771 AGXX40 KNHC 090543 MIMATS Marine Weather Discussion NWS National Hurricane Center Miami FL 143 AM EDT Sun Sep 9 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... Weak ridging from the Carolinas to the Texas coast will shift N over the SE United States. Gentle to moderate E to SE winds and modest seas will prevail through the middle of next week. The exception will be fresh winds developing daily to the W of the Yucatan peninsula, mainly during the late evening as surface troughs form over the peninsula and migrate over the Bay of Campeche. ...CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... Tropical Storm Isaac near 14.4N 37.5W 1002 mb at 11 PM EDT moving W at 7 kt. Maximum sustained winds 45 kt gusts 55 kt. Isaac will move to 14.5N 40.9W Sun evening and strengthen to a hurricane near 14.5N 43.5W Mon morning. Isaac will continue W to 14.5N 46.1W Mon evening, and 14.5N 51.5W Tue evening. Isaac will change little in intensity as it approaches the Lesser Antilles near 14.6N 57.0W Wed evening, and continue into the eastern Caribbean near 15.0N 62.9W Thu. Otherwise, relatively weak ridging over the western Atlantic will maintain moderate to fresh trade winds over most of the region through Mon night. Building high pressure over the eastern Gulf of Mexico will allow fresh to locally strong E to SE winds and building seas over portions of the NW Caribbean Sun through Tue, then winds and seas will subside as the ridge weakens. ...SW N ATLANTIC INCLUDING THE BAHAMAS... Tropical Storm Florence near 24.6N 55.2W 989 mb at 11 PM EDT moving W at 5 kt. Maximum sustained winds 60 kt gusts 75 kt. Florence will strengthen to a hurricane near 24.5N 55.9W Sun morning, move to 24.8N 57.4W Sun afternoon, 25.2N 59.3W Mon morning, 25.8N 61.8W Mon afternoon, and 27.5N 67.5W Tue afternoon. Florence will change little in intensity as it moves over the north-central offshores near 30.0N 73.5W Wed evening, then continue to 33.8N 77.8W Thu evening. Otherwise, a weak pressure pattern across the SW N Atlc will maintain gentle to moderate mainly easterly winds across the area through Mon. $$ .WARNINGS...Any changes impacting coastal NWS offices will be coordinated through AWIPS II Collaboration Chat, or by telephone: .GULF OF MEXICO... None. .CARIBBEAN SEA AND TROPICAL N ATLANTIC FROM 07N TO 19N BETWEEN 55W AND 64W... None. .SW N ATLANTIC INCLUDING THE BAHAMAS... None. $$ *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 McElroy. National Hurricane Center.