935 AGXX40 KNHC 110536 MIMATS Marine Weather Discussion NWS National Hurricane Center Miami FL 136 AM EDT Tue Sep 11 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 over the far western Caribbean will move across the Yucatan Peninsula Tue, and into the western Gulf of Mexico Wed. The trough will approach the shore of Mexico Thu, and pass to the west of the basin Sat. ...CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... Isaac has weakened to tropical storm strength near 14.5N 46.9W 997 mb at 11 PM EDT moving W at 14 kt. Maximum sustained winds 60 kt gusts 75 kt. Isaac will move to 14.5N 49.0W Tue morning, then become a minimal hurricane near 14.6N 51.7W Tue evening. Isaac will continue to 14.8N 54.3W Wed morning, 15.0N 56.9W Wed evening. Isaac will weaken to a tropical storm near 15.4N 62.4W Thu evening, and continue weakening slowly as it moves to 15.5N 68.0W Fri evening and to 15.5N 72.5W Sat evening. ...SW N ATLANTIC INCLUDING THE BAHAMAS... Hurricane Florence near 25.9N 62.4W 944 mb at 11 PM EDT moving WNW at 11 kt. Florence will remain an extremely dangerous major hurricane through Thursday. Maximum sustained winds 120 kt gusts 145 kt. Florence will move to 26.5N 64.5W Tue morning, 27.9N 67.5W Tue evening, 29.6N 70.4W Wed morning, 31.3N 73.2W Wed evening, and pass north of the area to near 34.0N 76.5W Thu evening. Winds and seas associated with Florence will subside by Fri evening. A large area of E swell generated by Isaac and Helene will cause seas to build to between 8 and 10 ft E of the Bahamas and Leeward Islands Fri through Sat, then seas will subside below 8 ft as the swell disperse. $$ .WARNINGS...Any changes impacting coastal NWS offices will be coordinated through AWIPS II Collaboration Chat, or by telephone: .GULF OF MEXICO... None. .CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... .AMZ027...TROPICAL N ATLANTIC FROM 15N TO 19N BETWEEN 55W AND 60W... Tropical Storm Warning Wed into Wed night. .AMZ037...TROPICAL N ATLANTIC FROM 07N TO 15N BETWEEN 55W AND 65W... Tropical Storm Warning Wed into Wed night. .SW N ATLANTIC INCLUDING THE BAHAMAS... .AMZ113...ATLANTIC FROM 27N TO 31N BETWEEN 70W AND 77W... Hurricane Warning tonight into Wed night. .AMZ115...ATLANTIC FROM 27N TO 31N BETWEEN 65W AND 70W... Tropical Storm Warning early today. Hurricane Warning today into Wed. .AMZ121...ATLANTIC FROM 22N TO 27N BETWEEN 65W AND 70W... Tropical Storm Warning early today. Hurricane Warning today. Tropical Storm Warning tonight. $$ *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 McElroy. National Hurricane Center.