Friday, June 26, 2009

WATCHES: Severe Thunderstorm Watch Number 516

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

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