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668
AGXX40 KNHC 241740
MIMATS

MARINE WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
140 PM EDT THU APR 24 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. FOR
WAVES BLENDED THE PREVIOUS FORECAST WITH THE LATEST MWW3 AND
NWPS. HIGH CONFIDENCE.

HIGH PRESSURE RIDGE EXTENDS OVER THE NORTHERN WATERS. LATEST
SATELLITE DERIVED WINDS AND SEAS ALONG WITH SHIP...BUOY...AND CMAN
OBSERVATIONS DEPICT GENTLE TO MODERATE SOUTHERLY RETURN FLOW OVER
THE WESTERN HALF OF THE GULF WATERS WITH SEAS IN THE 2 TO 4 FT
RANGE. LIGHT TO GENTLE WINDS PREVAIL OVER THE EASTERN HALF OF THE
GULF WATERS WITH SEAS IN THE 1 TO 2 FT RANGE. THE SOUTHERLY
RETURN FLOW WILL PREVAIL OVER THE FORECAST AREA THROUGH THE
FORECAST PERIOD. SE WINDS WILL PERIODICALLY INCREASE TO 15-20 KT
OVER THE S PORTION OF THE CENTRAL GULF SUN THROUGH MON NIGHT
BUILDING SEAS TO 5 TO 7 FT OVER THIS AREA.

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

MODEL PREFERENCE: LATEST GFS BLENDED WITH PREVIOUS OFFICIAL. FOR
WAVES BLENDED THE PREVIOUS FORECAST WITH THE LATEST MWW3 AND
NWPS. HIGH CONFIDENCE.

BROAD TROUGHING PREVAILS N OF THE AREA KEEPING THE PRESSURE
GRADIENT WEAK OVER THE CARIBBEAN WATERS. LATEST SATELLITE DERIVED
WINDS AND SEAS ALONG WITH SHIP...BUOY...AND CMAN OBSERVATIONS
DEPICT MODERATE TO FRESH TRADE WINDS WITH SEAS IN THE 5 TO 7 FT
RANGE OVER THE CENTRAL CARIBBEAN...GENTLE TO MODERATE TRADES WITH
SEAS IN THE 3 TO 5 FT RANGE OVER THE EASTERN CARIBBEAN...AND
GENTLE TO MODERATE WINDS WITH SEAS IN THE 1 TO 3 FT RANGE OVER
THE WESTERN CARIBBEAN. THE BROAD TROUGH WILL SHIFT EASTWARD BY
FRI AS WEAK HIGH PRESSURE BUILDS IN. THIS WILL SLIGHTLY TIGHTEN
THE PRESSURE GRADIENT OVER THE CENTRAL CARIBBEAN WHICH WILL
STRENGTHEN WINDS OFF THE COAST OF COLOMBIA WITH SEAS BUILDING TO
NEAR 9 FT THIS WEEKEND.

GENTLE TO MODERATE WINDS PREVAIL OVER THE TROPICAL N ATLC WITH
SEAS IN THE 5 TO 7 FT RANGE. NW TO N SWELLS WILL PROPAGATE INTO
THE TROPICAL N ATLC SAT WITH SEAS IN THE N CENTRAL AND NE WATERS
REACHING NEAR 9 FT EARLY SUN BEFORE STARTING TO SLOWLY SUBSIDE.

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

MODEL PREFERENCE: LATEST GFS BLENDED WITH PREVIOUS OFFICIAL. FOR
WAVES BLENDED THE PREVIOUS FORECAST WITH THE LATEST MWW3 AND
NWPS. HIGH CONFIDENCE.

A COLD FRONT EXTENDS ACROSS THE FAR NE WATERS. LATEST SATELLITE
DERIVED WINDS AND SEAS ALONG WITH SHIP...BUOY...AND CMAN
OBSERVATIONS DEPICT FRESH TO STRONG WINDS WITH SEAS IN THE 8 TO 11
FT RANGE W OF THE FRONT. GENTLE TO MODERATE WINDS WITH SEAS IN THE
4 TO 6 FT RANGE PREVAIL OVER THE EASTERN WATERS WHILE LIGHT TO
GENTLE WINDS PREVAIL OVER THE WESTERN WATERS WITH SEAS IN THE 2 TO
4 FT RANGE OUTSIDE THE BAHAMAS...AND 1 TO 2 FT W OF THE BAHAMAS.
SEAS OVER THE FAR NE WATERS WILL PEAK NEAR 15 FT FRIDAY AFTERNOON
BEFORE STARTING TO SUBSIDE AS THE SWELL PROPAGATES E OF THE AREA.
SEAS OVER THE NE WATERS WILL SUBSIDE BELOW 8 FT BY SUN MORNING. A
PROGRESSIVE SYNOPTIC PATTERN OVER THE FORECAST PERIOD WILL RESULT
IN THE FRONT SHIFTING EAST OF THE AREA WITH HIGH PRESSURE
BUILDING BEHIND THE FRONT. THE AREA OF HIGH PRESSURE WILL SHIFT E
OF THE AREA SAT AND SUN. THIS WILL ENABLE YET ANOTHER COLD FRONT
TO MOVE THE NORTHERN WATERS N OF ABOUT 29N SUN...AND TO E OF 65W
ON MON.

$$

.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...
     NONE.

$$

*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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