Alert archive / Texas / Severe Thunderstorm Watches in 2003

Severe Thunderstorm Watch 531

June 12, 20034 parishes in Louisiana; 16 counties in Texas

The Storm Prediction Center issued this severe thunderstorm watch at Jun 12, 2003, 8:00 PM CDT for 4 parishes in Louisiana; 16 counties in Texas. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Jun 12, 2003, 8:00 PM CDT (01:00 UTC)
Expired
Jun 13, 2003, 1:00 AM CDT
In force
5 hr
Issued by
the Storm Prediction Center

Counties Beauregard Parish, LA, Calcasieu Parish, LA, Cameron Parish, LA, Vernon Parish, LA, Chambers County, TX, Fort Bend County, TX, Grimes County, TX, Hardin County, TX, Harris County, TX, Jasper County, TX, Jefferson County, TX, Liberty County, TX, Montgomery County, TX, Newton County, TX, Orange County, TX, Polk County, TX, San Jacinto County, TX, Tyler County, TX, Walker County, TX, Waller County, TX

The radar

The Houston radar (KHGX), 98 km from the middle of the area, began a volume at 01:02 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

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

IssuedProductOfficeCountiesLasted
Jun 12, 8:00 PM CDTTornado WarningHGXGrimes, Madison, Walker45 min
Jun 12, 8:08 PM CDTTornado WarningHGXSan Jacinto, Walker52 min
Jun 12, 8:19 PM CDTTornado WarningHGXPolk56 min
Jun 12, 8:22 PM CDTSevere Thunderstorm WarningLCHVernon53 min
Jun 12, 8:46 PM CDTSevere Thunderstorm WarningHGXMontgomery44 min
Jun 12, 8:57 PM CDTSevere Thunderstorm WarningHGXSan Jacinto33 min
Jun 12, 9:14 PM CDTSevere Thunderstorm WarningHGXPolk46 min
Jun 12, 9:16 PM CDTSevere Thunderstorm WarningHGXLiberty44 min
Jun 12, 9:28 PM CDTSevere Thunderstorm WarningHGXMontgomery47 min
Jun 12, 9:41 PM CDTTornado WarningHGXMontgomery34 min
Jun 12, 9:58 PM CDTSevere Thunderstorm WarningHGXLiberty47 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

Lake Charles Mun, LA (KLCH), launched 00:00Z, 1.0 hours before the alert went out and 157 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, Lake Charles Mun, LA at 00:00Z on 2003-06-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 634 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, Lake Charles Mun, LA at 00:00Z on 2003-06-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 158 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
634 J/kg
Mixed-layer CIN
-130 J/kg
Mixed-layer LCL
925 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
158 m²/s²
0-3 km storm-relative helicity
264 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.6

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 12, 9:51 PM CDTMesoscale DiscussionSPCBeauregard, Calcasieu, Cameron, Vernon54 min
Jun 13, 12:16 PM CDTMesoscale DiscussionSPCAllen, Beauregard, Calcasieu, Grant, LaSalle, Natchitoches and 3 more119 min
Jun 13, 3:20 PM CDTSevere Thunderstorm WatchSPCAcadia, Allen, Ascension, Avoyelles, Beauregard, Calcasieu and 21 more5 hr
Jun 13, 6:13 PM CDTMesoscale DiscussionSPCAcadia, Allen, Ascension, Avoyelles, Beauregard, Calcasieu and 21 more92 min
Jun 12, 7:13 PM CDTMesoscale DiscussionSPCArcher, Baylor, Bosque, Brown, Callahan, Childress and 29 more92 min
Jun 13, 12:02 AM CDTMesoscale DiscussionSPCArcher, Baylor, Clay, Collin, Cooke, Dallas and 20 more88 min
Jun 13, 1:10 AM CDTSevere Thunderstorm WatchSPCArcher, Armstrong, Baylor, Briscoe, Carson, Childress and 18 more5 hr
Jun 13, 5:11 AM CDTMesoscale DiscussionSPCArcher, Baylor, Clay, Cooke, Denton, Hardeman and 7 more64 min
Jun 13, 10:26 AM CDTMesoscale DiscussionSPCCoke, Concho, Crockett, Irion, McCulloch, Menard and 3 more94 min
Jun 13, 12:15 PM CDTSevere Thunderstorm WatchSPCAndrews, Borden, Brown, Burnet, Callahan, Coke and 31 more6 hr
Jun 13, 2:21 PM CDTMesoscale DiscussionSPCBastrop, Brazos, Burleson, Grimes, Hardin, Harris and 14 more54 min
Jun 13, 2:56 PM CDTMesoscale DiscussionSPCAndrews, Borden, Brown, Callahan, Coke, Coleman and 20 more2 hr
Jun 13, 3:00 PM CDTSevere Thunderstorm WatchSPCAustin, Bandera, Bastrop, Bexar, Blanco, Brazos and 40 more5 hr
Jun 13, 3:20 PM CDTMesoscale DiscussionSPCArmstrong, Briscoe, Carson, Castro, Childress, Collingsworth and 21 more85 min
Jun 13, 3:40 PM CDTSevere Thunderstorm WatchSPCArmstrong, Carson, Childress, Collingsworth, Dallam, Deaf Smith and 15 more5 hr
Jun 13, 4:54 PM CDTMesoscale DiscussionSPCAustin, Bandera, Bastrop, Bexar, Blanco, Brazos and 42 more96 min
Jun 13, 5:13 PM CDTMesoscale DiscussionSPCAndrews, Bailey, Cochran, Crane, Dawson, Ector and 11 more62 min
Jun 13, 5:40 PM CDTSevere Thunderstorm WatchSPCAndrews, Bailey, Borden, Castro, Cochran, Coke and 29 more5 hr
Jun 13, 6:55 PM CDTSevere Thunderstorm WatchSPCAransas, Atascosa, Bee, Calhoun, DeWitt, Duval and 15 more5 hr

Nearby

Severe Thunderstorm Watches in Texas, 2003Severe Thunderstorm Watches in Louisiana, 2003Every severe thunderstorm watch in 2003

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.