

952 

WWUS20 KWNS 172038

SEL4

SPC WW 172038

INZ000-KYZ000-TNZ000-180200-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 444

NWS STORM PREDICTION CENTER NORMAN OK

335 PM CDT WED JUN 17 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       SOUTHWESTERN INDIANA

       WESTERN KENTUCKY

       PARTS OF MIDDLE TENNESSEE



EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 335 PM UNTIL

900 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 80

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

OF FORT CAMPBELL KENTUCKY TO 30 MILES EAST SOUTHEAST OF BOWLING

GREEN KENTUCKY.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU4).



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 439...WW 440...WW

441...WW 442...WW 443...WW 445...



DISCUSSION...THUNDERSTORMS WILL CONTINUE TO DEVELOP IN THE VICINITY

OF A SURFACE BOUNDARY EXTENDING WWD FROM CENTRAL KY INTO FAR SRN IL

WHERE THE AIR MASS HAS BECOME VERY UNSTABLE /MLCAPE 3000-4000 J/KG/.

STRENGTHENING DEEP LAYER SHEAR ACROSS THIS REGION WILL SUPPORT

ORGANIZED...SPLITTING STORMS WITH HAIL AND DAMAGING WINDS THE

PRIMARY THREATS AS ACTIVITY SPREADS ESEWD ACROSS THE WATCH.



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 31030.





...PETERS/HALES

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