Alert archive / Louisiana / Tornado Watches in 2002

Tornado Watch 732

October 29, 200226 parishes in Louisiana; 13 counties in Mississippi

The Storm Prediction Center issued this tornado watch at Oct 29, 2002, 1:25 AM CST for 26 parishes in Louisiana; 13 counties in Mississippi. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Oct 29, 2002, 1:25 AM CST (07:25 UTC)
Expired
Oct 29, 2002, 7:00 AM CST
In force
6 hr
Issued by
the Storm Prediction Center
All 39 counties

Acadia Parish, LA, Allen Parish, LA, Ascension Parish, LA, Avoyelles Parish, LA, Beauregard Parish, LA, Calcasieu Parish, LA, Cameron Parish, LA, Concordia Parish, LA, East Baton Rouge Parish, LA, East Feliciana Parish, LA, Evangeline Parish, LA, Iberville Parish, LA, Jefferson Davis Parish, LA, Lafayette Parish, LA, Livingston Parish, LA, Pointe Coupee Parish, LA, Rapides Parish, LA, Saint Helena Parish, LA, Saint Landry Parish, LA, Saint Martin Parish, LA, Saint Tammany Parish, LA, Tangipahoa Parish, LA, Vermilion Parish, LA, Washington Parish, LA, West Baton Rouge Parish, LA, West Feliciana Parish, LA, Adams County, MS, Amite County, MS, Copiah County, MS, Franklin County, MS, Jefferson County, MS, Jefferson Davis County, MS, Lawrence County, MS, Lincoln County, MS, Marion County, MS, Pike County, MS, Simpson County, MS, Walthall County, MS, Wilkinson County, MS

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Oct 29, 1:33 AM CSTSevere Thunderstorm WarningLCHAllen, Beauregard57 min
Oct 29, 1:35 AM CSTSevere Thunderstorm WarningLCHAllen, Beauregard55 min
Oct 29, 1:57 AM CSTSevere Thunderstorm WarningLCHJefferson Davis63 min
Oct 29, 2:16 AM CSTTornado WarningLCHAllen29 min
Oct 29, 2:25 AM CSTSevere Thunderstorm WarningLCHAcadia65 min
Oct 29, 2:32 AM CSTSevere Thunderstorm WarningLCHEvangeline58 min
Oct 29, 2:38 AM CSTTornado WarningLCHAcadia, Evangeline, Saint Landry37 min
Oct 29, 2:59 AM CSTFlash Flood WarningLCHCameron3 hr
Oct 29, 3:05 AM CSTSevere Thunderstorm WarningLCHLafayette55 min
Oct 29, 3:13 AM CSTFlash Flood WarningLCHLafayette3 hr
Oct 29, 3:20 AM CSTSevere Thunderstorm WarningLCHSaint Landry55 min
Oct 29, 3:29 AM CSTFlash Flood WarningLCHBeauregard3 hr
Oct 29, 3:32 AM CSTSevere Thunderstorm WarningLCHSaint Martin58 min
Oct 29, 3:41 AM CSTTornado WarningLIXPointe Coupee56 days
Oct 29, 3:42 AM CSTTornado WarningLCHSaint Martin33 min
Oct 29, 4:02 AM CSTFlash Flood WarningLCHCalcasieu2 hr
Oct 29, 4:11 AM CSTSevere Thunderstorm WarningLIXEast Baton Rouge, Iberville, West Baton Rouge34 min
Oct 29, 4:46 AM CSTSevere Thunderstorm WarningLIXEast Baton Rouge, East Feliciana, Livingston, Saint Helena44 min
Oct 29, 4:58 AM CSTFlash Flood WarningLCHVermilion2 hr
Oct 29, 5:04 AM CSTSevere Thunderstorm WarningLIXAscension26 min
Oct 29, 5:31 AM CSTSevere Thunderstorm WarningLIXAscension, Livingston, Tangipahoa44 min
Oct 29, 5:46 AM CSTTornado WarningLIXTangipahoa56 days
Oct 29, 5:58 AM CSTTornado WarningLIXSaint Tammany56 days
Oct 29, 6:26 AM CSTSevere Thunderstorm WarningLIXSaint Tammany49 min

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 00:00Z, 7.4 hours before the alert went out and 124 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-pSkew-T log-p diagram, Lake Charles Mun, LA at 00:00Z on 2002-10-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 51 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lake Charles Mun, LA at 00:00Z on 2002-10-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 102 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
51 J/kg
Mixed-layer CIN
-148 J/kg
Mixed-layer LCL
1502 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
102 m²/s²
0-3 km storm-relative helicity
106 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000
WWUS20 KWNS 290727
SEL2  
SPC WW 290725
LAZ000-MSZ000-CWZ000-291300-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 732
STORM PREDICTION CENTER NORMAN OK
125 AM CST TUE OCT 29 2002

THE STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF

SOUTHERN LOUISIANA                          
SOUTHWEST MISSISSIPPI                        
ADJACENT COASTAL WATERS                     

EFFECTIVE THIS TUESDAY MORNING FROM 125 AM UNTIL 700 AM CST.

TORNADOES...HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS TO
70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS ALONG AND 60 STATUTE MILES NORTH AND
SOUTH OF A LINE FROM 25 MILES WEST SOUTHWEST OF LAKE CHARLES
LOUISIANA TO 40 MILES EAST NORTHEAST OF MC COMB 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 731.  WATCH NUMBER 731 WILL NOT BE IN EFFECT AFTER 125 AM
CST.

DISCUSSION...MESOLOW ON WARM FRONT IN SW LA SHOULD CONTINUE MOVING
ENEWD FOR THE NEXT FEW HOURS AS A MID LEVEL TROUGH PASSES BY TO THE
IMMEDIATE N OF THIS AREA.  SURFACE DEW POINTS HAVE INCREASED TO THE
LOW-MID 70S ACROSS SRN LA/MS...WHICH WILL CONTRIBUTE TO SUFFICIENT
INSTABILITY FOR STRONG/SEVERE STORMS.  GIVEN THE RICH MOISTURE AND
STRONG LOW-LEVEL SHEAR IN ADVANCE OF THE MESOLOW... EXPECT THREAT
FOR SUPERCELLS WITH A FEW TORNADOES AND ISOLATED DAMAGING WINDS TO
PERSIST THROUGH THE EARLY MORNING HOURS.


AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1 INCH...EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. 
MEAN STORM MOTION VECTOR 26025.


...THOMPSON

305,0933 321,0895 303,0895 290,0933

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 28, 8:15 PM CSTTornado WatchSPCAcadia, Allen, Beauregard, Calcasieu, Cameron, Evangeline and 3 more6 hr

Nearby

Tornado Watches in Louisiana, 2002Tornado Watches in Mississippi, 2002Every tornado watch in 2002

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.