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URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH - NUMBER 509

NWS STORM PREDICTION CENTER NORMAN OK

904 PM EDT WED JUL 21 2010



THE NWS STORM PREDICTION CENTER HAS CANCELLED

SEVERE THUNDERSTORM WATCH NUMBER 509 ISSUED AT 245 PM EDT FOR PORTIONS OF



         OHIO

         PENNSYLVANIA

         WEST VIRGINIA

         LAKE ERIE

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