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URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 635

NWS STORM PREDICTION CENTER NORMAN OK

1120 AM EDT SAT SEP 8 2012



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       WESTERN CONNECTICUT

       PARTS OF WESTERN MASSACHUSETTS

       NORTHEAST NEW JERSEY

       SOUTHEAST NEW YORK

       COASTAL WATERS



EFFECTIVE THIS SATURDAY MORNING AND EVENING FROM 1120 AM UNTIL

900 PM EDT.



TORNADOES...HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS

TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 35 STATUTE

MILES EAST AND WEST OF A LINE FROM 10 MILES SOUTHWEST OF NEW YORK

CITY NEW YORK TO 10 MILES WEST NORTHWEST OF WESTFIELD

MASSACHUSETTS.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU5).



REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR

TORNADOES AND 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.



OTHER WATCH INFORMATION...CONTINUE...WW 634...



DISCUSSION...PRE-FRONTAL CONFLUENCE BAND AND MOIST AXIS WILL LIKELY

PERSIST INTO THE AFTERNOON...WITH OCCASIONAL THUNDERSTORM

DEVELOPMENT ALONG THE BAND IN RESPONSE TO LOW-LEVEL WARM ADVECTION

AND STRONGER SURFACE HEATING TO THE S.  VERTICAL SHEAR IS EXPECTED

TO INCREASE THROUGH THE AFTERNOON...ESPECIALLY INTO THE LOWER HUDSON

VALLEY...WHERE THE RISK FOR A FEW TORNADOES WILL GRADUALLY INCREASE.

MEANWHILE...A FRONTAL SQUALL LINE IS EXPECTED TO FORM FARTHER TO THE

W THIS AFTERNOON...AND MOVE INTO THE WATCH AREA BY THIS EVENING WITH

THE RISK FOR MORE WIDESPREAD DAMAGING WINDS...AS WELL AS TORNADOES

WITH CIRCULATIONS EMBEDDED IN THE LINE.



AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL

SURFACE AND ALOFT TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND

GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450.

MEAN STORM MOTION VECTOR 21035.





...THOMPSON

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