Marine Interpretation Message
Issued by NWS

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AGNT40 KWNM 130120
MIMATN

MARINE WEATHER DISCUSSION FOR N ATLANTIC OCEAN
NWS OCEAN PREDICTION CENTER WASHINGTON DC
920 PM EDT SAT JUL 12 2014

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

A STNRY FNT EXTENDED NE FM CAPE FEAR OVR THE CNTRL AND NRN MID
ATLC WTRS WITH LGT WINDS OF 15 KT OR LESS ASSOC WITH THE FNT
WHICH DSIPTS LATER TNGT INTO SUN. ELSW HIGH PRES WAS ACRS THE ERN
NEW ENGLAND WTRS AND MOVS EWD TNGT INTO SUN. A CD FNT APPROACHES
FM THE NW THE NEW ENGLAND OFFSHR WTRS LATE MON. GFS/UKMET MDL
GUID HAS SWLY WINDS INADVOF FNT INCRSG TO 25 KT BY MON AND MON
NGT OVR THE NRN OFFSHR WTRS WITH THE ECMWF SLGTLY WKR. WL CONT TO
FAVOR THE GFS/UKMET WITH GFS STGR WITH WINDS AND WL TREND MORE
TOWARDS THE WKR UKMET WITH WINDS.

FOR THE UPDATED FCST PREV GRIDS LOOK GOOD WITH ONLY MINOR
ADJSTMTS.

-----------------------------------------------------------------
PREVIOUS DISCUSSION...


QUIET SUMMERTIME WX WILL CONTINUE TO PREVAIL THRUGH THE FORECAST
PERIOD WITH WINDS 25 KT OR LESS AND SEAS GENERALLY 8 FT OR LESS.
UPR RDG ALONG 50W WILL BUILD OVER THE NEXT FOUR DAYS...THEN
FLATTENING BUT XTNDG W AS STRNG UPR LOW PASSES NW OF THE AREA MID
WEEK. THE RESULT ON THE SFC IS MAINLY A S TO SW FLOW THROUGH MOST
OF THE FCST OVR THE WRN ATLC ON THE BACK SIDE OF THE LRG CNTRL
ATLC HIGH.

WEAK STNRY FRONT NE TO SW...EXTENDING FM NEAR 40N60W TO CAPE FEAR
THIS MRNG WILL DRFIT SE TNGT INTO SUN WHILE DSIPTG. ALONG THE
COAST N OF THE VA CAPES...SRLY FLOW WILL INCRS SUN AND SUN NGT AHD
OF WEAK SFC TROF. WINDS MAY REACH 25 KT AT TIMES...ESP MON WHEN
925 MB WINDS REACH MAX OF 40 KT. GIVEN THE WARM STABLE FLOW...WILL
MAINLY HOLD WINDS TO 20 KT. LGT TO MOD S TO SW FLOW WILL CONT MON
INTO TUE AS MID ATLC HIGH BUILDS AND WK COLD FRONT APPCHS.

THE GFS CONTS TO BE FASTER THEN UKMET/ECMWF/GEM IN
BRINGNIG FRONT OFFSHR TUE NGT AND WED...SO WL LEAN TWDS THE MORE
CONSISTENT UKMET. BY THU...GLOBAL MODELS IN GOOD AGREEMENT ON LOC
AND MVMNT OF WEAK FRONT PUSHING SE OVR THE NRN WATERS.

.SEAS...THE 12Z MULTIGRID WAVEWATCH INITIZLIED WELL THIS MRNG.
GDNC LOOKS GOOD...EXCEPT SEAS ARE ABOUT A FT OR TWO TOO HIGH IN
THE OVERDONE STHRLY FLOW OVER THE NTHRN WATERS...AND WILL BE
TRIMMED BACK 10 TO 15 KT.

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



.WARNINGS...PRELIMINARY.

.NT1 NEW ENGLAND WATERS...
     NONE.

.NT2 MID ATLC WATERS...
     NONE.

$$

.FORECASTER ROWLAND/PROSISE. OCEAN PREDICTION CENTER.


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