Marine Interpretation Message
Issued by NWS

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000
AGNT40 KWNM 200003
MIMATN

MARINE WEATHER DISCUSSION FOR N ATLANTIC OCEAN
NWS OCEAN PREDICTION CENTER WASHINGTON DC
703 PM EST FRI DEC 19 2014

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

SUMMARY...A HIGH PRES RIDGE WILL BUILD OFSHR TONITE INTO SUN...
THEN SHIFT NE ACROSS THE NRN NT2 AND NT1 WTRS SUN NITE THRU TUE.
DVLPG LOW PRES WILL MOVE OFF THE SOUTH CAROLINA COAST SUN NITE...
DRIFT N OVER THE MID ATLC WATERS NEAR THE COAST MON INTO TUE...THEN
WEAKEN AS IT APRCHS THE NEW JERSEY COAST LATER TUE AND TUE NITE.
THE LOW WILL PULL A WARM FRONT N ACROSS THE NT2 WTRS SUN NITE THRU
TUE. THE WARM FNT WILL LIFT N OVER THE NT1 WTRS TUE NITE THRU WED
NITE. A STG COLD FRONT WILL MOVE E OFF THE SE COAST WED AFTN...SWEEP
OFSHR OF THE MID ATLC COAST LATE WED...THEN MOVE E OVER ALL OF THE
OFSHR AREAS WED NITE.

MODELS...THE ECMWF/GFS/UKMET ARE IN GUD AGREEMNT THRU THE FCST
PRD...EXCEPT THE ECMWF LOOKS UNDERDONE WITH THE S TO SE FLOW TUE
THRU WED NITE...AND THE GFS IS SLOWER THAN THE OTHER MDLS WITH THE
PROGRESSION OF THE COLD FNT TUE NITE THRU WED NITE. WILL USE THE
GFS 30M TO POPULATE THE WIND GRIDS THRU THE ENTIRE FCST PRD...BUT
WILL TIME SHIFT IT AHEAD SIX HOURS FOR TUE NITE THRU WED NITE SO
ITS TIMING MATCHES UP BETTER WITH THE OTHER MED RNG MDLS.

.SEAS...THE WNA VERSION OF MULTIGRID WW3 MDL INITIALIZED WITHIN A
FT OR TWO OF BUOY OBS OVER THE OFSHR WTRS. THE MWW3 AND ECMWF WAM
ARE IN CLOSE AGREEMNT INTO EARLY MON...SO WILL POPULATE THE SEA HT
GRIDS WITH THE MWW3 FOR TONITE INTO EARLY MON. THE MWW3 LOOKS
UNDERDONE BY A FEW FEET WITH THE SEA HTS FOR LATER MON THRU WED
NITE...SO THE ECMWF WAM WILL BE USED FOR THIS TIMEFRAME.

.EXTRATROPICAL STORM SURGE GUIDANCE...ESTOFS IS INDICATING A POS
SURGE IN THE 1.0 TO 1.5 FT RNG ALG THE MID ATLC AND NEW ENG COASTS
FOR LATE WED THRU INTO EARLY THU...ASSOCD WITH STG S TO SE FLOW
AHEAD OF A WARM FNT AND A COLD FNT.

.WARNINGS...PRELIMINARY.

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

.NT2 MID ATLC WATERS...
.ANZ915...HUDSON CANYON TO THE GREAT SOUTH CHANNEL...
     GALE POSSIBLE WED NIGHT.
.ANZ920...BALTIMORE CANYON TO THE GREAT SOUTH CHANNEL...
     GALE POSSIBLE WED NIGHT.
.ANZ905...THE GREAT SOUTH CHANNEL TO THE HAGUE LINE...
     GALE POSSIBLE WED INTO WED NIGHT.
.ANZ910...EAST OF THE GREAT SOUTH CHANNEL AND SOUTH OF 39N...
     GALE POSSIBLE WED INTO WED NIGHT.
.ANZ828...INNER WATERS FROM CAPE CHARLES LIGHT TO CURRITUCK BEACH LIGHT...
     GALE POSSIBLE WED NIGHT.
.ANZ925...OUTER WATERS FROM BALTIMORE CANYON TO HATTERAS CANYON...
     GALE POSSIBLE WED INTO WED NIGHT.
.ANZ830...INNER WATERS FROM CURRITUCK BEACH LIGHT TO CAPE HATTERAS...
     GALE POSSIBLE WED NIGHT.
.ANZ833...INNER WATERS FROM CAPE HATTERAS TO CAPE FEAR...
     GALE POSSIBLE WED NIGHT.
.ANZ930...OUTER WATERS FROM HATTERAS CANYON TO CAPE FEAR...
     GALE POSSIBLE WED NIGHT.
.ANZ835...INNER WATERS FROM CAPE FEAR TO 31N...
     GALE POSSIBLE WED INTO WED NIGHT.
.ANZ935...OUTER WATERS FROM CAPE FEAR TO 31N...
     GALE POSSIBLE WED INTO WED NIGHT.

$$

.FORECASTER SCOVIL. OCEAN PREDICTION CENTER.



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