WATCHES: Severe Thunderstorm Watch Number 435

WWUS20 KWNS 211847
SEL5
SPC WW 211847
CTZ000-MAZ000-NJZ000-NYZ000-PAZ000-VTZ000-LOZ000-220200-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 435
NWS STORM PREDICTION CENTER NORMAN OK
250 PM EDT THU JUN 21 2007

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

FAR WESTERN CONNECTICUT
FAR WESTERN MASSACHUSETTS
NORTHERN NEW JERSEY
NEW YORK
NORTHEASTERN PENNSYLVANIA
FAR SOUTHERN VERMONT
LAKE ONTARIO

EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 250 PM UNTIL
1000 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 115
STATUTE MILES NORTH AND SOUTH OF A LINE FROM ROCHESTER NEW YORK
TO 30 MILES SOUTH SOUTHEAST OF PITTSFIELD MASSACHUSETTS. FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU5).

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 433...WW 434...

DISCUSSION...SCATTERED THUNDERSTORMS WILL CONTINUE INCREASING AND
MOVING QUICKLY ESEWD ACROSS WW THROUGH THE EVENING. THOUGH
INSTABILITY WILL REMAIN MARGINAL TO MODERATE...STRONG SHEAR WILL BE
SUPPORTIVE OF SUPERCELLS AND SMALL LINES. WIND DAMAGE MAY BECOME
PRIMARY SEVERE THREAT...ALONG WITH LARGE HAIL.

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 31030.

..EVANS

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