000 FZNT25 KNHC 280939 OFFN04 NAVTEX Marine Forecast NWS National Hurricane Center Miami, FL 539 AM EDT Thu Sep 28 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...Weak high pressure will continue across the northern waters through today, then weaken further allowing for a cold front to push S to over the northern Gulf waters on Thu night. The front will stall from near Tampa Bay to the far western Gulf by Friday evening, then gradually dissipate during the upcoming weekend as strengthening high pressure builds S across the northern Gulf waters. The associated gradient will increase the NE to E winds across the northern Gulf waters E of 90W beginning on Sunday and into Monday. A thermal trough will develop each evening over the NW Yucatan Peninsula, move W overnight, and dissipate over the SW Gulf waters by late each morning. .TODAY...NE to E winds 5 to 10 kt. Seas 2 ft or less. Scattered showers and thunderstorms. .TONIGHT...NE to E winds 5 to 10 kt. Seas 2 ft or less. Scattered showers and thunderstorms. .FRI...NE to E winds 5 to 10 kt. Seas 2 ft or less. Scattered to numerous showers and thunderstorms. .FRI NIGHT...E winds 5 to 10 kt. Seas 2 ft or less. Scattered to numerous showers and thunderstorms. .SAT...E to SE winds 10 to 15 kt. Seas 2 ft or less. .SAT NIGHT...E winds 10 to 15 kt. Seas 2 ft or less. .SUN...E winds 10 to 15 kt. Seas 2 to 3 ft. .SUN NIGHT...E winds 10 to 15 kt. Seas 2 to 3 ft. .MON...E winds 10 to 15 kt. Seas 3 to 4 ft. .MON NIGHT...E winds 15 to 20 kt. Seas 3 to 5 ft. Within 200 nm east of the coast of Florida .SYNOPSIS...A trough will extend SW from 31N75W to the Central Bahamas through Thursday night, then become diffuse on Friday. A weak cold front will move into the northern waters on Friday, then stall from near 31N65W to the NW Bahamas on Saturday, with a surface low developing along the front near 28N79W. The low will move NE along the weakening front to N of the area on Saturday night and into Sunday. Strong high pressure will surge southward over the NW waters behind the stalled and weakening front. The associated tight pressure gradient is expected to bring strong to near gale force NE winds across the waters W of a line from near 31N75W to 28N80W on Sunday along with building seas. Winds then diminish some on Monday. .TODAY...E to SE winds 5 to 10 kt S of 27N, and NE less than 5 kt N of 27N. Seas 3 to 5 ft in NE swell S of 27N, and 5 to 7 ft in NE swell N of 27N. Scattered showers and isolated thunderstorms N of 27N. Scattered showers and thunderstorms S of 27N. .TONIGHT...SE to S winds 10 to 15 kt S of 27N, and SE 5 to 10 kt N of 27N. Seas 3 to 5 ft S of 27N, and 4 to 6 ft in NE to E swell N of 27N. Scattered showers and isolated thunderstorms N of 27N. Scattered showers and thunderstorms S of 27N. .FRI...S winds 10 to 15 kt S of 27N, and SE 10 to 15 kt N of 27N. Seas 3 to 5 ft S of 27N, and 4 to 6 ft N of 27N. Scattered showers and isolated thunderstorms N of 27N. Scattered to numerous showers and thunderstorms S of 27N. .FRI NIGHT...SE to S winds 10 to 15 kt S of 27N, and SE to S 15 to 20 kt N of 27N. Seas 3 to 5 ft S of 27N, and 5 to 7 ft N of 27N. Scattered showers and isolated thunderstorms N of 27N. Scattered to numerous showers and thunderstorms S of 27N. .SAT...S of 27N, SE winds 10 to 15 kt. Seas 3 to 5 ft. N of 27N, S winds 10 to 15 kt. Seas 6 to 8 ft in SE to S swell. SE to S winds 10 to 15 kt. Seas 3 to 5 ft. .SAT NIGHT...S of 27N, SE winds 10 to 15 kt. Seas 3 to 5 ft. N of 27N, SE to S winds 20 to 25 kt. Seas 6 to 9 ft. .SUN...S of 27N, E to SE winds 10 to 15 kt. Seas 3 to 4 ft. N of 27N, SE winds 20 to 25 kt, except 25 to 30 kt N of 30N W of 79W. Seas 7 to 10 ft, except 10 to 14 ft N of 30N W of 79W. .SUN NIGHT...S of 27N, E to SE winds 15 to 20 kt. Seas 3 to 5 ft. N of 27N, E to SE winds 20 to 25 kt. Seas 7 to 10 ft, except 9 to 12 ft N of 30N W of 79W. .MON...E to SE winds 15 to 20 kt. Seas 4 to 6 ft. .MON NIGHT...E winds 15 to 20 kt. Seas 4 to 6 ft.