Alert archive / Texas / Severe Thunderstorm Watches in 2003

Severe Thunderstorm Watch 525

June 12, 20035 counties in Arkansas; Bossier Parish, Caddo Parish, De Soto Parish, Louisiana; 45 counties in Texas

The Storm Prediction Center issued this severe thunderstorm watch at Jun 12, 2003, 1:10 AM CDT for 5 counties in Arkansas; Bossier Parish, Caddo Parish, De Soto Parish, Louisiana; 45 counties in Texas. It was in force for 4 hr.

The area

The outline as issued.

The facts

Issued
Jun 12, 2003, 1:10 AM CDT (06:10 UTC)
Expired
Jun 12, 2003, 5:00 AM CDT
In force
4 hr
Issued by
the Storm Prediction Center
All 53 counties

Hempstead County, AR, Lafayette County, AR, Little River County, AR, Miller County, AR, Nevada County, AR, Bossier Parish, LA, Caddo Parish, LA, De Soto Parish, LA, Anderson County, TX, Angelina County, TX, Austin County, TX, Bowie County, TX, Brazoria County, TX, Brazos County, TX, Camp County, TX, Cass County, TX, Cherokee County, TX, Colorado County, TX, Fort Bend County, TX, Franklin County, TX, Galveston County, TX, Gregg County, TX, Grimes County, TX, Harris County, TX, Harrison County, TX, Henderson County, TX, Houston County, TX, Jackson County, TX, Lavaca County, TX, Leon County, TX, Liberty County, TX, Madison County, TX, Marion County, TX, Montgomery County, TX, Morris County, TX, Nacogdoches County, TX, Panola County, TX, Polk County, TX, Red River County, TX, Rusk 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, Waller County, TX, Washington County, TX, Wharton County, TX, Wood County, TX

The radar

The Houston radar (KHGX), 157 km from the middle of the area, began a volume at 06:10 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

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

IssuedProductOfficeCountiesLasted
Jun 12, 1:54 AM CDTSevere Thunderstorm WarningSHVSmith, Wood66 min
Jun 12, 2:05 AM CDTSevere Thunderstorm WarningHGXBrazos25 min
Jun 12, 2:38 AM CDTSevere Thunderstorm WarningHGXGrimes22 min
Jun 12, 4:03 AM CDTFlash Flood WarningSHVNevada4 hr

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, 6.2 hours before the alert went out and 250 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 2003-06-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3228 joules per kilogram.LCLEL10008507005003002001001 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 2003-06-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 30 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
3228 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
1675 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
30 m²/s²
0-3 km storm-relative helicity
153 m²/s²
Significant tornado parameter
0.0
Supercell composite
4.5

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 11, 7:14 PM CDTMesoscale DiscussionSPCArkansas, Cleveland, Desha, Grant, Jefferson, Lincoln and 1 more2 hr
Jun 11, 7:50 PM CDTSevere Thunderstorm WatchSPCAshley, Chicot, Desha, Drew5 hr
Jun 11, 9:18 PM CDTMesoscale DiscussionSPCChicot87 min
Jun 11, 10:25 PM CDTSevere Thunderstorm WatchSPCCrawford, Howard, Montgomery, Pike, Polk, Scott and 2 more5 hr
Jun 12, 12:14 AM CDTMesoscale DiscussionSPCColumbia, Hempstead, Howard, Lafayette, Little River, Miller and 7 more2 hr
Jun 12, 4:20 AM CDTMesoscale DiscussionSPCColumbia, Lafayette, Miller55 min
Jun 12, 12:30 AM CDTMesoscale DiscussionSPCBossier, Caddo, De Soto2 hr
Jun 12, 8:51 AM CDTMesoscale DiscussionSPCConcordia, East Baton Rouge, East Feliciana, Livingston, Pointe Coupee, Saint Helena and 5 more84 min
Jun 12, 9:10 AM CDTSevere Thunderstorm WatchSPCAscension, Assumption, East Baton Rouge, East Feliciana, Livingston, Orleans and 6 more5 hr
Jun 12, 11:10 AM CDTMesoscale DiscussionSPCLivingston, Orleans, Saint James, Saint John the Baptist, Saint Tammany, Tangipahoa and 1 more95 min
Jun 12, 1:15 PM CDTMesoscale DiscussionSPCOrleans, Saint Tammany60 min
Jun 12, 4:40 PM CDTSevere Thunderstorm WatchSPCEast Baton Rouge, East Feliciana, Livingston, Saint Helena, Saint Tammany, Tangipahoa and 2 more4 hr
Jun 11, 7:13 PM CDTMesoscale DiscussionSPCBorden, Callahan, Coke, Coleman, Concho, Crockett and 29 more62 min
Jun 11, 8:04 PM CDTMesoscale DiscussionSPCBell, Blanco, Bosque, Brown, Burnet, Caldwell and 27 more86 min
Jun 11, 8:15 PM CDTTornado WatchSPCArcher, Baylor, Brown, Callahan, Clay, Coleman and 29 more6 hr
Jun 11, 9:15 PM CDTSevere Thunderstorm WatchSPCBell, Bosque, Collin, Coryell, Dallas, Denton and 19 more5 hr
Jun 11, 11:10 PM CDTMesoscale DiscussionSPCArcher, Baylor, Brown, Callahan, Clay, Coleman and 29 more65 min
Jun 11, 11:49 PM CDTMesoscale DiscussionSPCBell, Bosque, Collin, Coryell, Dallas, Denton and 20 more86 min
Jun 12, 1:30 AM CDTMesoscale DiscussionSPCArcher, Baylor, Clay, Cooke, Denton, Foard and 16 more2 hr
Jun 12, 1:31 PM CDTMesoscale DiscussionSPCBrazos, Burleson, Grimes, Jasper, Montgomery, Newton and 5 more119 min
Jun 12, 1:56 PM CDTMesoscale DiscussionSPCBrown, Callahan, Coleman, Comanche, Concho, Eastland and 11 more2 hr
Jun 12, 3:30 PM CDTSevere Thunderstorm WatchSPCArcher, Baylor, Bosque, Brown, Callahan, Childress and 29 more6 hr
Jun 12, 5:59 PM CDTMesoscale DiscussionSPCArmstrong, Carson, Dallam, Deaf Smith, Donley, Gray and 11 more91 min

Nearby

Severe Thunderstorm Watches in Texas, 2003Severe Thunderstorm Watches in Arkansas, 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.