Marine Interpretation Message
Issued by NWS

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000
AGNT40 KWNM 011951
MIMATN

MARINE WEATHER DISCUSSION FOR N ATLANTIC OCEAN
NWS OCEAN PREDICTION CENTER WASHINGTON DC
351 PM EDT WED APR 1 2015

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

THE SAT IMG HAS MOST OF THE CONV CLDS OVR THE ERN WTRS WHERE
THERE IS STRNG IND OF DENSE LIGHTNG STRIKES. RADAR SHOWS NO TSTMS
CELLS OVR THE WTRS MAINLY BECAUSE ITS COVERAGE DOES NOT EXTND TO
THE ERN WTRS. SREF INDCT THAT THERE IS UP TO 25 PERCENT CHANCE OF
SEV TSMS OVR THE ERN PARTS OF THE REGION TODAY. AT 1800Z LOW PRES
995 MB TO N-ERN BALT CNYN HAS A CLD FRNT THAT STRETCHES SW TO
PASS JUST E OF THE CNTRL REGION AND THEN ACRS THE SRN WTRS. INLAND
HGH PRES HAS WK RIDGE JUST BEHIND THE FRNT OVR THE SRN WTRS. THE
PRES GRDNT HAS NOW RELAXED OVR THE N-ERN WTRS WHERE THE MAX WINDS
ARE NOW BELOW GALE FORCE.

MOST OF THE ENRGY THAT DROPPED FROM THE N IS CURR EMBDD IN AN
UPPRLVL TROF OVR THE NRN WTRS WITH SOME LOCALLY INDCD ENERGY OVR
THE SRN WTRS. THE TROF WILL QUICKLY SHIFT E AND AN UPPRLRVL RIDGE
WILL SET IN BRIEFLY. MORE ENERGY WILL DROP DOWN INTO THE REGION
BY THE WEEKEND AND THAT WILL FORCE ANOTHER TIGHT PRES GRDNT.

THE MDLS HV STILL INITIALIZED WELL AND THEY CONTNE TO BE IN GUD
AGRMNT AND SO WILL WILL NOT MAKE MJR CHNGES FROM THE PREVIOUS
FCST AND WILL RETAIN MOST OF THE WRNGS AND WILL STAY WITH GFS MDL
GDNC. IN THE SHORT TERM LOW PRES WILL ZOOM NE WHILE A HGH PRES
MOVES INTO THE SRN WTRS. THE PRES GRDNT WILL RELAX AND ALLOW WINDS
TO DIMINSH TO BELOW GALE FORCE. IN THE XTNDD PRD THE PRES GRDNT
WILL TIGHTEN AGAIN.

.SEAS...THE HGST SEAS ARE ALSO OVR THE N-ERN PARTS WITH 13 FT
PEAKS. SEAS SUBSIDE TO 4 FT OVR THE S-WRN WTRS AND THE N-WRN WTRS.

.EXTRATROPICAL STORM SURGE GUIDANCE...MDL GUID INDC A SLGT NEG
SURGE WITH STG NW OFSHR FLOW BEHIND SERIES OF FAST MOVG FNTS THRUT
THE PD. LARGEST NEG SURGE 1 TO 2 FT DVLPS MID ATLC CST WITH THE
STRONG FNT MOVG THRU THE WATLC SAT INTO SUN...AND NEG SURGE LOOKS
A LTL HIGH IN THAT TIME FRAME.

.WARNINGS...PRELIMINARY.

.NT1 NEW ENGLAND WATERS...
.ANZ800...GULF OF MAINE...
     GALE POSSIBLE SAT INTO SUN.
.ANZ805...GEORGES BANK WEST OF 68W...
     GALE POSSIBLE FRI NIGHT INTO SAT.
     GALE POSSIBLE SUN INTO SUN NIGHT.
.ANZ900...GEORGES BANK EAST OF 68W...
     GALE FRI.
     GALE POSSIBLE FRI NIGHT INTO SAT.
     GALE POSSIBLE SUN INTO SUN NIGHT.
.ANZ810...SOUTH OF NEW ENGLAND...
     GALE POSSIBLE FRI NIGHT INTO SAT.
     GALE POSSIBLE SUN.
.ANZ815...SOUTH OF LONG ISLAND...
     GALE POSSIBLE FRI NIGHT INTO SAT.
     GALE POSSIBLE SUN.

.NT2 MID ATLC WATERS...
.ANZ820...HUDSON CANYON TO BALTIMORE CANYON...
     GALE FRI.
     GALE POSSIBLE FRI NIGHT INTO SAT.
     GALE POSSIBLE SUN.
.ANZ915...HUDSON CANYON TO THE GREAT SOUTH CHANNEL...
     GALE POSSIBLE FRI NIGHT INTO SAT.
     GALE POSSIBLE SUN INTO SUN NIGHT.
.ANZ920...BALTIMORE CANYON TO THE GREAT SOUTH CHANNEL...
     GALE FRI.
     GALE POSSIBLE FRI NIGHT INTO SAT.
.ANZ905...THE GREAT SOUTH CHANNEL TO THE HAGUE LINE...
     GALE FRI.
     GALE POSSIBLE FRI NIGHT.
     STORM POSSIBLE SAT.
     GALE POSSIBLE SUN INTO SUN NIGHT.
.ANZ910...EAST OF THE GREAT SOUTH CHANNEL AND SOUTH OF 39N...
     GALE FRI.
     GALE POSSIBLE FRI NIGHT INTO SAT.
     GALE POSSIBLE SUN NIGHT.
.ANZ825...INNER WATERS FROM BALTIMORE CANYON TO CAPE CHARLES LIGHT...
     GALE FRI.
     GALE POSSIBLE FRI NIGHT INTO SAT.
.ANZ828...INNER WATERS FROM CAPE CHARLES LIGHT TO CURRITUCK BEACH LIGHT...
     GALE FRI.
     GALE POSSIBLE FRI NIGHT INTO SAT.
.ANZ925...OUTER WATERS FROM BALTIMORE CANYON TO HATTERAS CANYON...
     GALE FRI.
     GALE POSSIBLE FRI NIGHT INTO SAT.
.ANZ830...INNER WATERS FROM CURRITUCK BEACH LIGHT TO CAPE HATTERAS...
     GALE POSSIBLE FRI NIGHT INTO SAT.
.ANZ833...INNER WATERS FROM CAPE HATTERAS TO CAPE FEAR...
     GALE POSSIBLE FRI NIGHT INTO SAT.
.ANZ930...OUTER WATERS FROM HATTERAS CANYON TO CAPE FEAR...
     GALE POSSIBLE FRI NIGHT INTO SAT NIGHT.
.ANZ835...INNER WATERS FROM CAPE FEAR TO 31N...
     GALE POSSIBLE SAT.
.ANZ935...OUTER WATERS FROM CAPE FEAR TO 31N...
     GALE POSSIBLE SAT NIGHT.

$$

.FORECASTER MUSONDA. OCEAN PREDICTION CENTER.



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