Marine Interpretation Message
Issued by NWS

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000
AGXX40 KNHC 301738
MIMATS

MARINE WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
138 PM EDT THU OCT 30 2014

MARINE WEATHER DISCUSSION FOR THE GULF OF MEXICO...CARIBBEAN
SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND
64W...AND THE SW N ATLANTIC INCLUDING THE BAHAMAS.

...GULF OF MEXICO...

MODEL PREFERENCE: LATEST GFS BLENDED WITH PREVIOUS OFFICIAL. NWPS
USED FOR WAVE PARAMETERS. HIGH CONFIDENCE.

A COLD FRONT EXTENDS FROM NORTHERN FLORIDA TO S TEXAS. LATEST
SATELLITE DERIVED WINDS AND SEAS ALONG WITH SHIP...BUOY...AND CMAN
DATA DEPICT GENTLE TO MODERATE WINDS PREVAIL EXCEPT OVER THE SE
GULF WHERE LIGHT TO GENTLE WINDS ARE NOTED. SEAS ARE IN THE 1-3 FT
RANGE EXCEPT IN THE 2-4 FT RANGE OVER THE SW GULF. THE COLD FRONT
WILL CONTINUE TO SHIFT SLOWLY SE...EVENTUALLY MOVING SE OF THE
AREA EARLY SAT. A SECOND STRONGER COLD FRONT WILL MOVE INTO THE
NORTHERN GULF WATERS LATE FRI AND QUICKLY MOVE ACROSS THE GULF
WATERS...AND SE OF THE FORECAST AREA BY EARLY SUN. STRONG HIGH
PRESSURE WILL BUILD OVER THE SE UNITED STATES IN THE WAKE OF THE
SECOND FRONT. WINDS WILL STRENGTHEN OVER THE NORTHERN GULF LATE
FRI BEHIND THE SECOND FRONT AND SPREAD SOUTHWARD TO COVER THE
EASTERN GULF WATERS SAT NIGHT BEFORE STARTING TO DIMINISH EARLY
SUN. WITH HIGH PRESSURE BUILDING OVER THE SE UNITED STATES THIS
WEEKEND...SE RETURN FLOW WILL SET UP OVER THE WESTERN GULF BY
EARLY SUN AND PREVAIL INTO EARLY NEXT WEEK.

...CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN
55W AND 64W...

MODEL PREFERENCE: LATEST GFS BLENDED WITH PREVIOUS OFFICIAL. NWPS
USED FOR WAVE PARAMETERS. HIGH CONFIDENCE.

A TROPICAL WAVE WAVE IS MOVING THROUGH THE CENTRAL CARIBBEAN
WATERS. LATEST SATELLITE DERIVED WINDS AND SEAS ALONG WITH
SHIP...BUOY...AND CMAN DATA DEPICT GENTLE TO MODERATE WINDS
PREVAIL OVER THE CARIBBEAN WATERS AS WELL AS THE TROPICAL N ATLC
WATERS. SEAS ARE IN THE 2-3 FT RANGE OVER THE EASTERN
CARIBBEAN...3-4 FT OVER THE WESTERN CARIBBEAN...AND 3-5 FT OVER
THE CENTRAL CARIBBEAN. SEAS OVER THE TROPICAL N ATLC WATERS ARE IN
THE 4-6 FT RANGE. THE TROPICAL WAVE WILL MOVE INTO THE WESTERN
CARIBBEAN FRI THEN W OF THE AREA SAT. A COLD FRONT WILL MOVE INTO
THE NW CARIBBEAN LATE FRI. THIS FRONT WILL REACH FROM CENTRAL
CUBA TO THE YUCATAN PENINSULA SAT AFTERNOON WHERE ITS FORWARD
PROGRESS WILL SLOW. A SECOND FRONT WILL QUICKLY FOLLOW MOVING
INTO THE NW CARIBBEAN LATE SAT. THE SECOND FRONT WILL CATCH UP
WILL THE INITIAL SLOWED FRONT EARLY SUN AND THE MERGED FRONTS WILL
SHIFT E AND STALL FROM E CUBA TO HONDURAS BY EARLY MON AND SLOWLY
DISSIPATE THROUGH EARLY TUE.

...SW N ATLANTIC INCLUDING THE BAHAMAS...

MODEL PREFERENCE: LATEST GFS BLENDED WITH PREVIOUS OFFICIAL. NWPS
USED FOR WAVE PARAMETERS. HIGH CONFIDENCE.

LOW PRESSURE IS SPINNING JUST NE OF PUERTO RICO. A SURFACE TROUGH
EXTENDS ACROSS THE WATERS ROUGHLY ALONG 70W. A COLD FRONT HAS JUST
MOVED INTO THE NW WATERS EARLY THIS MORNING. LATEST SATELLITE
DERIVED WINDS AND SEAS ALONG WITH SHIP...BUOY...AND CMAN DATA
DEPICT MODERATE TO FRESH WINDS OVER THE NE QUADRANT OF THE
LOW...GENTLE TO MODERATE WINDS E OF THE TROUGH...AND LIGHT TO
GENTLE WINDS W OF THE TROUGH. SEAS ARE IN THE 6-8 FT RANGE OVER
THE NE QUADRANT OF THE LOW...4-6 FT E OF THE TROUGH...2-4 FT W OF
THE TROUGH OUTSIDE THE BAHAMAS...AND 1-2 FT W OF THE BAHAMAS. THE
TROUGH AND LOW PRESSURE AREA WILL SLOWLY DISSIPATE THROUGH LATE
FRI. THE COLD FRONT WILL SLOWLY DRIFT SE OVER THE NEXT 24 HOURS
BEFORE INCREASING ITS FORWARD MOTION TO REACH FROM NEAR 31N72W TO
CENTRAL CUBA EARLY SAT THEN FROM 31N64W TO E CUBA EARLY SUN. A
SECOND STRONGER FRONT WILL SHIFT INTO THE NW WATERS EARLY SAT.
THIS FRONT WILL RAPIDLY SHIFT E AND MERGE WITH THE PREVIOUS FRONT
SUN AFTERNOON. THE MERGED FRONT WILL STALL FROM NEAR 25N65W TO E
CUBA BY MON MORNING WHERE IT WILL SLOWLY DISSIPATE THROUGH TUE.
THE SECOND FRONT WILL USHER IN GALE FORCE WINDS OVER THE TWO
FARTHEST NW ZONES BY SAT AFTERNOON BEFORE THE GALE CONDITIONS
SHIFT N OF THE AREA EARLY SUN. THE FRONT WILL ALSO USHER IN A SET
OF NW SWELLS WITH SEAS PEAKING NEAR 18 FT OVER THE NORTHERN WATERS
LATE SAT INTO EARLY SUN.

$$

.WARNINGS...ANY CHANGES IMPACTING COASTAL NWS OFFICES WILL BE
COORDINATED THROUGH AWIPS 12 PLANET CHAT OR BY TELEPHONE:

.GULF OF MEXICO...
     NONE.

.CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN
55W AND 64W...
     NONE.

.SW N ATLANTIC INCLUDING THE BAHAMAS...
.AMZ111...ATLANTIC FROM 27N TO 31N W OF 77W...
     GALE CONDITIONS POSSIBLE SAT.
.AMZ113...ATLANTIC FROM 27N TO 31N BETWEEN 70W AND 77W...
     GALE CONDITIONS POSSIBLE SAT INTO SAT NIGHT.

$$

*FOR DETAILED ZONE DESCRIPTIONS PLEASE VISIT:
HTTP://WWW.NHC.NOAA.GOV/ABOUTTAFBPROD.SHTML#OWF

NOTE: GRIDDED MARINE FORECASTS ARE AVAILABLE IN THE
NATIONAL DIGITAL FORECAST DATABASE (NDFD) AT:
HTTP://WWW.NHC.NOAA.GOV/MARINE/GRIDS.PHP

FOR ADDITIONAL INFORMATION PLEASE VISIT:
HTTP://WWW.HURRICANE WARNINGS.GOV/MARINE

$$

.FORECASTER AL. NATIONAL HURRICANE CENTER.



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