000 FZNT24 KNHC 170912 OFFNT4 Offshore Waters Forecast for the Gulf of Mexico NWS National Hurricane Center Miami, FL 512 AM EDT Tue Aug 17 2021 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. GMZ001-172115- Synopsis for the Gulf of Mexico 512 AM EDT Tue Aug 17 2021 .SYNOPSIS...Recently upgraded Tropical Storm Grace near 18.2N 75.4W 1005 mb at 5 AM EDT moving W at 14 kt. Maximum sustained winds 35 kt gusts 45 kt. Grace will move to near 18.6N 77.6W this afternoon, to near 19.1N 80.7W late tonight, to near 19.7N 83.9W Wed afternoon with maximum sustained winds 50 kt gusts 60 kt, to near 20.4N 87.0W late Wed night with maximum sustained winds 60 kt gusts 75 kt, to inland the northern Yucatan Peninsula near 21.0N 90.0W Thu afternoon, to near 21.4n 92.7W late Thu night, to near 22.0N 97.2W late Fri night with maximum sustained winds 60 kt gusts 75 kt and to inland 22.3N 101.4W late Sat night. Fresh to strong east winds on the northern periphery of Grace are expected over the southeastern Gulf waters from Tue night through Wed night, shifting westward across the central Gulf through Sat night. $$ GMZ011-172115- NW Gulf including Stetson Bank- 512 AM EDT Tue Aug 17 2021 .TODAY...SE winds 10 kt. Seas 3 to 4 ft. Isolated showers and thunderstorms. .TONIGHT...SE winds 10 to 15 kt. Seas 3 to 4 ft or less. Isolated showers and thunderstorms. .WED...SE to S winds 15 kt. Seas 3 to 4 ft. Scattered showers and isolated thunderstorms. .WED NIGHT...SE winds 10 to 15 kt. Seas 3 to 5 ft. .THU...SE winds 10 to 15 kt. Seas 3 to 5 ft. .THU NIGHT...E to SE winds 15 to 20 kt. Seas 4 to 6 ft. .FRI...E to SE winds 15 to 20 kt. Seas 6 to 9 ft in E to SE swell. .FRI NIGHT...SE winds 15 to 20 kt. Seas 6 to 9 ft in SE swell. .SAT...SE winds 15 to 20 kt. Seas 6 to 8 ft. .SAT NIGHT...E to SE winds 15 kt. Seas 5 to 7 ft in SE swell. $$ GMZ013-172115- N Central Gulf including Flower Garden Banks Marine Sanctuary- 512 AM EDT Tue Aug 17 2021 .TODAY...W of 90W, variable winds less than 5 kt, becoming SE 10 kt in the afternoon. Elsewhere, SW to W winds 10 kt in the morning, becoming variable less than 5 kt. Seas 3 to 4 ft. .TONIGHT...SE to S winds 10 kt. Seas 3 to 4 ft. .WED...SE to S winds 10 to 15 kt. Seas 3 to 4 ft. Scattered showers and isolated thunderstorms. .WED NIGHT...SE winds 10 to 15 kt. Seas 3 to 5 ft. .THU...E to SE winds 15 to 20 kt. Seas 3 to 5 ft. .THU NIGHT...SE winds 15 to 20 kt. Seas 6 to 8 ft. .FRI...E to SE winds 15 to 20 kt. Seas 6 to 8 ft. .FRI NIGHT...SE winds 15 to 20 kt. Seas 5 to 7 ft. .SAT...E to SE winds 10 to 15 kt. Seas 4 to 6 ft. .SAT NIGHT...E to SE winds 10 to 15 kt. Seas 2 to 4 ft. $$ GMZ015-172115- NE Gulf N of 25N E of 87W- 512 AM EDT Tue Aug 17 2021 .TODAY...S to SW winds 10 kt. Seas 3 to 5 ft. .TONIGHT...SE winds 10 to 15 kt. Seas 3 to 4 ft. .WED...E to SE winds 10 to 15 kt. Seas 3 to 4 ft. .WED NIGHT...E to SE winds 15 to 20 kt S of 27N, and SE 10 to 15 kt elsewhere. Seas 4 to 6 ft. .THU...E to SE winds 10 to 15 kt. Seas 3 to 5 ft. .THU NIGHT...E winds 10 kt. Seas 3 to 5 ft. .FRI...E winds 10 to 15 kt. Seas 3 to 5 ft. .FRI NIGHT...E winds 10 kt. Seas 2 to 3 ft. .SAT...E winds 10 kt. Seas 2 to 3 ft. .SAT NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. $$ GMZ017-172115- W Central Gulf from 22N to 26N W of 94W- 512 AM EDT Tue Aug 17 2021 .TODAY...SE winds 10 kt. Seas 2 to 3 ft. .TONIGHT...SE winds 10 to 15 kt. Seas 3 to 4 ft. .WED...SE to S winds 10 to 15 kt. Seas 3 to 5 ft. .WED NIGHT...SE winds 15 kt. Seas 3 to 5 ft. .THU...E to SE winds 10 to 15 kt. Seas 3 to 5 ft. .THU NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. .FRI...TROPICAL STORM CONDITIONS POSSIBLE. .FRI NIGHT...HURRICANE CONDITIONS POSSIBLE. .SAT...TROPICAL STORM CONDITIONS POSSIBLE. $$ GMZ019-172115- Central Gulf from 22N to 26N between 87W and 94W- 512 AM EDT Tue Aug 17 2021 ...TROPICAL STORM WARNING... .TODAY...SE to S winds 10 to 15 kt. Seas 3 ft or less. .TONIGHT...E to SE winds 15 to 20 kt. Seas 3 ft or less. .WED...E to SE winds 10 to 15 kt. Seas 2 to 4 ft. .WED NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. S of 24N, E winds 15 to 20 kt, increasing to 30 to 35 kt late. Seas 4 to 6 ft, building to 8 to 12 ft late SE part. Elsewhere, E winds 15 to 20 kt. Seas 4 to 6 ft. Scattered showers and thunderstorms SE part. .THU...TROPICAL STORM CONDITIONS POSSIBLE. E winds 35 to 45 kt S of 24N, and E 20 to 25 kt elsewhere. S of 24N, seas 9 to 13 ft. Elsewhere, seas 5 to 7 ft, building to 7 to 11 ft in the afternoon. .THU NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. .FRI...TROPICAL STORM CONDITIONS POSSIBLE. .FRI NIGHT...E to SE winds 20 to 25 kt. Seas 7 to 10 ft. .SAT...E to SE winds 20 to 25 kt. Seas 6 to 9 ft. $$ GMZ021-172115- E Gulf from 22N to 25N E of 87W including Straits of Florida- 512 AM EDT Tue Aug 17 2021 ...TROPICAL STORM WARNING... .TODAY...E winds 10 to 15 kt. Seas 3 ft or less. Scattered showers and isolated thunderstorms. .TONIGHT...E winds 15 to 20 kt. Seas 3 ft or less, building to 3 to 5 ft late. Scattered showers and isolated thunderstorms. .WED...E winds 15 to 20 kt. Seas 4 to 6 ft. Scattered showers and isolated thunderstorms. .WED NIGHT...TROPICAL STORM CONDITIONS EXPECTED. Straits of Florida, E to SE winds 30 to 35 kt. Elsewhere, E winds 20 to 25 kt, becoming E to SE 30 to 35 kt late. Seas 5 to 7 ft, building to 7 to 11 ft late. Scattered showers and isolated thunderstorms. .THU...TROPICAL STORM CONDITIONS POSSIBLE. E to SE winds 30 to 35 kt, diminishing to 20 to 25 kt in the afternoon. Seas 7 to 11 ft. .THU NIGHT...E winds 15 to 20 kt. Seas 6 to 9 ft, subsiding to 4 to 6 ft late. .FRI...E winds 10 to 15 kt. Seas 3 to 5 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft. .SAT...E winds 10 to 15 kt. Seas 3 to 5 ft. $$ GMZ023-172115- SW Gulf S of 22N W of 94W- 512 AM EDT Tue Aug 17 2021 .TODAY...Variable winds less than 5 kt S of 21N W of 95W, and SE 10 kt elsewhere. Seas 2 to 4 ft. .TONIGHT...E to SE winds 10 to 15 kt. Seas to 4 ft. .WED...E to SE winds 10 to 15 kt. Seas 3 to 4 ft. .WED NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .THU...NE to E winds 10 kt. Seas 3 to 4 ft. .THU NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. .FRI...TROPICAL STORM CONDITIONS POSSIBLE. .FRI NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. .SAT...TROPICAL STORM CONDITIONS POSSIBLE. $$ GMZ025-172115- E Bay of Campeche including Campeche Bank- 512 AM EDT Tue Aug 17 2021 ...TROPICAL STORM WARNING... .TODAY...SE winds 10 to 15 kt. Seas 3 to 5 ft. .TONIGHT...NE to E winds 15 to 20 kt. Seas 3 to 5 ft. .WED...E to SE winds 10 to 15 kt. Seas 3 to 5 ft. .WED NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. Within 60 nm of coast of Campeche, NE winds 15 to 20 kt. Elsewhere, NE winds 15 to 20 kt, becoming NE to E 30 to 35 kt late. Seas 3 to 5 ft. .THU...TROPICAL STORM CONDITIONS POSSIBLE. Within 60 nm of coast of Campeche, NE to E winds 10 kt, becoming NW 20 to 25 kt in the afternoon. Elsewhere, NE winds 40 to 50 kt. Seas 2 to 4 ft within 60 nm of coast of Campeche, and 7 to 11 ft elsewhere. .THU NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. .FRI...TROPICAL STORM CONDITIONS POSSIBLE. .FRI NIGHT...E to SE winds 15 to 20 kt within 60 nm of coast of Campeche, and E to SE 25 to 30 kt elsewhere. Within 60 nm of coast of Campeche, seas 4 to 6 ft. Elsewhere, seas 7 to 11 ft, subsiding to 6 to 8 ft late. $$ Forecaster Aguirre