000 FZNT24 KNHC 192050 OFFNT4 Offshore Waters Forecast for the Gulf of Mexico NWS National Hurricane Center Miami, FL 450 PM EDT Thu Aug 19 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. GMZ001-200900- Synopsis for the Gulf of Mexico 450 PM EDT Thu Aug 19 2021 .SYNOPSIS...Tropical Storm Grace near 20.6N 90.2W 999 mb at 5 PM EDT moving W at 13 kt. Maximum sustained winds 45 kt gusts 55 kt. Grace will move to 20.8N 92.5W Fri morning, strengthen to a hurricane near 20.7N 94.9W Fri afternoon, then inland to 20.4N 97.0W Sat morning. High pressure will build in the wake of Grace and prevail through early next week. $$ GMZ011-200900- NW Gulf including Stetson Bank- 450 PM EDT Thu Aug 19 2021 .TONIGHT...SE winds 10 to 15 kt. Seas 2 to 4 ft, building to 5 to 7 ft in E to SE swell late. .FRI...E to SE winds 15 to 20 kt. Seas 6 to 9 ft in E to SE swell. .FRI NIGHT...E to SE winds 15 to 20 kt. Seas 6 to 9 ft in E to SE swell. .SAT...E to SE winds 10 to 15 kt. Seas 6 to 9 ft in SE to S swell. .SAT NIGHT...SE winds 10 to 15 kt. Seas 5 to 7 ft in SE to S swell. .SUN...E to SE winds 10 kt. Seas 4 to 6 ft in SE to S swell. .SUN NIGHT...E to SE winds 10 to 15 kt. Seas 2 to 4 ft. .MON...E to SE winds 10 kt. Seas 2 to 4 ft. .MON NIGHT...E to SE winds 10 kt. Seas 3 ft or less. .TUE...E to SE winds 10 kt. Seas 3 ft or less. $$ GMZ013-200900- N Central Gulf including Flower Garden Banks Marine Sanctuary- 450 PM EDT Thu Aug 19 2021 .TONIGHT...E to SE winds 15 to 20 kt. Seas 6 to 8 ft in SE swell. .FRI...E to SE winds 15 to 20 kt. Seas 6 to 9 ft in SE swell. .FRI NIGHT...E to SE winds 15 to 20 kt W of 90W, and SE 10 kt elsewhere. Seas 6 to 8 ft in SE to S swell. .SAT...E to SE winds 10 to 15 kt. Seas 5 to 7 ft in SE to S swell. .SAT NIGHT...E to SE winds 10 to 15 kt. Seas 4 to 6 ft. .SUN...E winds 10 to 15 kt. Seas 3 to 5 ft. .SUN NIGHT...E to SE winds 10 kt. Seas 3 ft or less. .MON...E winds 10 kt. Seas 3 ft or less. .MON NIGHT...E to SE winds 10 kt. Seas 3 ft or less. .TUE...E to SE winds 10 kt. Seas 3 ft or less. $$ GMZ015-200900- NE Gulf N of 25N E of 87W- 450 PM EDT Thu Aug 19 2021 .TONIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft in SE to S swell. .FRI...E winds 10 to 15 kt. Seas 3 to 5 ft. .FRI NIGHT...NE winds 10 kt. Seas 3 ft or less. .SAT...NE to E winds 10 kt. Seas 3 ft or less. .SAT NIGHT...S of 27N, E winds 10 to 15 kt. Elsewhere, SE to S winds 10 kt in the evening, becoming variable less than 5 kt. Seas 3 ft or less. .SUN...E winds 10 to 15 kt. Seas 3 ft or less. .SUN NIGHT...E to SE winds 10 to 15 kt. Seas 3 ft or less. .MON...E to SE winds 10 kt. Seas 3 ft or less. .MON NIGHT...E to SE winds 10 to 15 kt. Seas 3 ft or less. .TUE...E to SE winds 10 to 15 kt. Seas 2 to 4 ft. $$ GMZ017-200900- W Central Gulf from 22N to 26N W of 94W- 450 PM EDT Thu Aug 19 2021 ...TROPICAL STORM WARNING... .TONIGHT...TROPICAL STORM CONDITIONS POSSIBLE. E winds 15 to 20 kt W of 96W, and NE to E 20 to 25 kt elsewhere. Seas 3 to 5 ft in E swell, building to 7 to 10 ft in E swell late. Scattered showers and isolated tstms. .FRI...TROPICAL STORM CONDITIONS EXPECTED. W of 96W, NE to E winds 15 to 20 kt. 25 to 30 kt in the afternoon. Elsewhere, E winds 35 to 40 kt. Seas 9 to 14 ft in NE swell. Scattered showers and isolated tstms. .FRI NIGHT...TROPICAL STORM CONDITIONS EXPECTED. E winds 30 to 40 kt. Seas 10 to 16 ft in E to SE swell. Scattered showers and isolated tstms. .SAT...E to SE winds 20 to 25 kt. Seas 9 to 14 ft in SE to S swell, subsiding to 7 to 10 ft in S swell in the afternoon. Scattered showers and isolated tstms. .SAT NIGHT...E to SE winds 15 to 20 kt. Seas 6 to 9 ft in E to SE swell. .SUN...E to SE winds 10 to 15 kt. Seas 5 to 7 ft in E to SE swell. .SUN NIGHT...E to SE winds 10 to 15 kt. Seas 3 to 5 ft. .MON...E winds 10 kt. Seas 2 to 4 ft. .MON NIGHT...E to SE winds 10 to 15 kt. Seas 3 ft or less. .TUE...E to SE winds 10 kt. Seas 3 ft or less. $$ GMZ019-200900- Central Gulf from 22N to 26N between 87W and 94W- 450 PM EDT Thu Aug 19 2021 ...TROPICAL STORM WARNING... .TONIGHT...TROPICAL STORM CONDITIONS EXPECTED. E winds 35 to 40 kt S of 24N, and E 25 to 30 kt elsewhere. Seas 10 to 15 ft in NE swell. Scattered showers and isolated tstms. .FRI...TROPICAL STORM CONDITIONS EXPECTED. S of 24N, E to SE winds 35 to 40 kt, diminishing to 25 to 30 kt in the afternoon. Elsewhere, E to SE winds 20 to 25 kt. Seas 9 to 13 ft in E swell. Scattered showers and isolated tstms. .FRI NIGHT...E to SE winds 25 to 30 kt. Seas 7 to 11 ft in S swell. .SAT...E to SE winds 15 to 20 kt. Seas 6 to 8 ft in S to SW swell. .SAT NIGHT...E winds 15 to 20 kt. Seas 5 to 7 ft. .SUN...E winds 10 to 15 kt. Seas 4 to 6 ft. .SUN NIGHT...E winds 10 to 15 kt. Seas 2 to 4 ft. .MON...E winds 10 to 15 kt. Seas 3 ft or less. .MON NIGHT...E winds 10 to 15 kt. Seas 3 ft or less. .TUE...E winds 10 to 15 kt. Seas 3 ft or less. $$ GMZ021-200900- E Gulf from 22N to 25N E of 87W including Straits of Florida- 450 PM EDT Thu Aug 19 2021 .TONIGHT...E winds 15 to 20 kt. Seas 6 to 9 ft in SE to S swell, 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 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. .SUN NIGHT...E winds 10 to 15 kt. Seas 3 ft or less. .MON...E winds 10 to 15 kt. Seas 3 ft or less. .MON NIGHT...E winds 15 to 20 kt. Seas 2 to 4 ft. .TUE...E winds 15 to 20 kt. Seas 3 to 5 ft. $$ GMZ023-200900- SW Gulf S of 22N W of 94W- 450 PM EDT Thu Aug 19 2021 ...HURRICANE WARNING... .TONIGHT...TROPICAL STORM CONDITIONS POSSIBLE. NW to N winds 15 to 20 kt S of 21N W of 95W, and N 25 to 30 kt elsewhere. Seas 3 ft or less, building to 6 to 9 ft in NE swell late. Scattered showers and isolated tstms. .FRI...TROPICAL STORM CONDITIONS EXPECTED. S of 21N W of 95W, W to NW winds 30 to 35 kt. Elsewhere, NW to N winds 55 to 60 kt, shifting to NE 60 to 70 kt in the afternoon. Seas 10 to 16 ft in NE swell, building to 14 to 22 ft in NE swell in the afternoon. Numerous showers and scattered tstms. .FRI NIGHT...HURRICANE CONDITIONS EXPECTED. S of 21N W of 95W, SW to W winds 60 to 70 kt, shifting to SE late. Elsewhere, E to SE winds 60 to 65 kt, diminishing to 45 to 50 kt late. Seas 15 to 23 ft in W to NW swell. Numerous showers and scattered tstms. .SAT...TROPICAL STORM CONDITIONS POSSIBLE. E to SE winds 20 to 25 kt. Seas 12 to 19 ft in NW swell, subsiding to 7 to 10 ft in NW to N swell in the afternoon. Scattered showers and isolated tstms. .SAT NIGHT...E to SE winds 15 to 20 kt. Seas 6 to 8 ft. Scattered tstms. .SUN...E winds 15 to 20 kt. Seas 4 to 6 ft. .SUN NIGHT...NE to E winds 10 to 15 kt. Seas 3 to 5 ft. .MON...NE winds 10 kt. Seas 2 to 4 ft. .MON NIGHT...NE winds 10 to 15 kt. Seas 3 ft or less. .TUE...NE winds 10 to 15 kt. Seas 3 ft or less. $$ GMZ025-200900- E Bay of Campeche including Campeche Bank- 450 PM EDT Thu Aug 19 2021 ...TROPICAL STORM WARNING... .TONIGHT...TROPICAL STORM CONDITIONS. Within 60 nm of coast of Campeche, SW winds 35 to 40 kt, shifting to SE to S 30 to 35 kt late. Elsewhere, N to NE winds 45 to 50 kt, shifting to SE to S 50 to 55 kt late. Seas 10 to 16 ft. Numerous showers and scattered tstms. .FRI...TROPICAL STORM CONDITIONS EXPECTED. Within 60 nm of coast of Campeche, SE winds 20 to 25 kt. Elsewhere, SE to S winds 55 to 60 kt, becoming SE 35 to 40 kt in the afternoon. Seas 12 to 18 ft. Scattered showers and isolated tstms. .FRI NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. E to SE winds 15 to 20 kt within 60 nm of coast of Campeche, and E to SE 25 to 30 kt elsewhere. Seas 8 to 12 ft, subsiding to 6 to 8 ft late. Scattered showers and isolated tstms. .SAT...E to SE winds 20 to 25 kt. Seas 6 to 8 ft. .SAT NIGHT...E winds 15 to 20 kt. Seas 5 to 7 ft. Scattered showers and isolated tstms. .SUN...E winds 10 to 15 kt. Seas 4 to 6 ft. .SUN NIGHT...NE to E winds 15 to 20 kt. Seas 2 to 4 ft. .MON...NE to E winds 10 to 15 kt. Seas 2 to 4 ft. .MON NIGHT...E winds 15 to 20 kt. Seas 3 ft or less. .TUE...NE to E winds 10 to 15 kt. Seas 3 ft or less. $$ Forecaster AL