

000 

WWUS20 KWNS 211847

SEL5

SPC WW 211847

CTZ000-MAZ000-NJZ000-NYZ000-PAZ000-VTZ000-LOZ000-220200-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 435

NWS STORM PREDICTION CENTER NORMAN OK

250 PM EDT THU JUN 21 2007



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       FAR WESTERN CONNECTICUT

       FAR WESTERN MASSACHUSETTS

       NORTHERN NEW JERSEY

       NEW YORK

       NORTHEASTERN PENNSYLVANIA

       FAR SOUTHERN VERMONT

       LAKE ONTARIO



EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 250 PM UNTIL

1000 PM EDT.



HAIL TO 1.5 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 115

STATUTE MILES NORTH AND SOUTH OF A LINE FROM ROCHESTER NEW YORK

TO 30 MILES SOUTH SOUTHEAST OF PITTSFIELD MASSACHUSETTS.  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 433...WW 434...



DISCUSSION...SCATTERED THUNDERSTORMS WILL CONTINUE INCREASING AND

MOVING QUICKLY ESEWD ACROSS WW THROUGH THE EVENING.  THOUGH

INSTABILITY WILL REMAIN MARGINAL TO MODERATE...STRONG SHEAR WILL BE

SUPPORTIVE OF SUPERCELLS AND SMALL LINES.  WIND DAMAGE MAY BECOME

PRIMARY SEVERE THREAT...ALONG WITH LARGE HAIL.



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 400. MEAN STORM

MOTION VECTOR 31030.





...EVANS

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