

975 

WWUS20 KWNS 261632

SEL6

SPC WW 261632

NYZ000-PAZ000-LOZ000-262300-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 516

NWS STORM PREDICTION CENTER NORMAN OK

1235 PM EDT FRI JUN 26 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       CENTRAL AND EASTERN NEW YORK

       NORTHERN PENNSYLVANIA

       LAKE ONTARIO



EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 1235 PM 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 85

STATUTE MILES EAST AND WEST OF A LINE FROM 65 MILES NORTH

NORTHEAST OF UTICA NEW YORK TO 20 MILES SOUTHWEST OF WILLIAMSPORT

PENNSYLVANIA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU6).



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 515...



DISCUSSION...THUNDERSTORMS ARE INTENSIFYING RAPIDLY ACROSS WESTERN

NY...AND WILL SPREAD EASTWARD THIS AFTERNOON ACROSS THE WATCH AREA

AS UPPER TROUGH APPROACHES.  COOL TEMPERATURES ALOFT AND STRONG

HEATING WILL PROMOTE A RISK OF LARGE HAIL IN STRONGER CELLS...WHILE

STRENGTHENING WINDS ALOFT ALSO INCREASE THE RISK FOR ISOLATED

DAMAGING WIND GUSTS.



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

