Alert archive / Texas / Severe Thunderstorm Watches in 2016

Severe Thunderstorm Watch 113

April 26, 201632 counties in Arkansas; 19 counties in Oklahoma; 80 counties in Texas

The Storm Prediction Center issued this severe thunderstorm watch at Apr 26, 2016, 10:21 PM CDT for 32 counties in Arkansas; 19 counties in Oklahoma; 80 counties in Texas. It was in force for 9 hr.

The area

The outline as issued.

The facts

Issued
Apr 26, 2016, 10:21 PM CDT (03:21 UTC)
Expired
Apr 27, 2016, 7:00 AM CDT
In force
9 hr
Issued by
the Storm Prediction Center
Largest hail expected
2 in
Strongest gust expected
60 kt
All 131 counties

Benton County, AR, Boone County, AR, Carroll County, AR, Clark County, AR, Columbia County, AR, Conway County, AR, Crawford County, AR, Franklin County, AR, Garland County, AR, Hempstead County, AR, Hot Spring County, AR, Howard County, AR, Johnson County, AR, Lafayette County, AR, Little River County, AR, Logan County, AR, Madison County, AR, Marion County, AR, Miller County, AR, Montgomery County, AR, Nevada County, AR, Newton County, AR, Perry County, AR, Pike County, AR, Polk County, AR, Pope County, AR, Scott County, AR, Searcy County, AR, Sebastian County, AR, Sevier County, AR, Washington County, AR, Yell County, AR, Adair County, OK, Cherokee County, OK, Choctaw County, OK, Craig County, OK, Delaware County, OK, Haskell County, OK, Latimer County, OK, LeFlore County, OK, Mayes County, OK, McCurtain County, OK, McIntosh County, OK, Muskogee County, OK, Nowata County, OK, Ottawa County, OK, Pittsburg County, OK, Pushmataha County, OK, Rogers County, OK, Sequoyah County, OK, Wagoner County, OK, Anderson County, TX, Angelina County, TX, Bandera County, TX, Bastrop County, TX, Bell County, TX, Blanco County, TX, Bowie County, TX, Brazos County, TX, Burleson County, TX, Burnet County, TX, Caldwell County, TX, Camp County, TX, Cass County, TX, Chambers County, TX, Cherokee County, TX, Comal County, TX, Coryell County, TX, Delta County, TX, Edwards County, TX, Ellis County, TX, Falls County, TX, Fannin County, TX, Franklin County, TX, Freestone County, TX, Galveston County, TX, Gillespie County, TX, Gregg County, TX, Grimes County, TX, Harris County, TX, Harrison County, TX, Hays County, TX, Henderson County, TX, Hill County, TX, Hopkins County, TX, Houston County, TX, Hunt County, TX, Kaufman County, TX, Kendall County, TX, Kerr County, TX, Kimble County, TX, Lamar County, TX, Lampasas County, TX, Lee County, TX, Leon County, TX, Liberty County, TX, Limestone County, TX, Llano County, TX, Madison County, TX, Marion County, TX, Mason County, TX, McLennan County, TX, Menard County, TX, Milam County, TX, Montgomery County, TX, Morris County, TX, Nacogdoches County, TX, Navarro County, TX, Panola County, TX, Polk County, TX, Rains County, TX, Real County, TX, Red River County, TX, Robertson County, TX, Rockwall County, TX, Rusk County, TX, Sabine County, TX, San Augustine County, TX, San Jacinto County, TX, San Saba County, TX, Shelby County, TX, Smith County, TX, Sutton County, TX, Titus County, TX, Travis County, TX, Trinity County, TX, Upshur County, TX, Van Zandt County, TX, Walker County, TX, Williamson County, TX, Wood County, TX

The radar

The Western Arkansas radar (KSRX), 146 km from the middle of the area, began a volume at 03:24 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
20%
One or more EF2 to EF5 tornadoes
10%
Ten or more severe wind reports
50%
One or more gusts of 65 knots or more
20%
Ten or more severe hail reports
40%
One or more hailstones of 2 inches or more
30%
Six or more combined severe hail and wind reports
90%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Apr 26, 10:21 PM CDTSevere Thunderstorm WarningTSAMcIntosh, Muskogee, Okfuskee, Okmulgee, Pittsburg39 min
Apr 26, 10:26 PM CDTTornado WarningTSARogers, Tulsa, Wagoner34 min
Apr 26, 10:51 PM CDTSevere Thunderstorm WarningTSAChoctaw, Latimer, Pittsburg, Pushmataha39 min
Apr 26, 10:51 PM CDTSevere Thunderstorm WarningFWDLampasas, Mills54 min
Apr 26, 10:56 PM CDTSevere Thunderstorm WarningTSACherokee, Haskell, Latimer, McIntosh, Muskogee, Okmulgee and 3 more49 min
Apr 26, 10:57 PM CDTSevere Thunderstorm WarningTSACherokee, Craig, Mayes, Nowata, Rogers, Wagoner33 min
Apr 26, 11:01 PM CDTTornado WarningTSACherokee, Mayes, Rogers, Wagoner44 min
Apr 26, 11:07 PM CDTSevere Thunderstorm WarningSJTCrockett, Schleicher, Sutton53 min
Apr 26, 11:13 PM CDTTornado WarningTSACraig32 min
Apr 26, 11:14 PM CDTTornado WarningTSACherokee, McIntosh, Muskogee, Sequoyah31 min
Apr 26, 11:15 PM CDTSevere Thunderstorm WarningFWDCoryell, Hamilton, Lampasas60 min
Apr 26, 11:24 PM CDTSevere Thunderstorm WarningTSACraig, Delaware, Mayes, Nowata, Ottawa, Rogers51 min
Apr 26, 11:27 PM CDTSevere Thunderstorm WarningTSAChoctaw, Latimer, LeFlore, Pushmataha48 min
Apr 26, 11:29 PM CDTSevere Thunderstorm WarningTSAAdair, Cherokee, McIntosh, Mayes, Muskogee, Rogers and 2 more46 min
Apr 26, 11:33 PM CDTSevere Thunderstorm WarningEWXEdwards, Val Verde72 min
Apr 26, 11:35 PM CDTTornado WarningTSAAdair, Cherokee, Delaware, Mayes25 min
Apr 26, 11:38 PM CDTSevere Thunderstorm WarningSHVMcCurtain52 min
Apr 26, 11:43 PM CDTSevere Thunderstorm WarningTSAHaskell, Latimer, LeFlore, Muskogee, Pushmataha, Sequoyah32 min
Apr 26, 11:44 PM CDTTornado WarningTSAAdair, Cherokee, Sequoyah31 min
Apr 26, 11:48 PM CDTSevere Thunderstorm WarningSJTKimble, Menard, Schleicher, Sutton42 min
Apr 27, 12:01 AM CDTTornado WarningTSADelaware14 min
Apr 27, 12:06 AM CDTSevere Thunderstorm WarningTSABenton, Washington54 min
Apr 27, 12:13 AM CDTTornado WarningTSAWashington32 min
Apr 27, 12:13 AM CDTSevere Thunderstorm WarningSJTKimble, Mason, Menard62 min
Apr 27, 12:16 AM CDTSevere Thunderstorm WarningTSACrawford, Franklin, Sebastian, Washington59 min
Apr 27, 12:18 AM CDTSevere Thunderstorm WarningTSADelaware, Ottawa17 min
Apr 27, 12:21 AM CDTSevere Thunderstorm WarningEWXEdwards, Gillespie, Kerr, Real, Val Verde69 min
Apr 27, 12:25 AM CDTSevere Thunderstorm WarningEWXBurnet50 min
Apr 27, 12:26 AM CDTSevere Thunderstorm WarningFWDBell, Coryell, Lampasas64 min
Apr 27, 12:31 AM CDTSevere Thunderstorm WarningLZKLogan, Montgomery, Pike, Polk, Scott59 min
Apr 27, 12:39 AM CDTSevere Thunderstorm WarningFWDHenderson, Rains, Van Zandt47 min
Apr 27, 12:40 AM CDTTornado WarningTSABenton35 min
Apr 27, 12:41 AM CDTTornado WarningTSAMadison, Washington34 min
Apr 27, 12:43 AM CDTSevere Thunderstorm WarningSHVCamp, Cherokee, Franklin, Gregg, Morris, Smith and 3 more62 min
Apr 27, 12:57 AM CDTSevere Thunderstorm WarningEWXGillespie, Llano63 min
Apr 27, 1:00 AM CDTSevere Thunderstorm WarningTSABenton, Carroll, Madison, Washington60 min
Apr 27, 1:08 AM CDTTornado WarningTSACrawford, Franklin, Sebastian37 min
Apr 27, 1:12 AM CDTTornado WarningTSACarroll, Madison, Washington48 min
Apr 27, 1:16 AM CDTSevere Thunderstorm WarningTSACrawford, Franklin, Sebastian, Washington44 min
Apr 27, 1:23 AM CDTTornado WarningTSAFranklin37 min
Apr 27, 1:23 AM CDTSevere Thunderstorm WarningEWXBlanco, Burnet, Gillespie67 min
Apr 27, 1:25 AM CDTSevere Thunderstorm WarningLZKBoone, Johnson, Logan, Newton65 min
Apr 27, 1:33 AM CDTSevere Thunderstorm WarningLZKLogan, Scott, Yell57 min
Apr 27, 1:41 AM CDTSevere Thunderstorm WarningEWXKendall, Kerr64 min
Apr 27, 1:54 AM CDTSevere Thunderstorm WarningTSACarroll, Franklin, Madison36 min
Apr 27, 2:04 AM CDTSevere Thunderstorm WarningEWXBastrop, Bexar, Caldwell, Comal, Guadalupe, Hays and 2 more56 min
Apr 27, 3:42 AM CDTSevere Thunderstorm WarningHGXHouston, Trinity, Walker33 min
Apr 27, 3:51 AM CDTSevere Thunderstorm WarningHGXBrazos, Grimes, Houston, Madison, Walker39 min
Apr 27, 3:53 AM CDTSevere Thunderstorm WarningSHVAngelina, Cherokee, Nacogdoches, Panola, Rusk, San Augustine and 1 more37 min
Apr 27, 4:25 AM CDTSevere Thunderstorm WarningHGXAustin, Brazoria, Fort Bend, Harris, Liberty, Montgomery and 4 more65 min
Apr 27, 4:26 AM CDTSevere Thunderstorm WarningHGXHouston, Madison, Polk, San Jacinto, Trinity, Walker49 min
Apr 27, 4:29 AM CDTSevere Thunderstorm WarningHGXHouston, Polk, Trinity46 min
Apr 27, 4:32 AM CDTSevere Thunderstorm WarningSHVAngelina, Nacogdoches, Panola, Rusk, San Augustine, Shelby58 min
Apr 27, 4:36 AM CDTTornado WarningHGXHarris, Montgomery24 min
Apr 27, 4:50 AM CDTTornado WarningHGXLiberty, Montgomery, San Jacinto25 min
Apr 27, 5:12 AM CDTSevere Thunderstorm WarningHGXChambers, Harris, Liberty, Montgomery, Polk, San Jacinto and 1 more48 min
Apr 27, 5:18 AM CDTSevere Thunderstorm WarningHGXBrazoria, Chambers, Fort Bend, Galveston, Harris, Liberty57 min
Apr 27, 5:20 AM CDTTornado WarningHGXPolk, San Jacinto25 min
Apr 27, 5:31 AM CDTSevere Thunderstorm WarningSHVPanola, Sabine, San Augustine, Shelby59 min
Apr 27, 5:51 AM CDTSevere Thunderstorm WarningHGXChambers, Galveston, Liberty54 min
Apr 27, 5:54 AM CDTTornado WarningHGXLiberty21 min
Apr 27, 6:08 AM CDTSevere Thunderstorm WarningHGXBrazoria, Galveston37 min
Apr 27, 6:39 AM CDTSevere Thunderstorm WarningSHVSabine, San Augustine66 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 00:00Z, 3.4 hours before the alert went out and 225 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 00:00Z on 2016-04-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1971 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 00:00Z on 2016-04-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 17 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
1971 J/kg
Mixed-layer CIN
-66 J/kg
Mixed-layer LCL
1327 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
17 m²/s²
0-3 km storm-relative helicity
131 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.8

Open this sounding in Storm Lab

The text

As transmitted.

921 
WWUS20 KWNS 270319
SEL3  
SPC WW 270319
ARZ000-LAZ000-OKZ000-TXZ000-271000-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 113
NWS STORM PREDICTION CENTER NORMAN OK
1020 PM CDT TUE APR 26 2016

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
  WESTERN ARKANSAS
  PARTS OF NORTHWEST LOUISIANA
  PORTIONS OF EASTERN OKLAHOMA
  PARTS OF CENTRAL AND EASTERN TEXAS

* EFFECTIVE THIS TUESDAY NIGHT AND WEDNESDAY MORNING FROM 1020 PM
  UNTIL 500 AM CDT.

* PRIMARY THREATS INCLUDE...
  SCATTERED LARGE HAIL AND ISOLATED VERY LARGE HAIL EVENTS TO 2
    INCHES IN DIAMETER POSSIBLE
  SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE
  A TORNADO OR TWO POSSIBLE

SUMMARY...A WELL-ORGANIZED BAND OF STRONG TO SEVERE THUNDERSTORMS
WILL CONTINUE MOVING EASTWARD ACROSS EASTERN OKLAHOMA AND
NORTHERN/CENTRAL TEXAS OVER THE NEXT FEW HOURS...AND LATER WILL
REACH WESTERN PORTIONS OF ARKANSAS AND LOUISIANA.  LOCALLY DAMAGING
WINDS AND SOME HAIL WILL LIKELY OCCUR WITHIN PORTIONS OF THE WATCH
AREA.

THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 80
STATUTE MILES EAST AND WEST OF A LINE FROM 35 MILES NORTH OF
FAYETTEVILLE ARKANSAS TO 25 MILES WEST SOUTHWEST OF HUNTSVILLE
TEXAS.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED
WATCH OUTLINE UPDATE (WOUS64 KWNS WOU3).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY
DO PRODUCE TORNADOES.

&&

OTHER WATCH INFORMATION...CONTINUE...WW 109...WW 111...WW 112...

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM
MOTION VECTOR 27035.


...GOSS

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 26, 9:36 PM CDTMesoscale DiscussionSPCBenton, Carroll, Crawford, Franklin, Garland, Hempstead and 18 more114 min
Apr 27, 1:35 AM CDTMesoscale DiscussionSPCBaxter, Boone, Bradley, Calhoun, Carroll, Clark and 45 more115 min
Apr 26, 8:52 PM CDTMesoscale DiscussionSPCAtoka, Bryan, Canadian, Carter, Choctaw, Cleveland and 40 more53 min
Apr 27, 4:28 AM CDTMesoscale DiscussionSPCAngelina, Atascosa, Austin, Colorado, DeWitt, Fort Bend and 17 more92 min
Apr 27, 4:56 AM CDTSevere Thunderstorm WatchSPCAngelina, Hardin, Jasper, Jefferson, Newton, Orange and 4 more5 hr
Apr 27, 7:30 AM CDTMesoscale DiscussionSPCJefferson, Newton, Orange2 hr

Nearby

Severe Thunderstorm Watches in Texas, 2016Severe Thunderstorm Watches in Arkansas, 2016Severe Thunderstorm Watches in Oklahoma, 2016Every severe thunderstorm watch in 2016

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.