Alert archive / Louisiana / Severe Thunderstorm Watches in 2004

Severe Thunderstorm Watch 65

April 10, 20044 parishes in Louisiana; 4 counties in Texas

The Storm Prediction Center issued this severe thunderstorm watch at Apr 10, 2004, 6:30 PM CDT for 4 parishes in Louisiana; 4 counties in Texas. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued: Apr 10, 2004, 6:30 PM CDT (23:30 UTC)
Expired: Apr 10, 2004, 11:00 PM CDT
In force: 5 hr
Issued by: the Storm Prediction Center

Counties Beauregard Parish, LA, Calcasieu Parish, LA, Cameron Parish, LA, Vernon Parish, LA, Jasper County, TX, Jefferson County, TX, Newton County, TX, Orange County, TX

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
Apr 10, 8:37 PM CDT	Severe Thunderstorm Warning	LCH	Jasper	53 min
Apr 10, 9:19 PM CDT	Severe Thunderstorm Warning	LCH	Newton	56 min
Apr 10, 9:56 PM CDT	Severe Thunderstorm Warning	LCH	Beauregard, Vernon	64 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

Mesoscale Discussion 321Apr 10, 5:38 PM CDT

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 12:00Z, 11.5 hours before the alert went out and 80 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 4 J/kg
Mixed-layer CIN: -485 J/kg
Mixed-layer LCL: 1232 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 72 m²/s²
0-3 km storm-relative helicity: 135 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.

Issued	Product	Office	Counties	Lasted
Apr 10, 2:50 PM CDT	Mesoscale Discussion	SPC	Bienville, Bossier, Caddo, Claiborne, Jackson, Lincoln and 7 more	115 min
Apr 10, 3:25 PM CDT	Severe Thunderstorm Watch	SPC	Bienville, Bossier, Caddo, Caldwell, Catahoula, Claiborne and 20 more	6 hr
Apr 10, 5:38 PM CDT	Mesoscale Discussion	SPC	Allen, Beauregard, Calcasieu, Cameron, Vernon	2 hr
Apr 9, 7:02 PM CDT	Mesoscale Discussion	SPC	Delta, Fannin, Grayson, Lamar, Red River	58 min
Apr 9, 7:40 PM CDT	Severe Thunderstorm Watch	SPC	Delta, Fannin, Lamar, Red River	5 hr
Apr 9, 9:25 PM CDT	Mesoscale Discussion	SPC	Armstrong, Bailey, Briscoe, Castro, Childress, Collingsworth and 16 more	95 min
Apr 9, 10:06 PM CDT	Mesoscale Discussion	SPC	Delta, Fannin, Lamar, Red River	54 min
Apr 9, 11:57 PM CDT	Mesoscale Discussion	SPC	Bowie, Delta, Fannin, Lamar, Red River	63 min
Apr 10, 5:57 AM CDT	Mesoscale Discussion	SPC	Lamar, Red River	93 min
Apr 10, 9:08 AM CDT	Mesoscale Discussion	SPC	Bandera, Bell, Blanco, Bosque, Brown, Burnet and 21 more	2 hr
Apr 10, 10:20 AM CDT	Severe Thunderstorm Watch	SPC	Bandera, Bastrop, Bell, Bexar, Blanco, Bosque and 33 more	6 hr
Apr 10, 12:43 PM CDT	Mesoscale Discussion	SPC	Bandera, Bastrop, Bell, Bexar, Blanco, Burleson and 26 more	2 hr
Apr 10, 2:50 PM CDT	Severe Thunderstorm Watch	SPC	Atascosa, Austin, Bandera, Bastrop, Bee, Bexar and 52 more	5 hr
Apr 10, 6:09 PM CDT	Mesoscale Discussion	SPC	Atascosa, Austin, Bee, Brazoria, Colorado, DeWitt and 17 more	96 min

Nearby

Severe Thunderstorm Watches in Louisiana, 2004 Severe Thunderstorm Watches in Texas, 2004 Every 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.