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000 

WWUS20 KWNS 271605

SEL0

SPC WW 271605

CTZ000-MAZ000-MEZ000-NHZ000-NJZ000-NYZ000-PAZ000-VTZ000-CWZ000-28000

0-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 760

NWS STORM PREDICTION CENTER NORMAN OK

1200 PM EDT SUN JUL 27 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       CONNECTICUT

       WESTERN AND CENTRAL MASSACHUSETTS

       SOUTHWESTERN MAINE

       NEW HAMPSHIRE

       NORTHEASTERN NEW JERSEY

       EAST-CENTRAL AND SOUTHEASTERN NEW YORK

       NORTHEASTERN PENNSYLVANIA

       VERMONT EXCEPT NORTHWEST PORTIONS

       COASTAL WATERS



EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM NOON UNTIL 800

PM 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 90

STATUTE MILES EAST AND WEST OF A LINE FROM 60 MILES WEST OF ISLIP

NEW YORK TO 20 MILES EAST NORTHEAST OF NEWPORT VERMONT.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU0).



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 759...



DISCUSSION...INCREASING POTENTIAL FOR SVR THROUGH AFTERNOON

ALONG/AHEAD OF SFC COLD FRONT AS BOUNDARY LAYER AIR MASS

HEATS/MIXES/DESTABILIZES FROM NERN PA ACROSS NRN PORTIONS WW...AND

COMBINATION OF HEATING/WAA AIDS AIR MASS RECOVERY OVER SRN NEW

ENGLAND.  MEANWHILE DEEP-LAYER SHEAR AND LARGE SCALE ASCENT EACH ARE

FCST TO INCREASE WITH APCH OF MID-UPPER TROUGH.



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 26025.





...EDWARDS/THOMPSON

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