Alert archive / Arkansas / Tornado Watches in 2015

Tornado Watch 202

May 24, 201558 counties in Arkansas; 9 parishes in Louisiana; Bowie County, Cass County, Morris County, Texas

The Storm Prediction Center issued this tornado watch at May 24, 2015, 12:34 PM CDT for 58 counties in Arkansas; 9 parishes in Louisiana; Bowie County, Cass County, Morris County, Texas. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
May 24, 2015, 12:34 PM CDT (17:34 UTC)
Expired
May 24, 2015, 6:49 PM CDT
In force
6 hr
Issued by
the Storm Prediction Center
Largest hail expected
1 in
Strongest gust expected
60 kt
All 70 counties

Arkansas County, AR, Baxter County, AR, Boone County, AR, Bradley County, AR, Calhoun County, AR, Carroll County, AR, Clark County, AR, Cleburne County, AR, Cleveland County, AR, Columbia County, AR, Conway County, AR, Dallas County, AR, Desha County, AR, Drew County, AR, Faulkner County, AR, Franklin County, AR, Fulton County, AR, Garland County, AR, Grant County, AR, Hempstead County, AR, Hot Spring County, AR, Howard County, AR, Independence County, AR, Izard County, AR, Jackson County, AR, Jefferson County, AR, Johnson County, AR, Lafayette County, AR, Lincoln County, AR, Little River County, AR, Logan County, AR, Lonoke County, AR, Madison County, AR, Marion County, AR, Miller County, AR, Monroe County, AR, Montgomery County, AR, Nevada County, AR, Newton County, AR, Ouachita County, AR, Perry County, AR, Pike County, AR, Polk County, AR, Pope County, AR, Prairie County, AR, Pulaski County, AR, Saline County, AR, Scott County, AR, Searcy County, AR, Sebastian County, AR, Sevier County, AR, Sharp County, AR, Stone County, AR, Union County, AR, Van Buren County, AR, White County, AR, Woodruff County, AR, Yell County, AR, Bienville Parish, LA, Bossier Parish, LA, Caddo Parish, LA, Claiborne Parish, LA, Jackson Parish, LA, Lincoln Parish, LA, Ouachita Parish, LA, Union Parish, LA, Webster Parish, LA, Bowie County, TX, Cass County, TX, Morris County, TX

The radar

The Little Rock radar (KLZK), 80 km from the middle of the area, began a volume at 17:33 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
30%
Ten or more severe wind reports
30%
One or more gusts of 65 knots or more
10%
Ten or more severe hail reports
20%
One or more hailstones of 2 inches or more
5%
Six or more combined severe hail and wind reports
70%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
May 24, 12:49 PM CDTSevere Thunderstorm WarningSHVLittle River, Miller56 min
May 24, 1:36 PM CDTSevere Thunderstorm WarningSHVClaiborne, Lincoln, Union39 min
May 24, 2:00 PM CDTSevere Thunderstorm WarningSHVColumbia, Union30 min
May 24, 2:23 PM CDTFlash Flood WarningLZKPolk, Scott3 hr
May 24, 2:29 PM CDTSevere Thunderstorm WarningLZKCalhoun, Dallas, Ouachita46 min
May 24, 2:39 PM CDTSevere Thunderstorm WarningLZKClark, Garland, Hot Spring, Logan, Montgomery, Perry and 1 more51 min
May 24, 2:39 PM CDTSevere Thunderstorm WarningSHVUnion66 min
May 24, 2:51 PM CDTSevere Thunderstorm WarningLZKClark, Dallas, Garland, Hot Spring, Ouachita54 min
May 24, 2:56 PM CDTSevere Thunderstorm WarningLZKJohnson, Logan, Montgomery, Polk, Scott, Yell49 min
May 24, 3:12 PM CDTSevere Thunderstorm WarningLZKFulton, Izard, Sharp48 min
May 24, 3:13 PM CDTSevere Thunderstorm WarningSHVCaldwell, Ouachita, Union29 min
May 24, 3:15 PM CDTSevere Thunderstorm WarningLZKCleveland, Dallas, Grant, Hot Spring, Jefferson, Saline30 min
May 24, 3:19 PM CDTSevere Thunderstorm WarningLZKBradley, Calhoun, Cleveland, Dallas, Drew, Jefferson and 1 more26 min
May 24, 3:19 PM CDTSevere Thunderstorm WarningLZKBaxter, Marion, Searcy26 min
May 24, 3:21 PM CDTTornado WarningLZKBaxter, Marion, Searcy24 min
May 24, 3:25 PM CDTSevere Thunderstorm WarningLZKGarland, Grant, Hot Spring, Perry, Pulaski, Saline50 min
May 24, 3:30 PM CDTSevere Thunderstorm WarningLZKJohnson, Logan, Perry, Pope, Yell60 min
May 24, 3:41 PM CDTSevere Thunderstorm WarningLZKGrant, Jefferson, Lonoke, Pulaski, Saline49 min
May 24, 3:45 PM CDTSevere Thunderstorm WarningLZKBradley, Cleveland, Drew, Grant, Jefferson, Lincoln and 1 more45 min
May 24, 3:55 PM CDTSevere Thunderstorm WarningLZKBaxter35 min
May 24, 4:02 PM CDTSevere Thunderstorm WarningLZKConway, Faulkner, Perry, Pope, Pulaski, Saline and 1 more43 min
May 24, 4:06 PM CDTSevere Thunderstorm WarningLZKFaulkner, Lonoke, Pulaski, Saline, White24 min
May 24, 4:28 PM CDTSevere Thunderstorm WarningLZKCleburne, Faulkner, Lonoke, Prairie, Pulaski, White47 min
May 24, 4:30 PM CDTSevere Thunderstorm WarningLZKArkansas, Cleveland, Jefferson, Lincoln, Lonoke, Prairie and 1 more60 min
May 24, 4:35 PM CDTSevere Thunderstorm WarningLZKArkansas, Desha, Drew, Lincoln55 min
May 24, 4:45 PM CDTSevere Thunderstorm WarningLZKCleburne, Faulkner, Searcy, Stone, Van Buren60 min
May 24, 5:04 PM CDTSevere Thunderstorm WarningLZKCleburne, Faulkner, Independence, Izard, Jackson, Lonoke and 3 more41 min
May 24, 5:20 PM CDTSevere Thunderstorm WarningLZKBaxter, Fulton, Izard, Marion, Searcy, Stone40 min
May 24, 5:26 PM CDTSevere Thunderstorm WarningLZKArkansas, Desha, Monroe49 min
May 24, 5:29 PM CDTTornado WarningLZKArkansas, Desha31 min
May 24, 5:37 PM CDTSevere Thunderstorm WarningLZKCleburne, Fulton, Independence, Izard, Jackson, Sharp and 3 more38 min
May 24, 5:52 PM CDTSevere Thunderstorm WarningLZKArkansas, Monroe, Prairie53 min
May 24, 5:54 PM CDTTornado WarningLZKFulton, Sharp21 min
May 24, 5:59 PM CDTSevere Thunderstorm WarningLZKBaxter, Fulton, Izard31 min
May 24, 6:11 PM CDTSevere Thunderstorm WarningLZKFulton, Independence, Izard, Jackson, Sharp34 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

Springfield, MO (KSGF), launched 12:00Z, 5.6 hours before the alert went out and 230 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, Springfield, MO at 12:00Z on 2015-05-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 183 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, Springfield, MO at 12:00Z on 2015-05-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 259 square meters per square second.193958Sfc1 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
183 J/kg
Mixed-layer CIN
-35 J/kg
Mixed-layer LCL
578 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
259 m²/s²
0-3 km storm-relative helicity
254 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.

878 
WWUS20 KWNS 241731
SEL2  
SPC WW 241731
ARZ000-LAZ000-TXZ000-250000-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 202
NWS STORM PREDICTION CENTER NORMAN OK
1230 PM CDT SUN MAY 24 2015

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* TORNADO WATCH FOR PORTIONS OF 
  MUCH OF ARKANSAS
  NORTHERN LOUISIANA
  FAR NORTHEAST TEXAS

* EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 1230 PM UNTIL
  700 PM CDT.

* PRIMARY THREATS INCLUDE...
  A FEW TORNADOES AND A COUPLE INTENSE TORNADOES POSSIBLE
  ISOLATED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE
  ISOLATED LARGE HAIL EVENTS TO 1 INCH IN DIAMETER POSSIBLE

SUMMARY...STRENGTHENING THUNDERSTORMS WILL CONTINUE MOVING
NORTH-NORTHEASTWARD ACROSS THE ARKLATEX REGION AND LATER ACROSS MUCH
OF ARKANSAS...WITH SEVERE RISK GRADUALLY INCREASING WITH TIME. 
POTENTIAL FOR DAMAGING WINDS AND A FEW TORNADOES WILL BE THE PRIMARY
RISKS THIS AFTERNOON.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 85 STATUTE
MILES EAST AND WEST OF A LINE FROM 20 MILES NORTH NORTHWEST OF
FLIPPIN ARKANSAS TO 50 MILES SOUTH SOUTHWEST OF EL DORADO
ARKANSAS.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2).

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.

&&

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500.
MEAN STORM MOTION VECTOR 21035.


...GOSS

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 23, 10:49 PM CDTMesoscale DiscussionSPCBenton, Crawford, Franklin, Scott, Sebastian, Washington86 min
May 24, 12:05 PM CDTMesoscale DiscussionSPCCalhoun, Clark, Columbia, Dallas, Garland, Grant and 18 more115 min
May 24, 1:49 PM CDTTornado WatchSPCAshley, Chicot8 hr
May 24, 3:31 PM CDTMesoscale DiscussionSPCAshley, Baxter, Boone, Bradley, Calhoun, Clark and 31 more89 min
May 24, 4:14 PM CDTTornado WatchSPCClay, Craighead, Crittenden, Cross, Greene, Lawrence and 6 more8 hr
May 24, 6:04 PM CDTMesoscale DiscussionSPCClay, Craighead, Crittenden, Cross, Greene, Lee and 4 more116 min
May 24, 5:03 PM CDTMesoscale DiscussionSPCAscension, Assumption, Avoyelles, Catahoula, Concordia, East Baton Rouge and 30 more117 min
May 23, 8:39 PM CDTMesoscale DiscussionSPCAtascosa, Bastrop, Bee, Bexar, Blanco, Caldwell and 18 more2 hr
May 23, 8:57 PM CDTMesoscale DiscussionSPCArcher, Baylor, Clay, Cooke, Denton, Fannin and 7 more93 min
May 23, 9:46 PM CDTMesoscale DiscussionSPCAnderson, Austin, Bell, Bosque, Brazos, Burleson and 28 more89 min
May 23, 10:00 PM CDTTornado WatchSPCAnderson, Austin, Bell, Bosque, Brazos, Burleson and 34 more6 hr
May 23, 10:31 PM CDTSevere Thunderstorm WatchSPCAransas, Brooks, Cameron, Hidalgo, Jim Hogg, Jim Wells and 8 more5 hr
May 23, 11:32 PM CDTMesoscale DiscussionSPCAnderson, Atascosa, Austin, Bell, Brazos, Burleson and 36 more88 min
May 23, 11:52 PM CDTMesoscale DiscussionSPCBrooks, Cameron, Duval, Hidalgo, Jim Wells, Kenedy and 3 more83 min
May 23, 11:59 PM CDTMesoscale DiscussionSPCBandera, Gillespie, Kendall, Kerr, Kinney, Real and 2 more91 min
May 24, 2:12 AM CDTMesoscale DiscussionSPCAransas, Brazoria, Calhoun, Cameron, Fort Bend, Jackson and 4 more93 min
May 24, 3:16 AM CDTMesoscale DiscussionSPCCollin, Fannin, Grayson59 min
May 24, 3:15 PM CDTMesoscale DiscussionSPCArmstrong, Briscoe, Callahan, Childress, Coleman, Collingsworth and 26 more90 min

Nearby

Tornado Watches in Arkansas, 2015Tornado Watches in Louisiana, 2015Tornado Watches in Texas, 2015Every tornado watch in 2015

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.