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741 

WWUS20 KWNS 091841

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CTZ000-DEZ000-MAZ000-MDZ000-NJZ000-NYZ000-PAZ000-RIZ000-CWZ000-10020

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URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 452

NWS STORM PREDICTION CENTER NORMAN OK

235 PM EDT THU JUN 9 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       MUCH OF CONNECTICUT

       NORTHERN DELAWARE

       MASSACHUSETTS

       FAR NORTHEASTERN MARYLAND

       NEW JERSEY

       SOUTHERN NEW YORK

       SOUTHEASTERN PENNSYLVANIA

       RHODE ISLAND

       COASTAL WATERS



EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 235 PM UNTIL

1000 PM EDT.



HAIL TO 2 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 EITHER SIDE OF A LINE FROM 20 MILES EAST OF BOSTON

MASSACHUSETTS TO 25 MILES WEST SOUTHWEST OF WILMINGTON DELAWARE.

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 450...WW 451...



DISCUSSION...A BAND OF SEVERE STORMS FROM NRN PA NEWD INTO VT/NH

WILL CONTINUE TO ORGANIZE INTO ONE OR MORE LINES OF STORMS AND MOVE

ESEWD INTO THE EVENING HOURS. A COLD POOL IS EXPECTED TO DEVELOP IN

ASSOCIATION WITH THESE LINE/S...WHICH WILL ENHANCE THE FORWARD

MOTION OF THE LINE. ONCE THE LINE/S BEGINS TO INCREASE THEIR FORWARD

SPEED...THE POTENTIAL FOR WIDESPREAD DAMAGING WINDS...INCLUDING

WINDS FROM 60 TO 80 MPH...ARE LIKELY. LARGE HAIL IS ALSO

EXPECTED...ESPECIALLY WITH STORMS THAT DEVELOP AHEAD OF THE LINE.



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

TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70

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

MOTION VECTOR 28030.





...IMY

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