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WWUS20 KWNS 071046

SEL6

SPC WW 071046

OHZ000-PAZ000-WVZ000-LEZ000-071600-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 436

NWS STORM PREDICTION CENTER NORMAN OK

650 AM EDT TUE JUN 7 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       LARGE PART OF NORTHEAST OHIO

       PARTS OF WESTERN PENNSYLVANIA

       SMALL PART OF WEST VIRGINIA PANHANDLE

       LAKE ERIE



EFFECTIVE THIS TUESDAY MORNING FROM 650 AM UNTIL NOON 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 55

STATUTE MILES NORTH AND SOUTH OF A LINE FROM MANSFIELD OHIO TO 15

MILES EAST NORTHEAST OF FRANKLIN PENNSYLVANIA.  FOR A COMPLETE

DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE

(WOUS64 KWNS WOU6).



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 STRONG/SEVERE THUNDERSTORMS DROPPING SSEWD

ACROSS LE EXPECTED TO REMAIN A THREAT OF DAMAGING WINDS AS IT MOVES

ACROSS THE WATCH AREA.  WITH 40KT OF DEEP LAYER SHEAR COUPLED WITH

INCREASING MOISTURE/INSTABILITY FROM THE W... CONDITIONS SHOULD

REMAIN FAVORABLE FOR SEVERE AT LEAST THRU MID MORNING.



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 550. MEAN STORM

MOTION VECTOR 32030.





...HALES

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