Monday, June 17, 2013

WATCHES: Severe Thunderstorm Watch Number 321

WWUS20 KWNS 171718
SEL1
SPC WW 171718
CTZ000-MAZ000-NHZ000-NYZ000-RIZ000-VTZ000-CWZ000-180100-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 321
NWS STORM PREDICTION CENTER NORMAN OK
115 PM EDT MON JUN 17 2013

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
CONNECTICUT
MASSACHUSETTS
SOUTHERN NEW HAMPSHIRE
EASTERN NEW YORK
RHODE ISLAND
SOUTHERN VERMONT
COASTAL WATERS

* EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 115 PM UNTIL
900 PM EDT.

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

THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 70
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 60 MILES NORTH
NORTHWEST OF MONTICELLO NEW YORK TO 15 MILES EAST OF BOSTON
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...THUNDERSTORMS WILL CONTINUE TO INCREASE AND INTENSIFY
THIS AFTERNOON AHEAD OF A COLD FRONT. WHILE MOISTURE/INSTABILITY IS
RELATIVELY MODEST...STRONG LOW TO MID-LEVEL WESTERLY WINDS WILL
ALLOW FOR THE MATURATION OF EAST-SOUTHEASTWARD MOVING MULTICELLULAR
LINE SEGMENTS/SMALL BOWS CAPABLE OF WIND DAMAGE ASIDE FROM SEVERE
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 450. MEAN STORM
MOTION VECTOR 28030.


...GUYER

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