000 FZNT24 KNHC 172059 OFFNT4 Offshore Waters Forecast for the Gulf of Mexico NWS National Hurricane Center Miami, FL 459 PM 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. GMZ001-180900- Synopsis for the Gulf of Mexico 459 PM EDT Tue Aug 17 2021 .SYNOPSIS...Tropical Storm Grace near 18.4N 77.9W 1003 mb at 5 PM EDT moving W at 13 kt. Maximum sustained winds 45 kt gusts 55 kt. Grace will move to 18.9N 80.3W Wed morning, strengthen to a hurricane near 19.4N 83.4W Wed afternoon, 20.0N 86.7W Thu morning, move inland and weaken to a tropical storm near 20.5N 89.7W Thu afternoon, strengthen to a hurricane near 20.9N 92.2W Fri morning, and 21.2N 94.8W Fri afternoon. Grace will weaken to a tropical storm while moving inland near 21.0N 99.5W Sat afternoon. Grace is forecast to move near or over the Cayman Islands late tonight and early Wednesday, and then approach the Yucatan peninsula of Mexico late Wednesday or early Thursday. Winds and seas will begin to increase across the SE waters ahead of Grace on Wed. $$ GMZ011-180900- NW Gulf including Stetson Bank- 459 PM EDT Tue Aug 17 2021 .TONIGHT...SE winds 10 to 15 kt. Seas 2 to 4 ft. .WED...SE to S winds 10 to 15 kt. Seas 2 to 4 ft. Scattered showers and isolated tstms. .WED NIGHT...SE winds 15 to 20 kt. Seas 2 to 4 ft. .THU...SE winds 10 to 15 kt. Seas 2 to 4 ft. .THU NIGHT...E to SE winds 15 to 20 kt. Seas 3 to 5 ft. .FRI...E to SE winds 15 to 20 kt. Seas 6 to 9 ft. .FRI NIGHT...SE winds 15 to 20 kt. Seas 6 to 9 ft. .SAT...SE winds 15 to 20 kt. Seas 6 to 8 ft. .SAT NIGHT...E to SE winds 10 to 15 kt. Seas 6 to 8 ft. .SUN...E to SE winds 10 to 15 kt. Seas 5 to 7 ft. $$ GMZ013-180900- N Central Gulf including Flower Garden Banks Marine Sanctuary- 459 PM EDT Tue Aug 17 2021 .TONIGHT...SE winds 10 to 15 kt. Seas 3 ft or less. .WED...SE to S winds 10 to 15 kt. Seas 3 ft or less. Scattered showers and isolated tstms. .WED NIGHT...SE winds 15 to 20 kt. Seas 2 to 4 ft. .THU...E to SE winds 15 to 20 kt. Seas 4 to 6 ft. .THU NIGHT...SE winds 15 to 20 kt. Seas 5 to 7 ft. .FRI...E to SE winds 15 to 20 kt. Seas 7 to 10 ft W of 90W, and 4 to 6 ft elsewhere. .FRI NIGHT...SE winds 15 to 20 kt. Seas 6 to 9 ft W of 90W, and 3 to 5 ft elsewhere. .SAT...E to SE winds 15 to 20 kt. Seas 6 to 8 ft W of 90W, and 2 to 4 ft elsewhere. .SAT NIGHT...E to SE winds 10 to 15 kt. Seas 5 to 7 ft W of 90W, and 3 ft or less elsewhere. .SUN...E winds 10 to 15 kt. Seas 4 to 6 ft W of 90W, and 3 ft or less elsewhere. $$ GMZ015-180900- NE Gulf N of 25N E of 87W- 459 PM EDT Tue Aug 17 2021 .TONIGHT...SE winds 10 to 15 kt. Seas 3 ft or less. .WED...E to SE winds 15 to 20 kt. Seas 2 to 4 ft. .WED NIGHT...E to SE winds 15 to 20 kt. Seas 4 to 6 ft S of 27N, and 3 ft or less elsewhere. .THU...E to SE winds 15 to 20 kt. Seas 5 to 7 ft S of 27N, and 2 to 4 ft elsewhere. .THU NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft S of 27N, and 3 to 5 ft elsewhere. .FRI...E winds 10 to 15 kt. Seas 3 to 5 ft. .FRI NIGHT...S of 27N, E winds 10 to 15 kt. Elsewhere, NE to E winds 10 kt in the evening, becoming variable less than 5 kt. Seas 2 to 4 ft. .SAT...E winds 10 to 15 kt. Seas 3 ft or less. .SAT NIGHT...E winds 10 to 15 kt. Seas 3 ft or less. .SUN...E winds 10 to 15 kt. Seas 3 ft or less. $$ GMZ017-180900- W Central Gulf from 22N to 26N W of 94W- 459 PM EDT Tue Aug 17 2021 .TONIGHT...SE winds 10 to 15 kt. Seas 2 to 4 ft. .WED...SE to S winds 10 to 15 kt. Seas 2 to 4 ft. .WED NIGHT...SE winds 15 to 20 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. W of 96W, E winds 10 to 15 kt. Seas 3 to 5 ft. Elsewhere, NE to E winds 15 to 20 kt, increasing to 25 to 30 kt late. Seas 3 to 5 ft, building to 6 to 8 ft late. .FRI...HURRICANE CONDITIONS POSSIBLE. .FRI NIGHT...HURRICANE CONDITIONS POSSIBLE. .SAT...TROPICAL STORM CONDITIONS POSSIBLE. .SAT NIGHT...E to SE winds 15 to 20 kt. Seas 7 to 10 ft. .SUN...E to SE winds 15 to 20 kt. Seas 6 to 8 ft. $$ GMZ019-180900- Central Gulf from 22N to 26N between 87W and 94W- 459 PM EDT Tue Aug 17 2021 .TONIGHT...E winds 15 to 20 kt S of 24N, and SE 10 to 15 kt elsewhere. Seas 2 to 4 ft. .WED...E to SE winds 15 to 20 kt. Seas 2 to 4 ft. .WED NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. S of 24N, E winds 15 to 20 kt, increasing to 25 to 30 kt late. Elsewhere, E winds 15 to 20 kt. Seas 3 to 5 ft. .THU...TROPICAL STORM CONDITIONS POSSIBLE. E winds 25 to 30 kt. Seas 9 to 13 ft S of 24N, and 6 to 8 ft elsewhere. Scattered showers and isolated tstms. .THU NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. E winds 30 to 40 kt S of 24N, and E to SE 25 to 30 kt elsewhere. Seas 9 to 14 ft. .FRI...HURRICANE CONDITIONS POSSIBLE. .FRI NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. .SAT...E to SE winds 15 to 20 kt. Seas 7 to 10 ft. .SAT NIGHT...E winds 15 to 20 kt. Seas 6 to 8 ft. .SUN...E winds 10 to 15 kt. Seas 5 to 7 ft. $$ GMZ021-180900- E Gulf from 22N to 25N E of 87W including Straits of Florida- 459 PM EDT Tue Aug 17 2021 .TONIGHT...E winds 15 to 20 kt. Seas 3 ft or less, building to 3 to 5 ft late. .WED...TROPICAL STORM CONDITIONS POSSIBLE. E winds 15 to 20 kt. Seas 4 to 6 ft. .WED NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. E to SE winds 25 to 30 kt. Seas 5 to 7 ft, building to 7 to 11 ft late. .THU...TROPICAL STORM CONDITIONS POSSIBLE. E to SE winds 25 to 30 kt. Straits of Florida, seas 9 to 13 ft, subsiding to 7 to 10 ft in the afternoon. Elsewhere, seas 9 to 14 ft. .THU NIGHT...E winds 15 to 20 kt. Straits of Florida, seas 5 to 7 ft. Elsewhere, seas 7 to 11 ft, subsiding to 6 to 8 ft late. .FRI...E winds 10 to 15 kt. Seas 3 to 5 ft. .FRI NIGHT...E winds 10 to 15 kt. Seas 2 to 4 ft. .SAT...E winds 10 to 15 kt. Seas 2 to 4 ft. .SAT NIGHT...E winds 10 to 15 kt. Seas 2 to 4 ft. .SUN...E winds 10 to 15 kt. Seas 2 to 4 ft. $$ GMZ023-180900- SW Gulf S of 22N W of 94W- 459 PM EDT Tue Aug 17 2021 .TONIGHT...E to SE winds 10 to 15 kt. Seas 3 ft or less. .WED...E to SE winds 10 to 15 kt. Seas 3 ft or less. .WED NIGHT...E winds 10 to 15 kt. Seas 2 to 4 ft. .THU...S of 21N W of 95W, E to SE winds 10 kt in the morning, becoming variable less than 5 kt. Elsewhere, NE winds 10 to 15 kt. Seas 2 to 4 ft. .THU NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. S of 21N W of 95W, N to NE winds 10 kt, shifting to NW late. Elsewhere, N to NE winds 15 to 20 kt, becoming NW to N 25 to 30 kt late. Seas 2 to 4 ft. .FRI...HURRICANE CONDITIONS POSSIBLE. .FRI NIGHT...HURRICANE CONDITIONS POSSIBLE. .SAT...TROPICAL STORM CONDITIONS POSSIBLE. .SAT NIGHT...E to SE winds 15 to 20 kt. Seas 6 to 9 ft. .SUN...E to SE winds 15 to 20 kt. Seas 6 to 8 ft. $$ GMZ025-180900- E Bay of Campeche including Campeche Bank- 459 PM EDT Tue Aug 17 2021 ...TROPICAL STORM WARNING... .TONIGHT...NE to E winds 15 to 20 kt. Seas 2 to 4 ft. .WED...E to SE winds 15 to 20 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 to E winds 15 to 20 kt, increasing to 25 to 30 kt late. Seas 3 to 5 ft. .THU...TROPICAL STORM CONDITIONS EXPECTED. Within 60 nm of coast of Campeche, NE to E winds 10 kt, becoming NW to N 25 to 30 kt in the afternoon. Elsewhere, NE winds 30 to 40 kt. Seas 2 to 4 ft within 60 nm of coast of Campeche, and 5 to 7 ft elsewhere. Scattered showers and isolated tstms. .THU NIGHT...HURRICANE CONDITIONS POSSIBLE. Within 60 nm of coast of Campeche, SW to W winds 55 to 60 kt, becoming SE to S 35 to 40 kt late. Seas 5 to 7 ft. Elsewhere, N to NE winds 55 to 60 kt, shifting to S 60 to 65 kt late. Seas 7 to 10 ft, building to 9 to 13 ft late. .FRI...HURRICANE CONDITIONS POSSIBLE. .FRI NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. .SAT...E to SE winds 15 to 20 kt. Seas 4 to 6 ft within 60 nm of coast of Campeche, and 7 to 10 ft elsewhere. .SAT NIGHT...E winds 15 to 20 kt. Seas 3 to 5 ft within 60 nm of coast of Campeche, and 6 to 8 ft elsewhere. .SUN...E winds 15 to 20 kt. Seas 2 to 4 ft within 60 nm of coast of Campeche, and 5 to 7 ft elsewhere. $$ Forecaster GR