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WWUS20 KWNS 141638

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INZ000-KYZ000-MDZ000-OHZ000-PAZ000-WVZ000-LEZ000-150000-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 421

NWS STORM PREDICTION CENTER NORMAN OK

1235 PM EDT TUE JUL 14 2015



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  SOUTHEAST INDIANA

  NORTHERN KENTUCKY

  MARYLAND PANHANDLE

  OHIO

  WESTERN PENNSYLVANIA

  NORTHERN AND CENTRAL WEST VIRGINIA

  LAKE ERIE



* EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 1235 PM UNTIL

  800 PM EDT.



* PRIMARY THREATS INCLUDE...

  SCATTERED DAMAGING WIND GUSTS TO 70 MPH LIKELY

  ISOLATED VERY LARGE HAIL EVENTS TO 2 INCHES IN DIAMETER POSSIBLE

  A TORNADO OR TWO POSSIBLE



SUMMARY...SEVERE THUNDERSTORMS ARE ORGANIZING OVER NORTHWEST OHIO.

THIS ACTIVITY SHOULD EXPAND IN AREAL COVERAGE AND INTENSITY AS IT

PROPAGATES SOUTHEAST.  DAMAGING WINDS ARE THE PRIMARY SEVERE THREAT

AS STORMS SPREAD TOWARD THE OH RIVER.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 85

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 55 MILES WEST

NORTHWEST OF CINCINNATI OHIO TO 5 MILES NORTH NORTHEAST OF

LATROBE PENNSYLVANIA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE

THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU1).



PRECAUTIONARY/PREPAREDNESS ACTIONS...



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.



&&



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 29035.





...DARROW

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