Alert archive / Louisiana / Tornado Watches in 2004
Tornado Watch 124
The Storm Prediction Center issued this tornado watch at Apr 29, 2004, 1:10 PM CDT for 4 states. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 29, 2004, 1:10 PM CDT (18:10 UTC)
- Expired
- Apr 29, 2004, 7:00 PM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 35 counties
Ashley County, AR, Bradley County, AR, Calhoun County, AR, Chicot County, AR, Drew County, AR, Union County, AR, Bienville Parish, LA, Caldwell Parish, LA, Catahoula Parish, LA, Claiborne 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, Union Parish, LA, Webster Parish, LA, West Carroll Parish, LA, Winn Parish, LA, Humphreys County, MS, Issaquena County, MS, Leflore County, MS, Sharkey County, MS, Sunflower County, MS, Washington County, MS, Shelby County, TX
The radar
The Shreveport radar (KSHV), 108 km from the middle of the area, began a volume at 18:12 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
25 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 29, 1:12 PM CDT | Severe Thunderstorm Warning | SHV | Webster | 33 min |
| Apr 29, 1:26 PM CDT | Severe Thunderstorm Warning | SHV | Claiborne | 64 min |
| Apr 29, 1:47 PM CDT | Tornado Warning | LZK | Calhoun | 38 min |
| Apr 29, 1:51 PM CDT | Severe Thunderstorm Warning | SHV | De Soto | 54 min |
| Apr 29, 2:14 PM CDT | Tornado Warning | LZK | Bradley | 61 min |
| Apr 29, 2:51 PM CDT | Severe Thunderstorm Warning | SHV | Lincoln | 24 min |
| Apr 29, 3:00 PM CDT | Severe Thunderstorm Warning | JAN | Morehouse | 45 min |
| Apr 29, 3:08 PM CDT | Tornado Warning | JAN | Ashley | 47 min |
| Apr 29, 3:09 PM CDT | Severe Thunderstorm Warning | SHV | Union | 36 min |
| Apr 29, 3:13 PM CDT | Severe Thunderstorm Warning | SHV | Red River | 32 min |
| Apr 29, 3:28 PM CDT | Severe Thunderstorm Warning | SHV | Natchitoches | 62 min |
| Apr 29, 3:39 PM CDT | Severe Thunderstorm Warning | JAN | West Carroll | 46 min |
| Apr 29, 3:47 PM CDT | Tornado Warning | JAN | West Carroll | 43 min |
| Apr 29, 4:01 PM CDT | Severe Thunderstorm Warning | SHV | Caldwell | 44 min |
| Apr 29, 4:01 PM CDT | Severe Thunderstorm Warning | SHV | Winn | 59 min |
| Apr 29, 4:18 PM CDT | Severe Thunderstorm Warning | JAN | East Carroll | 47 min |
| Apr 29, 4:39 PM CDT | Severe Thunderstorm Warning | JAN | Franklin, Richland | 61 min |
| Apr 29, 4:41 PM CDT | Severe Thunderstorm Warning | SHV | Caldwell | 64 min |
| Apr 29, 4:44 PM CDT | Severe Thunderstorm Warning | JAN | Issaquena | 46 min |
| Apr 29, 4:56 PM CDT | Tornado Warning | JAN | Franklin | 39 min |
| Apr 29, 4:57 PM CDT | Severe Thunderstorm Warning | SHV | Winn | 18 min |
| Apr 29, 5:10 PM CDT | Tornado Warning | JAN | Madison | 75 min |
| Apr 29, 5:12 PM CDT | Severe Thunderstorm Warning | JAN | Sharkey | 43 min |
| Apr 29, 5:32 PM CDT | Tornado Warning | JAN | Sharkey | 43 min |
| Apr 29, 5:47 PM CDT | Tornado Warning | JAN | Humphreys | 58 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, 6.2 hours before the alert went out and 99 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1349 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 250 m²/s²
- 0-3 km storm-relative helicity
- 281 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WWUS20 KWNS 291809
SEL4
SPC WW 291810
ARZ000-LAZ000-MSZ000-TXZ000-300000-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 124
NWS STORM PREDICTION CENTER NORMAN OK
110 PM CDT THU APR 29 2004
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
SOUTHEASTERN ARKANSAS
NORTHERN LOUISIANA
WEST CENTRAL MISSISSIPPI
EAST CENTRAL TEXAS
EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 110 PM UNTIL
700 PM CDT.
TORNADOES...HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.
THE TORNADO WATCH AREA IS ALONG AND 80 STATUTE MILES EAST AND WEST
OF A LINE FROM 20 MILES NORTH OF GREENVILLE MISSISSIPPI TO 65
MILES WEST OF ALEXANDRIA LOUISIANA.
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.
DISCUSSION...STORMS ARE EXPECTED TO CONTINUE TO INTENSIFY AHEAD OF
VORT MOVING THROUGH THE LOWER MS VALLEY AS THE ATMOSPHERE
DESTABILIZES THIS AFTERNOON. SUPERCELLS WITH ISOLATED TORNADOES AND
DAMAGING WIND GUSTS WILL BE THE MAIN THREATS.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 25035.
...DIAL/HART
334,0893 312,0920 312,0944 334,0922SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 29, 11:22 AM CDT | Mesoscale Discussion | SPC | Ashley, Bradley, Union | 113 min |
| Apr 29, 2:44 PM CDT | Mesoscale Discussion | SPC | Ashley, Chicot, Drew | 2 hr |
| Apr 29, 5:36 PM CDT | Mesoscale Discussion | SPC | Chicot | 84 min |
| Apr 29, 1:56 PM CDT | Mesoscale Discussion | SPC | Ascension, Assumption, Avoyelles, Concordia, East Baton Rouge, East Feliciana and 23 more | 2 hr |
| Apr 29, 3:15 PM CDT | Tornado Watch | SPC | Plaquemines, Saint Bernard | 6 hr |
| Apr 29, 6:15 PM CDT | Mesoscale Discussion | SPC | Orleans, Saint Bernard, Saint Tammany | 90 min |
| Apr 29, 6:55 PM CDT | Tornado Watch | SPC | Attala, Carroll, Choctaw, Hinds, Holmes, Leake and 5 more | 3 hr |
| Apr 28, 7:07 PM CDT | Mesoscale Discussion | SPC | Bandera, Dimmit, Edwards, Frio, Kerr, Kinney and 8 more | 83 min |
| Apr 28, 7:25 PM CDT | Severe Thunderstorm Watch | SPC | Bandera, Brooks, Crockett, Dimmit, Duval, Edwards and 17 more | 6 hr |
| Apr 28, 9:56 PM CDT | Mesoscale Discussion | SPC | Atascosa, Bandera, Brooks, Dimmit, Duval, Edwards and 12 more | 94 min |
| Apr 29, 4:12 AM CDT | Mesoscale Discussion | SPC | Austin, Bastrop, Brazos, Burleson, Colorado, DeWitt and 18 more | 3 hr |
| Apr 29, 1:49 PM CDT | Mesoscale Discussion | SPC | Baylor, Childress, Collingsworth, Cottle, Foard, Hall and 4 more | 116 min |
| Apr 29, 3:05 PM CDT | Severe Thunderstorm Watch | SPC | Childress, Collingsworth, Cottle, Crosby, Dickens, Foard and 7 more | 7 hr |
| Apr 29, 3:58 PM CDT | Mesoscale Discussion | SPC | Borden, Coke, Crockett, Fisher, Glasscock, Howard and 15 more | 2 hr |
| Apr 29, 5:10 PM CDT | Mesoscale Discussion | SPC | Archer, Baylor, Callahan, Clay, Coke, Coleman and 18 more | 95 min |
| Apr 29, 5:35 PM CDT | Severe Thunderstorm Watch | SPC | Archer, Baylor, Callahan, Clay, Fisher, Haskell and 10 more | 5 hr |
| Apr 29, 6:35 PM CDT | Mesoscale Discussion | SPC | Childress, Collingsworth, Cottle, Crosby, Dickens, Foard and 7 more | 85 min |
Nearby
Tornado Watches in Louisiana, 2004Tornado Watches in Arkansas, 2004Tornado Watches in Mississippi, 2004Every tornado 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; radar from the NEXRAD Level II archive.