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URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 440

NWS STORM PREDICTION CENTER NORMAN OK

415 PM EDT WED JUN 8 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       UPSTATE NEW YORK

       VERMONT

       LAKE ONTARIO



EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 415 PM UNTIL

1000 PM EDT.



HAIL TO 1.5 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 100

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

BURLINGTON VERMONT TO 40 MILES SOUTH OF UTICA NEW YORK.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU0).



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 439...



DISCUSSION...INTENSE LINE OF THUNDERSTORMS MOVING EWD THROUGH ERN

ONTARIO AT 45 KT WILL MOVE INTO NWRN NY IN THE NEXT HOUR OR SO...AND

THEN SHIFT  EWD THROUGH NRN NY/VT AND DEVELOP SWD THROUGH THE WATCH

AREA. THE RAPID MOTION OF THIS LINE COMBINED WITH STRONG INSTABILITY

AND 30-50 KT UNIDIRECTIONAL WLY WINDS IN THE 850-300 MB LAYER ARE

SUGGESTIVE OF WIDESPREAD DAMAGING WINDS OCCURRING WITH THIS LINE.



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

TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM

MOTION VECTOR 28040.





...IMY

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