WATCHES: Severe Thunderstorm Watch Number 307

WWUS20 KWNS 191623
SEL7
SPC WW 191623
NJZ000-NYZ000-PAZ000-200000-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 307
NWS STORM PREDICTION CENTER NORMAN OK
1220 PM EDT THU MAY 19 2011

THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

CENTRAL AND NORTHERN NEW JERSEY
SOUTHERN TIER OF NEW YORK
EASTERN PENNSYLVANIA

EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 1220 PM UNTIL
800 PM EDT.

HAIL TO 1.5 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 70
STATUTE MILES EAST AND WEST OF A LINE FROM 55 MILES NORTHEAST OF
BINGHAMTON NEW YORK TO 30 MILES WEST SOUTHWEST OF PHILADELPHIA
PENNSYLVANIA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU7).

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.

DISCUSSION...THUNDERSTORMS WILL CONTINUE TO DEVELOP WITHIN A
DESTABILIZING AIR MASS ACROSS ERN PA AND SPREAD INTO NJ AND PARTS OF
SRN AND SERN NY THIS AFTERNOON AND EARLY EVENING. MULTICELLS
PRODUCING SEVERE HAIL AND STRONG WIND GUSTS WILL THE PRIMARY
THREATS.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 400. MEAN STORM
MOTION VECTOR 20020.

...PETERS/IMY

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