087
AGXX40 KNHC 211955
MIMATS

Marine Weather Discussion
NWS National Hurricane Center Miami FL
355 PM EDT Tue Aug 21 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 weak E to W ridge will extend across the gulf waters along
26N-27N with a surface high developing along the ridge near
27N93W today, then meander over the northwest gulf through late
Thu. A weak frontal trough will move SE into the NE and N
central gulf waters Wed where it will stall along 26N-27N on
Thu, and then drift W and dissipate on Fri. Typical Yucatan
thermal trough will develop each late afternoon-evening and
shift W across SW Gulf waters overnight. Models indicating only
brief evening winds aoa 20 kt. High pres will build SW across
entire basin late Fri and Sat to produce light to moderate
anticyclonic wind flow area wide.

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

Strong nocturnal easterly trades are expected along NW Colombia
waters and Gulf of Venezuela through early Thu, with the strong
winds reaching as far north as 15N. A tropical wave along 83W
will continue west and across the western Caribbean tonight. A
second tropical wave along 64W will move across the central
Caribbean during mid week. A third tropical wave in the central
Atlantic along 38W will reach along 55W on Thu. Atlantic basin
remains unusually quiet, and stable with aforementioned waves
not expected to produce atypical wave related weather. Atlc and
Carib seas remain aob normal heights.

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

Atlc ridge will meander from the central Atlc to Port Canaveral
Florida for the next several days. A broad N to S oriented
trough across the NW Bahamas will move WNW across the Bahamas
today and dissipate tonight. Gentle to locally moderate southerly
winds are expected north of ridge, moderate to fresh trades are
expected south of 23N, while a gradual wind shift is forecast
along the trough.

$$

.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 Stripling. National Hurricane Center.