000
AGXX40 KNHC 212014
MIMATS

Marine Weather Discussion
NWS National Hurricane Center Miami FL
414 PM EDT Sat Jul 21 2018

Corrected Gulf of Mexico section

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...

Latest surface observations indicate moderate to fresh winds
over the SW Gulf along and just off the coast of the Yucatan
Peninsula, with light to gentle winds in anticyclonic fashion
prevailing elsewhere. Seas are in the 2-3 ft range over the SW
gulf and 1-2 ft elsewhere. High pressure ridging will prevail
along 25N through early next week. A surface trough extending
from northeastern Florida southwestward to the NE gulf near
28N85W will slide east of the gulf to over north-central Florida
this evening. Another surface trough will move into the NE gulf
early next week. The troughs are expected to produce scattered
showers and thunderstorms over much of the NE gulf through much
of next week, with some of the activity capable of producing
strong gusty winds. The combination of these troughs and the high
pressure will allow for generally gentle to moderate southwesterly
winds to continue across the eastern half of the gulf through
the next few days. West winds will increase to strong intensity
on Sun afternoon over the far northern gulf east of 89W, then
diminish to mainly fresh by early Mon. Seas with these winds are
expected to build to around 7 ft with these winds. It is possible
that they may briefly reach 8 ft before the winds diminish. A
surface trough will move off the Yucatan Peninsula into the Bay
of Campeche each evening, accompanied by fresh nocturnal winds.

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

Latest surface observations indicate strong to near gale force
NE-E winds over the south central Caribbean, gentle to moderate
over the western Caribbean, and moderate to fresh winds over the
remainder of the Caribbean waters. Over the tropical N Atlc
waters, moderate winds prevail. Seas are in the 9-12 ft range
over the south central Caribbean, 8-10 ft over the north central
Caribbean, 5-6 ft over the eastern Caribbean, 2-4 ft over the
western Caribbean, and 6-8 ft over the tropical N Atlc forecast
zones. High pressure north of the area will support strong to
near gale force winds in the south-central Caribbean through
Sun night before winds diminish to mainly strong intensity.

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

Latest surface observations indicate moderate to fresh winds
north of the Bahamas off the coast of Florida and S of 21N,while
gentle to moderate winds prevail elsewhere. Outside the Bahamas,
seas are in the 4-6 ft range, and west of the Bahamas seas are
in the 1-2 ft range. A high pressure ridge across the northern
waters will remain in place through Sun before lifting
northward. A mid/upper-level trough along the southeastern U.S.
will continue to promote scattered showers and thunderstorms
across the waters N of 27N through the middle part of next week.

$$

.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 Aguirre. National Hurricane Center.