Alert archive / Mississippi / Tornado Watches in 2001

Tornado Watch 787

October 13, 200121 counties in Alabama; 15 parishes in Louisiana; 35 counties in Mississippi

The Storm Prediction Center issued this tornado watch at Oct 13, 2001, 12:15 PM CDT for 21 counties in Alabama; 15 parishes in Louisiana; 35 counties in Mississippi. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Oct 13, 2001, 12:15 PM CDT (17:15 UTC)
Expired
Oct 13, 2001, 6:00 PM CDT
In force
6 hr
Issued by
the Storm Prediction Center
All 71 counties

Autauga County, AL, Baldwin County, AL, Bibb County, AL, Chilton County, AL, Choctaw County, AL, Clarke County, AL, Dallas County, AL, Greene County, AL, Hale County, AL, Jefferson County, AL, Marengo County, AL, Mobile County, AL, Monroe County, AL, Perry County, AL, Pickens County, AL, Shelby County, AL, Sumter County, AL, Talladega County, AL, Tuscaloosa County, AL, Washington County, AL, Wilcox County, AL, Ascension Parish, LA, Assumption Parish, LA, Jefferson Parish, LA, Lafourche Parish, LA, Livingston Parish, LA, Orleans Parish, LA, Saint Bernard Parish, LA, Saint Charles Parish, LA, Saint Helena Parish, LA, Saint James Parish, LA, Saint John the Baptist Parish, LA, Saint Tammany Parish, LA, St. Mary Parish, LA, Tangipahoa Parish, LA, Washington Parish, LA, Choctaw County, MS, Clarke County, MS, Covington County, MS, Forrest County, MS, George County, MS, Greene County, MS, Hancock County, MS, Harrison County, MS, Jackson County, MS, Jasper County, MS, Jefferson Davis County, MS, Jones County, MS, Kemper County, MS, Lamar County, MS, Lauderdale County, MS, Lawrence County, MS, Leake County, MS, Lowndes County, MS, Marion County, MS, Neshoba County, MS, Newton County, MS, Noxubee County, MS, Oktibbeha County, MS, Pearl River County, MS, Perry County, MS, Pike County, MS, Rankin County, MS, Scott County, MS, Simpson County, MS, Smith County, MS, Stone County, MS, Walthall County, MS, Wayne County, MS, Webster County, MS, Winston County, MS

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Oct 13, 12:18 PM CDTSevere Thunderstorm WarningJANClarke57 min
Oct 13, 12:21 PM CDTTornado WarningMOBClarke, Washington24 min
Oct 13, 12:28 PM CDTSevere Thunderstorm WarningLIXAscension, Livingston, Saint James, Saint John the Baptist62 min
Oct 13, 12:28 PM CDTSevere Thunderstorm WarningLIXJefferson, Lafourche, Saint Charles62 min
Oct 13, 12:28 PM CDTSevere Thunderstorm WarningLIXTangipahoa62 min
Oct 13, 12:31 PM CDTSevere Thunderstorm WarningJANJefferson Davis, Marion44 min
Oct 13, 12:35 PM CDTSevere Thunderstorm WarningJANLamar25 min
Oct 13, 12:40 PM CDTSevere Thunderstorm WarningMOBBaldwin35 min
Oct 13, 12:46 PM CDTSevere Thunderstorm WarningJANLeake, Scott, Smith59 min
Oct 13, 12:46 PM CDTSevere Thunderstorm WarningJANSimpson59 min
Oct 13, 12:46 PM CDTTornado WarningJANMarion29 min
Oct 13, 12:47 PM CDTTornado WarningMOBBaldwin28 min
Oct 13, 12:49 PM CDTSevere Thunderstorm WarningLIXSaint Tammany56 min
Oct 13, 12:49 PM CDTSevere Thunderstorm WarningLIXWashington56 min
Oct 13, 12:50 PM CDTSevere Thunderstorm WarningJANCovington, Jones55 min
Oct 13, 1:08 PM CDTTornado WarningJANCovington, Jefferson Davis, Lamar, Marion47 min
Oct 13, 1:10 PM CDTTornado WarningMOBEscambia, Monroe35 min
Oct 13, 1:14 PM CDTSevere Thunderstorm WarningLIXJefferson, Orleans, Saint Bernard61 min
Oct 13, 1:14 PM CDTSevere Thunderstorm WarningLIXLafourche, Saint Charles61 min
Oct 13, 1:18 PM CDTTornado WarningMOBBaldwin27 min
Oct 13, 1:24 PM CDTSevere Thunderstorm WarningJANJasper66 min
Oct 13, 1:36 PM CDTTornado WarningJANForrest39 min
Oct 13, 1:39 PM CDTSevere Thunderstorm WarningLIXSaint Tammany66 min
Oct 13, 1:39 PM CDTSevere Thunderstorm WarningLIXHarrison66 min
Oct 13, 1:41 PM CDTSevere Thunderstorm WarningJANChoctaw, Neshoba, Winston64 min
Oct 13, 1:41 PM CDTSevere Thunderstorm WarningJANNewton64 min
Oct 13, 1:44 PM CDTTornado WarningJANJasper31 min
Oct 13, 1:48 PM CDTSevere Thunderstorm WarningBMXGreene, Pickens, Sumter27 min
Oct 13, 1:51 PM CDTTornado WarningJANCovington, Jones39 min
Oct 13, 2:03 PM CDTTornado WarningBMXGreene, Pickens27 min
Oct 13, 2:04 PM CDTSevere Thunderstorm WarningJANWebster41 min
Oct 13, 2:09 PM CDTTornado WarningJANOktibbeha51 min
Oct 13, 2:10 PM CDTSevere Thunderstorm WarningBMXHale, Marengo, Perry35 min
Oct 13, 2:12 PM CDTSevere Thunderstorm WarningJANLauderdale48 min
Oct 13, 2:20 PM CDTSevere Thunderstorm WarningLIXOrleans, Saint Bernard25 min
Oct 13, 2:24 PM CDTSevere Thunderstorm WarningJANClarke, Jasper66 min
Oct 13, 2:31 PM CDTTornado WarningJANJones29 min
Oct 13, 2:33 PM CDTTornado WarningBMXDallas27 min
Oct 13, 2:34 PM CDTTornado WarningMOBBaldwin26 min
Oct 13, 2:34 PM CDTTornado WarningJANClarke, Jasper56 min
Oct 13, 2:36 PM CDTTornado WarningJANKemper24 min
Oct 13, 2:38 PM CDTSevere Thunderstorm WarningJANForrest37 min
Oct 13, 2:45 PM CDTSevere Thunderstorm WarningLIXHancock, Harrison, Pearl River45 min
Oct 13, 2:53 PM CDTTornado WarningMOBMonroe37 min
Oct 13, 2:56 PM CDTSevere Thunderstorm WarningJANKemper, Lowndes, Noxubee64 min
Oct 13, 2:56 PM CDTSevere Thunderstorm WarningJANLauderdale64 min
Oct 13, 2:56 PM CDTTornado WarningJANJones34 min
Oct 13, 2:59 PM CDTSevere Thunderstorm WarningBMXDallas, Perry46 min
Oct 13, 2:59 PM CDTSevere Thunderstorm WarningMOBPerry, Stone61 min
Oct 13, 2:59 PM CDTSevere Thunderstorm WarningMOBWayne61 min
Oct 13, 3:03 PM CDTTornado WarningJANLauderdale57 min
Oct 13, 3:16 PM CDTFlash Flood WarningJANClarke, Clay, Forrest, Jasper, Jones, Kemper and 8 more119 min
Oct 13, 3:26 PM CDTTornado WarningJANLowndes, Noxubee34 min
Oct 13, 3:30 PM CDTFlash Flood WarningLIXHancock2 hr
Oct 13, 3:31 PM CDTSevere Thunderstorm WarningJANClarke44 min
Oct 13, 3:34 PM CDTTornado WarningBMXSumter56 min
Oct 13, 3:38 PM CDTSevere Thunderstorm WarningBMXPickens52 min
Oct 13, 3:39 PM CDTTornado WarningJANClarke36 min
Oct 13, 3:44 PM CDTTornado WarningMOBWayne16 min
Oct 13, 3:49 PM CDTTornado WarningBMXBibb, Perry26 min
Oct 13, 4:01 PM CDTSevere Thunderstorm WarningMOBChoctaw, Washington59 min
Oct 13, 4:01 PM CDTSevere Thunderstorm WarningMOBGeorge, Perry, Stone59 min
Oct 13, 4:15 PM CDTSevere Thunderstorm WarningLIXHarrison60 min
Oct 13, 4:28 PM CDTSevere Thunderstorm WarningBMXGreene, Sumter47 min
Oct 13, 4:32 PM CDTSevere Thunderstorm WarningBMXPickens28 min
Oct 13, 5:00 PM CDTSevere Thunderstorm WarningLIXJefferson, Lafourche60 min
Oct 13, 5:01 PM CDTSevere Thunderstorm WarningMOBChoctaw, Clarke, Washington59 min
Oct 13, 5:01 PM CDTSevere Thunderstorm WarningMOBGeorge, Perry, Stone59 min
Oct 13, 5:31 PM CDTTornado WarningBMXTuscaloosa29 min

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 5.3 hours before the alert went out and 95 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, Slidell Radar S, LA at 12:00Z on 2001-10-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1483 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, Slidell Radar S, LA at 12:00Z on 2001-10-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 223 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
1483 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
513 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
223 m²/s²
0-3 km storm-relative helicity
295 m²/s²
Significant tornado parameter
1.8
Supercell composite
9.9

Open this sounding in Storm Lab

The text

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

597 
WWUS9 KMKC 131707
SEL7  

SEL7  
MKC WW 131658
ALZ000-LAZ000-MSZ000-CWZ000-132300-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 787
STORM PREDICTION CENTER NORMAN OK
1158 AM CDT SAT OCT 13 2001

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

   WESTERN AND CENTRAL ALABAMA                            
   EXTREME SOUTHEASTERN LOUISIANA                          
   EASTERN MISSISSIPPI                        
   COASTAL WATERS                     

EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 1215 PM UNTIL
600 PM CDT.

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 95 STATUTE MILES EAST AND WEST
OF A LINE FROM 40 MILES EAST SOUTHEAST OF HOUMA LOUISIANA TO 30
MILES NORTH OF TUSCALOOSA ALABAMA.

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 785.  WATCH NUMBER 785 WILL NOT BE IN EFFECT AFTER 1215 PM
CDT.  CONTINUE...WW 786...

DISCUSSION...LINE OF SEVERE STORMS CONTINUES TO MOVE EWD AT 25 KT
AS ISOLATED STRONG STORMS DEVELOP ACROSS SERN MS/SWRN AL AHEAD OF
LINE. MODERATE INSTABILITY AND STRONG SHEAR WILL BE FAVORABLE FOR
STORMS WITH WIND DAMAGE AND ISOLATED TORNADOES THROUGH MUCH OF THE
AFTERNOON. 

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 23030.

...IMY

333,0855 292,0882 292,0913 333,0891

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 13, 1:00 PM CDTTornado WatchSPCColbert, Cullman, Fayette, Franklin, Lamar, Lauderdale and 6 more5 hr
Oct 13, 2:00 PM CDTTornado WatchSPCBarbour, Bullock, Butler, Coffee, Conecuh, Covington and 9 more5 hr
Oct 13, 6:00 PM CDTTornado WatchSPCAutauga, Baldwin, Bibb, Blount, Butler, Calhoun and 45 more6 hr
Oct 12, 11:30 PM CDTTornado WatchSPCBienville, Bossier, Caddo, Claiborne, De Soto, Jackson and 4 more6 hr
Oct 13, 12:30 AM CDTTornado WatchSPCNatchitoches, Sabine, Vernon5 hr
Oct 13, 4:00 AM CDTTornado WatchSPCAcadia, Allen, Avoyelles, Beauregard, Bienville, Calcasieu and 28 more5 hr
Oct 13, 8:00 AM CDTTornado WatchSPCAscension, Assumption, East Baton Rouge, East Feliciana, Iberia, Iberville and 14 more5 hr
Oct 13, 9:30 AM CDTTornado WatchSPCAlcorn, Benton, Calhoun, Chickasaw, Clay, DeSoto and 15 more4 hr

Nearby

Tornado Watches in Mississippi, 2001Tornado Watches in Alabama, 2001Tornado Watches in Louisiana, 2001Every tornado watch in 2001

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.