Alert archive / Louisiana / Severe Thunderstorm Watches in 2003

Severe Thunderstorm Watch 376

May 14, 200325 parishes in Louisiana; Adams County, Mississippi; 14 counties in Texas

The Storm Prediction Center issued this severe thunderstorm watch at May 14, 2003, 11:35 PM CDT for 25 parishes in Louisiana; Adams County, Mississippi; 14 counties in Texas. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
May 14, 2003, 11:35 PM CDT (04:35 UTC)
Expired
May 15, 2003, 5:00 AM CDT
In force
5 hr
Issued by
the Storm Prediction Center
All 40 counties

Bienville Parish, LA, Bossier Parish, LA, Caddo Parish, LA, Caldwell Parish, LA, Catahoula Parish, LA, Claiborne Parish, LA, Concordia Parish, LA, De Soto Parish, LA, East Carroll Parish, LA, Franklin Parish, LA, Grant Parish, LA, Jackson Parish, LA, LaSalle Parish, LA, Lincoln Parish, LA, Madison Parish, LA, Morehouse Parish, LA, Natchitoches Parish, LA, Ouachita Parish, LA, Red River Parish, LA, Richland Parish, LA, Tensas Parish, LA, Union Parish, LA, Webster Parish, LA, West Carroll Parish, LA, Winn Parish, LA, Adams County, MS, Camp County, TX, Cass County, TX, Cherokee County, TX, Franklin County, TX, Gregg County, TX, Harrison County, TX, Marion County, TX, Morris County, TX, Panola County, TX, Rusk County, TX, Shelby County, TX, Smith County, TX, Titus County, TX, Upshur County, TX

The radar

The Shreveport radar (KSHV), 22 km from the middle of the area, began a volume at 04:35 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

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

IssuedProductOfficeCountiesLasted
May 14, 11:49 PM CDTFlash Flood WarningJANRichland2 hr
May 15, 12:07 AM CDTSevere Thunderstorm WarningJANFranklin58 min
May 15, 1:05 AM CDTSevere Thunderstorm WarningSHVWinn55 min
May 15, 1:20 AM CDTFlash Flood WarningJANFranklin, Richland5 hr
May 15, 4:18 AM CDTFlash Flood WarningSHVWebster4 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, 4.6 hours before the alert went out and 13 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 2003-05-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2404 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 2003-05-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 114 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
2404 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
1182 m above ground
0-6 km bulk shear
65 kt
0-1 km storm-relative helicity
114 m²/s²
0-3 km storm-relative helicity
250 m²/s²
Significant tornado parameter
2.2
Supercell composite
10.6

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 14, 9:20 PM CDTMesoscale DiscussionSPCBienville, Bossier, Caddo, Caldwell, Claiborne, East Carroll and 12 more115 min
May 15, 2:27 AM CDTMesoscale DiscussionSPCBienville, Bossier, Caddo, Caldwell, Catahoula, Concordia and 10 more2 hr
May 15, 11:48 AM CDTMesoscale DiscussionSPCAttala, Carroll, Chickasaw, Choctaw, Clarke, Clay and 15 more117 min
May 14, 7:36 PM CDTMesoscale DiscussionSPCBowie, Red River114 min
May 14, 11:20 PM CDTMesoscale DiscussionSPCBell, Bosque, Coryell, Ellis, Falls, Freestone and 5 more115 min
May 14, 11:45 PM CDTSevere Thunderstorm WatchSPCAnderson, Bosque, Collin, Dallas, Delta, Denton and 16 more5 hr
May 15, 2:10 AM CDTMesoscale DiscussionSPCAnderson, Collin, Dallas, Denton, Ellis, Henderson and 13 more2 hr
May 15, 1:31 PM CDTMesoscale DiscussionSPCArmstrong, Briscoe, Carson, Castro, Dallam, Deaf Smith and 10 more119 min
May 15, 1:55 PM CDTTornado WatchSPCArmstrong, Carson, Collingsworth, Dallam, Deaf Smith, Donley and 13 more6 hr
May 15, 3:41 PM CDTMesoscale DiscussionSPCArmstrong, Baylor, Briscoe, Carson, Castro, Childress and 30 more94 min
May 15, 4:05 PM CDTTornado WatchSPCBorden, Briscoe, Castro, Childress, Cottle, Crosby and 20 more6 hr
May 15, 5:15 PM CDTMesoscale DiscussionSPCFrio, Kinney, Maverick, Uvalde, Zavala2 hr
May 15, 5:49 PM CDTMesoscale DiscussionSPCBaylor, Coke, Cottle, Fisher, Foard, Hardeman and 17 more116 min
May 15, 6:25 PM CDTTornado WatchSPCArcher, Baylor, Borden, Briscoe, Brown, Callahan and 45 more6 hr
May 15, 6:47 PM CDTMesoscale DiscussionSPCChildress, Collingsworth, Donley, Gray, Hall, Hansford and 6 more58 min
May 15, 6:50 PM CDTTornado WatchSPCArmstrong, Carson, Collingsworth, Dallam, Donley, Gray and 12 more5 hr

Nearby

Severe Thunderstorm Watches in Louisiana, 2003Severe Thunderstorm Watches in Texas, 2003Severe Thunderstorm Watches in Mississippi, 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.