000 AGXX40 KNHC 141707 MIMATS Marine Weather Discussion NWS National Hurricane Center Miami FL 107 PM EDT Wed Apr 14 2021 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 backdoor cold front will dissipate over the eastern and central Gulf later today. High pressure will prevail across the basin through Wed night. A cold front will reach the northern Gulf Thu, then stall and weaken on Fri. A stronger cold front will move into the Northwest Gulf on Sat, with strong northerly winds and building seas expected across the western Gulf this weekend. ...CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... An Ashfall Advisory is in effect for La Soufriere Volcano on the island of St. Vincent near 13.3N 61.2W. Mariners transiting the nearby waters should exercise caution, and are encouraged to report volcanic ash to the National Hurricane Center by calling 305-229-4424. Moderate to fresh trade winds will prevail across the Caribbean through Sat, except pulsing locally to fresh to strong through the Windward Passage, south of Hispaniola, and north of Colombia through mid week, then in the south-central Caribbean this weekend. SE winds will pulse to fresh to strong in the Northwest Caribbean starting early Fri. Gentle to moderate winds are expected elsewhere. ...SW N ATLANTIC INCLUDING THE BAHAMAS... A weakening cold front north of Hispaniola and Puerto Rico will move eastward through early today. Fresh to strong northerly winds associated with reinforcing cold air north of the front and east of 70W will shift eastward today and weaken. Another cold front will move east of northern Florida into the northern waters by early Fri, then stall north of the Bahamas this weekend. $$ .WARNINGS...Any changes impacting coastal NWS offices will be coordinated through AWIPS II Collaboration Chat, or by telephone: .GULF OF MEXICO... None. .CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... .AMZ035...OFFSHORE WATERS WINDWARD ISLANDS INCLUDING TRINIDAD AND TOBAGO... Ashfall Advisory today into tonight. .AMZ037...TROPICAL N ATLANTIC FROM 07N TO 15N BETWEEN 55W AND 65W... Ashfall Advisory today into tonight. .SW N ATLANTIC INCLUDING THE BAHAMAS... None. $$ *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.