Marine Interpretation Message
Issued by NWS

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
000
AGNT40 KWNM 230654
MIMATN

MARINE WEATHER DISCUSSION FOR N ATLANTIC OCEAN
NWS OCEAN PREDICTION CENTER WASHINGTON DC
254 AM EDT WED APR 23 2014

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

A TROF NR THE MID ATLC COAST WL CONT TO MOV INTO THE OFFSHR EARLY
THIS MRNG AND WKN. AVLBL MDL GUID MOVS LOW PRES E OVR INLAND
AREAS MAINE EARLY THIS MRNG...THEN MOVG SE INTO THE GLF OF MAINE
THIS AFTN. AN ASSOC CD FNT MOVS E INTO THE OFFSHR WTRS TDY AND
PASSES E OF THE MUCH OF THE OFFSHR WTRS THIS AFTN WITH THE
EXCEPTION OF THE FAR SRN AREAS OF THE MID ATLC OFFSHR WTRS. MDLS
ARE SMLR WITH GALES DVLPG BY THIS AFTN OVR THE MID ATLC AND INTO
THE NEW ENGLAND WTRS TNGT...THEN SHIFTING E OF THE NRN MID ATLC
AND NEW ENGLAND WTRS BY THU NGT AS STRENGTHENING LOW PRES PASSES E
OF THE OFFSHR AREAS. BY FRI WK HIGH PRES MOVS E ACRS THE OFFSHR
WTRS. MDLS DIFFER WITH LOW PRES THAT MOVS EWD INTO THE NRN OFFSHR
WTRS OVR THE WEEKEND. THE GFS CONTS TO SHOW LOW PRES MOVG EWD
INTO THE NRN NEW ENGLAND WTRS SAT WHILE THE UKMET/GEM HAV SVRL
LOWS MOVG INTO THE OFFSHR WTRS WITH THE FIRST LOW PRES MOVG E ACRS
THE FAR NRN MID ATLC WTRS SAT...AND A SECOND LOW MOVG E INTO THE
NRN NEW ENGLAND WTRS SUN. ATTM PREFER THE GEM/UKMET WHICH IS SMLR
TO THE 12Z ECMWF GUID WHICH SHOWED A SMLR SCENARIO. WL AWAIT 00Z
ECMWF BEFORE MAKING FINAL DECISION ON HOW TO HANDLE THIS WITH
GRIDS.

.SEAS...THE MULTIGRID WWIII LOOK OK INIT...ALTHO WITH GALES THAT
DVLP TDY THRU THU NGT BLV THE WWIII IS ON THE LOW SIDE. WL LIKELY
BLEND THE WWIII GUID WITH THE 00Z ECMWF WV GUID WHEN IT COMES IN.

.EXTRATROPICAL STORM SURGE GUIDANCE...GFS GUID LOOKS GOOD OVERALL WITH
GALES THAT DVLP TDY INTO THU NGT. THE ESTOFFS RMNS CONSISTENT IN
DVLPG A NEG SURGE OF 1 TO 2 FT OFF THE MID ATLC AND SRN NEW
ENGLAND COAST WED NGT THRU THU ...WHICH DMNSH LATE THU NGT INTO
EARLY FRI. THE ETSS VALUES RMN CONSISTENT AND ARE LESS THAN 1 FT
THRU THIS TIME PD.


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

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

.NT2 MID ATLC WATERS...
.ANZ820...HUDSON CANYON TO BALTIMORE CANYON...
     GALE TONIGHT INTO THU.
.ANZ915...HUDSON CANYON TO THE GREAT SOUTH CHANNEL...
     GALE TONIGHT INTO THU.
.ANZ920...BALTIMORE CANYON TO THE GREAT SOUTH CHANNEL...
     GALE TODAY INTO THU.
.ANZ905...THE GREAT SOUTH CHANNEL TO THE HAGUE LINE...
     GALE TONIGHT INTO THU NIGHT.
.ANZ910...EAST OF THE GREAT SOUTH CHANNEL AND SOUTH OF 39N...
     GALE TONIGHT INTO THU NIGHT.
.ANZ825...INNER WATERS FROM BALTIMORE CANYON TO CAPE CHARLES LIGHT...
     GALE TONIGHT.
.ANZ925...OUTER WATERS FROM BALTIMORE CANYON TO HATTERAS CANYON...
     GALE TODAY INTO THU.

$$

.FORECASTER ROWLAND. OCEAN PREDICTION CENTER.



USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.