000
AGXX40 KNHC 171706
MIMATS

MARINE WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
106 PM EDT WED JUL 17 2013

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: GFS/ECMWF/OFFICIAL BLEND WITH GOOD CONFIDENCE.

BROAD MB HIGH PRES CENTER OVER OHIO VALLEY IS SUPPORTING GENTLE 
TO MODERATE E-SE WINDS...WITH SEAS 4-5 FT ACROSS ENTIRE BASIN. 
LITTLE CHANGE EXPECTED THROUGH FRI. HIGH PRES OVER S.E. U.S. 
BREAKS DOWN BY FRI NIGHT...AND MODEL GUIDANCE SHOWS ATLC RIDGE 
ALONG 27N EXPANDING WESTWARD INTO N GULF THROUGH THE WEEKEND.

...CARIBBEAN SEA AND TROPICAL N ATLANTIC...                    
MODEL PREFERENCE: GFS/ECMWF/OFFICIAL BLEND WITH GOOD CONFIDENCE.

FRESH TO STRONG TRADES ARE EXPECTED TO CONTINUE ACROSS CENTRAL 
CARIBBEAN THROUGH MON WITH ONLY MINOR DIURNAL FLUCTUATIONS. 
SCATTEROMETER DATA LAST NIGHT SHOWED 30 KT WINDS NEAR THE COAST 
OF COLOMBIA...WHICH ALLOWED WIND-DRIVEN SEAS TO BUILD TO 11-12 
FT NEAR 13N76W. HIGH PRES RIDGE N OF THE AREA WILL GRADUALLY 
SHIFT SOUTHWARD TO ALONG 27N THROUGH THE WEEKEND. TROPICAL WAVE 
IN THE CENTRAL CARIBBEAN WILL MOVE INTO THE W CARIBBEAN FRI. A 
SECOND TROPICAL WAVE MOVING THROUGH THE TROPICAL N ATLC WILL 
ENTER THE E CARIBBEAN TONIGHT THEN REACH THE CENTRAL CARIBBEAN 
FRI NIGHT. BOTH WAVES EXPECTED TO HAVE MINOR MARINE IMPACTS.

APPROACHES 55W LATE TONIGHT WITH INCREASE IN
WINDS AND SEAS.

...SW N ATLANTIC W OF 55W INCLUDING THE BAHAMAS...               
MODEL PREFERENCE: GFS/ECMWF/OFFICIAL BLEND WITH GOOD CONFIDENCE.

A WEAK SURFACE TROUGH ALONG 70W N OF 26N WILL MOVE W AND WEAKEN 
THROUGH THU NIGHT. NO SIGNIFICANT INCREASE IN WINDS OR SEAS IS 
EXPECTED...BUT MODERATE TO STRONG CONVECTION WITH BRIEF PERIOD 
OF ROUGH SEAS MAY BE ASSOCIATED WITH THIS TROUGH. ELSEWHERE... 
ATLC RIDGE AXIS N OF AREA WILL DRIFT S TO 27N THROUGH SUN.

$$

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

.GULF OF MEXICO...
GMZ011...NONE.
GMZ013...NONE.
GMZ015...NONE.
GMZ017...NONE.
GMZ019...NONE.
GMZ021...NONE.
GMZ023...NONE.
GMZ025...NONE.

.CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN
55W AND 64W...
AMZ011...NONE.
AMZ013...NONE.
AMZ015...NONE.
AMZ017...NONE.
AMZ019...NONE.
AMZ021...NONE.
AMZ023...NONE.
AMZ025...NONE.
AMZ027...NONE.
AMZ029...NONE.
AMZ031...NONE.
AMZ033...NONE.
AMZ035...NONE.
AMZ037...NONE.
AMZ039...NONE.

.SW N ATLANTIC INCLUDING THE BAHAMAS...
AMZ111...NONE.
AMZ113...NONE.
AMZ115...NONE.
AMZ117...NONE.
AMZ119...NONE.
AMZ121...NONE.
AMZ123...NONE.
AMZ125...NONE.
AMZ127...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.HURRICANES.GOV/MARINE

$$
.FORECASTER MUNDELL. NATIONAL HURRICANE CENTER.