529 AGXX40 KNHC 040620 MIMATS Marine Weather Discussion NWS National Hurricane Center Miami FL 220 AM EDT Sat Aug 4 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 surface trough extending from near Mobile, Alabama to southern Louisiana to the western Bay of Campeche will shift W and inland tonight. The northern portion of a tropical wave will cross the Straits of Florida tonight then cross the southern Gulf this weekend. Surface troughs moving W from the Yucatan Peninsula will produce fresh to locally strong winds over the eastern waters of the Bay of Campeche from sunset to around midnight. Otherwise, high pressure ridging will prevail in the wake of the tropical wave. Gentle to moderate anticyclonic winds will prevail along with 1 to 3 foot seas, except 3 to 5 ft in the SW Gulf due to the pulsing fresh winds. ...CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... Fresh to locally strong trades are expected in the central Caribbean and the Gulf of Honduras through Wed night. The strongest winds will pulse to 30 kt near 12N74W during the overnight hours where seas could peak between 10 and 12 ft. The area of stronger trades will expand in coverage across the central Caribbean by the early part of the week as the pressure gradient across the basin tightens. Winds may approach minimal gale force near the coast of Colombia late Wed night. ...SW N ATLANTIC INCLUDING THE BAHAMAS... Winds will pulse to strong speeds near the northern coast of Hispaniola each night through Wed night. Otherwise, trade winds across the region will gradually diminish through early next week as a ridge across the Atlantic weakens as a backdoor cold front drops down from the N. The front will weaken into a trough by Sun evening. Weak low pressure may develop along the trough through early next week. Ridging will redevelop by the middle next week as the troughing dissipates. Gentle to moderate trades will prevail N of 22N along with 2 to 4 ft seas. $$ .WARNINGS...Any changes impacting coastal NWS offices will be coordinated through AWIPS II Collaboration Chat, or by telephone: .GULF OF MEXICO... None. .CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... None. .SW N ATLANTIC INCLUDING THE BAHAMAS... None. $$ *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 Lewitsky. National Hurricane Center.