

123 

WWUS20 KWNS 071543

SEL7

SPC WW 071543

CTZ000-NJZ000-NYZ000-PAZ000-CWZ000-072300-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 477

NWS STORM PREDICTION CENTER NORMAN OK

1140 AM EDT SAT JUL 7 2012



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       WESTERN CONNECTICUT

       NORTHERN NEW JERSEY

       SOUTHEAST NEW YORK

       CENTRAL AND EASTERN PENNSYLVANIA

       COASTAL WATERS



EFFECTIVE THIS SATURDAY MORNING AND EVENING FROM 1140 AM UNTIL

700 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 60

STATUTE MILES EITHER SIDE OF A LINE FROM 20 MILES WEST NORTHWEST

OF WILLIAMSPORT PENNSYLVANIA TO 5 MILES SOUTHEAST OF BRIDGEPORT

CONNECTICUT.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU7).



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...BAND OF FAST MOVING STORMS OVER WRN NY HAS SHOWN SIGNS

OF INTENSIFYING AS IT MOVES INTO AN INCREASINGLY WARM/MOIST LOW

LEVEL AIR MASS.  STRONG WNWLY FLOW ABOVE THE GROUND /40-50 KT AT 3-4

KM BASED ON AREA VAD PROFILES/ WILL ENHANCE STORM MOTION AND

POTENTIAL FOR DAMAGING WIND GUSTS TO OCCUR.  ADDITIONAL STORMS MAY

DEVELOP ALONG THE SWRN FLANK OF THE SYSTEM AS THE CAP WEAKENS OVER

PARTS OF PA THIS AFTERNOON.



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 29040.





...WEISS

