000 FZNT24 KNHC 070909 OFFNT4 Offshore Waters Forecast for the Gulf of Mexico NWS National Hurricane Center Miami, FL 509 AM EDT Thu Sep 7 2017 Offshore Waters Forecast for the Gulf of Mexico Seas given as significant wave height, which is the average height of the highest 1/3 of the waves. Individual waves may be more than twice the significant wave height. GMZ001-072115- Synopsis for the Gulf of Mexico 509 AM EDT Thu Sep 7 2017 .SYNOPSIS...Hurricane Katia near 21.5N 94.5W 989 mb at 5 AM EDT nearly stationary. Maximum sustained winds 70 kt gusts 85 kt. Katia is forecast to remain relatively stationary and slowly strengthen through tonight then begin to move SW, reaching near 20.8N 95.8W Fri afternoon and inland near 20.2N 97.1W Fri night, where it will quickly weaken to a post-tropical cyclone. Major Hurricane Irma is forecast to move between Cuba and the Bahamas Fri and Sat, then turn northward across the Florida peninsula Sat night and Sun, bringing tropical storm force winds to eastern portions of the Straits of Florida and Florida Bay in the far SE Gulf late Sat into Sun. $$ GMZ011-072115- NW Gulf including Stetson Bank- 509 AM EDT Thu Sep 7 2017 .TODAY...NE winds 20 to 25 kt. Seas 6 to 7 ft. Scattered showers and isolated thunderstorms. .TONIGHT...NE winds 15 to 20 kt. Seas 6 to 7 ft. Scattered showers and isolated thunderstorms. .FRI...NE to E winds 15 to 20 kt. Seas 7 ft. Scattered showers and isolated thunderstorms. .FRI NIGHT...NE to E winds 15 to 20 kt. Seas 7 ft. Scattered showers and isolated thunderstorms. .SAT...NE winds 15 to 20 kt. Seas 6 to 7 ft. .SAT NIGHT...NE winds 15 to 20 kt. Seas 6 ft. .SUN...NE winds 15 kt. Seas 6 ft. .SUN NIGHT...N to NE winds 15 to 20 kt. Seas 7 ft. .MON...N to NE winds 15 to 20 kt. Seas 7 ft. $$ GMZ013-072115- N Central Gulf including Flower Garden Banks Marine Sanctuary- 509 AM EDT Thu Sep 7 2017 .TODAY...NE to E winds 15 to 20 kt. Seas 6 ft. Scattered showers and isolated thunderstorms. .TONIGHT...NE to E winds 15 to 20 kt. Seas 6 ft. Scattered showers and isolated thunderstorms. .FRI...NE to E winds 15 to 20 kt. Seas 6 to 7 ft. Scattered showers and isolated thunderstorms. .FRI NIGHT...NE winds 15 to 20 kt. Seas 6 to 7 ft. .SAT...NE winds 15 to 20 kt. Seas 6 to 7 ft. .SAT NIGHT...NE winds 20 to 25 kt. Seas 8 to 9 ft. .SUN...NE winds 20 to 25 kt. Seas 9 to 10 ft. .SUN NIGHT...N to NE winds 20 to 25 kt. Seas 8 ft W of 90W, and 11 ft elsewhere. .MON...N winds 20 to 25 kt. Seas 8 ft W of 90W, and 9 to 11 ft elsewhere. $$ GMZ015-072115- NE Gulf N of 25N E of 87W- 509 AM EDT Thu Sep 7 2017 .TODAY...S of 27N, NE to E winds 5 to 10 kt. Seas 2 ft or less. Elsewhere, NE winds 15 to 20 kt. Seas 3 to 4 ft. .TONIGHT...NE winds 15 to 20 kt. Seas 3 ft. .FRI...NE winds 15 to 20 kt. Seas 4 ft. .FRI NIGHT...NE winds 15 to 20 kt. Seas 5 to 6 ft. Scattered showers and isolated thunderstorms. .SAT...TROPICAL STORM CONDITIONS POSSIBLE. NE winds 20 to 25 kt. Seas 8 to 9 ft. .SAT NIGHT...HURRICANE CONDITIONS POSSIBLE. .SUN...HURRICANE CONDITIONS POSSIBLE. .SUN NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. .MON...TROPICAL STORM CONDITIONS POSSIBLE. $$ GMZ017-072115- W Central Gulf from 22N to 26N W of 94W- 509 AM EDT Thu Sep 7 2017 ...TROPICAL STORM WARNING... .TODAY...TROPICAL STORM CONDITIONS POSSIBLE. W of 96W, N to NE winds 20 to 25 kt. Seas 8 ft. Elsewhere, NE to E winds 40 to 45 kt. Seas 11 ft. Scattered showers and thunderstorms. .TONIGHT...TROPICAL STORM CONDITIONS POSSIBLE. N to NE winds 20 to 25 kt W of 96W, and NE to E 30 to 35 kt elsewhere. Seas 10 ft. Scattered showers and thunderstorms. .FRI...TROPICAL STORM CONDITIONS POSSIBLE. NE winds 25 to 30 kt. Seas 9 ft. Scattered showers and thunderstorms. .FRI NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. NE to E winds 15 to 20 kt. Seas 7 to 8 ft. Scattered showers and isolated thunderstorms. .SAT...NE winds 15 to 20 kt. Seas 6 ft. .SAT NIGHT...N to NE winds 15 to 20 kt. Seas 6 ft. .SUN...N to NE winds 15 to 20 kt. Seas 5 ft. .SUN NIGHT...N to NE winds 15 to 20 kt. Seas 7 ft. .MON...N winds 10 to 15 kt. Seas 7 ft. $$ GMZ019-072115- Central Gulf from 22N to 26N between 87W and 94W- 509 AM EDT Thu Sep 7 2017 .TODAY...TROPICAL STORM CONDITIONS POSSIBLE. E winds 25 to 30 kt S of 24N, and E 15 to 20 kt elsewhere. Seas 5 ft. Scattered showers and thunderstorms. .TONIGHT...TROPICAL STORM CONDITIONS POSSIBLE. NE to E winds 25 to 30 kt S of 24N, and NE to E 10 to 15 kt elsewhere. Seas 5 to 6 ft. Scattered showers and thunderstorms. .FRI...TROPICAL STORM CONDITIONS POSSIBLE. NE to E winds 15 to 20 kt. Seas 6 ft. Scattered showers and thunderstorms. .FRI NIGHT...NE winds 15 to 20 kt. Seas 6 ft. Scattered showers and isolated thunderstorms. .SAT...NE winds 15 to 20 kt. Seas 6 ft. .SAT NIGHT...N to NE winds 20 to 25 kt. Seas 7 to 8 ft. .SUN...N to NE winds 20 to 25 kt. Seas 8 to 9 ft. .SUN NIGHT...N to NE winds 20 to 25 kt. Seas 9 ft. .MON...N winds 15 to 20 kt. Seas 9 ft. $$ GMZ021-072115- E Gulf from 22N to 25N E of 87W including Straits of Florida- 509 AM EDT Thu Sep 7 2017 .TODAY...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, building to 3 ft late. .FRI...NE winds 10 to 15 kt. Seas 3 to 4 ft. Scattered showers and isolated thunderstorms. .FRI NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. N to NE winds 20 to 25 kt. Seas 4 to 6 ft. .SAT...HURRICANE CONDITIONS POSSIBLE. Straits of Florida, N to NE winds 25 to 30 kt, becoming N 35 to 40 kt in the afternoon. Elsewhere, N to NE winds 20 to 25 kt. Seas 7 to 9 ft. .SAT NIGHT...HURRICANE CONDITIONS POSSIBLE. .SUN...HURRICANE CONDITIONS POSSIBLE. .SUN NIGHT...NW winds 25 to 30 kt. Seas 12 to 13 ft. .MON...NW winds 15 to 20 kt. Seas 9 to 11 ft. $$ GMZ023-072115- SW Gulf S of 22N W of 94W- 509 AM EDT Thu Sep 7 2017 ...HURRICANE WARNING... .TODAY...TROPICAL STORM CONDITIONS. S of 21N W of 95W, W to NW winds 25 to 30 kt. Seas 10 to 11 ft. Elsewhere, NW winds 60 to 75 kt. Seas 15 to 17 ft. Scattered to numerous thunderstorms. .TONIGHT...TROPICAL STORM CONDITIONS EXPECTED. S of 21N W of 95W, W to NW winds 30 to 35 kt. Seas 12 to 14 ft. Elsewhere, NW winds 65 to 75 kt. Seas 18 to 19 ft. Scattered showers and thunderstorms. .FRI...HURRICANE CONDITIONS EXPECTED. S of 21N W of 95W, W to NW winds 50 to 55 kt, becoming W 65 to 75 kt in the afternoon. Elsewhere, W winds 65 to 75 kt, shifting to SE to S in the afternoon. Seas 18 ft. Showers and thunderstorms. .FRI NIGHT...TROPICAL STORM CONDITIONS EXPECTED. S of 21N W of 95W, SW winds 60 to 75 kt. Seas 15 to 19 ft. Elsewhere, E to SE winds 55 to 60 kt, becoming E 25 to 30 kt late. Seas 15 ft, subsiding to 10 ft late. Scattered thunderstorms. .SAT...TROPICAL STORM CONDITIONS POSSIBLE. S of 21N W of 95W, SE winds 30 to 35 kt, becoming N 5 to 10 kt in the afternoon. Elsewhere, NE winds 15 to 20 kt. Seas 7 ft, subsiding to 4 ft in the afternoon. .SAT NIGHT...N winds 10 to 15 kt. Seas 4 ft. .SUN...N winds 15 to 20 kt. Seas 5 ft. .SUN NIGHT...N winds 15 to 20 kt. Seas 5 to 6 ft. .MON...NW to N winds 15 to 20 kt. Seas 6 to 7 ft. $$ GMZ025-072115- E Bay of Campeche including Campeche Bank- 509 AM EDT Thu Sep 7 2017 ...TROPICAL STORM WARNING... .TODAY...TROPICAL STORM CONDITIONS POSSIBLE. Within 60 nm of coast of Campeche, E winds 10 to 15 kt, shifting to S in the afternoon. Elsewhere, SE winds 45 to 55 kt. Seas 4 to 5 ft Within 60 nm of coast of Campeche, and 8 to 9 ft elsewhere. Scattered thunderstorms. .TONIGHT...TROPICAL STORM CONDITIONS POSSIBLE. Within 60 nm of coast of Campeche, NW winds 5 to 10 kt, shifting to N to NE 10 to 15 kt late. Elsewhere, W to NW winds 40 to 45 kt, becoming NE 25 to 30 kt late. Seas 5 ft Within 60 nm of coast of Campeche, and 10 ft elsewhere. Scattered showers and thunderstorms. .FRI...TROPICAL STORM CONDITIONS POSSIBLE. Within 60 nm of coast of Campeche, E winds 10 to 15 kt, shifting to SE to S 5 to 10 kt in the afternoon. Elsewhere, SE winds 20 to 25 kt. Seas 5 ft Within 60 nm of coast of Campeche, and 8 to 9 ft elsewhere. Scattered showers and isolated thunderstorms. .FRI NIGHT...N to NE winds 10 to 15 kt. Seas 6 to 7 ft. Scattered showers and isolated thunderstorms. .SAT...NE winds 5 to 10 kt. Seas 4 to 5 ft. .SAT NIGHT...N to NE winds 10 to 15 kt. Seas 4 ft. .SUN...N winds 10 to 15 kt. Seas 4 ft. .SUN NIGHT...N winds 10 to 15 kt. Seas 3 ft Within 60 nm of coast of Campeche, and 5 to 6 ft elsewhere. .MON...NW to N winds 10 to 15 kt. Seas 3 ft Within 60 nm of coast of Campeche, and 6 ft elsewhere. $$ Forecaster Stripling