

932 

WWUS20 KWNS 092038

SEL9

SPC WW 092038

ILZ000-KYZ000-MOZ000-100400-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 359

NWS STORM PREDICTION CENTER NORMAN OK

340 PM CDT TUE JUN 9 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       EXTREME SOUTHERN ILLINOIS

       EXTREME WESTERN KENTUCKY

       SOUTHEAST MISSOURI



EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 340 PM UNTIL

1100 PM CDT.



HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70

MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 45

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 50 MILES SOUTHWEST

OF FARMINGTON MISSOURI TO 10 MILES NORTHEAST OF PADUCAH KENTUCKY.

 FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU9).



REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE

FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY

DO PRODUCE TORNADOES.



OTHER WATCH INFORMATION...CONTINUE...WW 355...WW 356...WW

357...WW 358...



DISCUSSION...ISOLATED SUPERCELLS ALONG THE STALLED FRONT WILL DRIFT

EWD ACROSS SE MO FOR THE NEXT FEW HOURS.  THE INITIAL STORMS COULD

POSE A THREAT FOR AN ISOLATED/BRIEF TORNADO...BUT RELATIVELY WEAK

LOW-LEVEL SHEAR SUGGESTS THAT LARGE HAIL IS THE MAIN THREAT AND THAT

THE TORNADO THREAT WILL REMAIN LIMITED.  OTHERWISE...THE LONGER-TERM

SEVERE THREAT WILL LIKELY FOCUS ON MERGING CONVECTION IN CENTRAL MO

WHICH MAY EVOLVE INTO A FORWARD-PROPAGATING MCS WITH AN ACCOMPANYING

THREAT FOR DAMAGING WINDS AS IT APPROACHES SE MO/SRN IL/WRN KY LATER

THIS EVENING.



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM

MOTION VECTOR 27020.





...THOMPSON

