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WWUS20 KWNS 042346

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URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 561

NWS STORM PREDICTION CENTER NORMAN OK

750 PM EDT SAT AUG 4 2012



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       EXTREME EASTERN INDIANA

       NORTHERN OHIO

       LAKE ERIE



EFFECTIVE THIS SATURDAY NIGHT AND SUNDAY MORNING FROM 750 PM

UNTIL 200 AM EDT.



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 65

STATUTE MILES EAST AND WEST OF A LINE FROM 30 MILES NORTHEAST OF

TOLEDO OHIO TO 45 MILES WEST OF COLUMBUS OHIO.  FOR A COMPLETE

DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE

(WOUS64 KWNS WOU1).



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 558...WW 559...WW 560...



DISCUSSION...CLUSTERS OF STRONG TO SEVERE THUNDERSTORMS CONTINUE TO

TRACK EASTWARD ACROSS NORTHERN IND TOWARD THE WATCH AREA.

SUFFICIENT INSTABILITY IS IN PLACE ACROSS NORTHERN OH FOR STORMS TO

MAINTAIN INTENSITY FOR A FEW MORE HOURS...BEFORE DIURNAL COOLING

SLOWLY WEAKENS THE STORMS.



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 27035.





...HART

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