000 AGXX40 KNHC 280757 MIMATS Marine Weather Discussion NWS National Hurricane Center Miami FL 357 AM EDT Sat Apr 28 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... An old frontal boundary extending from Straits of Florida SW across Yucatan Channel to Belize will drift slowly E through Sat with active weather along and E of boundary. A reinforcing cold front from near Sarasota Florida to Mexican coast just N of Tampico will move SE of the area Sat and merge with old front. A weak surface high will develop over the NW gulf tonight through Sat night with a ridge extending SE to the Straits of Florida. The surface high will shift NE and inland on Sun, then shift E off the Georgia coast on Mon with the ridge then extending west-southwest across the northern gulf waters through Wed. ...CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... An old frontal boundary extending from Belize NE across the NW Caribbean to far W Cuba and Straits of Florida will drift slowly E across the northwest Caribbean tonight and Sat then gradually dissipating by Sun. Very active weather will continue overnight along and E of front. Atlantic high pressure will maintain fresh trades across the entire area south of 17N, with locally strong trades across S central Caribbean along the north coast of South America through Wed. ...SW N ATLANTIC INCLUDING THE BAHAMAS... An old frontal boundary extends from the NW Bahamas near 27N78W SW across the Straits of Florida to W end of Cuba and will meander through Sat night before dissipating. Expect active weather along and E of front for 70W tonight. A cold front over the NW waters will move SE and overrun the frontal remnants Sat night, with the merged front extending from Bermuda to the central Bahamas on Sun. By then a new cold front will enter the northwest waters, race east merging with the first front along a position from 27N65W to central Cuba on Mon night, and then stall from 24N65W to east Cuba early Wed. $$ .WARNINGS...Any changes impacting coastal NWS offices will be coordinated through AWIPS II Collaboration Chat, or by telephone: .GULF OF MEXICO... None. .CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... None. .SW N ATLANTIC INCLUDING THE BAHAMAS... None. $$ *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.