Marine Interpretation Message
Issued by NWS

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000
AGNT40 KWNM 241901
MIMATN

MARINE WEATHER DISCUSSION FOR N ATLANTIC OCEAN
NWS OCEAN PREDICTION CENTER WASHINGTON DC
300 PM EDT THU 24 APR 2014

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

14Z AND 15Z HI RES ASCAT OVERPASSES RETURNED WIDESPREAD GALES
FROM GLF OF ME TO BALT CNYN...WITH HIGHEST WINDS TO 45 KT OVER
ERN GEORGES BANK AND NERN MOST MID ATLC WATERS. WITH MDLS IN
AGREEMENT THAT WINDS OVER THESE OUTER WATERS SHUD INCREASE
SLIGHTLY OVER NEXT FEW HRS SO PLAN TO KEEP STORM WRNGS OVER
ANZ905 AND ANZ910 ZONES THRU THE EVENING. GALES THEN STILL
APPEAR TO SHIFT E OF THE OFFSHORE ZONES BEFORE DAYBREAK FRI.
CONTINUE TO HAVE SLIGHLY ABOVE AVG CONFIDENCE WITH STORM WRNGS.
UPPER HGTS WILL BUILD ALONG COAST TNGT. 12Z MDLS HAVE COME INTO
SOMEWHAT BETTER AGREEMENT WITH SFC LOW DLVPG ALONG COLD FRONT
NEAR MID ATLC COAST FRI NGT. AS HAS BEEN THE CASE OVER PAST FEW
CYCLES THE 12Z ECMWF AND 12Z UKMET ARE SLIGHTLY STRONGER THAN
12Z GFS. 12Z ECMWF AND 12Z UKMET ARE IN EXCELLENT AGREEMENT WITH
TRACK/TIMING OF LOW SO AM FAVORING THIS CONSENSUS WHICH WILL
INCLUDE GALES OVER W AND SW QUADS OF LOW AS IT MOVES E ALONG
1000 FM OR NEAR 40N LATE FRI NGT INTO SUN. 12Z MDLS ALL INDICATE
UPPER LOW WILL SLOW JUST E OF OFFSHORE WATERS SUN INTO MON. SO
WILL INDICATE N TO NW WINDS INCREASING TO GALE OVER OUTER WATERS
N OF BALT CNYN MON INTO MON NGT. MDLS FINALLY KICK WEAKENING
UPPER SYSTEM E MON NGT. 12Z ECMWF CONTINUES TO LOOK REASONABLE
IN LIFTING STALLED FRONT OFF MID ATLC COAST NEAR CAPE FEAR N AS
WARM FRONT TUE... WITH WINDS N OF FRONT INCREASING TO 25 KT TUE
NGT.

00Z/06Z MULTIGRID WAVEWATCH III STILL APPEARS SLIGHTLY UNDERDONE
WITH SIG WV HGTS THIS AFTERNOON. WILL POPULATE WITH 00Z ECMWF
WAVE MDL AS A START WHICH IS HIGHER THAN MWW3 AND MAKE
ADJUSTMENTS FROM THERE.

.EXTRATROPICAL STORM SURGE GUIDANCE...LATEST WATER LVL OBS
INDICATE THAT 12Z ETSS HAS MUCH BETTER HANDLE ON NEGATIVE SURGE
THAN THE 12 ESTOFS.

.WARNINGS...PRELIMINARY.

.NT1 NEW ENGLAND WATERS...
.ANZ800...GULF OF MAINE...
     GALE TODAY INTO TONIGHT.
.ANZ805...GEORGES BANK EAST OF 68W...
     GALE TODAY INTO TONIGHT.
     GALE POSSIBLE SAT NIGHT.
.ANZ900...GEORGES BANK WEST OF 68W...
     GALE TODAY INTO TONIGHT.
.ANZ810...SOUTH OF NEW ENGLAND...
     GALE SAT.
     GALE POSSIBLE SAT NIGHT.
.ANZ815...SOUTH OF LONG ISLAND...
     GALE SAT.

.NT2 MID ATLC WATERS...
.ANZ915...HUDSON CANYON TO THE GREAT SOUTH CHANNEL...
     GALE TODAY INTO TONIGHT.
     GALE SAT.
     GALE POSSIBLE SAT NIGHT.
.ANZ920...BALTIMORE CANYON TO THE GREAT SOUTH CHANNEL...
     GALE TODAY INTO TONIGHT.
.ANZ905...THE GREAT SOUTH CHANNEL TO THE HAGUE LINE...
     STORM TODAY INTO TONIGHT.
     GALE POSSIBLE SAT NIGHT.
     GALE POSSIBLE MON.
.ANZ910...EAST OF THE GREAT SOUTH CHANNEL AND SOUTH OF 39N...
     STORM TODAY INTO TONIGHT.
     GALE POSSIBLE SAT NIGHT.
     GALE POSSIBLE MON.

$$

.FORECASTER CLARK. OCEAN PREDICTION CENTER.


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