000
AGXX40 KNHC 061801
MIMATS

MARINE WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
201 PM EDT TUE AUG 6 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 HIGH CONFIDENCE.

1016 MB HIGH PRES CENTERED OVER THE CENTRAL GULF NEAR 25N90W 
WILL REMAIN NEARLY STATIONARY THROUGH WED NIGHT...THEN WEAKEN AS 
A MINOR SURFACE TROUGH TRACKS WESTWARD ACROSS THE EASTERN AND 
CENTRAL GULF WED THROUGH FRI. SUITE OF MODEL GUIDANCE IS IN GOOD 
AGREEMENT AND GFS SHOWS BROAD SCALE E-SE WINDS DEVELOPING ACROSS 
THE REGION FRI THROUGH SUN AS THE TROUGH DISSIPATES OVER THE 
WESTERN GULF.

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

FRESH WINDS IN THE S CENTRAL CARIBBEAN WILL DIMINISH TONIGHT AS 
A WEAKENING PRES PATTERN SETS UP ACROSS THE BASIN AND RIDGING N-
NE OF THE AREA RETREATS EASTWARD INTO THE EAST-CENTRAL ATLANTIC. 
A TROPICAL WAVE IN THE E CARIBBEAN WILL MOVE INTO THE CENTRAL 
CARIBBEAN WED NIGHT...THEN REACH THE W CARIBBEAN FRI WITH LITTLE 
MARINE EFFECTS EXPECTED OTHER THAN A WIND SHIFT ALONG WAVE AXIS. 
8-10 FT SEA HEIGHTS CURRENTLY FROM 10N TO 13N BETWEEN 74W AND 
79W WILL SUBSIDE SIGNIFICANTLY DURING THE NEXT 24-48 HOURS AS 
WINDS NEAR THE COAST OF COLOMBIA DIMINISH TO 15-20 KT BY WED... 
THEN REMAIN 20 KT OR LESS WED NIGHT THROUGH SUN. GENTLE TO 
MODERATE TRADE WINDS WILL PREVAIL ELSEWHERE ACROSS THE REGION 
THROUGH THE WEEKEND WITH SEAS GENERALLY LESS THAN 6 FT...EXCEPT 
FOR AN AREA OF NE SWELL TO 7-8 FT EXPECTED TO SWEEP INTO 
NORTHERN PORTION OF TROPICAL N ATLC WED NIGHT THROUGH FRI.

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

A STATIONARY FRONT EXTENDING FROM 30N72W WESTWARD ALONG THE 
FLORIDA PANHANDLE WILL LIFT N AS A WARM FRONT WED. A TROUGH FROM 
GRAND BAHAMA TO THE STRAITS OF FLORIDA WILL DRIFT W ACROSS THE 
FLORIDA PENINSULA THROUGH WED AND WEAKEN. THE NORTHERN PORTION 
OF A WEAK TROPICAL WAVE APPROACHING THE VIRGIN ISLANDS WILL 
WEAKEN FURTHER AS IT MOVES INTO THE CENTRAL BAHAMAS THROUGH FRI. 
MODEL GUIDANCE IS IN GOOD AGREEMENT...AND GFS INDICATES MODERATE 
TRADE WINDS WILL PREVAIL S OF 27N THU THROUGH SUN...WITH GENTLE 
TO MODERATE WINDS EXPECTED ELSEWHERE IN THE REGION THROUGH SUN 
WITH SEA HEIGHTS GENERALLY LESS THAN 5 FT...EXCEPT FOR AN AREA 
OF 5-6 FT SEAS S OF 24N THU NIGHT 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.