000 FZNT24 KNHC 201430 OFFNT4 Offshore Waters Forecast for the Gulf of Mexico NWS National Hurricane Center Miami, FL 930 AM EST Thu Dec 20 2018 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. GMZ001-210230- Synopsis for the Gulf of Mexico 930 AM EST Thu Dec 20 2018 .SYNOPSIS...A strong cold front extends from a 1002 mb low pressure system centered over southeastern Louisiana to 26N89W to 22N93W and to 18N95W. Numerous showers and thunderstorms are along and ahead of the front. The low pressure system will strengthen as it lifts north-northeast through Fri night, with the cold front quickly moving east of the Gulf tonight. Strong to gale force southerly winds will develop ahead of the front today, followed by westerly gale force winds behind the front, with very large seas expected to build over the east-central waters tonight and Fri. Scattered showers are expected behind the front. High pres will shift eastward across the central gulf on Sat, then move across the Florida Panhandle on Sun. $$ GMZ011-210230- NW Gulf including Stetson Bank- 930 AM EST Thu Dec 20 2018 ...GALE WARNING... .TODAY...NW winds 20 to 30 kt. Seas 2 to 4 ft, building to 9 to 13 ft. Scattered showers and thunderstorms E of 95W. .TONIGHT...NW winds 30 to 35 kt. Seas 10 to 16 ft in NW to N swell. Scattered showers and isolated thunderstorms far SE part. .FRI...NW to N winds 20 to 30 kt, becoming NW 15 to 20 kt late in the afternoon. Seas 9 to 13 ft in NW to N swell, subsiding to 6 to 9 ft in NW to N swell late in the afternoon. .FRI NIGHT...W to NW winds 10 to 15 kt, shifting to S to SW late. Seas 4 to 6 ft. .SAT...S winds 15 to 20 kt. Seas 3 to 5 ft. .SAT NIGHT...S winds 15 to 20 kt. Seas 2 to 4 ft. .SUN...S winds 10 to 15 kt. Seas 2 to 4 ft. .SUN NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. .MON...SE winds 5 to 10 kt. Seas 2 to 3 ft. .MON NIGHT...SE winds 10 to 15 kt. Seas 3 to 4 ft. $$ GMZ013-210230- N Central Gulf including Flower Garden Banks Marine Sanctuary- 930 AM EST Thu Dec 20 2018 ...GALE WARNING... .TODAY...W to NW winds 25 to 35 kt. Seas 5 to 7 ft, building to 8 to 12 ft. Areas of rain and scattered showers E of 90W, and scattered showers and thunderstorms W of 90W. .TONIGHT...NW winds 30 to 35 kt. Seas 12 to 18 ft. Scattered showers. .FRI...NW winds 30 to 35 kt W of 90W, and W to NW 25 to 35 kt elsewhere. Seas 14 to 21 ft. Scattered showers. .FRI NIGHT...W of 90W, NW winds 20 to 25 kt, becoming W 10 to 15 kt late. Elsewhere, NW winds 20 to 30 kt, diminishing to 15 to 20 kt late. Seas 10 to 16 ft in W to NW swell, subsiding to 7 to 11 ft in W to NW swell early in the morning. Scattered showers. .SAT...SW winds 10 to 15 kt, shifting to SE to S in the afternoon. Seas 3 to 5 ft. .SAT NIGHT...SE to S winds 10 to 15 kt. Seas 3 to 4 ft. .SUN...S winds 10 to 15 kt. Seas 3 to 4 ft. .SUN NIGHT...SE winds 5 to 10 kt. Seas 2 to 4 ft. .MON...SE winds 5 to 10 kt. Seas 2 to 3 ft. .MON NIGHT...E to SE winds 10 to 15 kt. Seas 2 to 3 ft. $$ GMZ015-210230- NE Gulf N of 25N E of 87W- 930 AM EST Thu Dec 20 2018 ...GALE WARNING... .TODAY...SW winds 25 to 30 kt. Seas 8 to 11 ft. Scattered showers and isolated thunderstorms. .TONIGHT...W winds 30 to 35 kt. Seas 9 to 14 ft in SW swell, building to 12 to 19 ft in SW to W swell late. Scattered showers. .FRI...W to NW winds 30 to 35 kt. Seas 14 to 21 ft in W swell. Scattered showers. .FRI NIGHT...W to NW winds 20 to 30 kt, becoming NW 15 to 20 kt early in the morning. Seas 12 to 19 ft in W swell. .SAT...NW to N winds 10 to 15 kt. Seas 6 to 9 ft in W swell. .SAT NIGHT...NE to E winds 5 to 10 kt. Seas 3 to 5 ft in W swell. .SUN...E winds 5 to 10 kt. Seas 2 to 4 ft. .SUN NIGHT...NE to E winds 5 to 10 kt. Seas 2 to 3 ft. .MON...E winds 5 to 10 kt. Seas 2 to 3 ft. .MON NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. $$ GMZ017-210230- W Central Gulf from 22N to 26N W of 94W- 930 AM EST Thu Dec 20 2018 ...GALE WARNING... .TODAY...NW winds 20 to 25 kt in the morning, increasing to 20 to 30 kt in the afternoon. Seas 3 to 5 ft, building to 8 to 11 ft in the afternoon. .TONIGHT...NW to N winds 20 to 30 kt. Seas 10 to 15 ft. .FRI...NW to N winds 20 to 30 kt, diminishing to 15 to 20 kt in the afternoon. Seas 9 to 13 ft, subsiding to 7 to 10 ft in the afternoon. .FRI NIGHT...N winds 10 to 15 kt, shifting to S late. Seas 6 to 8 ft in N to NE swell. .SAT...S winds 15 to 20 kt. Seas 5 to 7 ft. .SAT NIGHT...SE to S winds 15 to 20 kt. Seas 4 to 6 ft. .SUN...SE to S winds 10 to 15 kt. Seas 3 to 5 ft. .SUN NIGHT...SE winds 10 kt. Seas 2 to 3 ft. .MON...SE winds 5 to 10 kt. Seas 2 to 3 ft. .MON NIGHT...SE winds 10 to 15 kt. Seas 3 to 4 ft. $$ GMZ019-210230- Central Gulf from 22N to 26N between 87W and 94W- 930 AM EST Thu Dec 20 2018 ...GALE WARNING... .TODAY...W to NW winds 30 to 35 kt. Seas 6 to 8 ft, building to 9 to 13 ft towards evening. Winds and seas higher in and near scattered showers and thunderstorms along and east of front. .TONIGHT...W to NW winds 25 to 35 kt. Seas 12 to 18 ft. .FRI...NW winds 20 to 30 kt. Seas 13 to 20 ft in NW swell. .FRI NIGHT...NW winds 20 to 30 kt, diminishing to 15 to 20 kt late. Seas 10 to 16 ft, subsiding to 8 to 12 ft in NW swell late. .SAT...E winds 5 to 10 kt. Seas 4 to 6 ft in NW to N swell. .SAT NIGHT...E to SE winds 10 to 15 kt. Seas 3 to 5 ft. .SUN...SE winds 10 to 15 kt. Seas 3 to 5 ft. .SUN NIGHT...E winds 10 to 15 kt. Seas to 4 ft. .MON...E winds 10 to 15 kt. Seas 3 to 4 ft. .MON NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. $$ GMZ021-210230- E Gulf from 22N to 25N E of 87W including Straits of Florida- 930 AM EST Thu Dec 20 2018 ...GALE WARNING... .TODAY...SW winds 20 to 30 kt. Seas 8 to 11 ft. Scattered showers and isolated thunderstorms. .TONIGHT...W winds 25 to 35 kt. Seas 9 to 14 ft, building to 12 to 19 ft in W swell late. Scattered showers. .FRI...W winds 30 to 40 kt. Seas 13 to 20 ft. Isolated showers. .FRI NIGHT...W to NW winds 20 to 30 kt, except 30 to 35 kt early Straits of Florida diminishing to 20 to 25 kt late. Seas 12 to 18 ft, subsiding to 10 to 15 ft late. Isolated showers. .SAT...N winds 10 to 15 kt. Seas 8 to 11 ft in NW swell. .SAT NIGHT...NE to E winds 10 to 15 kt. Seas 4 to 6 ft in NW swell. .SUN...NE to E winds 10 to 15 kt. Seas 3 to 5 ft. .SUN NIGHT...NE to E winds 10 to 15 kt. Seas 3 to 5 ft. .MON...NE to E winds 10 to 15 kt. Seas 3 to 4 ft. .MON NIGHT...NE to E winds 10 to 15 kt. Seas 3 to 4 ft. $$ GMZ023-210230- SW Gulf S of 22N W of 94W- 930 AM EST Thu Dec 20 2018 .TODAY...NW to N winds 15 to 20 kt, increasing to 20 to 25 kt in the afternoon. Seas 3 to 4 ft, building to 6 to 9 ft in the afternoon. .TONIGHT...NW to N winds 20 to 30 kt. Seas 8 to 11 ft. .FRI...NW to N winds 20 to 25 kt, becoming N 10 to 15 kt late in the afternoon. Seas 8 to 12 ft in N swell. .FRI NIGHT...NE winds 5 to 10 kt, becoming SE 10 to 15 kt late. Seas 6 to 9 ft in N swell. .SAT...SE winds 15 to 20 kt. Seas 3 to 5 ft. .SAT NIGHT...SE winds 15 to 20 kt. Seas 3 to 5 ft. .SUN...SE winds 10 to 15 kt. Seas 3 to 4 ft. .SUN NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .MON...NE to E winds 10 to 15 kt. Seas 3 to 4 ft. .MON NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft.. $$ GMZ025-210230- E Bay of Campeche including Campeche Bank- 930 AM EST Thu Dec 20 2018 .TODAY...Within 60 nm of coast of Campeche, SW to W winds 5 to 10 kt, becoming W to NW 15 to 20 kt in the late morning and afternoon. Elsewhere, W to NW winds 20 to 25 kt. Seas 3 to 5 ft, building to 5 to 7 ft in W to NW swell towards evening. Isolated showers. .TONIGHT...NW to N winds 20 to 30 kt. Seas 8 to 12 ft in NW to N swell. Isolated showers. .FRI...NW to N winds 20 to 25 kt. Seas 9 to 13 ft in NW to N swell. Isolated showers. .FRI NIGHT...N to NE winds 10 to 15 kt. Seas 7 to 10 ft in NW to N swell. .SAT...E winds 5 to 10 kt. Seas 3 to 5 ft in NW to N swell. .SAT NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. .SUN...E winds 10 to 15 kt. Seas 3 to 4 ft. .SUN NIGHT...NE to E winds 15 to 20 kt. Seas 3 to 5 ft. .MON...NE to E winds 10 to 15 kt. Seas 3 to 4 ft. .MON NIGHT...NE to E winds 15 to 20 kt. Seas 3 to 4 ft. $$ Forecaster Aguirre