000 FZNT25 KNHC 051515 OFFN04 NAVTEX Marine Forecast NWS National Hurricane Center Miami, FL 1115 AM EDT Tue Sep 5 2017 ...Please refer to Coastal Waters Forecasts (CWF) available through NOAA Weather Radio and other means for detailed Coastal Waters Forecasts... Southeast Gulf of Mexico .SYNOPSIS...A weak cold front will sink SE across the NW and N Gulf Wed, before stalling from the NE Gulf to central Gulf Fri, then lifting N while dissipating Sat. Hurricane Irma is forecast to approach the Straits of Florida Fri night, and reach near 24.0N 81.0W Sat night as a major hurricane. .THIS AFTERNOON...NE to E winds 5 to 10 kt. Seas 2 ft or less. .TONIGHT...NE winds 10 to 15 kt. Seas 2 ft or less. .WED...E winds 5 to 10 kt. Seas 2 ft or less. Scattered showers. .WED NIGHT...N to NE winds 5 to 10 kt. Seas 2 ft or less. .THU...NE to E winds 10 to 15 kt. Seas 2 ft or less. .THU NIGHT...NE winds 10 to 15 kt. Seas 3 ft. .FRI...NE winds 15 to 20 kt. Seas 3 to 4 ft. .FRI NIGHT... HURRICANE CONDITIONS POSSIBLE. .SAT AND SAT NIGHT... HURRICANE CONDITIONS POSSIBLE. Within 200 nm east of the coast of Florida .SYNOPSIS...Major Hurricane Irma at 16.8N 58.4W 931 mb at 1500 UTC moving W at 12 kt with maximum sustained winds 155 kt gusts to 190 kt. Irma will being to turn more WNW today and reach near 17.2N 60.3W this evening, near 18.1N 63.0W early Wed, near 19.1N 65.9W Wed evening, near 20.1N 68.1W Thu morning, near 21.4N 74.0W Fri morning, then into the Straits of Florida near 22.7N 78.3W Sat morning before turning NW Sun. .THIS AFTERNOON...E to SE winds 5 to 10 kt. Seas 3 to 4 ft. .TONIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. .WED...SE winds 5 to 10 kt. Seas 3 to 5 ft. .WED NIGHT...SE winds 10 to 15 kt. Seas 3 to 6 ft. .THU...E to SE winds 5 to 10 kt. Seas 3 to 8 ft in NE to E swell. .THU NIGHT...NE winds 15 to 20 kt. Seas 3 to 12 ft. .FRI... HURRICANE CONDITIONS POSSIBLE. .FRI NIGHT... HURRICANE CONDITIONS POSSIBLE. .SAT AND SAT NIGHT... HURRICANE CONDITIONS POSSIBLE.