Alert archive / Louisiana / Severe Thunderstorm Watches in 2004

Severe Thunderstorm Watch 64

April 10, 20044 states

The Storm Prediction Center issued this severe thunderstorm watch at Apr 10, 2004, 3:25 PM CDT for 4 states. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Apr 10, 2004, 3:25 PM CDT (20:25 UTC)
Expired
Apr 10, 2004, 9:00 PM CDT
In force
6 hr
Issued by
the Storm Prediction Center
All 58 counties

Ashley County, AR, Bradley County, AR, Calhoun County, AR, Chicot County, AR, Columbia County, AR, Desha County, AR, Drew County, AR, Lafayette County, AR, Miller County, AR, Ouachita County, AR, Union County, AR, 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, Sabine Parish, LA, Tensas Parish, LA, Union Parish, LA, Webster Parish, LA, West Carroll Parish, LA, Winn Parish, LA, Adams County, MS, Angelina County, TX, Bowie County, TX, Camp County, TX, Cass County, TX, Cherokee County, TX, Franklin County, TX, Gregg County, TX, Harrison County, TX, Marion County, TX, Morris County, TX, Nacogdoches County, TX, Panola County, TX, Rusk County, TX, Sabine County, TX, San Augustine County, TX, Shelby County, TX, Smith County, TX, Titus County, TX, Trinity County, TX, Upshur County, TX

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Apr 10, 3:45 PM CDTSevere Thunderstorm WarningSHVMiller60 min
Apr 10, 4:15 PM CDTSevere Thunderstorm WarningSHVCass45 min
Apr 10, 4:29 PM CDTSevere Thunderstorm WarningSHVLafayette61 min
Apr 10, 4:33 PM CDTSevere Thunderstorm WarningSHVCaddo57 min
Apr 10, 4:48 PM CDTSevere Thunderstorm WarningSHVCherokee57 min
Apr 10, 5:01 PM CDTSevere Thunderstorm WarningSHVBossier59 min
Apr 10, 5:18 PM CDTSevere Thunderstorm WarningSHVWebster57 min
Apr 10, 5:32 PM CDTSevere Thunderstorm WarningSHVCaddo58 min
Apr 10, 6:00 PM CDTSevere Thunderstorm WarningSHVBossier60 min
Apr 10, 6:06 PM CDTSevere Thunderstorm WarningSHVNacogdoches54 min
Apr 10, 6:13 PM CDTSevere Thunderstorm WarningSHVWebster62 min
Apr 10, 6:42 PM CDTSevere Thunderstorm WarningSHVClaiborne63 min
Apr 10, 7:14 PM CDTSevere Thunderstorm WarningLZKDrew41 min
Apr 10, 7:47 PM CDTSevere Thunderstorm WarningJANChicot43 min
Apr 10, 8:08 PM CDTSevere Thunderstorm WarningSHVCaldwell67 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 12:00Z, 8.4 hours before the alert went out and 22 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 12:00Z on 2004-04-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 168 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 12:00Z on 2004-04-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 38 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
168 J/kg
Mixed-layer CIN
-692 J/kg
Mixed-layer LCL
1347 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
38 m²/s²
0-3 km storm-relative helicity
117 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.9

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 9, 7:02 PM CDTMesoscale DiscussionSPCCrawford, Franklin, Garland, Hempstead, Howard, Johnson and 9 more58 min
Apr 9, 7:40 PM CDTSevere Thunderstorm WatchSPCClark, Dallas, Garland, Grant, Hempstead, Hot Spring and 10 more5 hr
Apr 9, 10:06 PM CDTMesoscale DiscussionSPCClark, Dallas, Grant, Hempstead, Hot Spring, Howard and 5 more54 min
Apr 9, 11:57 PM CDTMesoscale DiscussionSPCHempstead, Little River, Nevada, Sevier63 min
Apr 10, 5:57 AM CDTMesoscale DiscussionSPCHoward, Little River, Pike, Polk, Scott, Sebastian and 1 more93 min
Apr 10, 2:50 PM CDTMesoscale DiscussionSPCAshley, Chicot, Columbia, Lafayette, Miller, Union115 min
Apr 10, 5:38 PM CDTMesoscale DiscussionSPCAllen, Beauregard, Calcasieu, Cameron, Vernon2 hr
Apr 10, 6:30 PM CDTSevere Thunderstorm WatchSPCBeauregard, Calcasieu, Cameron, Vernon5 hr
Apr 10, 4:56 PM CDTMesoscale DiscussionSPCKemper, Noxubee, Winston2 hr
Apr 9, 9:25 PM CDTMesoscale DiscussionSPCArmstrong, Bailey, Briscoe, Castro, Childress, Collingsworth and 16 more95 min
Apr 10, 9:08 AM CDTMesoscale DiscussionSPCBandera, Bell, Blanco, Bosque, Brown, Burnet and 21 more2 hr
Apr 10, 10:20 AM CDTSevere Thunderstorm WatchSPCBandera, Bastrop, Bell, Bexar, Blanco, Bosque and 33 more6 hr
Apr 10, 12:43 PM CDTMesoscale DiscussionSPCBandera, Bastrop, Bell, Bexar, Blanco, Burleson and 26 more2 hr
Apr 10, 2:50 PM CDTSevere Thunderstorm WatchSPCAtascosa, Austin, Bandera, Bastrop, Bee, Bexar and 52 more5 hr
Apr 10, 6:09 PM CDTMesoscale DiscussionSPCAtascosa, Austin, Bee, Brazoria, Colorado, DeWitt and 17 more96 min

Nearby

Severe Thunderstorm Watches in Louisiana, 2004Severe Thunderstorm Watches in Texas, 2004Severe Thunderstorm Watches in Arkansas, 2004Every severe thunderstorm watch in 2004

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.