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Displaying AFOS PIL: SEL5 Product Timestamp: 2003-05-06 22:40 UTC
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000
WWUS20 KWNS 062244
SEL5
SPC WW 062240
ILZ000-INZ000-KYZ000-MOZ000-070500-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 275
NWS STORM PREDICTION CENTER NORMAN OK
540 PM CDT TUE MAY 6 2003
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
SOUTHERN ILLINOIS
EXTREME SOUTHWEST INDIANA
WESTERN KENTUCKY
EAST AND SOUTHEAST MISSOURI
EFFECTIVE THIS TUESDAY AFTERNOON FROM 540 PM UNTIL MIDNIGHT CDT.
TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 90 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE TORNADO WATCH AREA IS ALONG AND 85 STATUTE MILES NORTH AND
SOUTH OF A LINE FROM 70 MILES SOUTH SOUTHWEST OF SAINT LOUIS
MISSOURI TO 10 MILES NORTH OF OWENSBORO 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 269...WW 270...WW 271...WW
272...WW 273...WW 274...
DISCUSSION...THE ENVIRONMENT ACROSS ERN MO/SRN IL/WRN KY APPEARS
FAVORABLE FOR THE MAINTENANCE OF THE INTENSE SUPERCELL/BOW ECHO
CLUSTER NOW ACROSS CENTRAL MO. EXPECT THESE STORMS TO MOVE ESEWD
ALONG THE OUTFLOW BOUNDARY FROM ERN MO TO SRN IL/WRN KY WHERE NEAR
70 DEWPOINTS ARE SUPPORTING MLCAPE NEAR 2500 J/KG...AND VERTICAL
SHEAR IS QUITE FAVORABLE FOR SUPERCELLS. THE DEGREE OF
INSTABILITY/SHEAR AND THE MESOSCALE ORGANIZATION OF THE STORMS
SUGGESTS THE POSSIBILITY OF VERY LARGE/DAMAGING HAIL AND INTENSE
OUTFLOW WINDS WITH THE EMBEDDED SUPERCELLS...IN ADDITION TO THE
THREAT OF TORNADOES.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 80 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 600.
MEAN STORM MOTION VECTOR 28035.
...THOMPSON
390,0905 390,0870 363,0870 363,0905