000 FZNT24 KNHC 182055 OFFNT4 Offshore Waters Forecast for the Gulf of Mexico NWS National Hurricane Center Miami, FL 455 PM EDT Wed Aug 18 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. GMZ001-190900- Synopsis for the Gulf of Mexico 455 PM EDT Wed Aug 18 2021 .SYNOPSIS...Hurricane Grace near 19.7N 83.7W 992 mb at 5 PM EDT moving WNW at 14 kt. Maximum sustained winds 70 kt gusts 85 kt. Grace will move to 20.2N 86.1W Thu morning, move inland and weaken to a tropical storm near 20.7N 89.3W Thu afternoon, 20.9N 92.2W Fri morning, strengthen to a hurricane near 20.8N 94.6W Fri afternoon, inland to 20.4N 97.3W Sat morning, and move inland and weaken to a tropical depression near 20.0N 99.9W Sat afternoon. Winds and seas will begin to increase across the southeastern Gulf ahead of Grace tonight. These conditions will shift to west of 90W Thu through late Fri night. $$ GMZ011-190900- NW Gulf including Stetson Bank- 455 PM EDT Wed Aug 18 2021 .TONIGHT...SE to S winds 10 to 15 kt. Seas 2 to 4 ft. .THU...SE winds 10 to 15 kt. Seas 2 to 4 ft. .THU NIGHT...E to SE winds 15 to 20 kt. Seas 2 to 4 ft, building to 5 to 7 ft late. .FRI...SE winds 15 to 20 kt. Seas 6 to 9 ft in NE swell. .FRI NIGHT...SE winds 15 to 20 kt. Seas 6 to 9 ft in E to SE swell. .SAT...E to SE winds 15 to 20 kt. Seas 6 to 9 ft in SE to S swell. .SAT NIGHT...E to SE winds 10 to 15 kt. Seas 6 to 8 ft in SE to S swell. .SUN...E to SE winds 10 to 15 kt. Seas 5 to 7 ft in SE to S swell. .SUN NIGHT...E to SE winds 10 to 15 kt. Seas 3 to 5 ft. .MON...E winds 10 kt. Seas 2 to 4 ft. $$ GMZ013-190900- N Central Gulf including Flower Garden Banks Marine Sanctuary- 455 PM EDT Wed Aug 18 2021 .TONIGHT...SE winds 15 to 20 kt. Seas 2 to 4 ft. .THU...SE winds 15 to 20 kt. Seas 3 to 5 ft. .THU NIGHT...SE winds 20 to 25 kt. Seas 6 to 8 ft. .FRI...E to SE winds 15 to 20 kt. Seas 7 to 10 ft in SE swell. .FRI NIGHT...E to SE winds 15 to 20 kt. Seas 6 to 9 ft in SE to S swell. .SAT...E winds 15 to 20 kt. Seas 5 to 7 ft. .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 2 to 4 ft. .MON...NE winds 10 kt. Seas 3 ft or less. $$ GMZ015-190900- NE Gulf N of 25N E of 87W- 455 PM EDT Wed Aug 18 2021 .TONIGHT...E to SE winds 15 to 20 kt. Seas 3 to 5 ft. .THU...E to SE winds 15 to 20 kt. Seas 4 to 6 ft. .THU NIGHT...NE to E winds 10 kt. Seas 4 to 6 ft in S swell. .FRI...E winds 10 to 15 kt S of 27N, and variable less than 5 kt elsewhere. Seas 3 to 5 ft. .FRI NIGHT...N to NE winds 10 kt. Seas 3 ft or less. .SAT...NE to E winds 10 kt. Seas 3 ft or less. .SAT NIGHT...E winds 10 kt. Seas 3 ft or less. .SUN...SE winds 10 to 15 kt. Seas 3 ft or less. .SUN NIGHT...N winds 10 kt, shifting to SE late. Seas 3 ft or less. .MON...E to SE winds 10 kt in the morning, becoming variable less than 5 kt. Seas 3 ft or less. $$ GMZ017-190900- W Central Gulf from 22N to 26N W of 94W- 455 PM EDT Wed Aug 18 2021 ...TROPICAL STORM WARNING... .TONIGHT...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. E winds 15 to 20 kt. Seas 3 to 5 ft, building to 6 to 9 ft in E swell late. Scattered showers and isolated tstms. .FRI...TROPICAL STORM CONDITIONS POSSIBLE. NE to E winds 15 to 20 kt W of 96W, and E 25 to 30 kt elsewhere. Seas 9 to 13 ft in NE swell. Scattered showers and isolated tstms. .FRI NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. E winds 35 to 40 kt, becoming E to SE 25 to 30 kt late. Seas 12 to 19 ft in E swell. Scattered showers and isolated tstms. .SAT...W of 96W, E to SE winds 25 to 30 kt, diminishing to 15 to 20 kt in the afternoon. Elsewhere, E to SE winds 15 to 20 kt. Seas 13 to 20 ft in SE to S swell, subsiding to 10 to 15 ft in SE to S swell in the afternoon. .SAT NIGHT...E to SE winds 15 to 20 kt. Seas 7 to 11 ft in E swell. .SUN...E to SE winds 20 to 25 kt, becoming SE 10 to 15 kt in the afternoon. Seas 5 to 7 ft in E swell. .SUN NIGHT...E to SE winds 10 to 15 kt. Seas 4 to 6 ft. .MON...E winds 10 kt. Seas 3 to 5 ft. $$ GMZ019-190900- Central Gulf from 22N to 26N between 87W and 94W- 455 PM EDT Wed Aug 18 2021 ...TROPICAL STORM WARNING... .TONIGHT...TROPICAL STORM CONDITIONS POSSIBLE. S of 24N, E winds 15 to 20 kt, increasing to 25 to 30 kt late. Elsewhere, E to SE winds 15 to 20 kt. Seas 3 to 5 ft. .THU...TROPICAL STORM CONDITIONS POSSIBLE. E winds 30 to 35 kt S of 24N, and E to SE 25 to 30 kt elsewhere. Seas 9 to 13 ft in NE to E swell. Scattered showers and isolated tstms. .THU NIGHT...TROPICAL STORM CONDITIONS EXPECTED. E to SE winds 30 to 40 kt S of 24N, and E to SE 20 to 25 kt elsewhere. Seas 9 to 14 ft in NE swell. Scattered showers and isolated tstms. .FRI...TROPICAL STORM CONDITIONS EXPECTED. S of 24N, E to SE winds 35 to 40 kt, diminishing to 25 to 30 kt in the afternoon. Elsewhere, E to SE winds 20 to 25 kt. Seas 9 to 14 ft in E swell. .FRI NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. S of 24N, E to SE winds 30 to 35 kt, diminishing to 20 to 25 kt late. Elsewhere, E to SE winds 20 to 25 kt. Seas 8 to 12 ft in S swell. .SAT...E to SE winds 15 to 20 kt. Seas 6 to 9 ft in S to SW swell. .SAT NIGHT...E winds 20 to 25 kt. Seas 5 to 7 ft. .SUN...E winds 15 to 20 kt. Seas 5 to 7 ft. .SUN NIGHT...E winds 15 to 20 kt. Seas 3 to 5 ft. .MON...E winds 10 to 15 kt. Seas 2 to 4 ft. $$ GMZ021-190900- E Gulf from 22N to 25N E of 87W including Straits of Florida- 455 PM EDT Wed Aug 18 2021 ...TROPICAL STORM WARNING... .TONIGHT...TROPICAL STORM CONDITIONS POSSIBLE. E to SE winds 25 to 30 kt. Seas 4 to 6 ft, building to 9 to 13 ft in E swell late. .THU...TROPICAL STORM CONDITIONS EXPECTED. E to SE winds 30 to 35 kt, diminishing to 20 to 25 kt in the afternoon. Seas 12 to 19 ft in SE to S swell. Scattered showers and isolated tstms. .THU NIGHT...E winds 15 to 20 kt. Seas 7 to 11 ft in SE to S swell, subsiding to 5 to 7 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 15 to 20 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. $$ GMZ023-190900- SW Gulf S of 22N W of 94W- 455 PM EDT Wed Aug 18 2021 ...HURRICANE WARNING... .TONIGHT...E winds 10 to 15 kt. Seas 2 to 4 ft. .THU...E winds 10 kt, shifting to N to NE in the afternoon. Seas 2 to 4 ft. .THU NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. N winds 10 kt S of 21N W of 95W, and N to NE 15 to 20 kt elsewhere. Seas 3 to 5 ft. Scattered showers and isolated tstms. .FRI...TROPICAL STORM CONDITIONS EXPECTED. S of 21N W of 95W, NW winds 10 to 15 kt, increasing to 20 to 25 kt in the afternoon. Elsewhere, NW to N winds 35 to 40 kt, increasing to 60 to 70 kt in the afternoon. Seas 7 to 10 ft in NE swell, building to 14 to 21 ft in NE swell in the afternoon. Numerous showers and scattered tstms. .FRI NIGHT...HURRICANE CONDITIONS POSSIBLE. S of 21N W of 95W, W winds 60 to 70 kt, becoming SE to S 45 to 50 kt late. Elsewhere, E to SE winds 60 to 70 kt, becoming SE 35 to 40 kt late. Seas 15 to 23 ft in N swell. Numerous showers and scattered tstms. .SAT...E to SE winds 25 to 30 kt. Seas 15 to 23 ft in N swell, subsiding to 10 to 15 ft in NE swell in the afternoon. .SAT NIGHT...E to SE winds 15 to 20 kt. Seas 8 to 12 ft in NE swell, subsiding to 6 to 8 ft in NE to E swell late. .SUN...SE winds 15 to 20 kt. Seas 5 to 7 ft. .SUN NIGHT...NE winds 10 to 15 kt. Seas 4 to 6 ft. .MON...N to NE winds 10 to 15 kt. Seas 3 to 5 ft. $$ GMZ025-190900- E Bay of Campeche including Campeche Bank- 455 PM EDT Wed Aug 18 2021 ...HURRICANE WARNING... .TONIGHT...TROPICAL STORM CONDITIONS POSSIBLE. Within 60 nm of coast of Campeche, NE winds 20 to 25 kt. Elsewhere, NE winds 15 to 20 kt, becoming NE to E 25 to 30 kt late. Seas 3 to 5 ft. Scattered showers and isolated tstms. .THU...TROPICAL STORM CONDITIONS EXPECTED. Within 60 nm of coast of Campeche, NE to E winds 10 to 15 kt, becoming NW to N 20 to 25 kt in the afternoon. Elsewhere, NE winds 35 to 45 kt. Seas 4 to 6 ft, building to 6 to 9 ft in the afternoon. Scattered showers and isolated tstms. .THU NIGHT...TROPICAL STORM CONDITIONS EXPECTED. Within 60 nm of coast of Campeche, W to NW winds 45 to 50 kt, shifting to S 35 to 40 kt late. Elsewhere, N to NE winds 50 to 60 kt. Seas 9 to 13 ft in N to NE swell. Numerous showers and scattered tstms. .FRI...TROPICAL STORM CONDITIONS EXPECTED. Within 60 nm of coast of Campeche, SE to S winds 25 to 30 kt, diminishing to 15 to 20 kt in the afternoon. Elsewhere, SE to S winds 60 to 65 kt, diminishing to 45 to 50 kt in the afternoon. Seas 14 to 22 ft in NW swell. Numerous showers and scattered tstms. .FRI NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. Within 60 nm of coast of Campeche, E to SE winds 20 to 25 kt. Elsewhere, SE winds 30 to 35 kt, becoming E to SE 20 to 25 kt late. Seas 9 to 14 ft in W swell. .SAT...E to SE winds 20 to 25 kt. Seas 5 to 7 ft. .SAT NIGHT...E winds 20 to 25 kt. Seas 5 to 7 ft. .SUN...E winds 15 to 20 kt. Seas 4 to 6 ft. .SUN NIGHT...NE to E winds 20 to 25 kt. Seas 4 to 6 ft. .MON...NE to E winds 10 to 15 kt. Seas 3 to 5 ft. $$ Forecaster AL