000 FZNT24 KNHC 070251 OFFNT4 Offshore Waters Forecast for the Gulf of Mexico NWS National Hurricane Center Miami, FL 1051 PM EDT Wed Sep 6 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. GMZ001-071500- Synopsis for the Gulf of Mexico 1051 PM EDT Wed Sep 6 2017 .SYNOPSIS...Hurricane Katia near 21.7N 94.8W 989 mb at 11 PM EDT moving ESE at 2 kt. Maximum sustained winds 70 kt gusts 85 kt. Katia is forecast to move to near 21.5N 94.6W Thu morning, then to near 21.3N 94.8W Thu evening, then to near 21.1N 95.4W Fri morning, then near 20.6N 96.4W Fri evening, then will make landfall, weakening to a post-tropical cyclone near 19.0N 98.5W Sat evening, dissipating by Sun evening. Major Hurricane Irma is forecast to move between Cuba and the Bahamas Sat, then turn northward across the Florida peninsula, possibly 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. $$ GMZ011-071500- NW Gulf including Stetson Bank- 1051 PM EDT Wed Sep 6 2017 .OVERNIGHT...NE winds 15 to 20 kt. Seas 6 ft. .THU...NE winds 20 to 25 kt. Seas 7 ft. .THU NIGHT...NE winds 15 to 20 kt. Seas 6 to 7 ft. .FRI...NE to E winds 15 to 20 kt. Seas 7 ft. Scattered showers and isolated thunderstorms. .FRI NIGHT...NE to E winds 15 to 20 kt. Seas 7 ft. Scattered showers and isolated thunderstorms. .SAT...NE winds 15 to 20 kt. Seas 6 ft. .SAT NIGHT...NE winds 15 to 20 kt. Seas 5 to 6 ft. .SUN...NE winds 15 to 20 kt. Seas 5 to 6 ft. .SUN NIGHT...N to NE winds 15 to 20 kt. Seas 7 ft. .MON...N to NE winds 15 to 20 kt. Seas 7 ft. $$ GMZ013-071500- N Central Gulf including Flower Garden Banks Marine Sanctuary- 1051 PM EDT Wed Sep 6 2017 .OVERNIGHT...N to NE winds 15 to 20 kt. Seas 5 ft W of 90W, and 2 ft or less elsewhere. .THU...NE to E winds 15 to 20 kt. Seas 6 ft. Scattered showers and isolated thunderstorms. .THU NIGHT...NE to E winds 15 to 20 kt. Seas 6 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 6 to 7 ft. .SAT NIGHT...NE winds 20 to 25 kt. Seas 8 ft. .SUN...NE winds 20 to 25 kt. Seas 9 to 10 ft. .SUN NIGHT...N to NE winds 25 to 30 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. $$ GMZ015-071500- NE Gulf N of 25N E of 87W- 1051 PM EDT Wed Sep 6 2017 ...HURRICANE CONDITIONS POSSIBLE SAT NIGHT THROUGH SUN NIGHT... .OVERNIGHT...S of 27N, N to NE winds 5 to 10 kt. Elsewhere, NW winds 5 to 10 kt, becoming N 15 to 20 kt late. Seas 2 ft or less. .THU...S of 27N, NE to E winds 5 to 10 kt. Seas 2 ft or less. Elsewhere, NE winds 15 to 20 kt. Seas 3 to 4 ft. .THU NIGHT...NE winds 15 to 20 kt. Seas 3 to 4 ft. .FRI...NE winds 15 to 20 kt. Seas 4 ft. .FRI NIGHT...NE winds 20 to 25 kt. Seas 4 to 6 ft. .SAT...TROPICAL STORM CONDITIONS POSSIBLE. .SAT NIGHT...HURRICANE CONDITIONS POSSIBLE. .SUN...HURRICANE CONDITIONS POSSIBLE. .SUN NIGHT...HURRICANE CONDITIONS POSSIBLE. .MON...TROPICAL STORM CONDITIONS POSSIBLE. $$ GMZ017-071500- W Central Gulf from 22N to 26N W of 94W- 1051 PM EDT Wed Sep 6 2017 ...TROPICAL STORM WARNING... ...HURRICANE CONDITIONS POSSIBLE THU NIGHT AND FRI... .OVERNIGHT...TROPICAL STORM CONDITIONS EXPECTED. W of 96W, N to NE winds 25 to 30 kt. Seas 7 to 8 ft. Elsewhere, NE to E winds 35 to 40 kt. Seas 9 to 11 ft. Scattered showers and isolated thunderstorms. .THU...TROPICAL STORM CONDITIONS POSSIBLE. W of 96W, N to NE winds 20 to 25 kt. Seas 8 to 9 ft. Elsewhere, NE to E winds 30 to 35 kt. Seas 11 ft. Scattered showers and isolated thunderstorms. .THU NIGHT...HURRICANE 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 isolated thunderstorms. .FRI...HURRICANE CONDITIONS POSSIBLE. NE winds 25 to 30 kt. Seas 9 to 10 ft. Scattered showers and isolated thunderstorms. .FRI NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. NE winds 15 to 20 kt. Seas 7 to 9 ft. .SAT...NE winds 15 to 20 kt. Seas 6 ft. .SAT NIGHT...NE winds 15 to 20 kt. Seas 5 to 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 6 to 7 ft. .MON...N winds 15 to 20 kt. Seas 7 ft. $$ GMZ019-071500- Central Gulf from 22N to 26N between 87W and 94W- 1051 PM EDT Wed Sep 6 2017 ...TROPICAL STORM CONDITIONS POSSIBLE THROUGH FRI... .OVERNIGHT...TROPICAL STORM CONDITIONS POSSIBLE. NE to E winds 25 to 30 kt S of 24N, and NE 10 to 15 kt elsewhere. Seas 3 ft. Scattered showers and isolated thunderstorms. .THU...TROPICAL STORM CONDITIONS POSSIBLE. E winds 25 to 30 kt S of 24N, and E 15 to 20 kt elsewhere. Seas 4 to 5 ft. Scattered showers and isolated thunderstorms. .THU NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. NE to E winds 20 to 25 kt S of 24N, and NE to E 10 to 15 kt elsewhere. Seas 5 to 6 ft. .FRI...TROPICAL STORM CONDITIONS POSSIBLE. NE to E winds 15 to 20 kt. Seas 5 to 6 ft. .FRI NIGHT...NE winds 15 to 20 kt. Seas 5 ft. .SAT...NE winds 15 to 20 kt. Seas 6 ft. .SAT NIGHT...N to NE winds 20 to 25 kt. Seas 7 to 8 ft. .SUN...N to NE winds 20 to 25 kt. Seas 8 to 9 ft. .SUN NIGHT...N to NE winds 20 to 25 kt. Seas 9 ft. .MON...N winds 15 to 20 kt. Seas 9 ft. $$ GMZ021-071500- E Gulf from 22N to 25N E of 87W including Straits of Florida- 1051 PM EDT Wed Sep 6 2017 ...HURRICANE CONDITIONS POSSIBLE SAT THROUGH SUN... .OVERNIGHT...N to NE winds 5 to 10 kt. Seas 2 ft or less. Scattered showers and isolated thunderstorms. .THU...NE to E winds 5 to 10 kt. Seas 2 ft or less. .THU NIGHT...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. .FRI NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. N to NE winds 20 to 25 kt. Seas 4 to 5 ft. .SAT...HURRICANE CONDITIONS POSSIBLE. .SAT NIGHT...HURRICANE CONDITIONS POSSIBLE. .SUN...HURRICANE CONDITIONS POSSIBLE. .SUN NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. .MON...W to NW winds 20 to 25 kt. Seas 9 to 11 ft. $$ GMZ023-071500- SW Gulf S of 22N W of 94W- 1051 PM EDT Wed Sep 6 2017 ...HURRICANE WARNING... .OVERNIGHT...TROPICAL STORM CONDITIONS. S of 21N W of 95W, NW winds 25 to 30 kt. Seas 9 to 10 ft. Elsewhere, NW winds 45 to 55 kt. Seas 14 to 16 ft. Scattered showers and isolated thunderstorms. VSBY 1 NM or less. .THU...TROPICAL STORM CONDITIONS EXPECTED. S of 21N W of 95W, W to NW winds 25 to 30 kt. Seas 11 ft. Elsewhere, NW winds 50 to 60 kt. Seas 17 to 18 ft. Scattered showers and isolated thunderstorms. VSBY 1 NM or less. .THU NIGHT...TROPICAL STORM CONDITIONS EXPECTED. S of 21N W of 95W, NW winds 25 to 30 kt, becoming W to NW 35 to 40 kt late. Elsewhere, NW winds 55 to 65 kt. Seas 12 to 15 ft S of 21N W of 95W, and 19 to 21 ft elsewhere. Scattered showers and isolated thunderstorms. VSBY 1 NM or less. .FRI...HURRICANE CONDITIONS EXPECTED. S of 21N W of 95W, W to NW winds 45 to 50 kt,increasing to 60 to 65 kt in the afternoon. Elsewhere, W to NW winds 60 to 65 kt, shifting to SE to S in the afternoon. Seas 18 to 20 ft S of 21N W of 95W, and 20 to 21 ft elsewhere. Scattered showers and isolated thunderstorms. VSBY 1 NM or less. .FRI NIGHT...HURRICANE CONDITIONS POSSIBLE. S of 21N W of 95W, W winds 60 to 65 kt, shifting to S to SW 55 to 60 kt late. Seas 20 ft, subsiding to 15 ft late. Elsewhere, E to SE winds 45 to 50 kt, becoming E 25 to 30 kt late. Seas 16 ft, subsiding to 10 ft late. Scattered showers and isolated thunderstorms. .SAT...TROPICAL STORM CONDITIONS POSSIBLE. .SAT NIGHT...N winds 10 to 15 kt. Seas 4 ft. .SUN...N winds 10 to 15 kt. Seas 4 to 5 ft. .SUN NIGHT...N winds 15 to 20 kt. Seas 5 to 6 ft. .MON...NW to N winds 15 to 20 kt. Seas 7 ft. $$ GMZ025-071500- E Bay of Campeche including Campeche Bank- 1051 PM EDT Wed Sep 6 2017 ...TROPICAL STORM WARNING... ...HURRICANE CONDITIONS POSSIBLE THU NIGHT... .OVERNIGHT...TROPICAL STORM CONDITIONS POSSIBLE. Within 60 nm of coast of Campeche, N to NE winds 10 to 15 kt. Seas 2 ft or less. Elsewhere, N winds 25 to 30 kt. Seas 6 to 7 ft. Scattered showers and isolated thunderstorms. .THU...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 30 to 35 kt. Seas 4 ft Within 60 nm of coast of Campeche, and 7 to 8 ft elsewhere. Scattered showers and isolated thunderstorms. .THU NIGHT...HURRICANE CONDITIONS POSSIBLE. Within 60 nm of coast of Campeche, W to NW winds 5 to 10 kt, shifting to N to NE 10 to 15 kt late. Elsewhere, W winds 30 to 35 kt, shifting to NE 25 to 30 kt late. Seas 4 to 5 ft Within 60 nm of coast of Campeche, and 9 ft elsewhere. Scattered showers and isolated thunderstorms. .FRI...TROPICAL STORM CONDITIONS POSSIBLE. Within 60 nm of coast of Campeche, NE to 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 7 to 8 ft elsewhere. .FRI NIGHT...N to NE winds 10 to 15 kt. Seas 4 ft Within 60 nm of coast of Campeche, and 6 to 7 ft elsewhere. .SAT...N to NE winds 10 to 15 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 Lewitsky