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Offshore Marine Forecast


000

FZNT24 KNHC 210730

OFFNT4



Offshore Waters Forecast for the Gulf of America

NWS National Hurricane Center Miami, FL

330 AM EDT Tue Apr 21 2026



Offshore Waters Forecast for the Gulf of America



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.



GMZ001-211930-

Synopsis for the Gulf of America

330 AM EDT Tue Apr 21 2026



.SYNOPSIS...A cold front extends across the Florida Straits

westward to near 24N85W, then dissipating front to 22N93W. Fresh 

to locally strong NE winds and moderate to rough seas will 

prevail N of the front today. The western portion of this boundary

will gradually dissipate over the central and western Gulf today,

while the eastern portion will move across Cuba and the Yucatan 

Channel before stalling along about 21N Wed and dissipating early

Thu. Gentle to moderate southeasterly winds will return to the 

Gulf on Thu. 



$$



GMZ040-211930-

NW Gulf of America including Stetson Bank-

330 AM EDT Tue Apr 21 2026



.TODAY...SE winds 15 to 20 kt. Seas 5 to 7 ft. 

.TONIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft. 

.WED...SE winds 10 to 15 kt. Seas 4 to 6 ft in E swell. 

.WED NIGHT...E to SE winds 10 to 15 kt. Seas 4 to 6 ft. 

.THU...SE winds 10 to 15 kt. Seas 3 to 5 ft. 

.THU NIGHT...SE winds 15 kt. Seas 3 to 5 ft. 

.FRI...SE to S winds 10 to 15 kt. Seas 3 to 5 ft. 

.FRI NIGHT...SE winds 10 to 15 kt. Seas 3 to 5 ft. 

.SAT...SE winds 10 to 15 kt. Seas 2 to 4 ft. 

.SAT NIGHT...SE winds 10 to 15 kt. Seas 2 to 4 ft. 



$$



GMZ041-211930-

SW Louisiana Offshore Waters including Flower Garden Bank Marine

Sanctuary-

330 AM EDT Tue Apr 21 2026



.TODAY...E to SE winds 15 to 20 kt. Seas 5 to 7 ft in E swell. 

.TONIGHT...E to SE winds 15 to 20 kt. Seas 5 to 7 ft in E swell. 

.WED...E to SE winds 10 to 15 kt. Seas 5 to 7 ft. Scattered

showers and isolated tstms. 

.WED NIGHT...E to SE winds 10 to 15 kt. Seas 5 to 7 ft. 

.THU...SE winds 10 kt. Seas 5 to 7 ft in E to SE swell. 

.THU NIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft.

.FRI...SE to S winds 10 to 15 kt. Seas 3 to 5 ft. 

.FRI NIGHT...SE winds 10 to 15 kt. Seas 3 to 5 ft. 

.SAT...SE to S winds 10 kt. Seas 2 to 4 ft. 

.SAT NIGHT...SE winds 10 to 15 kt. Seas 2 to 4 ft. 



$$



GMZ056-211930-

N Central Gulf of America Offshore Waters-

330 AM EDT Tue Apr 21 2026



.TODAY...E winds 20 kt. Seas 6 to 9 ft in E swell. 

.TONIGHT...E to SE winds 15 to 20 kt. Seas 6 to 8 ft in E to SE

swell. 

.WED...E to SE winds 15 to 20 kt. Seas 6 to 8 ft. Scattered

showers. 

.WED NIGHT...E to SE winds 10 to 15 kt. Seas 6 to 8 ft in E to SE

swell. 

.THU...E to SE winds 10 to 15 kt. Seas 5 to 7 ft. 

.THU NIGHT...SE winds 10 to 15 kt. Seas 5 to 7 ft in E to SE

swell. 

.FRI...SE to S winds 10 to 15 kt. Seas 3 to 5 ft. 

.FRI NIGHT...SE winds 10 kt. Seas 2 to 4 ft. 

.SAT...SE to S winds 10 kt. Seas 2 to 4 ft. 

.SAT NIGHT...SE to S winds 10 to 15 kt. Seas 3 ft or less. 



$$



GMZ057-211930-

NE Gulf of America N of 26N E of 87W-

330 AM EDT Tue Apr 21 2026



.TODAY...E winds 20 to 25 kt. Seas 6 to 9 ft in E swell.

.TONIGHT...NE to E winds 10 to 15 kt, becoming E to SE 20 to

25 kt late. Seas 6 to 8 ft. 

.WED...E to SE winds 15 to 20 kt. Seas 6 to 8 ft in SE swell. 

.WED NIGHT...E to SE winds 10 to 15 kt. Seas 5 to 7 ft in SE

swell. 

.THU...E to SE winds 10 to 15 kt. Seas 5 to 7 ft. 

.THU NIGHT...SE winds 10 to 15 kt. Seas 5 to 7 ft in SE swell. 

.FRI...SE winds 10 to 15 kt. Seas 3 to 5 ft. 

.FRI NIGHT...SE winds 10 kt. Seas 2 to 4 ft. 

.SAT...SE winds 10 kt in the morning, becoming variable less than

5 kt. Seas 3 ft or less. 

.SAT NIGHT...Variable winds less than 5 kt. Seas 3 ft or less in

SE swell, subsiding to 3 ft or less late. 



$$



GMZ058-211930-

W Central Gulf of America from 22N to 26N W of 94W-

330 AM EDT Tue Apr 21 2026



.TODAY...SE winds 10 to 15 kt. Seas 5 to 7 ft. 

.TONIGHT...E to SE winds 10 to 15 kt. Seas 4 to 6 ft. 

.WED...SE winds 10 to 15 kt. Seas 4 to 6 ft in NE to E swell. 

.WED NIGHT...E to 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...SE winds 10 to 15 kt. Seas 3 to 5 ft.

.FRI...SE winds 10 to 15 kt. Seas 3 to 5 ft. 

.FRI NIGHT...E to SE winds 10 to 15 kt. Seas 3 to 5 ft. 

.SAT...E to SE winds 10 to 15 kt. Seas 2 to 4 ft. 

.SAT NIGHT...SE winds 10 to 15 kt. Seas 2 to 4 ft. 



$$



GMZ045-211930-

W Central Gulf of America from 22N to 26N between 91W and 94W-

330 AM EDT Tue Apr 21 2026



.TODAY...E to SE winds 10 to 15 kt. Seas 5 to 7 ft in NE swell. 

.TONIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft in NE to E swell. 

.WED...SE winds 10 to 15 kt. Seas 5 to 7 ft in NE to E swell. 

.WED NIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft in E swell. 

.THU...E to SE winds 10 to 15 kt. Seas 5 to 7 ft in E swell. 

.THU NIGHT...E to SE winds 10 to 15 kt. Seas 3 to 5 ft. 

.FRI...SE winds 10 to 15 kt. Seas 3 to 5 ft. 

.FRI NIGHT...E to SE winds 10 to 15 kt. Seas 3 to 5 ft. 

.SAT...E to SE winds 10 to 15 kt. Seas 2 to 4 ft. 

.SAT NIGHT...E to SE winds 10 to 15 kt. Seas 2 to 4 ft. 



$$



GMZ046-211930-

Central Gulf of America from 22N to 26N between 87W and 91W-

330 AM EDT Tue Apr 21 2026



.TODAY...E winds 15 to 20 kt. Seas 6 to 9 ft in NE swell. 

.TONIGHT...E winds 15 to 20 kt. Seas 6 to 8 ft in NE to E swell. 

.WED...E to SE winds 15 to 20 kt. Seas 6 to 8 ft in E swell.

Scattered showers. 

.WED NIGHT...E to SE winds 10 to 15 kt. Seas 6 to 8 ft in E

swell. Scattered showers. 

.THU...E to SE winds 10 to 15 kt. Seas 5 to 7 ft in E swell. 

.THU NIGHT...E to SE winds 10 to 15 kt. Seas 4 to 6 ft. 

.FRI...SE winds 10 to 15 kt. Seas 3 to 5 ft. 

.FRI NIGHT...E to SE winds 10 to 15 kt. Seas 2 to 4 ft. 

.SAT...SE winds 10 to 15 kt. Seas 2 to 4 ft. 

.SAT NIGHT...E to SE winds 10 to 15 kt. Seas 2 to 4 ft. 



$$



GMZ047-211930-

SE Gulf of America from 22N to 26N E of 87W including Straits of

Florida-

330 AM EDT Tue Apr 21 2026



.TODAY...NE to E winds 20 to 25 kt. Seas 6 to 9 ft in NE swell. 

.TONIGHT...E winds 20 to 25 kt. Seas 6 to 9 ft in NE to E swell. 

.WED...E winds 15 to 20 kt. Seas 6 to 9 ft in E swell. Scattered

showers. 

.WED NIGHT...E to SE winds 15 to 20 kt. Seas 6 to 8 ft. Scattered

showers. 

.THU...E to SE winds 10 to 15 kt. Seas 5 to 7 ft. 

.THU NIGHT...SE winds 10 to 15 kt. Seas 5 to 7 ft.

.FRI...SE winds 10 kt in the morning, becoming variable less than

5 kt. Seas 3 to 5 ft. 

.FRI NIGHT...E to SE winds 10 kt. Seas 2 to 4 ft.

.SAT...E to SE winds 10 kt. Seas 3 ft or less. 

.SAT NIGHT...E winds 10 kt. Seas 3 ft or less. 



$$



GMZ048-211930-

SW Gulf of America S of 22N W of 94W-

330 AM EDT Tue Apr 21 2026



.TODAY...NE to E winds 10 kt in the morning, becoming variable

less than 5 kt. Seas 4 to 6 ft in N to NE swell. 

.TONIGHT...E winds 10 kt. Seas 3 to 5 ft. 

.WED...E to SE winds 10 kt. Seas 3 to 5 ft. 

.WED NIGHT...NE to E winds 10 kt. Seas 3 to 5 ft. 

.THU...SE winds 10 to 15 kt. Seas 3 to 5 ft. 

.THU NIGHT...E to SE winds 10 to 15 kt. Seas 2 to 4 ft. 

.FRI...SE winds 10 to 15 kt. Seas 3 to 5 ft. 

.FRI NIGHT...SE winds 10 to 15 kt. Seas 3 to 5 ft. 

.SAT...E to SE winds 10 to 15 kt. Seas 3 to 5 ft. 

.SAT NIGHT...SE winds 10 to 15 kt. Seas 2 to 4 ft. 



$$



GMZ049-211930-

Central Bay of Campeche-

330 AM EDT Tue Apr 21 2026



.TODAY...E winds 10 to 15 kt. Seas 4 to 6 ft. 

.TONIGHT...NE to E winds 10 to 15 kt. Seas 4 to 6 ft. 

.WED...E to SE winds 10 to 15 kt. Seas 3 to 5 ft. 

.WED NIGHT...NE winds 10 to 15 kt. Seas 3 to 5 ft. 

.THU...S of 20N, E to SE winds 10 kt in the morning, becoming

variable less than 5 kt. N of 20N, E to SE winds 10 kt. Seas 3 to

5 ft. 

.THU NIGHT...E winds 10 to 15 kt. Seas 2 to 4 ft. 

.FRI...E to SE 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 to SE winds 10 kt. Seas 2 to 4 ft. 

.SAT NIGHT...E winds 10 to 15 kt. Seas 2 to 4 ft. 



$$



GMZ050-211930-

E Bay of Campeche including Campeche Bank-

330 AM EDT Tue Apr 21 2026



.TODAY...NE to E winds 10 to 15 kt. Seas 4 to 6 ft. 

.TONIGHT...NE to E winds 15 to 20 kt. Seas 4 to 6 ft. 

.WED...E to SE winds 10 to 15 kt. Seas 4 to 6 ft. 

.WED NIGHT...NE to E winds 10 to 15 kt. Seas 4 to 6 ft. 

.THU...E to SE winds 10 to 15 kt. Seas 3 to 5 ft. 

.THU NIGHT...E winds 10 to 15 kt. Seas 2 to 4 ft. 

.FRI...SE winds 10 to 15 kt, shifting to NE in the afternoon.

Seas 2 to 4 ft. 

.FRI NIGHT...E winds 10 to 15 kt. Seas 2 to 4 ft. 

.SAT...SE winds 10 to 15 kt, shifting to NE in the afternoon.

Seas 2 to 4 ft. 

.SAT NIGHT...NE to E winds 10 to 15 kt. Seas 2 to 4 ft. 



$$



Forecaster AL
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