

000 

WWUS20 KWNS 271659

SEL6

SPC WW 271659

CTZ000-MAZ000-NJZ000-NYZ000-PAZ000-VTZ000-280000-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 456

NWS STORM PREDICTION CENTER NORMAN OK

100 PM EDT WED JUN 27 2007



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       WESTERN CONNECTICUT

       WESTERN MASSACHUSETTS

       NORTHERN NEW JERSEY

       CENTRAL AND EASTERN NEW YORK

       CENTRAL AND EASTERN PENNSYLVANIA

       SOUTHERN VERMONT



EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 100 PM UNTIL

800 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 95

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 20 MILES EAST

NORTHEAST OF PITTSFIELD MASSACHUSETTS TO 40 MILES SOUTHWEST OF

DUBOIS 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...SCATTERED THUNDERSTORMS ARE INCREASING IN COVERAGE

THROUGHOUT REGION OF MOIST/UNSTABLE AIR MASS ACROSS PARTS OF NY/PA.

THESE STORMS ARE LIKELY TO PERSIST THROUGH THE AFTERNOON AND SPREAD

EASTWARD INTO WESTERN NEW ENGLAND.  DESPITE RATHER WEAK VERTICAL

SHEAR...ISOLATED MULTICELL STORMS WILL BE CAPABLE OF DAMAGING WINDS

AND 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 500. MEAN STORM

MOTION VECTOR 27025.





...HART

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