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Offshore Marine Forecast


000

FZNT24 KNHC 202006

OFFNT4



Offshore Waters Forecast for the Gulf of America

NWS National Hurricane Center Miami, FL

406 PM EDT Sun Sep 20 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.



GMZ001-210815-

Synopsis for the Gulf of America

406 PM EDT Sun Sep 20 2026



.SYNOPSIS...Weak ridging across the southeastern U.S. will 

maintain generally gentle to moderate winds across the basin 

through mid week. A vigorous upper-level low and associated 

surface low or trough over the central Gulf will contribute to 

scattered showers and thunderstorms over the eastern Gulf through 

the midweek, with the Straits of Florida the most active area. 

Looking ahead, a cold front may sink into the northern Gulf Thu 

night through Fri, leading to a modest increase in winds across 

the basin.



$$



GMZ040-210815-

NW Gulf of America including Stetson Bank-

406 PM EDT Sun Sep 20 2026



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

.MON...E winds 10 kt. Seas 3 ft or less. 

.MON NIGHT...E to SE winds 10 to 15 kt. Seas 3 ft or less. 

.TUE...NE to E winds 10 kt. Seas 3 ft or less. 

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

.WED...NE to E winds 10 to 15 kt. Seas 3 ft or less. 

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

.THU...NE to E winds 15 kt. Seas 2 to 4 ft. 

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

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

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



$$



GMZ041-210815-

SW Louisiana Offshore Waters including Flower Garden Bank Marine

Sanctuary-

406 PM EDT Sun Sep 20 2026



.TONIGHT...E to SE winds 10 to 15 kt. Seas 3 ft or less. 

.MON...Variable winds less than 5 kt, becoming NE to E 10 kt in

the afternoon. Seas 3 ft or less. 

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

.TUE...NE winds 10 to 15 kt. Seas 3 ft or less. 

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

.WED...NE to E winds 10 to 15 kt. Seas 3 ft or less. 

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

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

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

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

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



$$



GMZ056-210815-

N Central Gulf of America Offshore Waters-

406 PM EDT Sun Sep 20 2026



.TONIGHT...E winds 10 kt. Seas 3 ft or less. 

.MON...NE winds 10 kt. Seas 3 ft or less. Scattered showers and

isolated tstms. 

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

.TUE...NE to E winds 10 kt. Seas 3 ft or less. 

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

.WED...NE to E winds 10 to 15 kt. Seas 3 ft or less. 

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

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

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

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

.FRI NIGHT...E winds 15 to 20 kt. Seas 5 to 7 ft. 



$$



GMZ057-210815-

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

406 PM EDT Sun Sep 20 2026



.TONIGHT...E winds 10 kt. Seas 3 ft or less. Scattered showers

and isolated tstms. 

.MON...Variable winds less than 5 kt, becoming NE to E 10 kt in

the afternoon. Seas 3 ft or less. 

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

.TUE...W of 85W, NE to E winds 10 kt. E of 85W, variable winds

less than 5 kt, becoming NE to E 10 kt in the afternoon. Seas

3 ft or less. 

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

.WED...W of 85W, NE to E winds 10 kt. E of 85W, variable winds

less than 5 kt, becoming NE to E 10 kt in the afternoon. Seas

3 ft or less. 

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

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

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

.FRI...E winds 15 to 20 kt. Seas 4 to 6 ft. 

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



$$



GMZ058-210815-

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

406 PM EDT Sun Sep 20 2026



.TONIGHT...NE to E winds 10 kt, shifting to SE late.

Seas 3 ft or less. 

.MON...Variable winds less than 5 kt W of 96W, and E to SE 10 kt

E of 96W. Seas 3 ft or less. 

.MON NIGHT...E winds 10 to 15 kt. Seas 3 ft or less. 

.TUE...E winds 10 kt. Seas 3 ft or less. 

.TUE NIGHT...E winds 10 to 15 kt. Seas 3 ft or less. 

.WED...NE winds 10 to 15 kt. Seas 3 ft or less. 

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

.THU...NE winds 10 kt. Seas 2 to 4 ft. 

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

.FRI...NE winds 10 to 15 kt. Seas 2 to 4 ft. 

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



$$



GMZ045-210815-

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

406 PM EDT Sun Sep 20 2026



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

.MON...S of 24N, variable winds less than 5 kt. N of 24N,

variable winds less than 5 kt, becoming E 10 kt in the afternoon.

Seas 3 ft or less. 

.MON NIGHT...NE to E winds 10 kt. Seas 3 ft or less. 

.TUE...NE to E winds 10 kt. Seas 3 ft or less. 

.TUE NIGHT...E winds 10 to 15 kt. Seas 3 ft or less. 

.WED...NE to E winds 10 kt. Seas 3 ft or less.

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

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

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

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

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



$$



GMZ046-210815-

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

406 PM EDT Sun Sep 20 2026



.TONIGHT...NE to E winds 10 kt. Seas 3 ft or less. 

.MON...S of 24N, variable less than 5 kt. Variable winds less

than 5 kt in the morning. N of 24N, NE to E winds 10 kt in the

afternoon. Seas 3 ft or less. 

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

.TUE...Variable winds less than 5 kt, becoming E 10 kt in the

afternoon. Seas 3 ft or less. 

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

.WED...E winds 10 kt. Seas 3 ft or less. 

.WED NIGHT...E winds 10 to 15 kt. Seas 3 ft or less. 

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

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

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

.FRI NIGHT...SE winds 15 to 20 kt. Seas 3 to 5 ft. 



$$



GMZ047-210815-

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

Florida-

406 PM EDT Sun Sep 20 2026



.TONIGHT...N to NE winds 10 kt, shifting to SE late.

Seas 3 ft or less. Scattered showers and isolated tstms. 

.MON...S of 24N, S to SW winds 10 kt in the morning, becoming

variable less than 5 kt. N of 24N, variable winds less than 5 kt.

Seas 3 ft or less. Scattered showers and isolated tstms. 

.MON NIGHT...E winds 10 kt, shifting to SE late. Seas

3 ft or less. 

.TUE...S of 24N, S winds 10 kt in the morning, becoming variable

less than 5 kt. N of 24N, variable winds less than 5 kt. Seas

3 ft or less. Scattered showers and isolated tstms. 

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

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

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

.THU...E to SE winds 10 kt, shifting to SE 15 to 20 kt in the

afternoon. Seas 4 to 6 ft. 

.THU NIGHT...SE to S winds 15 to 20 kt. Seas 4 to 6 ft. 

.FRI...SE to S winds 10 to 15 kt. Seas 4 to 6 ft. 

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



$$



GMZ048-210815-

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

406 PM EDT Sun Sep 20 2026



.TONIGHT...NE winds 10 kt in the evening, becoming variable less

than 5 kt. Seas 3 ft or less. 

.MON...Variable winds less than 5 kt. Seas 3 ft or less. 

.MON NIGHT...NE to E winds 10 kt. Seas 3 ft or less. 

.TUE...Variable winds less than 5 kt. Seas 3 ft or less.

Scattered showers and isolated tstms. 

.TUE NIGHT...S of 21N W of 95W, N to NE winds 10 kt in the

evening, becoming variable less than 5 kt. Elsewhere, NE to E

winds 10 kt. Seas 3 ft or less. 

.WED...Variable winds less than 5 kt, becoming N 10 kt in the

afternoon. Seas 3 ft or less. 

.WED NIGHT...N to NE winds 10 kt. Seas 3 ft or less. 

.THU...N winds 10 to 15 kt. Seas 3 ft or less. 

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

.FRI...NW to N winds 10 to 15 kt. Seas 2 to 4 ft. 

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



$$



GMZ049-210815-

Central Bay of Campeche-

406 PM EDT Sun Sep 20 2026



.TONIGHT...N to NE winds 10 kt in the evening, becoming variable

less than 5 kt. Seas 3 ft or less. 

.MON...Variable winds less than 5 kt. Seas 3 ft or less. 

.MON NIGHT...NE winds 10 kt. Seas 3 ft or less. Scattered showers

and isolated tstms. 

.TUE...S of 20N, SE winds 10 kt, shifting to NW in the afternoon.

N of 20N, E to SE winds 10 kt in the morning, becoming variable

less than 5 kt. Seas 3 ft or less. Scattered showers and isolated

tstms. 

.TUE NIGHT...NE winds 10 kt. Seas 3 ft or less. 

.WED...S of 20N, variable winds less than 5 kt, becoming NW to N

10 kt in the afternoon. N of 20N, E winds 10 kt in the morning,

becoming variable less than 5 kt. Seas 3 ft or less. 

.WED NIGHT...NE winds 10 kt. Seas 3 ft or less. 

.THU...NE winds 10 kt. Seas 3 ft or less. 

.THU NIGHT...NE winds 10 to 15 kt. Seas 3 ft or less. 

.FRI...N winds 10 kt. Seas 3 ft or less. 

.FRI NIGHT...NW to N winds 10 kt. Seas 2 to 4 ft. 



$$



GMZ050-210815-

E Bay of Campeche including Campeche Bank-

406 PM EDT Sun Sep 20 2026



.TONIGHT...N winds 10 kt, shifting to E late. Seas 3 ft

or less. Scattered showers and isolated tstms. 

.MON...Variable winds less than 5 kt. Seas 3 ft or less. 

.MON NIGHT...N to NE winds 10 kt, shifting to E late.

Seas 3 ft or less. Scattered showers and isolated tstms. 

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

5 kt. Seas 3 ft or less. 

.TUE NIGHT...N to NE winds 10 to 15 kt, shifting to E late. Seas

3 ft or less. 

.WED...E to SE winds 10 kt, shifting to N to NE in the afternoon.

Seas 3 ft or less. 

.WED NIGHT...NE to E winds 10 to 15 kt. Seas 3 ft or less. 

.THU...NE winds 10 kt. Seas 3 ft or less. 

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

.FRI...Variable winds less than 5 kt W of 90W, and SE 10 to 15 kt

E of 90W. Seas 2 to 4 ft. 

.FRI NIGHT...NE winds 10 to 15 kt, shifting to SE to S late. Seas

2 to 4 ft. 



$$



Forecaster Stripling
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