000
AGXX40 KNHC 010645
MIMATS

MARINE WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
245 AM EDT THU AUG 1 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 RIDGE WILL DOMINATE THE GULF WATERS DURING THE FORECAST
PERIOD. UNDER THE INFLUENCE OF THIS RIDGE...EXPECT GENTLE TO 
MODERATE E-SE WINDS ACROSS MOST OF THE REGION THROUGH MON WITH 
SEAS GENERALLY 3 FT OR LESS EXCEPT W OF 95W AND SW GULF WHERE 
SEAS MAY REACH 3-4 FT AT TIMES. WINDS MAY INCREASE TO 20 KT NEAR 
THE YUCATAN PENINSULA SAT AND SUN EVENINGS DUE TO LOCAL EFFECTS. 

...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 REGION THROUGH MON WITH FRESH E WINDS CONTINUING 
IN THE CENTRAL CARIBBEAN THROUGH FRI. TIGHTER PRES GRADIENT WILL 
DEVELOP FRI NIGHT...WHICH WILL ALLOW WINDS AND SEAS TO INCREASE 
NEAR THE COAST OF COLOMBIA THIS WEEKEND. MODEL GUIDANCE SUGGESTS 
WINDS TO 25-30 KT WITH SEAS BUILDING SEAS TO 10-12 FT S OF 12N 
SAT AND SUN. WITH HIGH PRES EXPECTED TO STRENGTHEN NEAR 30N55W 
THU THROUGH SAT...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.

HIGH PRES CENTERED OVER THE CENTRAL ATLC EXTENDS A RIDGE ACROSS 
THE FORECAST REGION PRODUCING GENTLE WINDS N OF 27N AND GENTLE 
TO MODERATE EASTERLY WINDS S OF 27N. THIS WEATHER PATTERN WILL 
PERSIST THROUGH SUN...THEN A COLD FRONT PUSHING SE FROM THE OHIO 
VALLEY WILL REACH THE GEORGIA COAST EARLY MON...AND CAUSE THE 
RIDGE TO SHIFT SOUTHWARD TO AROUND 26N MON. EXPECT 3-5 FT SEAS E 
OF THE BAHAMAS WITH SEAS SLIGHTLY HIGHER S OF 22N.

$$

.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.