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WWUS20 KWNS 280424

SEL7

SPC WW 280424

INZ000-KYZ000-OHZ000-281000-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 747

NWS STORM PREDICTION CENTER NORMAN OK

1220 AM EDT MON SEP 28 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       CENTRAL AND SOUTHEAST INDIANA

       FAR NORTHERN KENTUCKY

       WESTERN OHIO



EFFECTIVE THIS MONDAY MORNING FROM 1220 AM UNTIL 600 AM EDT.



HAIL TO 0.5 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 105

STATUTE MILES EAST AND WEST OF A LINE FROM 25 MILES NORTH OF

MUNCIE INDIANA TO 40 MILES EAST SOUTHEAST OF BLOOMINGTON INDIANA.

 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 745...WW 746...



DISCUSSION...VEERING LOW LVL WINDS UPSTREAM ACROSS IL LIKELY HAVE

CONTRIBUTED TO RECENT DEVELOPMENT OF STORMS IN W CNTRL IND.  THIS

ACTIVITY...AND POSSIBLE ADDITIONAL DEVELOPMENT SWD ALONG COLD FRONT

IN CNTRL IL /REF MCD 2040/...COULD POSE A THREAT FOR ISOLD DMGG

WINDS...MARGINALLY SVR HAIL...AND POSSIBLY A BRIEF TORNADO AS DEEP

FORCING FOR ASCENT INCREASES RAPIDLY ESEWD AHEAD OF AMPLIFYING MN/WI

UPR VORT.



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

TO 0.5 INCH. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 350. MEAN STORM

MOTION VECTOR 27055.





...CORFIDI

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