Marine Interpretation Message
Issued by NWS

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AGNT40 KWNM 060000
MIMATN

MARINE WEATHER DISCUSSION FOR N ATLANTIC OCEAN
NWS OCEAN PREDICTION CENTER WASHINGTON DC
700 PM EST THU MAR 5 2015

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

SUMMARY...A STG COLD FNT WILL MOVE SE ACROSS THE CNTRL AND SRN NT2
WTRS TONITE...THEN PASS SE OF THE NT2 AREA FRI. A STG HI PRES RIDGE
WILL BUILD OFSHR INTO THE WTRS BEHIND THE COLD FNT TONITE AND
FRI...THEN MOVE E OF THE OFSHR AREA FRI NITE. ANOTHER COLD FNT WILL
APRCH THE NEW ENG AND MID ATLC COASTS FROM THE NW SAT...THEN PASS SE
ACROSS THE OFSHR WTRS SAT NITE INTO SUN. ANOTHER RIDGE WILL MOVE E
ACROSS THE OFSHR WTRS LATE SUN INTO EARLY MON. A THIRD COLD FRONT
WILL MOVE E ACROSS THE WATERS MON. A THIRD RIDGE WILL BUILD IN FROM
THE W MON NITE...THEN MOVE E ACROSS THE NT1 AND NRN NT2 WTRS TUE
AND TUE NITE.

MODELS...THE MED RNG MDLS ARE IN GUD AGREEMNT THRU SAT...SO THE
REPRESENTATIVE GFS 30M SOLN WILL BE USED TO POPULATE THE WIND
GRIDS FOR THIS PRD. THE MED RNG MDLS ARE CONTG TO SHOW FAIRLY
SIGNIF DIFFS IN TIMING AND STRENGTH OF THE MAIN WX FTRS OVER THE
SAT NITE THRU TUE NITE TIMEFRAME. WILL USE A 50/50 BLEND OF THE
ECMWF/GFS FOR SAT NITE THRU TUE NITE AS A COMPRIMISE SOLN TO
RESOLVE THE MED RNG MDL DIFFS...SINCE IT HAS DECENT SUPPORT FROM
THE LATEST WPC MED RNG FCSTR GUIDANCE.

.SEAS...THE MULTIGRID WW3 MDL INITIALIZED WELL OVER THE OFSHR
WTRS...EXCEPT FOR THE GULF OF MAINE WHERE ITS SEA HTS ARE 1 TO 2
FT UNDERDONE IN MODERATE NW FLOW...SO THE MWW3 SEA HTS WILL BE
ADJUSTED UPWARDS FOR TONITE TO ACCOUNT FOR THIS. THE ECMWF WAM AND
MWW3 MDL GUIDANCE ARE IN GUD AGREEMNT FOR TONITE THRU SAT...AND
WILL USE THE MWW3 MDL FOR THE WAVE HT GRIDS FOR THIS PRD. THEN
WILL USE A 50/50 BLEND OF THE TWO WAVE MODELS FOR SAT NITE THRU
TUE NITE TO REFLECT THE MODEL PREFERENCES FOR THAT TIMEFRAME.

.EXTRATROPICAL STORM SURGE GUIDANCE...ESTOFS IS FCSTG A NEG SURGE
IN THE 1.0 TO 1.5 FT ALONG THE GEORGIA/SOUTH CAROLINA COAST FRI
NITE.

.WARNINGS...PRELIMINARY.

.NT1 NEW ENGLAND WATERS...
     NONE.

.NT2 MID ATLC WATERS...
.ANZ825...INNER WATERS FROM BALTIMORE CANYON TO CAPE CHARLES LIGHT...
     GALE TONIGHT.
.ANZ828...INNER WATERS FROM CAPE CHARLES LIGHT TO CURRITUCK BEACH LIGHT...
     GALE TONIGHT.
.ANZ925...OUTER WATERS FROM BALTIMORE CANYON TO HATTERAS CANYON...
     GALE TONIGHT.
.ANZ830...INNER WATERS FROM CURRITUCK BEACH LIGHT TO CAPE HATTERAS...
     GALE TONIGHT INTO FRI.
.ANZ833...INNER WATERS FROM CAPE HATTERAS TO CAPE FEAR...
     GALE TONIGHT INTO FRI.
.ANZ930...OUTER WATERS FROM HATTERAS CANYON TO CAPE FEAR...
     GALE TONIGHT.
.ANZ835...INNER WATERS FROM CAPE FEAR TO 31N...
     GALE TONIGHT INTO FRI.

$$

.FORECASTER SCOVIL. OCEAN PREDICTION CENTER.



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