000
AGXX40 KNHC 180822
MIMATS

MARINE WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
422 AM EDT THU JUL 18 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.

WEAK TROUGH CROSSES BAY OF CAMPECHE TODAY AND TONIGHT WITH LIGHT
TO GENTLE BREEZE AND 3-4 FT SEAS ASSOCIATED WITH IT. SECOND
SURFACE TROUGH ALONG W COAST OF FLORIDA INCREASES FLOW OF TROPICAL
MOISTURE INTO REGION PROMPTING SCATTERED MODERATE TO STRONG
CONVECTION WITH PERIODS OF ROUGH SEAS. ELSEWHERE... BROAD HIGH
PRES ATLC RIDGE EXTEND W INTO SOUTHEASTERN STATES PROVIDING GENTLE
TO MODERATE E-SE BREEZE THROUGH FRI...THEN VEER SE-S THROUGH SUN
AS HIGH PRES SHIFTS E.

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

BROAD 1025 MB ATLC HIGH PRES CENTER OVER CENTRAL ATLC HAS RIDGE
EXTEND W INTO SW N ATLC TIGHTENING PRES GRADIENT WITH LOW PRES
1006 MB OVER COAST OF COLOMBIA. RESULT IS A EXPANDING AREA OF STRONG
NE-E BREEZE OVER CENTRAL CARIBBEAN WITH NEAR GALE GUSTS AND 12-14
FT SEAS WHILE MODERATE TO FRESH BREEZE AND 5-7 FT SEAS COVER
EASTERN AND WESTERN SIDES OF BASIN THROUGH FORECAST PERIOD. RIDGE
SHIFT E LATE IN PERIOD BUT LITTLE CHANGE IN CONDITIONS EXPECTED IN
BASIN. 

TROPICAL WAVE ALONG 79W MOVES INLAND NICARAGUA EARLY FRI AND INTO
YUCATAN PENINSULA BY SAT. SECOND TROPICAL ALONG 66W MOVES W ACROSS
CENTRAL AND WESTERN CARIBBEAN THROUGH FORECAST PERIOD. BOTH WAVES
EXPECTED TO HAVE MINOR MARINE IMPACTS.

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

WEAK SURFACE TROUGH ALONG 72W N OF 26N MOVE W INLAND FLORIDA SAT.
NO SIGNIFICANT INCREASE IN WINDS OR SEAS IS EXPECTED. SURFACE
TROUGH OVER W COAST OF FLORIDA ADVECTS STEADY FLOW OF TROPICAL
MOISTURE INCREASING AREA OF SCATTERED MODERATE TO STRONG CONVECTION
W OF 75W WITH BRIEF PERIODS OF ROUGH SEAS. ELSEWHERE...ATLC RIDGE
AXIS N OF AREA DRIFT SE TO 28N 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 WALLY BARNES. NATIONAL HURRICANE CENTER.