Marine Interpretation Message
Issued by NWS

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000
AGNT40 KWNM 191828
MIMATN

MARINE WEATHER DISCUSSION FOR N ATLANTIC OCEAN
NWS OCEAN PREDICTION CENTER WASHINGTON DC
128 PM EST FRI DEC 19 2014

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

12Z GFS/UKMET AND 00Z ECMWF IN GOOD AGRMT THRU FCST PERIOD.
POPULATED WIND GRIDS WITH 10M WINDS FROM THE 12Z GFS THRU THE FCST
PERIOD.

FRONTAL BOUNDARY STALLS OVER SRN WATERS TONIGHT. MODELS SHOWING
PSBLTY OF A WEAK FRONTAL WAVE DVLPG ALONG THE BOUNDARY OVER THE
SRN WATERS SAT AND DRIFTING E ALONG THE FRONT SAT NIGHT...THEN
DSIPTNG E OF THE AREA SUN. MODELS SHOWING WINDS ASSOC WITH WAVE
ONLY IN THE 20 TO 25 KT RANGE.

MODELS IN GOOD AGRMT IN TIMING AND STRENGTH OF A COASTAL LOW DVLPG
OFF THE CAROLINAS MON AND MOVING UP THE COAST TO NEAR THE VA COAST
BY 12Z TUE...THEN DSIPTNG AS IT APPROACHES LONG ISLAND TUE AND TUE
NIGHT. POPULATED 10M WINDS FROM THE GFS FOR THIS EVENT...BUT DID
INCR THE WINDS IN THE E TO SE FLOW AHEAD OF THE ASSOC WARM FRONT
BY AROUND 10 PERCENT...AS BOTH ECMWF AND UKMET A BIT STRONGER WITH
THE FLOW.

WARM FRONT CONTINUES TO MOVE N ACROSS THE NT1 WATERS WED AND WED
NIGHT...AS A STRONG COLD FRONT MOVES OFF THE COAST. AHEAD OF THE
WARM FRONT...GFS/UKMET/ECMWF INDICATED GALES DVLPG ACROSS MOST OF
THE NT1 WATERS WED AND WED NIGHT...WITH WINDS TO 40 KT PSBL IN THE
GLF OF ME BY THE END OF THE FCST PERIOD. AS WITH THE COLD FRONT...
GFS/UKMET/ECMWF SHOWING GALES DVLPG IN THE SLY FLOW AHEAD OF THE
FRONT OVER PORTIONS OF THE CNTRL AND SRN NT2 WATERS WED. BEHIND
THE FRONT...DID BUMP WINDS UP AROUND 10 PERCENT FROM THE GFS OVER
THE CENTRAL AND SRN NT2 WATERS WED NIGHT IN ORDER TO INCR WINDS TO
GALE FORCE IN THE CCA BEHIND THE FRONT...WHICH IS IN LINE WITH THE
UKMET AND ECMWF.


.SEAS...WNA VERSION OF WWIII WITHIN A FT OR TWO OF CURRENT OBS.
POPULATED WAVE GRIDS FROM 12Z WNA THRU THE FCST PERIOD. DID BUMP
SEAS BY ABOUT 10 PERCENT IN THE CENTRAL AND NRN NT2 WATERS MON
NIGHT INTO TUE NIGHT IN THE SE FLOW AHEAD OF THE WARM FRONT. ALSO
BUMPED SEAS BY AROUND 10 PERCENT OVER THE CNTRL AND SRN NT2 WATERS
LATE WED IN THE CCA BEHIND THE FRONT.


.EXTRATROPICAL STORM SURGE GUIDANCE...12Z ESTOFS SHOWING AROUND A
FT SURGE ALONG THE MID ATLC COAST TUE NIGHT INTO WED...AND ALONG
THE NE COAST WED INTO WED NIGHT IN ASSOC WITH SELY FLOW AHEAD OF A
STRONG WARM FRONT.


.WARNINGS...PRELIMINARY.

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

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

$$

.FORECASTER ACHORN. OCEAN PREDICTION CENTER.


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