

000 

WWUS20 KWNS 281856

SEL2

SPC WW 281856

CTZ000-MAZ000-MEZ000-NHZ000-NJZ000-NYZ000-RIZ000-CWZ000-290200-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 462

NWS STORM PREDICTION CENTER NORMAN OK

255 PM EDT THU JUN 28 2007



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       CONNECTICUT

       MASSACHUSETTS

       MAINE

       SOUTHEAST NEW HAMPSHIRE

       NORTHEAST NEW JERSEY

       SOUTHEAST NEW YORK

       RHODE ISLAND

       COASTAL WATERS



EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 255 PM UNTIL

1000 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 85

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 10 MILES WEST

SOUTHWEST OF NEWARK NEW JERSEY TO 60 MILES SOUTH OF HOULTON

MAINE.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED

WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2).



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 461...



DISCUSSION...SCATTERED THUNDERSTORMS HAVE BEGUN TO FORM ALONG LOW

LEVEL HEATING/INSTABILITY AXIS FROM THE NYC AREA INTO EASTERN MAINE.

 FAVORABLE DEEP LAYER VERTICAL SHEAR AND STEEP LOW LEVEL LAPSE RATES

WILL PROMOTE ORGANIZED MULTICELL OR SUPERCELL STORMS CAPABLE OF

DAMAGING WINDS AND LARGE HAIL.  THREAT MAY PERSIST THROUGH MUCH OF

THE EVENING BEFORE MOVING OFFSHORE.



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 24030.





...HART

