Alert archive / Texas / Tornado Watches in 2008

Tornado Watch 324

May 15, 200816 counties in Arkansas; 20 parishes in Louisiana; 35 counties in Texas

The Storm Prediction Center issued this tornado watch at May 15, 2008, 1:16 AM CDT for 16 counties in Arkansas; 20 parishes in Louisiana; 35 counties in Texas. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
May 15, 2008, 1:16 AM CDT (06:16 UTC)
Expired
May 15, 2008, 7:08 AM CDT
In force
6 hr
Issued by
the Storm Prediction Center
All 71 counties

Bradley County, AR, Calhoun County, AR, Clark County, AR, Cleveland County, AR, Columbia County, AR, Dallas County, AR, Hempstead County, AR, Howard County, AR, Lafayette County, AR, Little River County, AR, Miller County, AR, Nevada County, AR, Ouachita County, AR, Pike County, AR, Sevier County, AR, Union County, AR, Beauregard Parish, LA, Bienville Parish, LA, Bossier Parish, LA, Caddo Parish, LA, Caldwell Parish, LA, Claiborne Parish, LA, De Soto Parish, LA, Grant Parish, LA, Jackson Parish, LA, LaSalle Parish, LA, Lincoln Parish, LA, Natchitoches Parish, LA, Ouachita Parish, LA, Rapides Parish, LA, Red River Parish, LA, Sabine Parish, LA, Union Parish, LA, Vernon Parish, LA, Webster Parish, LA, Winn Parish, LA, Angelina County, TX, Bowie County, TX, Brazos County, TX, Burleson County, TX, Camp County, TX, Cass County, TX, Cherokee County, TX, Gregg County, TX, Grimes County, TX, Hardin County, TX, Harrison County, TX, Houston County, TX, Jasper County, TX, Liberty County, TX, Madison County, TX, Marion County, TX, Montgomery County, TX, Morris County, TX, Nacogdoches County, TX, Newton County, TX, Panola County, TX, Polk County, TX, Rusk County, TX, Sabine County, TX, San Augustine County, TX, San Jacinto County, TX, Shelby County, TX, Smith County, TX, Titus County, TX, Trinity County, TX, Tyler County, TX, Upshur County, TX, Walker County, TX, Washington County, TX, Wood County, TX

The radar

The Shreveport radar (KSHV), 116 km from the middle of the area, began a volume at 06:19 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.

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
May 15, 1:16 AM CDTSevere Thunderstorm WarningSHVCamp, Cass, Franklin, Gregg, Harrison, Marion and 4 more29 min
May 15, 1:44 AM CDTSevere Thunderstorm WarningHGXPolk, Trinity31 min
May 15, 1:49 AM CDTSevere Thunderstorm WarningSHVAngelina, Nacogdoches41 min
May 15, 2:06 AM CDTSevere Thunderstorm WarningLCHJasper, Tyler39 min
May 15, 2:14 AM CDTSevere Thunderstorm WarningHGXPolk16 min
May 15, 2:18 AM CDTFlash Flood WarningSHVAngelina, Nacogdoches3 hr
May 15, 2:21 AM CDTTornado WarningLCHJasper, Tyler24 min
May 15, 2:29 AM CDTTornado WarningHGXMontgomery, San Jacinto16 min
May 15, 2:30 AM CDTSevere Thunderstorm WarningSHVAngelina, Sabine, San Augustine, Shelby45 min
May 15, 2:46 AM CDTSevere Thunderstorm WarningLCHJasper, Tyler44 min
May 15, 3:15 AM CDTSevere Thunderstorm WarningSHVNatchitoches, Sabine45 min
May 15, 3:30 AM CDTTornado WarningLCHNewton15 min
May 15, 3:51 AM CDTSevere Thunderstorm WarningSHVNatchitoches, Sabine39 min
May 15, 3:59 AM CDTTornado WarningLCHJasper, Newton16 min
May 15, 4:06 AM CDTSevere Thunderstorm WarningLCHRapides, Vernon39 min
May 15, 4:15 AM CDTSevere Thunderstorm WarningLCHBeauregard, Calcasieu45 min
May 15, 4:31 AM CDTSevere Thunderstorm WarningSHVGrant, Winn44 min
May 15, 4:41 AM CDTSevere Thunderstorm WarningLCHAllen, Avoyelles, Beauregard, Evangeline, Rapides, Vernon64 min
May 15, 4:58 AM CDTSevere Thunderstorm WarningLCHAcadia, Allen, Beauregard, Calcasieu, Cameron, Jefferson Davis47 min
May 15, 5:06 AM CDTSevere Thunderstorm WarningSHVGrant, LaSalle, Winn39 min
May 15, 5:42 AM CDTSevere Thunderstorm WarningSHVLaSalle33 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 (KSHV), launched 00:00Z, 6.3 hours before the alert went out and 124 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 2008-05-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2008-05-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 198 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
0 m above ground
0-6 km bulk shear
64 kt
0-1 km storm-relative helicity
198 m²/s²
0-3 km storm-relative helicity
231 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.1

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 15, 4:16 AM CDTTornado WatchSPCAshley, Chicot, Desha, Drew, Lincoln7 hr
May 15, 5:54 AM CDTMesoscale DiscussionSPCAshley, Chicot, Drew96 min
May 15, 2:11 AM CDTMesoscale DiscussionSPCAcadia, Allen, Avoyelles, Beauregard, Calcasieu, Cameron and 11 more94 min
May 15, 7:41 AM CDTMesoscale DiscussionSPCAscension, Assumption, East Baton Rouge, East Feliciana, Iberville, Jefferson and 17 more94 min
May 15, 8:42 AM CDTMesoscale DiscussionSPCAscension, Assumption, East Baton Rouge, East Feliciana, Iberville, Jefferson and 17 more63 min
May 14, 7:06 PM CDTMesoscale DiscussionSPCAtascosa, Bandera, Bexar, Blanco, Brown, Burnet and 30 more54 min
May 14, 7:50 PM CDTTornado WatchSPCBastrop, Bell, Bosque, Brazos, Burleson, Caldwell and 30 more6 hr
May 14, 7:53 PM CDTMesoscale DiscussionSPCBrooks, Hidalgo, Jim Hogg, Starr, Zapata67 min
May 14, 10:02 PM CDTMesoscale DiscussionSPCAustin, Bandera, Bastrop, Bell, Bexar, Blanco and 76 more88 min
May 14, 11:40 PM CDTMesoscale DiscussionSPCAnderson, Angelina, Cherokee, Gregg, Henderson, Houston and 9 more65 min
May 15, 6:24 PM CDTMesoscale DiscussionSPCDimmit, Maverick66 min

Nearby

Tornado Watches in Texas, 2008Tornado Watches in Louisiana, 2008Tornado Watches in Arkansas, 2008Every tornado watch in 2008

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.