000 FZNT24 KNHC 080258 OFFNT4 Offshore Waters Forecast for the Gulf of Mexico NWS National Hurricane Center Miami, FL 1058 PM 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. GMZ001-081500- Synopsis for the Gulf of Mexico 1058 PM EDT Thu Sep 7 2017 .SYNOPSIS...Hurricane Katia near 21.5N 95.1W 982 mb at 11 PM EDT moving SW at 3 kt. Maximum sustained winds 75 kt gusts 90 kt. Katia is forecast to move to near 21.3N 95.5W Fri morning, then to near 20.8N 96.4W Fri evening, then to near 19.9N 97.5W Sat morning while moving inland and weakening to a tropical storm, then near 19.3N 98.3W as a tropical depression Sat evening, then dissipating by Sun evening. Major Hurricane Irma is forecast to enter the eastern Straits of Florida Sat afternoon, 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. $$ GMZ011-081500- NW Gulf including Stetson Bank- 1058 PM EDT Thu Sep 7 2017 .OVERNIGHT...NE winds 15 to 20 kt. Seas 7 ft. .FRI...NE to E winds 15 to 20 kt. Seas 8 ft. Scattered showers and isolated thunderstorms. .FRI NIGHT...NE to E winds 15 to 20 kt. Seas 8 ft. .SAT...NE winds 15 to 20 kt. Seas 7 ft. .SAT NIGHT...NE winds 15 to 20 kt. Seas 6 ft. .SUN...NE winds 15 kt. Seas 6 ft. .SUN NIGHT...N to NE winds 15 to 20 kt. Seas 6 ft. .MON...N to NE winds 15 to 20 kt. Seas 6 ft. .MON NIGHT...N winds 10 to 15 kt. Seas 6 ft. .TUE...NW to N winds 5 to 10 kt. Seas 4 to 5 ft. $$ GMZ013-081500- N Central Gulf including Flower Garden Banks Marine Sanctuary- 1058 PM EDT Thu Sep 7 2017 .OVERNIGHT...NE to E winds 15 to 20 kt. Seas 6 to 7 ft. .FRI...NE to E winds 15 to 20 kt. Seas 7 ft. .FRI NIGHT...NE winds 15 to 20 kt. Seas 7 ft. .SAT...NE winds 15 to 20 kt. Seas 7 ft. .SAT NIGHT...NE winds 20 to 25 kt. Seas 8 to 9 ft. .SUN...NE winds 20 to 25 kt. Seas 9 ft. .SUN NIGHT...N to NE winds 20 to 25 kt. Seas 10 ft. .MON...N winds 20 to 25 kt. Seas 8 to 10 ft. .MON NIGHT...NW to N winds 15 to 20 kt. Seas 6 to 7 ft. .TUE...NW winds 10 to 15 kt. Seas 4 to 5 ft. $$ GMZ015-081500- NE Gulf N of 25N E of 87W- 1058 PM EDT Thu Sep 7 2017 ...HURRICANE CONDITIONS POSSIBLE SAT NIGHT THROUGH MON... .OVERNIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. .FRI...NE winds 15 to 20 kt. Seas 4 to 5 ft. .FRI NIGHT...NE winds 15 to 20 kt. Seas 5 to 6 ft. Scattered showers and isolated thunderstorms. .SAT...TROPICAL STORM CONDITIONS POSSIBLE. NE winds 20 to 25 kt. Seas 7 to 8 ft. Scattered showers and isolated thunderstorms. .SAT NIGHT...HURRICANE CONDITIONS POSSIBLE. S of 27N, N to NE winds 25 to 30 kt, increasing to 35 to 40 kt late. Elsewhere, NE winds 25 to 30 kt. Seas 10 to 11 ft. Scattered showers and isolated thunderstorms. .SUN...HURRICANE CONDITIONS POSSIBLE. .SUN NIGHT...HURRICANE CONDITIONS POSSIBLE. .MON...HURRICANE CONDITIONS POSSIBLE. .MON NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. .TUE...SW to W winds 15 to 20 kt. Seas 5 to 6 ft. $$ GMZ017-081500- W Central Gulf from 22N to 26N W of 94W- 1058 PM EDT Thu Sep 7 2017 ...TROPICAL STORM WARNING... .OVERNIGHT...TROPICAL STORM CONDITIONS. W of 96W, N to NE winds 20 to 25 kt. Seas 10 ft. Elsewhere, NE winds 40 to 45 kt. Seas 13 ft. Scattered showers and isolated thunderstorms. .FRI...TROPICAL STORM CONDITIONS POSSIBLE. NE winds 20 to 25 kt W of 96W, and NE to E 30 to 35 kt elsewhere. Seas 10 ft. Scattered showers and isolated thunderstorms. .FRI NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. NE to E winds 15 to 20 kt. Seas 8 to 9 ft. .SAT...NE winds 15 to 20 kt. Seas 7 ft. Scattered showers and isolated thunderstorms. .SAT NIGHT...N to NE winds 15 to 20 kt. Seas 6 ft. Scattered showers and isolated thunderstorms. .SUN...N to NE winds 15 to 20 kt. Seas 5 ft. .SUN NIGHT...N to NE winds 15 to 20 kt. Seas 6 to 7 ft. .MON...N winds 10 to 15 kt. Seas 7 ft. .MON NIGHT...N winds 10 to 15 kt. Seas 7 ft. .TUE...NW to N winds 5 to 10 kt. Seas 5 to 6 ft. $$ GMZ019-081500- Central Gulf from 22N to 26N between 87W and 94W- 1058 PM EDT Thu Sep 7 2017 .OVERNIGHT...NE to E winds 20 to 25 kt S of 24N, and NE to E 10 to 15 kt elsewhere. Seas 7 ft. .FRI...NE to E winds 15 to 20 kt. Seas 7 ft. .FRI NIGHT...NE winds 15 to 20 kt. Seas 6 ft. .SAT...NE winds 15 to 20 kt. Seas 7 ft. .SAT NIGHT...N to NE winds 20 to 25 kt. Seas 7 to 8 ft. .SUN...N to NE winds 20 to 25 kt. Seas 8 ft. .SUN NIGHT...N to NE winds 20 to 25 kt. Seas 8 ft. .MON...N winds 15 to 20 kt. Seas 8 ft. .MON NIGHT...N winds 10 to 15 kt. Seas 7 ft. .TUE...NW winds 5 to 10 kt. Seas 5 to 6 ft. $$ GMZ021-081500- E Gulf from 22N to 25N E of 87W including Straits of Florida- 1058 PM EDT Thu Sep 7 2017 ...HURRICANE WARNING... .OVERNIGHT...NE winds 10 to 15 kt. Seas 3 ft. .FRI...NE winds 10 to 15 kt. Seas 4 to 5 ft. Scattered showers and isolated thunderstorms. .FRI NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. N to NE winds 20 to 25 kt. Seas 5 to 6 ft. .SAT...TROPICAL STORM CONDITIONS EXPECTED. Straits of Florida, N to NE winds 35 to 40 kt, becoming N 50 to 55 kt in the afternoon. Elsewhere, N to NE winds 20 to 25 kt. Seas 7 to 9 ft. .SAT NIGHT...HURRICANE CONDITIONS POSSIBLE. Straits of Florida, N winds 75 to 85 kt. Seas 17 to 19 ft. Elsewhere, N winds 25 to 30 kt. Seas 10 to 12 ft. Scattered showers and isolated thunderstorms. VSBY 1 NM or less. .SUN...HURRICANE CONDITIONS POSSIBLE. .SUN NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. .MON...NW winds 15 to 20 kt. Seas 8 to 10 ft. .MON NIGHT...NW winds 15 to 20 kt. Seas 6 to 7 ft. .TUE...SW to W winds 5 to 10 kt. Seas 5 ft. $$ GMZ023-081500- SW Gulf S of 22N W of 94W- 1058 PM EDT Thu Sep 7 2017 ...HURRICANE WARNING... .OVERNIGHT...HURRICANE CONDITIONS. S of 21N W of 95W, W to NW winds 25 to 30 kt,increasing to 35 to 40 kt late. Elsewhere, W to NW winds 60 to 70 kt. Seas 11 to 12 ft S of 21N W of 95W, and 20 ft elsewhere. Scattered showers and isolated thunderstorms. VSBY 1 NM or less. .FRI...HURRICANE CONDITIONS EXPECTED. S of 21N W of 95W, W winds 55 to 75 kt. Seas 15 ft, building to 20 ft in the afternoon. Elsewhere, SW to W winds 65 to 75 kt, shifting to S in the afternoon. Seas 21 ft. Scattered showers and isolated thunderstorms. VSBY 1 NM or less. .FRI NIGHT...HURRICANE CONDITIONS EXPECTED. S of 21N W of 95W, SW to W winds 65 to 75 kt, shifting to S 60 to 70 kt late. Seas 20 to 22 ft. Elsewhere, SE winds 65 to 75 kt, becoming E 45 to 50 kt late. Seas 18 ft, subsiding to 12 ft late. Scattered showers and isolated thunderstorms. VSBY 1 NM or less. .SAT...TROPICAL STORM CONDITIONS POSSIBLE. S of 21N W of 95W, E to SE winds 45 to 50 kt, becoming N 5 to 10 kt in the afternoon. Seas 12 ft, subsiding to 4 ft in the afternoon. Elsewhere, NE winds 15 to 20 kt. Seas 8 ft, subsiding to 5 ft in the afternoon. Scattered showers and isolated thunderstorms. .SAT NIGHT...N winds 10 to 15 kt. Seas 4 ft. Scattered showers and isolated thunderstorms. .SUN...N winds 10 to 15 kt. Seas 5 ft. .SUN NIGHT...N winds 15 to 20 kt. Seas 5 ft. .MON...NW to N winds 15 to 20 kt. Seas 6 ft. .MON NIGHT...NW to N winds 15 to 20 kt. Seas 6 ft. .TUE...NW winds 10 to 15 kt. Seas 5 to 6 ft. $$ GMZ025-081500- E Bay of Campeche including Campeche Bank- 1058 PM EDT Thu Sep 7 2017 .OVERNIGHT...Within 60 nm of coast of Campeche, N winds 5 to 10 kt. Elsewhere, NW winds 25 to 30 kt, shifting to NE to E late. Seas 5 ft Within 60 nm of coast of Campeche, and 10 ft elsewhere. Scattered showers and isolated thunderstorms. .FRI...Within 60 nm of coast of Campeche, E winds 5 to 10 kt, shifting to SE to S 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 5 ft Within 60 nm of coast of Campeche, and 7 to 8 ft elsewhere. .SAT...NE winds 5 to 10 kt. Seas 5 to 6 ft. .SAT NIGHT...N to NE winds 10 to 15 kt. Seas 4 ft. Scattered showers and isolated thunderstorms. .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...N winds 10 to 15 kt. Seas 3 ft Within 60 nm of coast of Campeche, and 6 ft elsewhere. .MON NIGHT...NW to N winds 10 to 15 kt. Seas 6 ft. .TUE...NW winds 5 to 10 kt. Seas 5 ft. $$ Forecaster Lewitsky