

000 

WWUS20 KWNS 102147

SEL3

SPC WW 102147

CTZ000-DEZ000-MAZ000-MDZ000-NHZ000-NJZ000-NYZ000-PAZ000-VTZ000-CWZ00

0-110500-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 503

NWS STORM PREDICTION CENTER NORMAN OK

545 PM EDT TUE JUN 10 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       MUCH OF WESTERN CONNECTICUT

       DELAWARE

       WESTERN MASSACHUSETTS

       EASTERN MARYLAND

       SMALL PART OF SOUTHERN NEW HAMPSHIRE

       NEW JERSEY

       MUCH OF EASTERN NEW YORK

       PARTS OF EASTERN PENNSYLVANIA

       VERMONT

       COASTAL WATERS



EFFECTIVE THIS TUESDAY AFTERNOON AND WEDNESDAY MORNING FROM 545

PM UNTIL 100 AM EDT.



HAIL TO 2.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80

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



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 70

STATUTE MILES EAST AND WEST OF A LINE FROM 35 MILES NORTH

NORTHEAST OF BURLINGTON VERMONT TO 20 MILES SOUTHEAST OF

SALISBURY MARYLAND.  FOR A COMPLETE DEPICTION OF THE WATCH SEE

THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU3).



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...THIS SEVERE THUNDERSTORM WATCH REPLACES

TORNADO WATCH NUMBER 499. WATCH NUMBER 499 WILL NOT BE IN EFFECT

AFTER 545 PM EDT. CONTINUE...WW 500...WW 501...WW 502...



DISCUSSION...SEVERE THUNDERSTORMS CONTINUE TO DEVELOP AND INCREASE

IN NUMBER AND INTENSITY AHEAD OF THE APPROACHING COLD FRONT AND

UPPER TROUGH.  WITH A VERY WARM AND UNSTABLE AIR MASS IN

PLACE...DAMAGING WINDS AND LARGE HAIL WILL BE COMMON IN STRONGEST

STORMS AS THEY CONTINUE EWD ACROSS THE WATCH THIS EVENING.



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM

MOTION VECTOR 24030.





...HALES

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