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262 

WWUS20 KWNS 251940

SEL2

SPC WW 251940

MDZ000-OHZ000-PAZ000-WVZ000-LEZ000-260400-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 362

NWS STORM PREDICTION CENTER NORMAN OK

340 PM EDT TUE JUN 25 2013



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  WESTERN MARYLAND

  NORTHERN AND CENTRAL OHIO

  WESTERN PENNSYLVANIA

  NORTHERN WEST VIRGINIA

  LAKE ERIE



* EFFECTIVE THIS TUESDAY AFTERNOON FROM 340 PM UNTIL MIDNIGHT

  EDT.



* PRIMARY THREATS INCLUDE...

  SEVERAL DAMAGING WIND GUSTS TO 70 MPH LIKELY

  SEVERAL LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 70

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 30 MILES EAST OF

LATROBE PENNSYLVANIA TO 65 MILES NORTH NORTHWEST OF DAYTON OHIO.

FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU2).



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.



&&



OTHER WATCH INFORMATION...CONTINUE...WW 361...



DISCUSSION...STORM DEVELOPMENT IS NOW WELL UNDERWAY IN THE PRESENCE

OF MODERATE BOUNDARY LAYER INSTABILITY.  CONSOLIDATING COLD POOLS

MAY CONTRIBUTE TO FURTHER UPSCALE CONVECTIVE GROWTH...AND THE

EVOLUTION OF ONE OR TWO SMALL STORM CLUSTERS ACCOMPANIED BY THE RISK

FOR DAMAGING WIND GUSTS.  EAST SOUTHEASTWARD MOTION WILL BE ENHANCED

BY A BELT OF 20-30 KT WESTERLY LOWER/MID TROPOSPHERIC FLOW.



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 27030.





...KERR

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