Alert archive / Louisiana / Tornado Watches in 2003
Tornado Watch 107
The Storm Prediction Center issued this tornado watch at Apr 6, 2003, 3:45 PM CDT for 4 states. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 6, 2003, 3:45 PM CDT (20:45 UTC)
- Expired
- Apr 6, 2003, 9:00 PM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 79 counties
Ashley County, AR, Chicot County, AR, Union County, AR, Allen Parish, LA, Avoyelles Parish, LA, Beauregard Parish, LA, 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, Evangeline 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, Rapides Parish, LA, Red River Parish, LA, Richland Parish, LA, Sabine Parish, LA, Tensas Parish, LA, Union Parish, LA, Vernon Parish, LA, Webster Parish, LA, West Carroll Parish, LA, Winn Parish, LA, Adams County, MS, Amite County, MS, Attala County, MS, Carroll County, MS, Claiborne County, MS, Copiah County, MS, Covington County, MS, Franklin County, MS, Grenada County, MS, Hinds County, MS, Holmes County, MS, Humphreys County, MS, Issaquena County, MS, Jefferson County, MS, Jefferson Davis County, MS, Lawrence County, MS, Leflore County, MS, Lincoln County, MS, Madison County, MS, Montgomery County, MS, Rankin County, MS, Sharkey County, MS, Simpson County, MS, Sunflower County, MS, Warren County, MS, Washington County, MS, Wilkinson County, MS, Yalobusha County, MS, Yazoo County, MS, Angelina County, TX, Gregg County, TX, Hardin County, TX, Harrison County, TX, Jasper County, TX, Liberty County, TX, Nacogdoches County, TX, Newton County, TX, Panola County, TX, Polk County, TX, Rusk County, TX, Sabine County, TX, San Augustine County, TX, Shelby County, TX, Tyler County, TX
Warnings issued inside it
43 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 6, 3:57 PM CDT | Tornado Warning | JAN | Morehouse | 43 min |
| Apr 6, 3:58 PM CDT | Severe Thunderstorm Warning | SHV | De Soto | 47 min |
| Apr 6, 4:14 PM CDT | Tornado Warning | SHV | Jackson | 46 min |
| Apr 6, 4:20 PM CDT | Severe Thunderstorm Warning | JAN | West Carroll | 45 min |
| Apr 6, 4:26 PM CDT | Severe Thunderstorm Warning | SHV | San Augustine | 49 min |
| Apr 6, 4:33 PM CDT | Severe Thunderstorm Warning | JAN | Chicot | 42 min |
| Apr 6, 4:39 PM CDT | Severe Thunderstorm Warning | JAN | East Carroll | 46 min |
| Apr 6, 4:42 PM CDT | Severe Thunderstorm Warning | JAN | Morehouse | 28 min |
| Apr 6, 4:48 PM CDT | Severe Thunderstorm Warning | SHV | Shelby | 42 min |
| Apr 6, 4:54 PM CDT | Tornado Warning | JAN | East Carroll, West Carroll | 46 min |
| Apr 6, 4:54 PM CDT | Severe Thunderstorm Warning | SHV | Ouachita | 51 min |
| Apr 6, 4:57 PM CDT | Severe Thunderstorm Warning | SHV | Sabine | 48 min |
| Apr 6, 4:59 PM CDT | Tornado Warning | JAN | Washington | 46 min |
| Apr 6, 5:05 PM CDT | Severe Thunderstorm Warning | JAN | Richland | 60 min |
| Apr 6, 5:15 PM CDT | Flash Flood Warning | JAN | Carroll, Grenada, Leflore, Montgomery, Sunflower | 2 hr |
| Apr 6, 5:17 PM CDT | Flash Flood Warning | JAN | East Carroll, Morehouse, Richland, West Carroll | 4 hr |
| Apr 6, 5:21 PM CDT | Tornado Warning | JAN | Humphreys | 44 min |
| Apr 6, 5:23 PM CDT | Severe Thunderstorm Warning | SHV | Sabine | 52 min |
| Apr 6, 5:25 PM CDT | Tornado Warning | JAN | Issaquena | 45 min |
| Apr 6, 5:32 PM CDT | Tornado Warning | JAN | Richland | 43 min |
| Apr 6, 5:37 PM CDT | Tornado Warning | JAN | Franklin | 43 min |
| Apr 6, 5:38 PM CDT | Tornado Warning | JAN | Sharkey, Yazoo | 57 min |
| Apr 6, 5:41 PM CDT | Severe Thunderstorm Warning | JAN | East Carroll, West Carroll | 44 min |
| Apr 6, 5:47 PM CDT | Severe Thunderstorm Warning | JAN | Catahoula, Concordia | 48 min |
| Apr 6, 5:56 PM CDT | Severe Thunderstorm Warning | SHV | Natchitoches | 64 min |
| Apr 6, 5:59 PM CDT | Tornado Warning | JAN | Madison | 46 min |
| Apr 6, 6:02 PM CDT | Tornado Warning | JAN | Tensas | 43 min |
| Apr 6, 6:05 PM CDT | Severe Thunderstorm Warning | JAN | Humphreys, Leflore | 40 min |
| Apr 6, 6:24 PM CDT | Flash Flood Warning | JAN | Hinds, Madison | 5 hr |
| Apr 6, 6:30 PM CDT | Tornado Warning | JAN | Warren | 45 min |
| Apr 6, 6:30 PM CDT | Tornado Warning | JAN | Madison, Yazoo | 75 min |
| Apr 6, 6:36 PM CDT | Severe Thunderstorm Warning | JAN | Adams, Franklin, Jefferson | 59 min |
| Apr 6, 6:44 PM CDT | Tornado Warning | JAN | Attala, Holmes | 51 min |
| Apr 6, 6:52 PM CDT | Flash Flood Warning | JAN | Attala, Leake, Rankin, Scott | 4 hr |
| Apr 6, 6:54 PM CDT | Severe Thunderstorm Warning | JAN | Hinds | 61 min |
| Apr 6, 7:17 PM CDT | Tornado Warning | JAN | Franklin, Jefferson, Lincoln | 43 min |
| Apr 6, 7:22 PM CDT | Severe Thunderstorm Warning | JAN | Copiah | 43 min |
| Apr 6, 7:31 PM CDT | Severe Thunderstorm Warning | JAN | Attala | 44 min |
| Apr 6, 7:34 PM CDT | Tornado Warning | JAN | Hinds, Rankin | 41 min |
| Apr 6, 7:48 PM CDT | Tornado Warning | JAN | Copiah | 42 min |
| Apr 6, 7:56 PM CDT | Tornado Warning | JAN | Lawrence, Lincoln, Simpson | 49 min |
| Apr 6, 8:22 PM CDT | Tornado Warning | JAN | Jefferson Davis | 28 min |
| Apr 6, 8:47 PM CDT | Tornado Warning | JAN | Covington, Jefferson Davis, Simpson, Smith | 73 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, 8.8 hours before the alert went out and 96 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
- 1292 J/kg
- Mixed-layer CIN
- -53 J/kg
- Mixed-layer LCL
- 492 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 259 m²/s²
- 0-3 km storm-relative helicity
- 405 m²/s²
- Significant tornado parameter
- 2.5
- Supercell composite
- 20.3
The text
As transmitted, in the capitals the NWS used until 2016.
000 WWUS20 KWNS 062045 SEL7 SPC WW 062045 ARZ000-LAZ000-MSZ000-TXZ000-070200- URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 107 STORM PREDICTION CENTER NORMAN OK 345 PM CDT SUN APR 6 2003 THE STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR PORTIONS OF EXTREME SOUTHEAST ARKANSAS NORTHERN AND CENTRAL LOUISIANA WESTERN MISSISSIPPI EAST TEXAS EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 345 PM UNTIL 900 PM CDT. ...THIS IS A PARTICULARLY DANGEROUS SITUATION... DAMAGING TORNADOES...LARGE HAIL TO 3 INCHES IN DIAMETER... THUNDERSTORM WIND GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS. THE TORNADO WATCH AREA IS ALONG AND 90 STATUTE MILES NORTH AND SOUTH OF A LINE FROM 15 MILES WEST NORTHWEST OF LUFKIN TEXAS TO 45 MILES NORTHEAST OF JACKSON MISSISSIPPI. REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS. OTHER WATCH INFORMATION...THIS TORNADO WATCH REPLACES TORNADO WATCH NUMBER 101. WATCH NUMBER 101 WILL NOT BE IN EFFECT AFTER 345 PM CDT. CONTINUE...WW 102...WW 103...WW 104...WW 105...WW 106... DISCUSSION...LINE OF SUPERCELL STORMS EXTENDS FROM EAST TX INTO NORTHERN LA. OTHER CELLS ARE INTENSIFYING IN WARM SECTOR OVER SOUTHERN LA. VERTICAL SHEAR PROFILES AND CAPE VALUES SUGGEST THAT VERY LARGE HAIL AND TORNADOES WILL BE POSSIBLE FROM STRONGEST CELLS. THIS AREA ALSO APPEARS FAVORABLE FOR A FEW STRONG TORNADOES THROUGH THE EVENING HOURS. AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION VECTOR 26035. ...HART 323,0945 340,0893 312,0893 300,0945
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 6, 7:38 AM CDT | Mesoscale Discussion | SPC | Ashley, Bradley, Calhoun, Chicot, Columbia, Lafayette and 3 more | 97 min |
| Apr 6, 7:50 AM CDT | Severe Thunderstorm Watch | SPC | Ashley, Bradley, Calhoun, Chicot, Columbia, Drew and 6 more | 5 hr |
| Apr 6, 8:56 AM CDT | Mesoscale Discussion | SPC | Baxter, Benton, Boone, Carroll, Cleburne, Conway and 21 more | 2 hr |
| Apr 6, 9:45 AM CDT | Severe Thunderstorm Watch | SPC | Baxter, Benton, Boone, Carroll, Conway, Crawford and 22 more | 5 hr |
| Apr 6, 10:00 AM CDT | Mesoscale Discussion | SPC | Arkansas, Ashley, Chicot, Desha, Drew, Jefferson and 4 more | 2 hr |
| Apr 6, 10:20 AM CDT | Mesoscale Discussion | SPC | Arkansas, Ashley, Bradley, Calhoun, Chicot, Clark and 21 more | 55 min |
| Apr 6, 10:30 AM CDT | Tornado Watch | SPC | Ashley, Bradley, Calhoun, Chicot, Columbia, Drew and 6 more | 6 hr |
| Apr 6, 11:05 AM CDT | Severe Thunderstorm Watch | SPC | Arkansas, Baxter, Cleburne, Cleveland, Craighead, Crittenden and 27 more | 5 hr |
| Apr 6, 12:27 PM CDT | Mesoscale Discussion | SPC | Arkansas, Clark, Cleburne, Cleveland, Conway, Craighead and 46 more | 2 hr |
| Apr 6, 2:18 PM CDT | Mesoscale Discussion | SPC | Boone, Conway, Crawford, Franklin, Garland, Howard and 16 more | 57 min |
| Apr 6, 2:55 PM CDT | Severe Thunderstorm Watch | SPC | Baxter, Boone, Clark, Cleburne, Conway, Crawford and 35 more | 5 hr |
| Apr 6, 5:35 PM CDT | Mesoscale Discussion | SPC | Ashley, Chicot, Union | 115 min |
| Apr 6, 6:23 PM CDT | Mesoscale Discussion | SPC | Ashley, Chicot, Union | 97 min |
| Apr 6, 12:03 PM CDT | Mesoscale Discussion | SPC | Bienville, Bossier, Caddo, Caldwell, Claiborne, De Soto and 14 more | 117 min |
| Apr 6, 3:26 PM CDT | Mesoscale Discussion | SPC | Bienville, Caldwell, De Soto, Franklin, Grant, Jackson and 11 more | 2 hr |
| Apr 6, 6:50 PM CDT | Tornado Watch | SPC | Avoyelles, Caldwell, Catahoula, Concordia, East Carroll, Evangeline and 11 more | 6 hr |
| Apr 6, 12:40 PM CDT | Mesoscale Discussion | SPC | Attala, Choctaw, Holmes, Kemper, Lauderdale, Leake and 9 more | 2 hr |
| Apr 6, 1:35 PM CDT | Tornado Watch | SPC | Choctaw, Clarke, Jasper, Jones, Kemper, Lauderdale and 7 more | 5 hr |
| Apr 6, 2:56 PM CDT | Mesoscale Discussion | SPC | Kemper, Lauderdale, Leake, Neshoba, Newton, Noxubee and 2 more | 2 hr |
| Apr 5, 6:11 PM CST | Mesoscale Discussion | SPC | Baylor, Briscoe, Cottle, Crosby, Dickens, Floyd and 9 more | 64 min |
| Apr 5, 6:35 PM CST | Mesoscale Discussion | SPC | Archer, Clay, Collin, Cooke, Dallas, Delta and 23 more | 115 min |
| Apr 5, 6:40 PM CST | Tornado Watch | SPC | Briscoe, Childress, Cottle, Crosby, Dickens, Fisher and 16 more | 5 hr |
| Apr 5, 8:04 PM CST | Mesoscale Discussion | SPC | Archer, Baylor, Clay, Collin, Cooke, Dallas and 25 more | 116 min |
| Apr 5, 9:20 PM CST | Mesoscale Discussion | SPC | Archer, Camp, Clay, Collin, Cooke, Dallas and 31 more | 55 min |
| Apr 5, 9:35 PM CST | Tornado Watch | SPC | Archer, Bowie, Camp, Cass, Clay, Collin and 38 more | 5 hr |
| Apr 5, 10:26 PM CST | Mesoscale Discussion | SPC | Baylor, Childress, Cottle, Dickens, Fisher, Foard and 11 more | 64 min |
| Apr 5, 11:43 PM CST | Mesoscale Discussion | SPC | Archer, Camp, Clay, Collin, Cooke, Dallas and 31 more | 92 min |
| Apr 6, 3:13 AM CDT | Mesoscale Discussion | SPC | Archer, Baylor, Camp, Cass, Cherokee, Clay and 39 more | 107 min |
| Apr 6, 3:39 AM CDT | Mesoscale Discussion | SPC | Archer, Baylor, Camp, Cass, Cherokee, Clay and 39 more | 66 min |
| Apr 6, 4:50 AM CDT | Mesoscale Discussion | SPC | Archer, Baylor, Brown, Callahan, Coke, Coleman and 27 more | 115 min |
| Apr 6, 5:35 AM CDT | Severe Thunderstorm Watch | SPC | Wichita | 4 hr |
| Apr 6, 9:12 AM CDT | Mesoscale Discussion | SPC | Anderson, Bosque, Camp, Cass, Cherokee, Collin and 41 more | 2 hr |
| Apr 6, 12:40 PM CDT | Tornado Watch | SPC | Anderson, Brazos, Burleson, Cherokee, Collin, Cooke and 33 more | 5 hr |
| Apr 6, 3:00 PM CDT | Mesoscale Discussion | SPC | Anderson, Brazos, Cherokee, Delta, Freestone, Grimes and 21 more | 90 min |
Nearby
Tornado Watches in Louisiana, 2003Tornado Watches in Mississippi, 2003Tornado Watches in Texas, 2003Every tornado 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.