000
AGXX40 KNHC 201821
MIMATS

Marine Weather Discussion
NWS National Hurricane Center Miami FL
221 PM EDT Sun May 20 2018

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 remain over the northern Gulf Coast through Thu
night. A surface trough will drift westward from the Florida
Straits to the central Gulf by Tue. A trough will develop by
evening each day over the Yucatan Peninsula, then move W over
the SW waters and dissipate by mid morning. An area of low
pressure forecast to develop over the NW Caribbean Sea and move N
within a trough extending N over the eastern Gulf could cause 
winds and seas to gradually increase over the SE Gulf waters and 
Straits of Florida late Thu and Fri. The latest forecast grid 
update leans toward the GFS and away from the ECMWF. The GFS has 
trended weaker with this system during this time frame and keeps 
the strongest winds associated with this system to the E of the
Gulf over the western Atlantic.

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

Atlantic Ocean high pressure will maintain fresh to locally
strong trades over the central Caribbean through most of the
forecast period. Strong winds and seas to 9 ft will affect the
NW coast of Colombia. Broad low pressure will develop over the
SW Caribbean Mon, then move NW over Nicaragua and Honduras to
the Gulf of Honduras by Thu. This could bring increased winds
and seas to the western Caribbean by mid week. Winds over the
western Caribbean will weaken on Fri and Sat as the area of low 
pressure moves farther north.

...SW N ATLANTIC INCLUDING THE BAHAMAS...

An east to west ridge will reside near 30N through  mid week.
The ridge will support fresh to locally strong E to SE  winds
mainly S of 26N, including the Old Bahama Channel, and the 
approaches to the Windward Passage through Wed night. A broad
area of low pressure moving northward across the eastern Gulf
will cause strong SE winds to develop over the waters W of 75W 
on Fri and Sat.

$$

.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 McElroy. National Hurricane Center.