Marine Interpretation Message
Issued by NWS

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000
AGNT40 KWNM 231207
MIMATN

MARINE WEATHER DISCUSSION FOR N ATLANTIC OCEAN
NWS OCEAN PREDICTION CENTER WASHINGTON DC
807 AM EDT SAT MAY 23 2015

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

SUMMARY...LATEST AVAIL ASCAT PASSES AT 0055Z AND 0235Z WERE
SHOWING LIGHT WINDS OVER THE OFSHR ZONES...EXCEPT FOR A SWATH OF
NW WINDS TO 25 KT OVER THE FAR NE NT2 WTRS BEHIND A COLD FNT THAT
WAS PASSING ACROSS THE NT1 AND NRN NT2 WTRS. SATELLITE RADAR DATA
AT 1100Z WAS SHOWING A BAND OF SHOWERS/TSTMS EXTNDS W SW INTO THE
NE PART OF THE NT2 AREA.

A COLD FRONT WILL PASS SE OF THE NT1 AREA THIS MRNG...THEN PASS SE
ACROSS THE NT2 AREA LATER TODAY.  A TROF WILL MOVE SE AND APRCH
THE GULF OF MAINE TONITE AND SUN...THEN PASS E OVER THE NRN NT1
WTRS SUN NITE INTO MON. A WARM FRONT WILL LIFT NE ACROSS THE NRN
NT1 WTRS LATE MON INTO TUE. A SERIES OF LOWS WILL PASS N OF THE
NT1 AREA TUE NITE INTO WED NITE. OTHW...A HI PRES RIDGE WILL
BUILD OFSHR TODAY INTO TONITE...THEN PERSIST SUN THRU WED NITE.

MODELS...THE MED RNG MDLS ARE IN VRY GUD AGREEMNT ACROSS THE
CSTL/OFSHR WTRS THRU THE ENTIRE FCST PRD. THE REPRESENTATIVE GFS
10M SOLN WILL BE USED TO POPULATE THE WIND GRIDS THRU WED NITE. AM
NOT PLANNING TO MAKE ANY SIGNIF CHANGES TO THE CURRENT FCST TREND.

.SEAS...DIFFS BTWN THE WAVEWATCH III MDL AND ECMWF WAM ARE MINIMAL
(1 TO 2 FT) DURING THE FCST PRD...SO WILL USE A 50/50 BLEND OF
THE WAVEWATCH III/ECMWF WAM THRU MON NITE. THEN THE ECMWF WAM
STARTS TO OVERFCST THE SEA HTS OVER THE COOLER NRN WTRS IN FAIRLY
STG SW FLOW...SO WILL GO WITH ALL WAVEWATCH III FCST SEAS FOR THE
TUE THRU WED NITE TIMEFRAME.

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

.WARNINGS...PRELIMINARY.

.NT1 NEW ENGLAND WATERS...
.ANZ800...GULF OF MAINE...
     GALE TODAY.

.NT2 MID ATLC WATERS...
     NONE.

$$

.FORECASTER SCOVIL. OCEAN PREDICTION CENTER.



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