Alert archive / Alabama / Tornado Watches in 2003

Tornado Watch 105

April 6, 200314 counties in Alabama; 13 counties in Mississippi

The Storm Prediction Center issued this tornado watch at Apr 6, 2003, 1:35 PM CDT for 14 counties in Alabama; 13 counties in Mississippi. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Apr 6, 2003, 1:35 PM CDT (18:35 UTC)
Expired
Apr 6, 2003, 7:00 PM CDT
In force
5 hr
Issued by
the Storm Prediction Center
All 27 counties

Bibb County, AL, Butler County, AL, Chilton County, AL, Choctaw County, AL, Clarke County, AL, Dallas County, AL, Greene County, AL, Hale County, AL, Marengo County, AL, Perry County, AL, Pickens County, AL, Sumter County, AL, Tuscaloosa County, AL, Wilcox County, AL, Choctaw County, MS, Clarke County, MS, Jasper County, MS, Jones County, MS, Kemper County, MS, Lauderdale County, MS, Lowndes County, MS, Neshoba County, MS, Newton County, MS, Noxubee County, MS, Oktibbeha County, MS, Wayne County, MS, Winston County, MS

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Apr 6, 2:17 PM CDTTornado WarningJANNewton43 min
Apr 6, 2:45 PM CDTSevere Thunderstorm WarningJANKemper, Neshoba60 min
Apr 6, 2:54 PM CDTTornado WarningJANLauderdale, Newton81 min
Apr 6, 3:23 PM CDTSevere Thunderstorm WarningBMXGreene, Pickens, Sumter67 min
Apr 6, 3:36 PM CDTTornado WarningBMXSumter39 min
Apr 6, 3:36 PM CDTSevere Thunderstorm WarningJANNoxubee44 min
Apr 6, 3:46 PM CDTSevere Thunderstorm WarningJANNewton44 min
Apr 6, 4:13 PM CDTTornado WarningBMXGreene, Sumter47 min
Apr 6, 4:14 PM CDTSevere Thunderstorm WarningJANLauderdale46 min
Apr 6, 4:16 PM CDTSevere Thunderstorm WarningJANLauderdale44 min
Apr 6, 4:32 PM CDTTornado WarningJANLauderdale43 min
Apr 6, 4:52 PM CDTTornado WarningBMXHale53 min
Apr 6, 4:54 PM CDTTornado WarningBMXSumter66 min
Apr 6, 4:58 PM CDTTornado WarningBMXGreene22 min
Apr 6, 6:06 PM CDTTornado WarningBMXHale9 min
Apr 6, 6:11 PM CDTTornado WarningBMXTuscaloosa49 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

Birmingham, AL (KBMX), launched 12:00Z, 6.6 hours before the alert went out and 145 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, Birmingham, AL at 12:00Z on 2003-04-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 43 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, Birmingham, AL at 12:00Z on 2003-04-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 220 square meters per square second.1939587897117Sfc1 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
43 J/kg
Mixed-layer CIN
-292 J/kg
Mixed-layer LCL
938 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
220 m²/s²
0-3 km storm-relative helicity
283 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.8

Open this sounding in Storm Lab

The text

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

000 
WWUS20 KWNS 061831
SEL5  
SPC WW 061835
ALZ000-MSZ000-070000-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 105
STORM PREDICTION CENTER NORMAN OK
135 PM CDT SUN APR 6 2003

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

   WESTERN ALABAMA                            
   EASTERN MISSISSIPPI                        

EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 135 PM UNTIL 700
PM CDT.

TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS ALONG AND 65 STATUTE MILES NORTH AND
SOUTH OF A LINE FROM 35 MILES WEST NORTHWEST OF MERIDIAN
MISSISSIPPI TO 25 MILES NORTHEAST OF SELMA 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...  CONTINUE...WW 100...WW 101...WW
102...WW 103...WW 104...

DISCUSSION...BOW ECHO AND CLUSTER OF SUPERCELLS NEAR JAN WILL
CONTINUE TO TRACK EASTWARD INTO WESTERN AL DURING THE NEXT FEW
HOURS.  OTHER STORMS MAY DEVELOP FARTHER EAST ALONG SURFACE
BAROCLINIC ZONE OVER CENTRAL AL.  SUFFICIENT VERTICAL SHEAR AND
INSTABILITY SUGGEST THE POTENTIAL FOR SUPERCELLS WITH LARGE HAIL
AND ISOLATED TORNADOES.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES.  EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 70 KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. 
MEAN STORM MOTION VECTOR 24035.

...HART

332,0891 333,0864 313,0864 313,0891

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 6, 9:19 AM CDTMesoscale DiscussionSPCLimestone, Madison116 min
Apr 6, 12:40 PM CDTMesoscale DiscussionSPCGreene, Hale, Marengo, Perry, Pickens, Sumter and 1 more2 hr
Apr 6, 1:20 PM CDTSevere Thunderstorm WatchSPCLauderdale6 hr
Apr 6, 2:56 PM CDTMesoscale DiscussionSPCBibb, Chilton, Dallas, Greene, Hale, Perry and 4 more2 hr
Apr 6, 6:23 PM CDTMesoscale DiscussionSPCBibb, Blount, Choctaw, Cullman, Fayette, Franklin and 14 more97 min
Apr 6, 6:50 PM CDTTornado WatchSPCAutauga, Bibb, Chilton, Choctaw, Cullman, Dallas and 12 more6 hr
Apr 6, 7:38 AM CDTMesoscale DiscussionSPCAdams, Claiborne, Copiah, Franklin, Hinds, Issaquena and 5 more97 min
Apr 6, 7:50 AM CDTSevere Thunderstorm WatchSPCBolivar, Hinds, Holmes, Humphreys, Issaquena, Leflore and 5 more5 hr
Apr 6, 10:00 AM CDTMesoscale DiscussionSPCAttala, Bolivar, Carroll, Coahoma, Grenada, Hinds and 12 more2 hr
Apr 6, 10:20 AM CDTMesoscale DiscussionSPCAttala, Bolivar, Calhoun, Carroll, Chickasaw, Choctaw and 36 more55 min
Apr 6, 10:30 AM CDTTornado WatchSPCAdams, Attala, Carroll, Claiborne, Copiah, Covington and 23 more6 hr
Apr 6, 11:05 AM CDTSevere Thunderstorm WatchSPCAlcorn, Benton, Bolivar, Calhoun, Chickasaw, Coahoma and 15 more5 hr
Apr 6, 12:03 PM CDTMesoscale DiscussionSPCClaiborne, Issaquena, Warren117 min
Apr 6, 12:27 PM CDTMesoscale DiscussionSPCBenton, Coahoma, DeSoto, Lafayette, Marshall, Panola and 8 more2 hr
Apr 6, 3:45 PM CDTTornado WatchSPCAdams, Amite, Attala, Carroll, Claiborne, Copiah and 23 more5 hr
Apr 6, 5:35 PM CDTMesoscale DiscussionSPCAdams, Amite, Attala, Carroll, Claiborne, Copiah and 25 more115 min

Nearby

Tornado Watches in Alabama, 2003Tornado Watches in Mississippi, 2003Every tornado watch in 2003

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.