Alert archive / Louisiana / Severe Thunderstorm Watches in 2003
Severe Thunderstorm Watch 112
The Storm Prediction Center issued this severe thunderstorm watch at Apr 7, 2003, 10:05 AM CDT for 32 parishes in Louisiana; 17 counties in Mississippi; 6 counties in Texas. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 7, 2003, 10:05 AM CDT (15:05 UTC)
- Expired
- Apr 7, 2003, 4:00 PM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 55 counties
Acadia Parish, LA, Allen Parish, LA, Ascension Parish, LA, Assumption Parish, LA, Avoyelles Parish, LA, Beauregard Parish, LA, Calcasieu Parish, LA, Cameron Parish, LA, East Baton Rouge Parish, LA, East Feliciana Parish, LA, Evangeline Parish, LA, Iberia Parish, LA, Iberville Parish, LA, Jefferson Davis Parish, LA, Lafayette Parish, LA, Livingston Parish, LA, Orleans Parish, LA, Pointe Coupee Parish, LA, Saint Bernard Parish, LA, Saint Charles Parish, LA, Saint Helena Parish, LA, Saint James Parish, LA, Saint John the Baptist Parish, LA, Saint Landry Parish, LA, Saint Martin Parish, LA, Saint Tammany Parish, LA, St. Mary Parish, LA, Tangipahoa Parish, LA, Vermilion Parish, LA, Washington Parish, LA, West Baton Rouge Parish, LA, West Feliciana Parish, LA, Amite County, MS, Forrest County, MS, George County, MS, Greene County, MS, Hancock County, MS, Harrison County, MS, Jackson County, MS, Jones County, MS, Lamar County, MS, Marion County, MS, Pearl River County, MS, Perry County, MS, Pike County, MS, Stone County, MS, Walthall County, MS, Wayne County, MS, Wilkinson County, MS, Chambers County, TX, Galveston County, TX, Hardin County, TX, Jefferson County, TX, Liberty County, TX, Orange County, TX
The radar
The Lake Charles radar (KLCH), 73 km from the middle of the area, began a volume at 15:08 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
39 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 7, 10:18 AM CDT | Severe Thunderstorm Warning | JAN | Lamar | 62 min |
| Apr 7, 10:25 AM CDT | Severe Thunderstorm Warning | JAN | Covington, Jefferson Davis, Marion | 65 min |
| Apr 7, 10:31 AM CDT | Severe Thunderstorm Warning | JAN | Forrest | 59 min |
| Apr 7, 10:49 AM CDT | Severe Thunderstorm Warning | HGX | Galveston, Harris | 41 min |
| Apr 7, 10:50 AM CDT | Severe Thunderstorm Warning | LCH | Vermilion | 40 min |
| Apr 7, 10:53 AM CDT | Severe Thunderstorm Warning | LIX | Pearl River | 37 min |
| Apr 7, 10:58 AM CDT | Severe Thunderstorm Warning | LCH | Acadia, Lafayette, Vermilion | 62 min |
| Apr 7, 11:02 AM CDT | Severe Thunderstorm Warning | HGX | Chambers | 43 min |
| Apr 7, 11:07 AM CDT | Severe Thunderstorm Warning | MOB | Stone | 38 min |
| Apr 7, 11:36 AM CDT | Severe Thunderstorm Warning | LCH | Jefferson | 54 min |
| Apr 7, 11:47 AM CDT | Severe Thunderstorm Warning | LCH | Iberia | 58 min |
| Apr 7, 12:29 PM CDT | Severe Thunderstorm Warning | LCH | Cameron, Vermilion | 61 min |
| Apr 7, 12:31 PM CDT | Severe Thunderstorm Warning | LIX | East Baton Rouge, Livingston | 44 min |
| Apr 7, 12:32 PM CDT | Severe Thunderstorm Warning | HGX | Chambers, Harris | 43 min |
| Apr 7, 12:56 PM CDT | Severe Thunderstorm Warning | LIX | Assumption, Iberville | 49 min |
| Apr 7, 1:10 PM CDT | Severe Thunderstorm Warning | LIX | Livingston | 50 min |
| Apr 7, 1:16 PM CDT | Severe Thunderstorm Warning | HGX | Chambers, Liberty | 44 min |
| Apr 7, 1:23 PM CDT | Severe Thunderstorm Warning | LCH | Cameron | 52 min |
| Apr 7, 1:23 PM CDT | Tornado Warning | LIX | Ascension, Assumption, Iberville, Saint James | 37 min |
| Apr 7, 1:24 PM CDT | Severe Thunderstorm Warning | LCH | Vermilion | 66 min |
| Apr 7, 1:34 PM CDT | Severe Thunderstorm Warning | LIX | Saint Tammany, Tangipahoa | 41 min |
| Apr 7, 1:44 PM CDT | Tornado Warning | LIX | Saint Tammany, Tangipahoa | 31 min |
| Apr 7, 1:57 PM CDT | Tornado Warning | LIX | Ascension, Livingston | 33 min |
| Apr 7, 2:00 PM CDT | Severe Thunderstorm Warning | LCH | Jefferson | 60 min |
| Apr 7, 2:12 PM CDT | Severe Thunderstorm Warning | LIX | Saint Tammany, Tangipahoa, Washington | 48 min |
| Apr 7, 2:13 PM CDT | Severe Thunderstorm Warning | LCH | Iberia, St. Mary | 62 min |
| Apr 7, 2:28 PM CDT | Severe Thunderstorm Warning | LCH | Cameron, Vermilion | 62 min |
| Apr 7, 2:42 PM CDT | Severe Thunderstorm Warning | LIX | Hancock, Pearl River | 63 min |
| Apr 7, 2:57 PM CDT | Severe Thunderstorm Warning | LIX | Saint Tammany | 33 min |
| Apr 7, 3:05 PM CDT | Severe Thunderstorm Warning | LIX | Assumption, Lafourche, Terrebonne | 55 min |
| Apr 7, 3:09 PM CDT | Severe Thunderstorm Warning | LCH | Lafayette | 66 min |
| Apr 7, 3:12 PM CDT | Severe Thunderstorm Warning | LCH | Saint Martin | 63 min |
| Apr 7, 3:13 PM CDT | Tornado Warning | LIX | Hancock, Pearl River | 32 min |
| Apr 7, 3:28 PM CDT | Severe Thunderstorm Warning | LCH | Cameron | 62 min |
| Apr 7, 3:28 PM CDT | Severe Thunderstorm Warning | LIX | Harrison | 62 min |
| Apr 7, 3:30 PM CDT | Tornado Warning | LIX | Assumption | 30 min |
| Apr 7, 3:31 PM CDT | Severe Thunderstorm Warning | LCH | Iberia, Saint Martin | 59 min |
| Apr 7, 3:39 PM CDT | Severe Thunderstorm Warning | MOB | Stone | 51 min |
| Apr 7, 3:55 PM CDT | Severe Thunderstorm Warning | LIX | Lafourche, Saint James, Saint John the Baptist | 65 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 12:00Z, 3.1 hours before the alert went out and 71 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.
- Mixed-layer CAPE
- 1791 J/kg
- Mixed-layer CIN
- -58 J/kg
- Mixed-layer LCL
- 518 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- -64 m²/s²
- 0-3 km storm-relative helicity
- 9 m²/s²
- Significant tornado parameter
- -0.6
- Supercell composite
- -2.0
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 6, 8:13 PM CDT | Mesoscale Discussion | SPC | Catahoula, Concordia, Franklin, LaSalle, Tensas | 2 hr |
| Apr 7, 9:42 AM CDT | Mesoscale Discussion | SPC | Acadia, Allen, Ascension, Assumption, Beauregard, Calcasieu and 16 more | 3 hr |
| Apr 7, 11:02 AM CDT | Mesoscale Discussion | SPC | Acadia, Ascension, Cameron, East Baton Rouge, Iberville, Lafayette and 8 more | 3 hr |
| Apr 7, 2:13 PM CDT | Mesoscale Discussion | SPC | Acadia, Ascension, Assumption, Calcasieu, Cameron, East Baton Rouge and 20 more | 3 hr |
| Apr 7, 2:36 PM CDT | Mesoscale Discussion | SPC | Acadia, Ascension, Assumption, Calcasieu, Cameron, East Baton Rouge and 20 more | 114 min |
| Apr 7, 3:40 PM CDT | Severe Thunderstorm Watch | SPC | Acadia, Ascension, Assumption, Calcasieu, Cameron, East Baton Rouge and 22 more | 5 hr |
| Apr 7, 5:58 PM CDT | Mesoscale Discussion | SPC | Ascension, Assumption, Cameron, Iberia, Iberville, Lafayette and 10 more | 2 hr |
| Apr 6, 9:48 PM CDT | Mesoscale Discussion | SPC | Clarke, Covington, Jasper, Jefferson Davis, Jones, Kemper and 5 more | 87 min |
| Apr 7, 4:49 AM CDT | Mesoscale Discussion | SPC | Kemper, Lauderdale, Newton | 3 hr |
| Apr 7, 9:11 AM CDT | Mesoscale Discussion | SPC | Forrest, George, Greene, Jones, Lamar, Pearl River and 2 more | 3 hr |
| Apr 7, 11:25 AM CDT | Mesoscale Discussion | SPC | George, Greene | 3 hr |
| Apr 7, 12:07 PM CDT | Mesoscale Discussion | SPC | George, Greene | 113 min |
| Apr 7, 12:22 PM CDT | Mesoscale Discussion | SPC | George, Greene | 113 min |
| Apr 7, 12:24 PM CDT | Mesoscale Discussion | SPC | Atascosa, Austin, Bastrop, Bee, Bexar, Brazoria and 28 more | 66 min |
| Apr 7, 1:00 PM CDT | Severe Thunderstorm Watch | SPC | Atascosa, Austin, Bee, Bexar, Brazoria, Caldwell and 23 more | 5 hr |
| Apr 7, 3:36 PM CDT | Mesoscale Discussion | SPC | Edwards, Kinney, Maverick, Real, Uvalde, Val Verde | 114 min |
| Apr 7, 4:35 PM CDT | Severe Thunderstorm Watch | SPC | Atascosa, Bandera, Bee, Bexar, Blanco, Caldwell and 22 more | 5 hr |
Nearby
Severe Thunderstorm Watches in Louisiana, 2003Severe Thunderstorm Watches in Mississippi, 2003Severe Thunderstorm Watches in Texas, 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.