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URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 562

NWS STORM PREDICTION CENTER NORMAN OK

530 AM EDT SUN AUG 5 2012



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       CENTRAL AND EAST CENTRAL INDIANA

       WEST CENTRAL AND SOUTHWEST OHIO



EFFECTIVE THIS SUNDAY MORNING FROM 530 AM UNTIL NOON EDT.



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 20 MILES NORTHWEST

OF INDIANAPOLIS INDIANA TO 45 MILES EAST OF DAYTON OHIO.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU2).



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.



DISCUSSION...LINE OF STORMS MOVING INTO CENTRAL INDIANA HAS BECOME

BETTER ORGANIZED AND IS SHOWING SIGNS OF DEVELOPING INTO A BOW ECHO

SYSTEM AS IT MOVES EWD 35 KT.  RADAR IS INDICATING A SERIES OF

MESOVORTICES ALONG THE LEADING EDGE OF THE SYSTEM SUGGESTING

POTENTIAL FOR SMALL SWATHS OF DAMAGING WINDS.  SYSTEM MAY BEGIN TO

ACCELERATE EWD ALONG A REMNANT OUTFLOW BOUNDARY...AND IF THIS OCCURS

THERE WILL BE INCREASING LIKELIHOOD OF STRONG/SEVERE WIND GUSTS

SPREADING EWD INTO OH.



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 27035.





...WEISS

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