

333 

WWUS20 KWNS 071506

SEL9

SPC WW 071506

CTZ000-MAZ000-NHZ000-NJZ000-NYZ000-PAZ000-RIZ000-VTZ000-CWZ000-07230

0-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 559

NWS STORM PREDICTION CENTER NORMAN OK

1105 AM EDT TUE JUL 7 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       CONNECTICUT

       MUCH OF MASSACHUSETTS

       SOUTHERN NEW HAMPSHIRE

       NORTHERN NEW JERSEY

       EASTERN NEW YORK

       EASTERN PENNSYLVANIA

       RHODE ISLAND

       SOUTHERN VERMONT

       COASTAL WATERS



EFFECTIVE THIS TUESDAY MORNING AND EVENING FROM 1105 AM UNTIL 700

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 100

STATUTE MILES EAST AND WEST OF A LINE FROM 40 MILES EAST

NORTHEAST OF GLENS FALLS NEW YORK TO 30 MILES SOUTH SOUTHWEST OF

NEW YORK CITY NEW YORK.  FOR A COMPLETE DEPICTION OF THE WATCH

SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU9).



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...THUNDERSTORMS ARE EXPECTED TO INTENSIFY THIS AFTERNOON

ACROSS PARTS OF NY/PA AND SOUTHERN NEW ENGLAND...IN EXIT REGION OF

APPROACHING UPPER JET.  BREAKS IN THE CLOUDS COUPLED WITH STEEP

LAPSE RATES AND COOL TEMPERATURES ALOFT WILL YIELD MODERATE

INSTABILITY FAVORABLE FOR LARGE HAIL IN STRONGER CELLS.



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 450. MEAN STORM

MOTION VECTOR 27030.





...HART

