Marine Interpretation Message
Issued by NWS

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000
AGNT40 KWNM 030052
MIMATN

MARINE WEATHER DISCUSSION FOR N ATLANTIC OCEAN
NWS OCEAN PREDICTION CENTER WASHINGTON DC
752 PM EST MON MAR 2 2015

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

NO SIG CHANGES TO THE FCST OR HEADLINES ANTICIPATED ATTM.

STRONG LOW PRES CURRENTLY MOVING OVER NEW FOUNDLAND...WITH ASSOC
COLD FRONT MOVING JUST E OF THE OFFSHR WATERS. LATEST SFC OBS
SHOWING GUSTS IN THE 35 TO 40 KT RANGE OFF THE MAINE COAST...WITH
GUSTS TO NEAR GALE FORCE FROM BUOY 44008. WILL CONTINUE GALES FOR
THE ERN PORTIONS OF THE NT2 AND NRN NT2 WATERS OVERNIGHT...AND
HAVE GALES END AROUND DAYBREAK AS THEY MOVE E OF THE AREA.

SEAS...WNA VERSION OF WWIII A LITTLE UNDERDONE IN THE GALE AREA
WHEN COMPARED TO LATEST SFC OBS. A 50/50 BLEND OF THE HIGHER ECMWF
WAVE AND LOWER WNA VALUES STILL SEEM TO BE THE BEST COMPROMISE
ATTM.

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

INTENSIFYING LOW WAS SE OF NOVA SCOTIA EARLY THIS AFTN WITH A CD
FNT TRAILING SWD INTO THE SRN MID ATLC WTRS. AN ASCAT PASS FM 15Z HAD
A SWATH OVR ERN SECTIONS OF THE SRN NEW ENGLAND WTRS INTO THE ERN
AREAS OF NRN MID ATLC WTRS. STGST SWLY FLW INADVOF CD FNT SHOWED
WINDS TO 45 KT E OF THE NRN OFFSHR WTRS INVOF 40N/63W WITH WINDS
TO 35 KT CLOSER TO THE OFFSHR WTRS. ELSW OVR THE ERN NEW ENGLAND
INTO THE NRN MID ATLC WTRS WINDS WERE TO 25 KT BEHIND THE CD FNT.

AT 18Z GALES LIKELY OCCURRING THRU MOST OF THE NRN OFFSHR WTRS OF
NEW ENGLAND INTO THE MID ATLC WTRS WITH WINDS TO 40 KT LATER THIS
AFTN AND EARLY TNGT. GALES SHIFT E OF THE WTRS SHORTLY AFT
MIDNIGHT AS STG HIGH PRES RDG BUILDS INTO WTRS...THEN ACROSS THE
WTRS TUE. WM FNT LIFTS OVR THE MID ATLC WTRS TUE AND INTO THE NEW
ENGLAND WTRS TUE TNGT INTO WED. MDLS RMN CONSISTENT FM EARLIER AND
PLAN TO CONT TO FAVOR THE GFS 10M WINDS WITH S TO SWLY FLW WITH
GALES OVR MUCH OF THE MID ATLC WTRS INTO THE NEW ENGLAND WTRS
INADVOF APPROACHING CD FNT. MDLS CONT TO NOT BE WELL DEFINED WITH
LOW PRES THAT DVLPS ON THE CD FNT THAT MOVS S INTO THE NRN MID
ATLC WTRS LATE WED. MDLS RMN CONSISTENT WITH TRACKING WK LOW PRES
CNTRS ALG THE FNT OVR THE NRN MID ATLC WED NGT AND THU. PLAN TO
USE GFS MDL AND USE 30M WINDS N OF THE FNT AND OVR THE NW QUAD OF
LOW AND 10M WINDS S OF THE LOW AND CD FNT. AS THE STG HIGH PRES
BUILDS E OVR THE WTRS THU NGT INTO FRI WL USE 30M GFS WINDS INTO
FRI MRNG...THEN USE 10M WINDS THEREAFT AS HIGH PRES WKNS. BY SAT
AND SAT NGT GFS/UKMET/GEM MDLS ARE IN AGRMT WITH SRN STREAM SHRTWV
AND LOW PRES DVLPG ALG 30N OVR THE OFFSHR WTRS AND TRACKING E OF
THE AREA SAT NGT. THE GFS/GEM ARE STGR WITH THE DVLPMT...ALTHO
WITH STGST WINDS OCCURING OVR THE ERN AREAS OF THE WTRS.

.SEAS...AT 18Z THE WWIII/ECMWF WAM ARE IN DECENT AGRMT WITH OBS
SEAS ACRS THE OFFSHR AREAS. PLAN TO CONT TO BLEND 50/50 12Z WWIII/ECMWF
WAM THRU THE FCST PD WITH SEAS IN DECENT AGRMT.


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


.WARNINGS...PRELIMINARY.

.NT1 NEW ENGLAND WATERS...
.ANZ800...GULF OF MAINE...
     GALE TONIGHT.
.ANZ805...GEORGES BANK WEST OF 68W...
     GALE TONIGHT.
     GALE WED.
.ANZ900...GEORGES BANK EAST OF 68W...
     GALE TONIGHT.
     GALE TUE NIGHT INTO WED.

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

$$

.FORECASTER ACHORN/ROWLAND. OCEAN PREDICTION CENTER.


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