 PM CDTSevere Thunderstorm WarningJANBolivar44 min
Oct 13, 12:47 PM CDTTornado WarningMEGClay17 min
Oct 13, 12:47 PM CDTSevere Thunderstorm WarningJANMadison, Tensas58 min
Oct 13, 12:52 PM CDTSevere Thunderstorm WarningMEGCrittenden, Lee, Phillips, St. Francis38 min
Oct 13, 12:57 PM CDTSevere Thunderstorm WarningMEGClay, Craighead, Greene48 min
Oct 13, 1:14 PM CDTTornado WarningJANIssaquena, Sharkey61 min
Oct 13, 1:18 PM CDTSevere Thunderstorm WarningJANMadison, Tensas42 min
Oct 13, 1:20 PM CDTSevere Thunderstorm WarningJANHumphreys, Sharkey, Sunflower, Washington55 min
Oct 13, 1:28 PM CDTSevere Thunderstorm WarningJANBolivar, Sunflower62 min
Oct 13, 1:32 PM CDTSevere Thunderstorm WarningMEGMississippi28 min
Oct 13, 1:33 PM CDTSevere Thunderstorm WarningJANTensas42 min
Oct 13, 1:36 PM CDTTornado WarningJANHumphreys, Yazoo39 min
Oct 13, 1:58 PM CDTSevere Thunderstorm WarningMEGPemiscot32 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Shreveport, LA (KBAD), launched 12:00Z, 0.1 hours before the alert went out and 179 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, Shreveport, LA at 12:00Z on 2014-10-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1752 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, Shreveport, LA at 12:00Z on 2014-10-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 300 square meters per square second.1939587897Sfc1 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
1752 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
620 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
300 m²/s²
0-3 km storm-relative helicity
372 m²/s²
Significant tornado parameter
2.8
Supercell composite
17.4

Open this sounding in Storm Lab

The text

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

354 
WWUS20 KWNS 131209
SEL4  
SPC WW 131209
ARZ000-LAZ000-MOZ000-MSZ000-TNZ000-TXZ000-131900-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 534
NWS STORM PREDICTION CENTER NORMAN OK
710 AM CDT MON OCT 13 2014

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* TORNADO WATCH FOR PORTIONS OF 
  CENTRAL AND EASTERN ARKANSAS
  NORTHERN LOUISIANA
  MISSOURI BOOTHEEL
  WESTERN MISSISSIPPI
  WESTERN TENNESSEE
  SMALL PART OF EAST TEXAS

* EFFECTIVE THIS MONDAY MORNING AND AFTERNOON FROM 710 AM UNTIL
  200 PM CDT.

* PRIMARY THREATS INCLUDE...
  A FEW TORNADOES POSSIBLE
  SCATTERED DAMAGING WINDS AND ISOLATED SIGNIFICANT GUSTS TO 75
    MPH POSSIBLE

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 85 STATUTE
MILES EAST AND WEST OF A LINE FROM 25 MILES WEST SOUTHWEST OF
ALEXANDRIA LOUISIANA TO 30 MILES NORTHEAST OF WALNUT RIDGE
ARKANSAS.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU4).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
AND POSSIBLE WARNINGS.

&&

OTHER WATCH INFORMATION...CONTINUE...WW 532...WW 533...

DISCUSSION...QLCS FCST TO INCREASE IN ORGANIZATION AND SEVERITY
THROUGH EARLY AFTN AS IT MOVES INTO DESTABILIZING AIR MASS NEAR MS
RIVER.  FAVORABLE LOW-LEVEL SHEAR ALSO WILL EXIST IN INFLOW REGION
TO SUPPORT SPORADIC MESOVORTICES WITH LOCALLY ENHANCED WIND RISK AND
A FEW TORNADOES POSSIBLE.  ISOLATED SUPERCELLS CANNOT BE RULED OUT
IN FOREGOING WARM SECTOR AS WELL...ESPECIALLY AS DIABATIC HEATING
BOOSTS BUOYANCY DURING MIDDAY.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 65 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500.
MEAN STORM MOTION VECTOR 26035.


...EDWARDS

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 12, 8:04 PM CDTMesoscale DiscussionSPCArkansas, Ashley, Bradley, Calhoun, Chicot, Cleveland and 13 more86 min
Oct 13, 12:00 AM CDTMesoscale DiscussionSPCBenton, Crawford, Sebastian, Washington90 min
Oct 13, 12:55 AM CDTSevere Thunderstorm WatchSPCBaxter, Benton, Boone, Carroll, Clark, Cleburne and 27 more7 hr
Oct 13, 1:59 AM CDTMesoscale DiscussionSPCBaxter, Benton, Boone, Carroll, Clark, Cleburne and 28 more91 min
Oct 13, 2:43 AM CDTMesoscale DiscussionSPCColumbia, Hempstead, Howard, Lafayette, Little River, Miller and 2 more92 min
Oct 13, 3:22 AM CDTTornado WatchSPCColumbia, Hempstead, Howard, Lafayette, Little River, Miller and 2 more8 hr
Oct 13, 6:34 AM CDTMesoscale DiscussionSPCArkansas, Ashley, Bradley, Calhoun, Chicot, Clark and 36 more86 min
Oct 13, 6:56 AM CDTMesoscale DiscussionSPCBaxter, Boone, Clark, Cleburne, Conway, Dallas and 17 more64 min
Oct 13, 10:20 AM CDTMesoscale DiscussionSPCArkansas, Ashley, Bradley, Chicot, Clay, Craighead and 22 more115 min
Oct 13, 11:52 AM CDTMesoscale DiscussionSPCChicot, Clay, Craighead, Crittenden, Cross, Desha and 6 more113 min
Oct 13, 12:57 PM CDTTornado WatchSPCChicot, Clay, Crittenden, Mississippi7 hr
Oct 13, 11:10 AM CDTTornado WatchSPCAcadia, Allen, Avoyelles, Beauregard, Calcasieu, Cameron and 10 more8 hr
Oct 13, 1:39 PM CDTTornado WatchSPCAscension, Assumption, East Baton Rouge, East Feliciana, Iberville, Jefferson and 16 more8 hr
Oct 13, 5:45 PM CDTMesoscale DiscussionSPCJefferson, Lafourche, Orleans, Saint Charles, Saint James, Saint John the Baptist and 4 more90 min
Oct 12, 11:46 PM CDTMesoscale DiscussionSPCCalhoun, Carroll, Chickasaw, Clay, Grenada, Itawamba and 10 more89 min
Oct 13, 2:22 PM CDTMesoscale DiscussionSPCAlcorn, Attala, Benton, Calhoun, Carroll, Chickasaw and 32 more113 min
Oct 13, 5:27 PM CDTMesoscale DiscussionSPCItawamba, Monroe, Tishomingo63 min
Oct 13, 8:05 AM CDTMesoscale DiscussionSPCBollinger, Butler, Cape Girardeau, Carter, Howell, Iron and 13 more115 min
Oct 13, 10:29 AM CDTTornado WatchSPCBollinger, Butler, Cape Girardeau, Carter, Franklin, Iron and 16 more8 hr
Oct 13, 11:59 AM CDTMesoscale DiscussionSPCBollinger, Butler, Madison, Perry, Sainte Genevieve, Saint Francois and 2 more61 min
Oct 13, 1:33 PM CDTMesoscale DiscussionSPCBollinger, Cape Girardeau, Mississippi, New Madrid, Perry, Scott and 1 more57 min
Oct 13, 3:37 PM CDTTornado WatchSPCBedford, Cannon, Cheatham, Clay, Coffee, Cumberland and 35 more8 hr
Oct 12, 7:45 PM CDTSevere Thunderstorm WatchSPCArcher, Baylor, Borden, Brown, Callahan, Clay and 31 more7 hr
Oct 12, 9:47 PM CDTMesoscale DiscussionSPCArcher, Baylor, Clay, Fisher, Foard, Haskell and 10 more58 min
Oct 12, 10:17 PM CDTMesoscale DiscussionSPCCollin, Cooke, Dallas, Delta, Denton, Ellis and 20 more58 min
Oct 12, 11:08 PM CDTTornado WatchSPCBosque, Collin, Comanche, Cooke, Coryell, Dallas and 29 more7 hr

Nearby

Tornado Watches in Arkansas, 2014Tornado Watches in Louisiana, 2014Tornado Watches in Mississippi, 2014Every tornado watch in 2014

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.