

543 

WWUS20 KWNS 100622

SEL9

SPC WW 100622

INZ000-KYZ000-TNZ000-101400-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 129

NWS STORM PREDICTION CENTER NORMAN OK

120 AM CDT FRI APR 10 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       SOUTHERN INDIANA

       WESTERN AND CENTRAL KENTUCKY

       WESTERN AND MIDDLE TENNESSEE



EFFECTIVE THIS FRIDAY MORNING FROM 120 AM UNTIL 900 AM CDT.



HAIL TO 1 INCH 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 75

STATUTE MILES EAST AND WEST OF A LINE FROM 60 MILES SOUTHEAST OF

JACKSON TENNESSEE TO 45 MILES NORTHEAST OF EVANSVILLE INDIANA.

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 127...WW 128...



DISCUSSION...FAR WRN KY/TN SQLN EXPECTED TO CONTINUE ENE IN ZONE OF

STRONG ASCENT IN EXIT REGION OF 70 KT MID LVL JET STREAK.  AREA WIND

PROFILES...GRADUALLY INCREASING MOISTURE AVAILABILITY...AND

RELATIVELY LARGE LOW-LVL TEMP-DEW POINT SPREADS SUGGEST CONTINUED

CHANCE FOR LOCALLY DMGG WIND/MARGINALLY SVR HAIL...AND PERHAPS AN

ISOLD TORNADO.



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

TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS.

A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 400. MEAN STORM MOTION

VECTOR 26060.





...CORFIDI

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