Alert archive / Mississippi / Tornado Watches in 2002

Tornado Watch 801

December 23, 200229 parishes in Louisiana; 31 counties in Mississippi

The Storm Prediction Center issued this tornado watch at Dec 23, 2002, 6:00 PM CST for 29 parishes in Louisiana; 31 counties in Mississippi. It was in force for 9 hr.

The area

The outline as issued.

The facts

Issued
Dec 23, 2002, 6:00 PM CST (00:00 UTC)
Expired
Dec 24, 2002, 3:00 AM CST
In force
9 hr
Issued by
the Storm Prediction Center
All 60 counties

Ascension Parish, LA, Assumption Parish, LA, Catahoula Parish, LA, Concordia Parish, LA, East Baton Rouge Parish, LA, East Carroll Parish, LA, East Feliciana Parish, LA, Franklin Parish, LA, Iberia Parish, LA, Iberville Parish, LA, Livingston Parish, LA, Madison Parish, LA, Morehouse Parish, LA, Orleans Parish, LA, Pointe Coupee Parish, LA, Richland Parish, LA, Saint Charles Parish, LA, Saint Helena Parish, LA, Saint James Parish, LA, Saint John the Baptist Parish, LA, Saint Martin Parish, LA, Saint Tammany Parish, LA, St. Mary Parish, LA, Tangipahoa Parish, LA, Tensas Parish, LA, Washington Parish, LA, West Baton Rouge Parish, LA, West Carroll Parish, LA, West Feliciana Parish, LA, Adams County, MS, Amite County, MS, Attala County, MS, Claiborne County, MS, Copiah County, MS, Covington County, MS, Franklin County, MS, Hancock County, MS, Hinds County, MS, Holmes County, MS, Humphreys County, MS, Issaquena County, MS, Jefferson County, MS, Jefferson Davis County, MS, Lamar County, MS, Lawrence County, MS, Leake County, MS, Lincoln County, MS, Madison County, MS, Marion County, MS, Pearl River County, MS, Pike County, MS, Rankin County, MS, Scott County, MS, Sharkey County, MS, Simpson County, MS, Smith County, MS, Walthall County, MS, Warren County, MS, Wilkinson County, MS, Yazoo County, MS

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Dec 23, 7:05 PM CSTSevere Thunderstorm WarningLIXSaint Tammany, Tangipahoa, Washington40 min
Dec 23, 7:11 PM CSTSevere Thunderstorm WarningJANFranklin, Richland54 min
Dec 23, 7:21 PM CSTTornado WarningLIXSaint Tammany, Washington24 min
Dec 23, 7:38 PM CSTTornado WarningLIXWashington37 min
Dec 23, 8:07 PM CSTTornado WarningJANLamar28 min
Dec 23, 8:14 PM CSTTornado WarningLIXPearl River16 min
Dec 23, 9:05 PM CSTFlash Flood WarningJANEast Carroll, Franklin, Madison, Morehouse, Richland, West Carroll6 hr
Dec 23, 9:32 PM CSTSevere Thunderstorm WarningJANYazoo43 min
Dec 23, 10:56 PM CSTSevere Thunderstorm WarningJANHinds, Rankin29 min
Dec 23, 11:22 PM CSTFlash Flood WarningJANHinds, Rankin113 min
Dec 24, 12:31 AM CSTFlash Flood WarningJANAdams, Claiborne, Copiah, Franklin, Jefferson3 hr
Dec 24, 12:41 AM CSTSevere Thunderstorm WarningJANLamar, Marion29 min
Dec 24, 12:56 AM CSTTornado WarningLIXTangipahoa, Washington49 min
Dec 24, 1:08 AM CSTSevere Thunderstorm WarningJANCatahoula, Concordia42 min
Dec 24, 1:17 AM CSTSevere Thunderstorm WarningJANAdams38 min
Dec 24, 1:20 AM CSTFlash Flood WarningJANHinds, Rankin3 hr
Dec 24, 1:22 AM CSTSevere Thunderstorm WarningLIXPointe Coupee, West Feliciana53 min
Dec 24, 1:22 AM CSTSevere Thunderstorm WarningJANCopiah, Lincoln28 min
Dec 24, 1:42 AM CSTFlash Flood WarningJANForrest, Jones, Lamar, Marion4 hr
Dec 24, 1:42 AM CSTSevere Thunderstorm WarningJANClaiborne, Jefferson28 min
Dec 24, 1:45 AM CSTSevere Thunderstorm WarningJANSimpson30 min
Dec 24, 1:50 AM CSTSevere Thunderstorm WarningJANFranklin35 min
Dec 24, 2:02 AM CSTSevere Thunderstorm WarningJANCopiah33 min
Dec 24, 2:12 AM CSTSevere Thunderstorm WarningJANLincoln38 min
Dec 24, 2:32 AM CSTSevere Thunderstorm WarningJANHinds33 min
Dec 24, 2:43 AM CSTSevere Thunderstorm WarningJANRankin, Simpson32 min
Dec 24, 2:50 AM CSTSevere Thunderstorm WarningJANLawrence30 min
Dec 24, 2:54 AM CSTSevere Thunderstorm WarningJANJefferson Davis31 min

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 0.0 hours before the alert went out and 110 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, Jackson, MS at 00:00Z on 2002-12-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 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, Jackson, MS at 00:00Z on 2002-12-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 285 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
588 m above ground
0-6 km bulk shear
64 kt
0-1 km storm-relative helicity
285 m²/s²
0-3 km storm-relative helicity
398 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
WWUS20 KWNS 240002
SEL1  
SPC WW 240000
LAZ000-MSZ000-CWZ000-240900-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 801
STORM PREDICTION CENTER NORMAN OK
600 PM CST MON DEC 23 2002

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

   SOUTHERN AND EASTERN LOUISIANA                          
   WESTERN AND SOUTHERN MISSISSIPPI                        
   COASTAL WATERS                     

EFFECTIVE THIS MONDAY NIGHT AND TUESDAY MORNING FROM 600 PM UNTIL
300 AM CST.

 ...THIS IS A PARTICULARLY DANGEROUS SITUATION...
 
DAMAGING 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 125 STATUTE MILES NORTH AND
SOUTH OF A LINE FROM 55 MILES NORTH OF LAFAYETTE LOUISIANA TO 60
MILES SOUTHEAST 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...  CONTINUE...WW 799...WW 800...

DISCUSSION...SHALLOW WARM FRONT NOW ALONG THE LA COAST EXPECTED TO
CONTINUE MOVING SLOWLY NWD THROUGH LATE TONIGHT...WHILE OVERALL
WIND FIELD STRENGTHENS AHEAD OF STRONG UPPER TROUGH NOW ENTERING
CNTRL TX.  FARTHER N...DEEPER FRONTAL ZONE EXPECTED TO REMAIN
NEARLY STATIONARY FROM NEAR AEX TO NEAR GWO.  COMBINATION OF
INCREASING BOUNDARY LAYER MOISTURE...WEAK WARM ADVECTION AND
LENGTHENING HODOGRAPHS WILL CREATE FAVORABLE ENVIRONMENT FOR
SUPERCELLS WITH TORNADOES ALONG BOTH BOUNDARIES THROUGH EARLY
TUESDAY.    

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 500. 
MEAN STORM MOTION VECTOR 24040.

...CORFIDI

295,0892 291,0915 324,0915 333,0892

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Dec 23, 7:10 PM CSTTornado WatchSPCAcadia, Allen, Beauregard, Calcasieu, Caldwell, Cameron and 12 more8 hr
Dec 24, 2:30 AM CSTTornado WatchSPCJefferson, Lafourche, Livingston, Orleans, Plaquemines, Saint Bernard and 8 more7 hr
Dec 23, 8:20 PM CSTTornado WatchSPCClarke, Forrest, George, Greene, Harrison, Jackson and 5 more7 hr

Nearby

Tornado Watches in Mississippi, 2002Tornado Watches in Louisiana, 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.