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WWUS20 KWNS 050752

SEL5

SPC WW 050752

INZ000-KYZ000-TNZ000-051300-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 245

NWS STORM PREDICTION CENTER NORMAN OK

250 AM CDT SAT MAY 5 2012



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       SOUTHERN INDIANA

       WESTERN AND SOUTHERN KENTUCKY

       NORTHERN MIDDLE TENNESSEE



EFFECTIVE THIS SATURDAY MORNING FROM 250 AM UNTIL 800 AM CDT.



HAIL TO 1.5 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 50

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 45 MILES WEST

SOUTHWEST OF EVANSVILLE INDIANA TO 80 MILES EAST SOUTHEAST OF

BOWLING GREEN KENTUCKY.  FOR A COMPLETE DEPICTION OF THE WATCH

SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU5).



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 243...



DISCUSSION...TSTM LINE SEGMENT NOW NEAR THE IND/KY IN THE OWENSBORO

AREA HAS BECOME ORIENTED ROUGHLY W-E.  GIVEN PREVAILING LOW TO MID

LVL WIND FIELD /WITH MODEST W TO WNWLY MEAN FLOW AND SOME DEGREE OF

LOW TO MID LVL VEERING/...AND LOCATION OF STORMS ON ERN EDGE OF

BROAD EML...THIS ORIENTATION MAY ALLOW THE STORMS TO SOMEWHAT

INCREASE IN STRENGTH AS THE LINE MOVES GENERALLY SEWD.  MAIN SVR

THREAT WILL BE LOCALLY DMGG WIND FROM PRECIP-ENHANCED DOWNDRAFTS.

UPSTREAM AREA OF STORMS NOW IN SRN IL MAY BEHAVE SIMILARLY AS IT

MOVES SE INTO SW IND/WRN KY LATER THIS MORNING.



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

TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

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

MOTION VECTOR 31030.





...CORFIDI

