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000 

WWUS20 KWNS 012021

SEL6

SPC WW 012021

OHZ000-PAZ000-WVZ000-LEZ000-020300-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 206

NWS STORM PREDICTION CENTER NORMAN OK

325 PM CDT TUE MAY 1 2007



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       EASTERN OHIO

       WESTERN PENNSYLVANIA

       PART OF WEST VIRGINIA PAN HANDLE

       LAKE ERIE



EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 325 PM UNTIL

1000 PM CDT.



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 60

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 40 MILES WEST

SOUTHWEST OF AKRON OHIO TO 50 MILES EAST SOUTHEAST 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.



OTHER WATCH INFORMATION...CONTINUE...WW 205...



DISCUSSION...SEVERE THUNDERSTORMS DEVELOPING OVER NWRN OH/NRN IND

WILL CONTINUE EWD ACROSS WATCH WHERE AIR MASS NOW FAVORABLY SHEARED

AND MODERATELY UNSTABLE.  PRIMARY THREAT WILL BE LARGE

HAIL...PARTICULARLY ASSOCIATED WITH ISOLATED SUPERCELLS AND DAMAGING

WINDS AS STORMS EVOLVE INTO SHORT LINES/BOWS.



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 26040.





...HALES

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