521 AGXX40 KNHC 171834 MIMATS Marine Weather Discussion NWS National Hurricane Center Miami FL 234 PM EDT Fri Aug 17 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... Scattered showers and tstms over the N central Gulf are locally enhancing the winds to fresh. This area of convection is N of 25N between 85W and 92W and is being supported by the inflow of shallow moisture from the Caribbean by southeasterly winds and middle level diffluent flow. The convection will likely continue for much of the weekend. A surface trough will develop along the Yucatan Peninsula during the late afternoons, then drift westward across the southwest gulf waters during the overnight hours accompanied by a fresh east to southeast wind shift with the trough. Otherwise, an east to west ridge extends across the gulf waters along 28N accompanied by gentle to moderate anticyclonic flow. Winds are forecast to increase to a fresh southerly breeze across the northwest waters on Sun night through early Mon. ...CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... An area of convection over the Gulf of Honduras will move onshore over Belize and the Yucatan Peninsula tonight. Nocturnal near gale force easterly trades are expected along the northwest coast of Colombia tonight followed by strong nocturnal trades through the upcoming weekend. A tropical wave along 72W will continue westward across the western Caribbean waters during the upcoming weekend. A second tropical wave will cross the Leeward Islands late tonight, and pass through the east Caribbean on Sat and Sun accompanied by locally strong convection through Sat. ...SW N ATLANTIC INCLUDING THE BAHAMAS... An east to west ridge extends from high pres centered near 30N70W to N Florida, with light to gentle southerly winds north of the ridge, and gentle to moderate winds elsewhere north of 23N. Mainly fresh trades are south of 23N, except becoming locally strong along the north coast of Hispaniola during the late afternoon into early evening hours. The center of the high will slowly shift NE the next few days, with overall little change in the marine conditions over the region during this time. $$ .WARNINGS...Any changes impacting coastal NWS offices will be coordinated through AWIPS II Collaboration Chat, or by telephone: .GULF OF MEXICO... None. .CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... None. .SW N ATLANTIC INCLUDING THE BAHAMAS... None. $$ *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 Latto. National Hurricane Center.