000 FZNT24 KNHC 091503 OFFNT4 Offshore Waters Forecast for the Gulf of Mexico NWS National Hurricane Center Miami, FL 1103 AM EDT Sat Sep 9 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. GMZ001-100315- Synopsis for the Gulf of Mexico 1103 AM EDT Sat Sep 9 2017 .SYNOPSIS...The remnant low of former Tropical Storm Katia is centered just inland Mexico near 20.0N 97.9W 1004 mb at 11 AM EDT moving WSW at 2 kt. Maximum winds 30 kt with gusts to 40 kt. The low will dissipate by early this evening. Major Hurricane Irma currently along the N central coast of Cuba is forecast to enter the eastern Straits of Florida this afternoon, reach near 23.4N 80.7W early tonight, then turn NW into the Gulf of Mexico to near 24.5N 81.6W by early Sunday, and track northward over the Florida peninsula during the rest of Sunday and Sunday night. Irma will bring tropical storm force and hurricane force winds to the eastern portions of the Straits of Florida and Florida Bay and far SE Gulf late this afternoon and through late today into Sunday. Tropical storm and hurricane conditions will spread northward along the far eastern Gulf through early Monday afternoon, before lifting N of the Gulf Monday night. $$ GMZ011-100315- NW Gulf including Stetson Bank- 1103 AM EDT Sat Sep 9 2017 .TODAY...NE winds 15 kt. Seas 5 to 7 ft. .TONIGHT...NE winds 15 to 20 kt. Seas 5 ft. .SUN...NE winds 15 kt. Seas 5 to 6 ft. .SUN NIGHT...N to NE winds 15 to 20 kt. Seas 6 to 8 ft. .MON...N to NE winds 15 kt. Seas 6 to 8 ft in E swell. .MON NIGHT...N winds 10 to 15 kt. Seas 6 to 8 ft in E swell. .TUE...NW to N winds 5 to 10 kt. Seas 4 to 6 ft in NE to E swell. .TUE NIGHT...NW winds 5 to 10 kt. Seas 3 to 4 ft. .WED...S to SW winds 5 to 10 kt. Seas 2 ft or less. .WED NIGHT...S winds 10 to 15 kt. Seas 2 ft or less. $$ GMZ013-100315- N Central Gulf including Flower Garden Banks Marine Sanctuary- 1103 AM EDT Sat Sep 9 2017 .TODAY...NE winds 15 to 20 kt. Seas 5 to 7 ft. .TONIGHT...NE winds 15 to 20 kt. Seas 6 to 9 ft in NE swell. .SUN...NE winds 20 to 25 kt. Seas 7 to 10 ft in NE to E swell. .SUN NIGHT...N to NE winds 20 to 25 kt. Seas 8 to 13 ft in NE to E swell. .MON...N winds 15 to 20 kt. Seas 8 to 13 ft in NE to E swell. .MON NIGHT...NW to N winds 15 to 20 kt. Seas 7 to 10 ft in NE swell. .TUE...NW winds 10 to 15 kt. Seas 4 to 6 ft. .TUE NIGHT...W to NW winds 5 to 10 kt. Seas 3 to 4 ft. .WED...SW to W winds 5 to 10 kt. Seas 2 ft or less. .WED NIGHT...SW winds 5 to 10 kt. Seas 2 ft or less. $$ GMZ015-100315- NE Gulf N of 25N E of 87W- 1103 AM EDT Sat Sep 9 2017 ...HURRICANE WARNING... .TODAY...TROPICAL STORM CONDITIONS POSSIBLE. NE winds 20 to 25 kt. Seas 8 to 9 ft. Scattered showers and isolated thunderstorms. .TONIGHT...TROPICAL STORM CONDITIONS EXPECTED. N to NE winds 35 to 45 kt S of 27N, and NE 20 to 25 kt elsewhere. Seas 9 to 12 ft. Scattered showers and isolated thunderstorms. .SUN...TROPICAL STORM CONDITIONS EXPECTED. S of 27N, N winds 50 to 70 kt. Elsewhere, NE winds 25 to 30 kt, becoming N to NE 35 to 40 kt in the afternoon. Seas 15 to 21 ft S of 27N, and 10 to 13 ft elsewhere. Scattered showers and thunderstorms. VSBY 1 NM or less. .SUN NIGHT...TROPICAL STORM CONDITIONS EXPECTED. S of 27N, NW to N winds 50 to 70 kt. Seas 18 to 23 ft. Elsewhere, N winds 45 to 55 kt. Seas 14 to 19 ft. Numerous squalls and thunderstorms. .MON...HURRICANE CONDITIONS POSSIBLE. S of 27N, NW winds 45 to 50 kt, diminishing to 30 to 35 kt in the afternoon. Elsewhere, NW winds 45 to 55 kt. Seas 16 to 18 ft. Scattered showers and isolated thunderstorms. .MON NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. .TUE...SW to W winds 15 to 20 kt. Seas 6 to 8 ft. .TUE NIGHT...SW to W winds 10 to 15 kt. Seas 4 to 5 ft. .WED...S to SW winds 10 to 15 kt. Seas 3 to 4 ft. .WED NIGHT...S to SW winds 5 to 10 kt. Seas 2 to 3 ft. $$ GMZ017-100315- W Central Gulf from 22N to 26N W of 94W- 1103 AM EDT Sat Sep 9 2017 .TODAY...NE winds 10 to 15 kt. Seas 5 to 7 ft. Scattered showers and isolated thunderstorms. .TONIGHT...N to NE winds 15 to 20 kt. Seas 4 to 5 ft. Scattered thunderstorms and isolated thunderstorms. .SUN...N to NE winds 10 to 15 kt. Seas 4 to 6 ft. Scattered thunderstorms and isolated thunderstorms. .SUN NIGHT...N to NE winds 15 to 20 kt. Seas 6 to 8 ft. Scattered thunderstorms and isolated thunderstorms. .MON...N winds 10 to 15 kt. Seas 6 to 9 ft in NE to E swell. .MON NIGHT...N winds 10 to 15 kt. Seas 6 to 8 ft in NE to E swell. .TUE...NW to N winds 5 to 10 kt. Seas 5 to 7 ft in NE to E swell. .TUE NIGHT...N winds 5 to 10 kt. Seas 4 to 6 ft in NE to E swell. .WED...S to SW winds 5 to 10 kt. Seas 3 to 5 ft. .WED NIGHT...SE to S winds 10 to 15 kt. Seas 2 ft or less. $$ GMZ019-100315- Central Gulf from 22N to 26N between 87W and 94W- 1103 AM EDT Sat Sep 9 2017 .TODAY...NE winds 15 to 20 kt. Seas 5 to 7 ft. Scattered thunderstorms and isolated thunderstorms. .TONIGHT...N to NE winds 15 to 20 kt. Seas 6 to 9 ft in NE to E swell. Scattered thunderstorms and isolated thunderstorms. .SUN...N to NE winds 15 to 20 kt. Seas 7 to 10 ft in NE to E swell. Scattered thunderstorms and isolated thunderstorms. .SUN NIGHT...N winds 15 to 20 kt. Seas 8 to 11 ft in NE to E swell. Scattered thunderstorms and isolated thunderstorms. .MON...N winds 10 to 15 kt. Seas 8 to 11 ft in NE swell. .MON NIGHT...N winds 10 to 15 kt. Seas 6 to 9 ft in NE swell. .TUE...NW winds 5 to 10 kt. Seas 5 to 7 ft in NE swell. .TUE NIGHT...W to NW winds 5 to 10 kt. Seas 3 to 5 ft. .WED...SW winds 5 to 10 kt. Seas 3 to 4 ft. .WED NIGHT...S winds 5 to 10 kt. Seas 2 ft or less. $$ GMZ021-100315- E Gulf from 22N to 25N E of 87W including Straits of Florida- 1103 AM EDT Sat Sep 9 2017 ...HURRICANE WARNING... .TODAY...TROPICAL STORM CONDITIONS. N winds 55 to 60 kt Straits of Florida, and N to NE 20 to 25 kt elsewhere. Straits of Florida, seas 13 ft, building to 18 ft in the afternoon. Elsewhere, seas 9 to 10 ft. Numerous squalls and thunderstorms. .TONIGHT...HURRICANE CONDITIONS EXPECTED. N winds 80 to 100 kt Straits of Florida, and N 30 to 40 kt elsewhere. Straits of Florida, seas 24 to 33 ft, except 38 to 50 ft E of 82W. Elsewhere, seas 13 ft, building to 18 ft late. Numerous squalls and thunderstorms. VSBY 1 NM or less. .SUN...TROPICAL STORM CONDITIONS EXPECTED. Straits of Florida, NW winds 75 to 85 kt, diminishing to 45 to 50 kt in the afternoon. Seas 24 to 36 ft, except 38 to 50 ft E of 82W, subsiding to 18 to 25 ft in the afternoon. Elsewhere, NW to N winds 40 to 50 kt. Seas 19 to 21 ft. Numerous squalls and thunderstorms. .SUN NIGHT...TROPICAL STORM CONDITIONS EXPECTED. Straits of Florida, NW winds 30 to 35 kt, becoming W to NW 15 to 20 kt late. Elsewhere, NW to N winds 45 to 50 kt, becoming NW 35 to 40 kt late. Seas 15 to 16 ft. .MON...W to NW winds 20 to 25 kt. Seas 10 to 11 ft Straits of Florida, and 12 to 14 ft in NW swell elsewhere. .MON NIGHT...NW winds 15 to 20 kt. Seas 9 to 10 ft in NW swell. .TUE...SW to W winds 5 to 10 kt. Seas 6 to 7 ft in NW swell. .TUE NIGHT...S to SW winds 5 kt. Seas 4 to 5 ft in NW swell. .WED...S to SW winds 5 to 10 kt. Seas 3 to 4 ft. .WED NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. $$ GMZ023-100315- SW Gulf S of 22N W of 94W- 1103 AM EDT Sat Sep 9 2017 ...TROPICAL STORM WARNING... .TODAY...S of 21N W of 95W, NE winds 20 to 25 kt, becoming N 5 to 10 kt in the afternoon. Elsewhere, N to NE winds 5 to 10 kt. Seas 4 to 6 ft. Scattered showers and isolated thunderstorms. .TONIGHT...N winds 10 to 15 kt. Seas 3 to 4 ft. Scattered showers and isolated thunderstorms. .SUN...N winds 10 to 15 kt. Seas 3 to 5 ft. Scattered showers and isolated thunderstorms. .SUN NIGHT...N winds 10 to 15 kt. Seas 3 to 5 ft. Scattered showers and isolated thunderstorms. .MON...NW to N winds 10 to 15 kt. Seas 4 to 6 ft. .MON NIGHT...NW to N winds 10 to 15 kt. Seas 4 to 6 ft. .TUE...NW to N winds 10 to 15 kt. Seas 5 to 7 ft. .TUE NIGHT...N winds 5 to 10 kt. Seas 4 to 6 ft in NE swell. .WED...S to SW winds 5 to 10 kt. Seas 3 to 5 ft. .WED NIGHT...SE winds 5 to 10 kt. Seas 3 to 4 ft. $$ GMZ025-100315- E Bay of Campeche including Campeche Bank- 1103 AM EDT Sat Sep 9 2017 .TODAY...N to NE winds 5 to 10 kt. Seas 3 to 5 ft. Scattered showers and isolated thunderstorms. .TONIGHT...N to NE winds 10 to 15 kt. Seas 3 to 4 ft. Scattered showers and isolated thunderstorms. .SUN...N winds 10 to 15 kt. Seas 3 to 5 ft. Scattered showers and isolated thunderstorms. .SUN NIGHT...N winds 10 to 15 kt. Seas 4 to 6 ft. Scattered showers and isolated thunderstorms. .MON...NW to N winds 10 to 15 kt. Seas 4 to 6 ft. .MON NIGHT...NW to N winds 10 to 15 kt. Seas 4 to 6 ft. .TUE...NW winds 5 to 10 kt. Seas 3 to 5 ft. .TUE NIGHT...NW winds 5 to 10 kt. Seas 3 to 5 ft. .WED...SW winds less than 5 kt. Seas 3 to 4 ft in N to NE swell. .WED NIGHT...E winds less than 5 kt. Seas 2 ft or less. $$ Forecaster Aguirre