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836 

WWUS20 KWNS 231736

SEL5

SPC WW 231736

OHZ000-PAZ000-LEZ000-240100-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 395

NWS STORM PREDICTION CENTER NORMAN OK

140 PM EDT WED JUN 23 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       MUCH OF NORTHERN AND CENTRAL OHIO

       PARTS OF WESTERN PENNSYLVANIA

       LAKE ERIE



EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 140 PM UNTIL

900 PM EDT.



HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80

MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 65

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 15 MILES NORTHEAST

OF FRANKLIN PENNSYLVANIA TO 25 MILES SOUTH SOUTHWEST OF FINDLAY

OHIO.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED

WATCH OUTLINE UPDATE (WOUS64 KWNS WOU5).



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 394...



DISCUSSION...THUNDERSTORMS ARE INCREASING IN NUMBER AND INTENSITY

PRIMARILY ALONG THE BOUNDARY ACROSS NWRN OH.  WITH 40-50 KT OF SHEAR

ALONG WITH MLCAPES AOA 3000 J/KG...SEVERE THUNDERSTORMS ARE EXPECTED

DEVELOPING INTO SHORT LINE SEGMENTS/BOWS.  DAMAGING WINDS WILL BE

THE PRIMARY THREAT.



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM

MOTION VECTOR 27035.





...HALES

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