Alert archive / Texas / Severe Thunderstorm Watches in 2003

Severe Thunderstorm Watch 540

June 13, 20038 parishes in Louisiana; 18 counties in Texas

The Storm Prediction Center issued this severe thunderstorm watch at Jun 13, 2003, 7:35 PM CDT for 8 parishes in Louisiana; 18 counties in Texas. It was in force for 4 hr.

The area

The outline as issued.

The facts

Issued: Jun 13, 2003, 7:35 PM CDT (00:35 UTC)
Expired: Jun 14, 2003, 12:00 AM CDT
In force: 4 hr
Issued by: the Storm Prediction Center

All 26 counties

Acadia Parish, LA, Allen Parish, LA, Beauregard Parish, LA, Calcasieu Parish, LA, Cameron Parish, LA, Evangeline Parish, LA, Jefferson Davis Parish, LA, Vermilion Parish, LA, Austin County, TX, Brazoria County, TX, Calhoun County, TX, Chambers County, TX, Colorado County, TX, Fort Bend County, TX, Galveston County, TX, Hardin County, TX, Harris County, TX, Jackson County, TX, Jefferson County, TX, Liberty County, TX, Matagorda County, TX, Montgomery County, TX, Newton County, TX, Orange County, TX, Waller County, TX, Wharton 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
Jun 13, 7:49 PM CDT	Severe Thunderstorm Warning	LCH	Calcasieu	56 min
Jun 13, 9:45 PM CDT	Severe Thunderstorm Warning	LCH	Cameron	60 min
Jun 13, 10:18 PM CDT	Severe Thunderstorm Warning	HGX	Jackson	57 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, 0.6 hours before the alert went out and 171 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: 2189 J/kg
Mixed-layer CIN: -7 J/kg
Mixed-layer LCL: 776 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 70 m²/s²
0-3 km storm-relative helicity: 97 m²/s²
Significant tornado parameter: 0.9
Supercell composite: 4.6

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 14, 3:06 PM CDT	Mesoscale Discussion	SPC	Washington	114 min
Jun 13, 7:34 PM CDT	Mesoscale Discussion	SPC	Armstrong, Carson, Childress, Collingsworth, Dallam, Deaf Smith and 15 more	86 min
Jun 13, 8:09 PM CDT	Mesoscale Discussion	SPC	Aransas, Atascosa, Bee, Calhoun, DeWitt, Duval and 15 more	96 min
Jun 13, 8:10 PM CDT	Severe Thunderstorm Watch	SPC	Armstrong, Briscoe, Carson, Childress, Collingsworth, Donley and 10 more	4 hr
Jun 13, 8:30 PM CDT	Mesoscale Discussion	SPC	Andrews, Bailey, Borden, Castro, Cochran, Coke and 29 more	90 min
Jun 13, 9:59 PM CDT	Mesoscale Discussion	SPC	Armstrong, Briscoe, Carson, Childress, Collingsworth, Donley and 10 more	61 min
Jun 13, 11:00 PM CDT	Mesoscale Discussion	SPC	Brooks, Cameron, Hidalgo, Jim Hogg, Kenedy, Starr and 2 more	60 min
Jun 14, 10:49 AM CDT	Mesoscale Discussion	SPC	Childress, Collingsworth, Donley, Gray, Hall, Hardeman and 5 more	3 hr
Jun 14, 2:41 PM CDT	Mesoscale Discussion	SPC	Culberson, Loving, Pecos, Reeves, Ward, Winkler	109 min

Nearby

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