Marine Interpretation Message
Issued by NWS

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000
AGNT40 KWNM 200233
MIMATN

MARINE WEATHER DISCUSSION FOR N ATLANTIC OCEAN
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1033 PM EDT FRI SEP 19 2014

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

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PREVIOUS DISCUSSION...

LIGHTNING DATA PRODUCTS SHOWS AREAS OF ISOLD/SCTRD SHWRS/TSTMS
OVER THE WRN PART OF THE FAR SRN NT2 WTRS...MAINLY NEAR THE SC/GA
CST THIS AFTN. AT 19/15Z THIS MRNG T.S. EDOUARD WAS AT 39.5N
38.3W. SEE NHC ADVISORY FOR THE LATEST INFO. LATST HI-RES ASCAT
PASS AT 1445Z HAD NO WINDS ABOVE 20 KT ACRS THE OFSHR WTRS...EXCPT
FOR GUSTS INTO THE 25 TO 30 KT RNG IN TSTMS OVER THE SW PART OF
THE NT2 AREA. A COLD FNT EXTNDS NE TO SW ACROSS THE NRN NT2 WTRS
THIS AFTN. A STG HI PRES RDG WILL BUILD INTO THE WATERS N OF THE
FNT LATER TODAY INTO SAT...THEN SHIFT E OF THE OFSHR AREAS SAT
NIGHT. A DVLPG LOW WILL FORM OFF THE CAROLINA CST SAT NIGHT...PASS
NE ACROSS THE WATERS SUN...THEN MOVE OFF TO THE NE SUN NITE AND
MON. ANOTHER COLD FRONT WILL APPROACH THE MID ATLC COAST FROM THE
W LATE SUN INTO SUN NIGHT...THEN MOVE SE ACROSS THE OFSHR WTRS MON
AND MON NIGHT. ANOTHER STG RIDGE WILL BUILD OVER THE OFSHR AREAS FROM
THE NW TUE THRU WED NITE.

MODELS...AS WAS THE CASE WITH THE 00Z RUN...THE MED RNG MDLS ARE
CONTG TO TREND TOWARDS THE GFS SOLN ON THE 12Z RUN...PARTICULARLY
REGARDING THE TRAJECTORY/TIMING/STRENGTH OF THE DVLPG LOW THAT
FORMS OFF THE CAROLINA CST SAT NITE AND MOVES NE OVER THE NT2 WTRS
SUN. SO AS WAS DONE EARLIER...WILL USE THE GFS 10M TO POPULATE
THE WIND GRIDS. AM NOT PLANNING TO MAKE ANY SIGNIF CHANGES TO THE
CURRENT FCST TREND.

SEAS...BASED ON THE 18Z RA1 SEA HT ANALYSIS THE SEAS ARE IN THE 3
TO 5 FT RNG ACROSS THE OFSHR WTRS...EXCEPT IN THE 5 TO 7 FT RNG
OVER THE SRN NEW ENG OFSHR AREAS. THE 12Z MULTIGRID WW3 MDL
INITIALIZED WELL VERSUS THE BUOY OBS...AND HAS GUD SUPPORT OVERALL
FROM THE ECMWF WAM THRU THE FCST PRD...EXCPT THE MWW3 BLDS THE
SEAS ABOUT 5 TO 7 FT HIGHER IN THE S TO SW FLOW AHD OF THE COLD
FNT OVER THE NT2 WTRS ON SUN. WILL USE A 70/30 BLEND OF THE 12Z
MWW3/ECMWF WAM TO POPULATE THE WAVE HT GRIDS.

.EXTRATROPICAL STORM SURGE GUIDANCE...N/A.


.WARNINGS...PRELIMINARY.

.NT1 NEW ENGLAND WATERS...
.ANZ805...GEORGES BANK WEST OF 68W...
     GALE POSSIBLE SUN NIGHT.
.ANZ900...GEORGES BANK EAST OF 68W...
     GALE POSSIBLE SUN NIGHT.
.ANZ810...SOUTH OF NEW ENGLAND...
     GALE POSSIBLE SUN NIGHT.

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

$$

.FORECASTER MUSONDA/SCOVIL. OCEAN PREDICTION CENTER.



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