Marine Interpretation Message
Issued by NWS

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AGNT40 KWNM 200836
MIMATN

MARINE WEATHER DISCUSSION FOR N ATLANTIC OCEAN
NWS OCEAN PREDICTION CENTER WASHINGTON DC
436 AM EDT SUN APR 20 2014

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

A SLOW MOVING AREA OF LOW PRES WILL BE EFFECTING MUCH OF THE NT2
WATERS OVER THE NEXT COUPLE OF DAYS AS N TO NE FLOW PERSISTS WITH
STRONGEST WINDS VCNITY OF THE THE THE GULF STREAM. THE THE GLOBAL
MODELS ARE IN PRETTY GOOD AGREEMENT WITH THIS FEATURE WITH THE
DIFFERENCES MAINLY IN THE THE DETAILS AND STRENGTH OF THE BL
WINDS. LATER IN THE WEEK AN AREA OF LOW PRES WILL MOVE OFF THE NE
CST AND INTENSIFY E OF THE NT1 WATERS...AGAIN BOTH THE GFS/ECMWF
ARE IN FAIRLY GOOD AGREEMENT WITH THIS FEATURE. WHEN POPULATING
THE GRIDS I USED THE 30M GFS WINDS FOR THE FIRST PART OF THE
PACKAGE...TRANSITIONING TO THE 10 M WINDS LATER WHEN MORE STABLE
CONDITIONS ARE EVIDENT. FOR DAYS 5-7 I USED A 50/50 BLEND OF THE
GFS/ECMWF FOR THE WINDS IN ORDER TO HEDGE MY BETS.

.SEAS...THET SEAS LOOKED OK IN GENERAL. I USED A 50/50 BLEND OF
THE WW3 AND ECMWF WAVE GUIDANCE THROUGHOUT THE FCST PERIOD. I
MODIFIED THE SEAS SLIGHTLY IN CERTAIN AREAS WHERE IT APPEARED TOO
HIGH BY ABOUT A FOOT OR SO.

.EXTRATROPICAL STORM SURGE GUIDANCE...BOTH THE ESTOFS AND ETSS
LOOK REASONABLE GIVEN THE OVERALL AGREEMENT WITH THE GFS.

.WARNINGS...PRELIMINARY. ANY CHANGES WILL BE COORDINATED THROUGH
AWIPS 12 PLANET CHAT OR BY TELEPHONE:

.NT1 NEW ENGLAND WATERS...
.ANZ800...GULF OF MAINE...
     GALE POSSIBLE WED NIGHT INTO THU.
.ANZ900...GEORGES BANK WEST OF 68W...
     GALE POSSIBLE WED NIGHT INTO THU NIGHT.

.NT2 MID ATLC WATERS...
.ANZ920...BALTIMORE CANYON TO THE GREAT SOUTH CHANNEL...
     GALE EARLY TODAY INTO TODAY.
.ANZ905...THE GREAT SOUTH CHANNEL TO THE HAGUE LINE...
     GALE POSSIBLE WED NIGHT INTO THU NIGHT.
.ANZ910...EAST OF THE GREAT SOUTH CHANNEL AND SOUTH OF 39N...
     GALE POSSIBLE THU INTO THU NIGHT.
.ANZ825...INNER WATERS FROM BALTIMORE CANYON TO CAPE CHARLES LIGHT...
     GALE TODAY.
.ANZ828...INNER WATERS FROM CAPE CHARLES LIGHT TO CURRITUCK BEACH LIGHT...
     GALE TODAY INTO TONIGHT.
.ANZ925...OUTER WATERS FROM BALTIMORE CANYON TO HATTERAS CANYON...
     GALE EARLY TODAY INTO MON.
.ANZ830...INNER WATERS FROM CURRITUCK BEACH LIGHT TO CAPE HATTERAS...
     GALE TODAY INTO TONIGHT.
.ANZ833...INNER WATERS FROM CAPE HATTERAS TO CAPE FEAR...
     GALE EARLY TODAY INTO TONIGHT.
.ANZ930...OUTER WATERS FROM HATTERAS CANYON TO CAPE FEAR...
     GALE EARLY TODAY INTO TODAY.
.ANZ835...INNER WATERS FROM CAPE FEAR TO 31N...
     GALE EARLY TODAY INTO TONIGHT.

$$

.FORECASTER SHAW. OCEAN PREDICTION CENTER.


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