Alert archive / Kentucky / Tornado Watches in 2003

Tornado Watch 309

May 8, 200310 counties in Illinois; 12 counties in Indiana; 47 counties in Kentucky

The Storm Prediction Center issued this tornado watch at May 8, 2003, 5:15 PM CDT for 10 counties in Illinois; 12 counties in Indiana; 47 counties in Kentucky. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
May 8, 2003, 5:15 PM CDT (22:15 UTC)
Expired
May 8, 2003, 11:00 PM CDT
In force
6 hr
Issued by
the Storm Prediction Center
All 69 counties

Edwards County, IL, Gallatin County, IL, Hamilton County, IL, Hardin County, IL, Massac County, IL, Pope County, IL, Saline County, IL, Wabash County, IL, Wayne County, IL, White County, IL, Clark County, IN, Crawford County, IN, Dubois County, IN, Floyd County, IN, Gibson County, IN, Harrison County, IN, Perry County, IN, Pike County, IN, Posey County, IN, Spencer County, IN, Vanderburgh County, IN, Warrick County, IN, Adair County, KY, Allen County, KY, Barren County, KY, Breckinridge County, KY, Bullitt County, KY, Butler County, KY, Caldwell County, KY, Christian County, KY, Crittenden County, KY, Cumberland County, KY, Daviess County, KY, Edmonson County, KY, Graves County, KY, Grayson County, KY, Green County, KY, Hancock County, KY, Hardin County, KY, Hart County, KY, Henderson County, KY, Henry County, KY, Hopkins County, KY, Jefferson County, KY, Larue County, KY, Livingston County, KY, Logan County, KY, Lyon County, KY, Marion County, KY, Marshall County, KY, McCracken County, KY, McLean County, KY, Meade County, KY, Metcalfe County, KY, Muhlenberg County, KY, Nelson County, KY, Ohio County, KY, Oldham County, KY, Russell County, KY, Shelby County, KY, Simpson County, KY, Spencer County, KY, Taylor County, KY, Todd County, KY, Trigg County, KY, Union County, KY, Warren County, KY, Washington County, KY, Webster County, KY

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
May 8, 6:13 PM CDTTornado WarningPAHGibson, Vanderburgh47 min
May 8, 6:23 PM CDTTornado WarningPAHWarrick37 min
May 8, 6:49 PM CDTTornado WarningPAHSpencer41 min
May 8, 7:02 PM CDTSevere Thunderstorm WarningLMKPerry43 min
May 8, 7:31 PM CDTTornado WarningLMKPerry29 min
May 8, 7:34 PM CDTSevere Thunderstorm WarningLMKBreckinridge, Meade56 min
May 8, 7:44 PM CDTTornado WarningLMKBreckinridge46 min
May 8, 8:28 PM CDTSevere Thunderstorm WarningLMKHardin, Meade47 min
May 8, 9:17 PM CDTSevere Thunderstorm WarningLMKHardin28 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

Nashville Metro, TN (KBNA), launched 12:00Z, 10.3 hours before the alert went out and 192 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, Nashville Metro, TN at 12:00Z on 2003-05-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 360 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, Nashville Metro, TN at 12:00Z on 2003-05-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 107 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
360 J/kg
Mixed-layer CIN
-84 J/kg
Mixed-layer LCL
628 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
107 m²/s²
0-3 km storm-relative helicity
196 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.3

Open this sounding in Storm Lab

The text

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

000 
WWUS20 KWNS 082208
SEL9  
SPC WW 082215
ILZ000-INZ000-KYZ000-090400-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 309 
NWS STORM PREDICTION CENTER NORMAN OK 
615 PM EDT THU MAY 8 2003

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

       SOUTHEAST ILLINOIS
       SOUTHWEST INDIANA
       WESTERN AND CENTRAL KENTUCKY

EFFECTIVE THIS THURSDAY NIGHT FROM 615 PM UNTIL MIDNIGHT EDT.

TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 80 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 35 MILES NORTH OF PADUCAH KENTUCKY TO 55
MILES SOUTHEAST OF LOUISVILLE KENTUCKY.

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 303...WW 304...WW 305...WW
306...WW 307...WW 308...


DISCUSSION...COMPLEX OF SEVERE THUNDERSTORMS SRN IL WILL CONTINUE
DEVELOPING E/SE ACROSS E/W FRONTAL ZONE VICINITY OH RIVER. 
CONDITIONS REMAIN FAVORABLE FOR TORNADIC SUPERCELLS...PARTICULARLY
AS STORMS CROSS SURFACE BOUNDARY

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550.
MEAN STORM MOTION VECTOR 28035.


...HALES

382,0884 382,0850 364,0850 364,0884

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 8, 10:25 AM CDTTornado WatchSPCAlexander, Massac, Pulaski6 hr
May 8, 12:20 PM CDTSevere Thunderstorm WatchSPCAdams, Bond, Brown, Calhoun, Cass, Christian and 42 more4 hr
May 8, 12:24 PM CDTMesoscale DiscussionSPCMassac2 hr
May 8, 2:11 PM CDTMesoscale DiscussionSPCAdams, Bond, Brown, Calhoun, Christian, Clay and 35 more2 hr
May 8, 2:20 PM CDTMesoscale DiscussionSPCMassac85 min
May 8, 3:40 PM CDTTornado WatchSPCBond, Brown, Cass, Champaign, Christian, Clark and 34 more5 hr
May 8, 9:55 AM CDTMesoscale DiscussionSPCAllen, Barren, Butler, Calloway, Christian, Clinton and 14 more3 hr

Nearby

Tornado Watches in Kentucky, 2003Tornado Watches in Indiana, 2003Tornado Watches in Illinois, 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.