Alert archive / Mississippi / Tornado Watches in 2002

Tornado Watch 752

November 10, 200212 parishes in Louisiana; 23 counties in Mississippi

The Storm Prediction Center issued this tornado watch at Nov 10, 2002, 9:20 PM CST for 12 parishes in Louisiana; 23 counties in Mississippi. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued: Nov 10, 2002, 9:20 PM CST (03:20 UTC)
Expired: Nov 11, 2002, 3:00 AM CST
In force: 6 hr
Issued by: the Storm Prediction Center

All 35 counties

Ascension Parish, LA, East Baton Rouge Parish, LA, East Feliciana Parish, LA, Iberville Parish, LA, Livingston Parish, LA, Saint Helena Parish, LA, Saint John the Baptist Parish, LA, Saint Tammany Parish, LA, Tangipahoa Parish, LA, Washington Parish, LA, West Baton Rouge Parish, LA, West Feliciana Parish, LA, Adams County, MS, Amite County, MS, Covington County, MS, Forrest County, MS, Franklin County, MS, George County, MS, Greene County, MS, Hancock County, MS, Harrison County, MS, Jackson County, MS, Jefferson Davis County, MS, Jones County, MS, Lamar County, MS, Lawrence County, MS, Lincoln 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

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
Nov 10, 11:22 PM CST	Severe Thunderstorm Warning	JAN	Marion	43 min
Nov 10, 11:59 PM CST	Severe Thunderstorm Warning	LIX	Saint Tammany, Tangipahoa, Washington	61 min
Nov 11, 12:06 AM CST	Severe Thunderstorm Warning	JAN	Covington, Jones	49 min
Nov 11, 12:55 AM CST	Severe Thunderstorm Warning	JAN	Jones	20 min
Nov 11, 1:00 AM CST	Severe Thunderstorm Warning	LIX	Saint John the Baptist, Saint Tammany, Tangipahoa, Washington	60 min
Nov 11, 1:17 AM CST	Severe Thunderstorm Warning	JAN	Forrest, Lamar	28 min

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 3.3 hours before the alert went out and 105 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 9958 J/kg
Mixed-layer CIN: -593 J/kg
Mixed-layer LCL: 1640 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 162 m²/s²
0-3 km storm-relative helicity: 191 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 11.8

Open this sounding in Storm Lab

The text

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

000 
WWUS20 KWNS 110318
SEL2  
SPC WW 110320
LAZ000-MSZ000-CWZ000-110900-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 752
STORM PREDICTION CENTER NORMAN OK
920 PM CST SUN NOV 10 2002

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

   SOUTHEAST LOUISIANA                          
   SOUTHERN MISSISSIPPI                        
   AND ADJACENT COASTAL WATERS                     

EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 920 PM UNTIL
300 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 55 STATUTE MILES NORTH AND
SOUTH OF A LINE FROM 30 MILES NORTHWEST OF BATON ROUGE LOUISIANA TO
55 MILES NORTHEAST OF GULFPORT 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 748...WW 749...WW
750...WW 751...

DISCUSSION...THUNDERSTORMS ARE INCREASING OVER SOUTH CENTRAL
LA...IN REGION OF FAVORABLE VERTICAL SHEAR AND AMPLE MOISTURE. 
THESE STORMS ARE EXPECTED TO BECOME SEVERE DURING THE NEXT FEW
HOURS...WITH THE POTENTIAL FOR ISOLATED TORNADOES.

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 25035.

...HART

313,0913 314,0882 301,0882 300,0913

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Nov 11, 2:10 AM CST	Tornado Watch	SPC	Orleans, Saint Tammany	5 hr
Nov 10, 10:05 PM CST	Tornado Watch	SPC	Clarke, Jasper, Kemper, Lauderdale, Newton, Simpson and 1 more	6 hr

Nearby

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