000
AGXX40 KNHC 301753
MIMATS

MARINE WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
153 PM EDT TUE JUL 30 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 WITH GOOD CONFIDENCE.

WEAK HIGH PRES WILL PERSIST OVER THE EASTERN AND NE GULF THROUGH 
SAT. EXPECT GENTLE TO MODERATE E-SE WINDS ACROSS MOST OF THE 
REGION THROUGH FORECAST PERIOD WITH SEAS GENERALLY 3 FT OR LESS 
EXCEPT W OF 95W AND SW GULF WHERE SEAS MAY REACH 3-4 FT AT TIMES.

...CARIBBEAN SEA AND TROPICAL N ATLANTIC...                    
MODEL PREFERENCE: GFS WITH GOOD CONFIDENCE.

PERSISTENT HIGH PRES RIDGE IN WEST-CENTRAL ATLC AND STATIONARY 
LOW PRES OVER NORTHERN SOUTH AMERICA WILL MAINTAIN MODERATE PRES 
GRADIENT ACROSS THE AREA THROUGH SAT WITH 20-25 KT E WINDS
CONTINUING IN THE CENTRAL CARIBBEAN THROUGH FRI. A TIGHTER PRES
GRADIENT WILL DEVELOP FRI NIGHT ACROSS THE REGION...WHICH WILL
ALLOW WINDS AND SEAS TO INCREASE NEAR THE COAST OF COLOMBIA SAT.
HIGH PRES EXPECTED TO STRENGTHEN NEAR 30N55W THU THROUGH SAT AND
SEAS WILL BUILD TO 5-7 FT FRI AND SAT IN THE TROPICAL N ATLC FROM
STRONGER NE TRADES IN THE WEST-CENTRAL ATLC BETWEEN 10N AND 20N.

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

PERSISTENT HIGH PRES RIDGE ALONG 29N-30N AND TROPICAL WAVE...THE
REMNANTS OF DORIAN...ALONG 73W MOVING W-NW INTO THE BAHAMAS AND S
FLORIDA. TIGHT PRES GRADIENT BETWEEN THESE TWO FEATURES PRODUCING
SWATH OF HIGHER WINDS AND SEAS BETWEEN 22N AND 25N. TROPICAL WAVE
IS EXPECTED TO BECOME MORE DIFFUSE AS IT APPROACHES FLORIDA WHICH
WILL WEAKEN THE GRADIENT AND CAUSE SIGNIFICANT DECREASE IN WINDS
AND SEAS W OF BAHAMAS TONIGHT THROUGH THU. GENTLE TO MODERATE E-
SE WINDS WILL PREVAIL ELSEWHERE S OF 27N THROUGH SAT WITH GENTLE
S-SW WINDS N OF 27N. SEAS WILL DIMINISH SIGNIFICANTLY ACROSS THE
REGION THROUGH WED NIGHT...BECOMING MORE GRADUAL THU THROUGH SAT.

$$

.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 DGS. NATIONAL HURRICANE CENTER.