000
AGXX40 KNHC 191758
MIMATS

Marine Weather Discussion
NWS National Hurricane Center Miami FL
158 PM EDT Wed Jul 19 2017

Marine Weather Discussion for the Gulf of Mexico, Caribbean Sea,
and Tropical North Atlantic from 07N to 19N between 55W and 64W
and the Southwest North Atlantic including the Bahamas

...GULF OF MEXICO... 

A ridge will dominate the Gulf waters through the week producing
gentle to moderate winds and seas of 1 to 3 ft, with the exception
of variable winds and seas of 1-2 ft over the NE Gulf, where a 
weak high pressure center will prevail.

A thermal trough will develop over the Yucatan Peninsula each 
evening before pushing offshore into the SW Gulf each night. The
trough will drift westward during the overnight hours, and 
dissipate over the SW Gulf each morning. Seas will briefly build
to 4-5 ft in association with this trough.

...CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN
55W AND 64W...

The remnants of Tropical Storm Don are moving through the
southeast Caribbean waters. At 1200 UTC, a 1012 mb low pressure
is analyzed near 11.5N64.5W. Fresh to strong winds and seas up to
11 ft are still noted on the northern side of the remnant low
forecast to continue moving westward across the SE Caribbean 
waters today. Elsewhere fresh to strong winds prevail over the 
central and eastern Caribbean, except off the coast of Colombia 
and in the Gulf of Venezuela, where winds are reaching 30 kt. 
Gentle to moderate winds prevail over the western Caribbean, 
while moderate to fresh winds are blowing over the Tropical 
North Atlantic forecast zones. The most recent altimeter pass
indicated seas up to 13 ft across the south-central Caribbean. 
The aerial extend of the winds will decrease by the end of the
week as the ridge north of the area weakens. 

..SW N ATLANTIC INCLUDING THE BAHAMAS...

A ridge, with axis along 29N/30N, will dominate the forecast
region through the remainder of the week into the weekend. 
Scatterometer and surface data depict moderate to fresh winds 
over the southern waters, except fresh to strong winds north of 
Hispaniola into the Windward Passage, and light to gentle winds 
over the northern waters. Seas are in the 5-7 ft over the 
southern waters outside the Bahamas, 1-3 ft west of the Bahamas, 
and 3-5 ft over the northern waters. Pulsing fresh to locally 
strong winds are expected just north of Hispaniola, including the
approach to the Windward Passage during the evenings through the
upcomimg weekend. 

$$

.WARNINGS...Any changes impacting coastal NWS offices will be
coordinated through AWIPS II Collaboration Chat, or by
telephone:

.GULF OF MEXICO...
     None.

.CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN
55W AND 64W...
     None.

.SW N ATLANTIC INCLUDING THE BAHAMAS...
     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.nhc.noaa.gov/marine

$$

.Forecaster GR. National Hurricane Center.