weather.gov     
National Weather Service

Marine Interpretation Message
NWS Homepage
This page is being discontinued on March 12, 2014.
The same data is available at this site. Please update your bookmarks.
Thank you, and we apologize for the inconvenience.
Please send an email to SR-SRH.Webmaster@noaa.gov with any concerns.


Current Version
Previous Version:    01  02  03  04  05  06  07  08  09  10  11  12  13  14  15  16  17  18  19  20  21  22  23  24  25  26  27  
[Printable]
974
AGNT40 KWNM 220824
MIMATN

MARINE WEATHER DISCUSSION FOR N ATLANTIC OCEAN
NWS OCEAN PREDICTION CENTER WASHINGTON DC
324 AM EST MON DEC 22 2014

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

THE SAT IMG SHOW MORE CONVCTN OVR THE SRN WTRS ASCTD WITH A WRM
FRNT AND LIGHTNG STRIKES CONCENTRATED TO THE FAR S-WRN PORTION.
THE RADAR HAS TSTMS CELLS OVR THE FAR S-WRN WTRS TOO. AT 06Z LOW
PRES 1011 MB OVR EDGE OF THE SRN WTRS HAS A WRM FRNT STRTCHNG E
ACRS THE FAR SRN PORTIONS. INLAND HGH PRES OVR QUEBEC XTNDS A
RIDGE SW THRU NY AND THE MID ATLC STATES INTO THE S-ERN STATES.
THE PRES GRDNT IS QUITE SLACK AND THE MAX OBS WINDS ARE 25 KT OVR
THE SRN WTRS. THE LATST RAPID-SCAT PASS OVR THE REGION AT 0140Z
HAD 30 KT WINDS OVR THE SRN WTRS ALONG THE WRM FRNT.

THERE ARE A FEW SPOTS OF LOCALLY GENERATED ENRGY IN A FAIRLY WK
RIDGE ALOFT. UPPLVL DIFFLENCE OVR CANADA WILL ALLOW MORE ENERGY TO
SPILL BACK INTO THE TROF TO THE W AND THAT ENERGY WILL COMBINE
WITH THE ONE STREAMING FRM THE W AND DVLP A FAIRLY DEEP UPPRLVRL
TROF THAT WIL RESULT INTO A CLSD LOW THAT WILL PUSH A STRNG FRNT
INTO THE REGION IN THE XTNDD PRD. HENCE THE CURR WRNGS IN THE FRCT
IN THE XTNDD PRD WIL BE RETAINED.

THE GLBL MDLS HV INTIALIZED WELL AND THEY ARE IN DECENT AGRMNT IN
THE SHORT TERM. THERE ARE SOME MNR DIFFS IN THE XTNDD PRD WHICH
ARE MAINLY IN TIMING OF THE LOW PRES THAT WILL BE MOVING NE AND
PULLING A CLD FRNT ACRS THE REGION AND THE STRENGTH OF THE WINDS
OVR THE REGION. CMC ECMWFHR AND GFS HV HGR GALE FORCE WINDS
COMPARED TO UKMET AND SO WIL STAY WITH GFS 30 M WINDS AND WILL
RETAIN ALL THE WRNGS. IN THE SHORT TERM THE HGH PRES OVR CANADA
WIL MV SE WHILE THE LOW PRES OVR THE SRN WTRS WILL MOVE NE AND
LIFT THE WRM FRNT ACRS THE SRN WTRS INTO THE NRN WTRS. IN THE
XTNDD PRD LOW PRES WILL PASS INLAND IN THE NE DIR AS IT PULLS A
STRNG FRNT ACRS THE WTRS. THE PRES GRDNT WIL BECOME TIGHT AND GALE
FORCE WINDS WILL BE GENRTAED. THE GALE FORCE WINDS WILL SUBSIDE TO
BELOW GALE FORCE AS A RIDGE MOVES IN JUST BEFORE END OF FCST PRD.

.SEAS...THE SEAS RANGE BTWN 2 AND 6 FT OVR MOST OF THE REGION
XCPT THE SRN WTRS WHERE THEY PEAK AT 8 FT. THE NWW3 MULTI GRID WV
MDL FITS FAIRLY WELL WITH THE SEAS PATTERN AND SO IS THE ECMWFWAVE
AND BOTH WV MDLS ARE IN AGRMNT. THE SEAS WIL REMAIN BELOW 8 FT IN
THE SHORT TERM BUT WILL BUILD TO 17 FT PEAKS OVR THE NRN WTRS IN
THE GALE FORCE AREAS.

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

.WARNINGS...PRELIMINARY.

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

.NT2 MID ATLC WATERS...
.ANZ820...HUDSON CANYON TO BALTIMORE CANYON...
     GALE POSSIBLE WED NIGHT INTO THU NIGHT.
.ANZ915...HUDSON CANYON TO THE GREAT SOUTH CHANNEL...
     GALE POSSIBLE WED NIGHT INTO THU NIGHT.
.ANZ920...BALTIMORE CANYON TO THE GREAT SOUTH CHANNEL...
     GALE POSSIBLE THU INTO THU NIGHT.
.ANZ905...THE GREAT SOUTH CHANNEL TO THE HAGUE LINE...
     GALE POSSIBLE THU INTO FRI.
.ANZ910...EAST OF THE GREAT SOUTH CHANNEL AND SOUTH OF 39N...
     GALE POSSIBLE THU INTO THU NIGHT.
.ANZ925...OUTER WATERS FROM BALTIMORE CANYON TO HATTERAS CANYON...
     GALE POSSIBLE THU.
.ANZ830...INNER WATERS FROM CURRITUCK BEACH LIGHT TO CAPE HATTERAS...
     GALE POSSIBLE THU.
.ANZ833...INNER WATERS FROM CAPE HATTERAS TO CAPE FEAR...
     GALE POSSIBLE WED NIGHT.
.ANZ930...OUTER WATERS FROM HATTERAS CANYON TO CAPE FEAR...
     GALE POSSIBLE THU.

$$

.FORECASTER MUSONDA. OCEAN PREDICTION CENTER.




U.S. Dept. of Commerce
NOAA National Weather Service
1325 East West Highway
Silver Spring, MD 20910
E-mail: w-nws.webmaster@noaa.gov
Page last modified: May 16, 2007
NATIONAL WEATHER SERVICE: for Safety, for Work, for Fun - FOR LIFE