Wednesday, May 16, 2012

WATCHES: Severe Thunderstorm Watch Number 280

WWUS20 KWNS 161718
SEL0
SPC WW 161718
CTZ000-MAZ000-MEZ000-NHZ000-NYZ000-PAZ000-VTZ000-170100-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 280
NWS STORM PREDICTION CENTER NORMAN OK
120 PM EDT WED MAY 16 2012

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

WESTERN CONNECTICUT
WESTERN AND CENTRAL MASSACHUSETTS
WESTERN MAINE
MUCH OF NEW HAMPSHIRE
EASTERN NEW YORK
NORTHEAST PENNSYLVANIA
VERMONT

EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 120 PM UNTIL
900 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 110
STATUTE MILES EAST AND WEST OF A LINE FROM 25 MILES NORTHWEST OF
NEWPORT VERMONT TO 20 MILES SOUTH OF MONTICELLO 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.

DISCUSSION...SCATTERED THUNDERSTORMS ARE EXPECTED TO INTENSIFY THIS
AFTERNOON ACROSS MUCH OF EASTERN NY/NORTHEAST PA AND WESTERN NEW
ENGLAND AS AN UPPER TROUGH APPROACHES FROM THE WEST. STRONG DAYTIME
HEATING COUPLED WITH A MOIST BOUNDARY LAYER WILL RESULT IN MODERATE
CAPE VALUES AND LITTLE CINH. SHEAR PROFILES ARE FAVORABLE FOR
ORGANIZED/SUPERCELL STORMS CAPABLE OF DAMAGING WINDS AND HAIL.

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 26030.


...HART

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