000
AGNT40 KWNM 211803
MIMATN

MARINE WEATHER DISCUSSION FOR N ATLANTIC OCEAN
NWS OCEAN PREDICTION CENTER WASHINGTON DC
200 PM EDT TUE 21 MAY 2013

.FORECAST DISCUSSION: MAJOR FEATURES/WINDS/SEAS/SIGNIFICANT
.WEATHER FOR THE NORTH ATLANTIC OCEAN W OF 50W FROM 30N TO 50N.

LOW PRES CURRENTLY E OF THE NRN NT2 WATERS WILL CONTINUE MOVING
E TODAY WHILE SLOWLY WEAKENING. SRLY FLOW WILL THEN INCREASE
ACROSS THE OFFSHORE WATERS BY TONIGHT. THE SRLY FLOW WILL
CONTINUE TO INCREASE INTO THU AS LOW PRES MOVES JUST N OF NEW
ENGLAND AND A COLD FRONT APPROACHES THE E COAST OF THE U.S..
WINDS UP TO 30 KT ARE STILL EXPECTED ACROSS THE NT1 AND NRN NT2
WATERS BY THU AHEAD OF THE FRONT. LOW PRES IS EXPECTED TO
DEVELOP ALONG THE FRONT OFF THE COAST OF SRN NEW ENGLAND BY FRI
AND THEN MOVE OFF TO THE NE SAT. HIGH PRES WILL THEN BUILD
ACROSS THE OFFSHORE WATERS SUN. WINDS ACROSS PORTIONS OF THE NT1
AND NRN NT2 WATERS WILL COME CLOSE TO GALE FORCE ON FRI AHEAD OF
THE LOW...BUT FOR NOW WILL KEEP THE MAX WINDS AT 30 KT. THE
LATEST GFS AND ECMWF LOOK TO BE IN REASONABLE AGREEMENT. WILL
CONTINUE TO CARRY NO WARNINGS ACROSS THE OFFSHORE WATERS DURING
THE FORECAST PERIOD.

THE MULTIGRID WAVEWATCH III LOOKS REASONABLE WITH THE SEAS AND
WILL BE FOLLOWED FAIRLY CLOSELY DURING THE FORECAST PERIOD.

EXTRATROPICAL STORM SURGE GUIDANCE...N/A.

.WARNINGS/FORECAST CONFIDENCE...PRELIMINARY. ANY CHANGES WILL BE
COORDINATED THROUGH AWIPS 12 PLANET CHAT OR BY TELEPHONE:

.NT1 NEW ENGLAND WATERS...
.GULF OF MAINE...NONE.
.GEORGES BANK...NONE.
.SOUTH OF NEW ENGLAND...NONE.

.NT2 MID ATLC WATERS...
.HUDSON CANYON TO BALTIMORE CANYON...NONE.
.BALTIMORE CANYON TO HAGUE LINE...NONE.
.BALTIMORE CANYON TO HATTERAS CANYON...NONE.
.HATTERAS CANYON TO CAPE FEAR...NONE.
.CAPE FEAR TO 31N...NONE.
$$

.FORECASTER NOLT. OCEAN PREDICTION CENTER.