

507 

WWUS20 KWNS 232156

SEL7

SPC WW 232156

KYZ000-TNZ000-240400-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 347

NWS STORM PREDICTION CENTER NORMAN OK

500 PM CDT MON MAY 23 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       WESTERN AND CENTRAL KENTUCKY

       WESTERN AND MIDDLE TENNESSEE



EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 500 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 90

STATUTE MILES EAST AND WEST OF A LINE FROM 5 MILES WEST OF

OWENSBORO KENTUCKY TO 60 MILES SOUTHEAST OF JACKSON TENNESSEE.

FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU7).



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 338...WW 340...WW

341...WW 342...WW 343...WW 344...WW 345...WW 346...



DISCUSSION...QLCS NEAR THE MS RIVER WILL LIKELY PERSIST AND MOVE EWD

ACROSS WRN TN/KY...REACHING CENTRAL KY/MIDDLE TN TOWARD 00Z.  THE

CONVECTION WILL BE MAINTAINED BY A SWATH OF MODERATE INSTABILITY E

OF THE ONGOING STORMS...WITH 35-50 KT MIDLEVEL FLOW SUPPORTIVE OF

ORGANIZED STORM STRUCTURES CAPABLE OF PRODUCING DAMAGING WINDS AND

LARGE HAIL.



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 550. MEAN STORM

MOTION VECTOR 27035.





...THOMPSON

