WATCHES: Severe Thunderstorm Watch Number 271

WWUS20 KWNS 021537
SEL1
SPC WW 021537
CTZ000-MAZ000-MEZ000-NHZ000-NYZ000-VTZ000-030000-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 271
NWS STORM PREDICTION CENTER NORMAN OK
1135 AM EDT SUN JUN 2 2013

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
NORTHERN CONNECTICUT
MASSACHUSETTS
MAINE
NEW HAMPSHIRE
EASTERN NEW YORK
VERMONT

* EFFECTIVE THIS SUNDAY MORNING AND EVENING FROM 1135 AM UNTIL
800 PM EDT.

* PRIMARY THREATS INCLUDE...
SEVERAL DAMAGING WIND GUSTS TO 70 MPH LIKELY
SEVERAL LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE
A FEW TORNADOES POSSIBLE

THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 80
STATUTE MILES EAST AND WEST OF A LINE FROM 65 MILES NORTHWEST OF
HOULTON MAINE TO 40 MILES SOUTH SOUTHWEST OF PITTSFIELD
MASSACHUSETTS. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU1).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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...SEVERAL BANDS OF STRONG/SEVERE STORMS ARE EXPECTED TO
DEVELOP THROUGH THE AFTERNOON IN ADVANCE OF A STRONG SHORT WAVE
TROUGH LIFTING NEWD TOWARD THE NERN STATES. STRONG HEATING OF A
MOIST AIR MASS IS OCCURRING FROM ERN NY INTO NEW ENGLAND...WITH
MLCAPE EXPECTED TO REACH 1500 J/KG. WSR-88D VAD WINDS INDICATE SWLY
UNIDIRECTIONAL FLOW OF 30-40 KT IN THE LOW/MID LEVELS ACROSS THE
AREA PROVIDING FAVORABLE SHEAR FOR ORGANIZED LINE SEGMENTS
CONTAINING EMBEDDED BOW ECHOES WITH PRIMARY POTENTIAL FOR DAMAGING
WIND GUSTS. THERE IS ALSO THE POSSIBLE OF AN ISOLATED TORNADO OR
TWO...ESPECIALLY OVER PARTS OF NRN/CENTRAL ME.

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 500. MEAN STORM
MOTION VECTOR 24035.


...WEISS

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