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Offshore Marine Forecast


000

FZNT24 KNHC 170932

OFFNT4



Offshore Waters Forecast for the Gulf of America

NWS National Hurricane Center Miami, FL

532 AM EDT Thu Sep 17 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.



GMZ001-172145-

Synopsis for the Gulf of America

532 AM EDT Thu Sep 17 2026



.SYNOPSIS...The gradient related to high pressure over the

SE U.S. that stretches a ridge SW to the Gulf is sustaining fresh  

NE to E winds and moderate seas over the NE and north-central Gulf.

These conditions will spread westward over the remainder of the 

northern Gulf waters through tonight before improving Fri into 

Sat. Meanwhile, a rather broad upper-level low will move towards 

Florida from the western Atlantic today through Fri. This feature

will lead to increasing shower and thunderstorm activity over the

eastern and central Gulf waters. 



$$



GMZ040-172145-

NW Gulf of America including Stetson Bank-

532 AM EDT Thu Sep 17 2026



.TODAY...E winds 10 to 15 kt. Seas 3 to 5 ft. Scattered showers

and isolated tstms. 

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

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

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

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

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

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

.SUN NIGHT...SE winds 10 kt. Seas 3 ft or less. 

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

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



$$



GMZ041-172145-

SW Louisiana Offshore Waters including Flower Garden Bank Marine

Sanctuary-

532 AM EDT Thu Sep 17 2026



.TODAY...E winds 15 to 20 kt. Seas 5 to 7 ft. Scattered showers

and isolated tstms. 

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

.FRI...E winds 10 to 15 kt. Seas 5 to 7 ft. Scattered showers and

isolated tstms. 

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

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

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

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

afternoon. Seas 3 ft or less. 

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

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

afternoon. Seas 3 ft or less. 

.MON NIGHT...NE to E winds 10 kt in the evening, becoming

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



$$



GMZ056-172145-

N Central Gulf of America Offshore Waters-

532 AM EDT Thu Sep 17 2026



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

swell. 

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

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

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

.SAT...NE to E winds 10 kt. Seas 3 to 5 ft. 

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

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

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

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

afternoon. Seas 3 ft or less. 

.MON NIGHT...NE to E winds 10 kt in the evening, becoming

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



$$



GMZ057-172145-

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

532 AM EDT Thu Sep 17 2026



.TODAY...NE to E winds 15 to 20 kt. Seas 5 to 7 ft. Scattered

showers and isolated tstms. 

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

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

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

showers and isolated tstms. 

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

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

.SUN...NE winds 10 kt W of 85W, and variable less than 5 kt E of

85W. Seas 3 ft or less. 

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

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

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



$$



GMZ058-172145-

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

532 AM EDT Thu Sep 17 2026



.TODAY...W of 96W, variable winds less than 5 kt, becoming NE

10 kt in the afternoon. E of 96W, NE to E winds 10 kt. Seas 2 to

4 ft. Scattered showers and isolated tstms. 

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

showers and isolated tstms. 

.FRI...W of 96W, N to NE winds 10 kt. E of 96W, variable winds

less than 5 kt, becoming NE 10 kt in the afternoon. Seas 3 to

5 ft in NE swell. Scattered showers and isolated tstms. 

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

showers and isolated tstms. 

.SAT...Variable winds less than 5 kt. Seas 3 to 5 ft in NE to E

swell. 

.SAT NIGHT...NE to E winds 10 kt, shifting to SE to S late. Seas

2 to 4 ft. 

.SUN...Variable winds less than 5 kt. Seas 2 to 4 ft. 

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

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

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



$$



GMZ045-172145-

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

532 AM EDT Thu Sep 17 2026



.TODAY...E winds 10 to 15 kt. Seas 3 to 5 ft. Scattered showers

and isolated tstms. 

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

showers and isolated tstms. 

.FRI...Variable winds less than 5 kt S of 24N, and E 10 kt N of

24N. Seas 4 to 6 ft in NE swell. Scattered showers and isolated

tstms. 

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

showers and isolated tstms. 

.SAT...Variable winds less than 5 kt S of 24N, and E to SE 10 kt

N of 24N. Seas 3 to 5 ft. 

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

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

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

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

afternoon. Seas 3 ft or less. 

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



$$



GMZ046-172145-

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

532 AM EDT Thu Sep 17 2026



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

and isolated tstms. 

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

and isolated tstms. 

.FRI...S of 24N, E to SE winds 10 kt in the morning, becoming

variable less than 5 kt. N of 24N, E winds 10 to 15 kt. Seas 4 to

6 ft. Scattered showers and isolated tstms. 

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

showers and isolated tstms. 

.SAT...Variable winds less than 5 kt S of 24N, and E 10 kt N of

24N. Seas 3 to 5 ft. 

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

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

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

afternoon. Seas 3 ft or less in NE to E swell, subsiding to 3 ft

or less in the afternoon. 

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

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

afternoon. Seas 3 ft or less. 

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



$$



GMZ047-172145-

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

Florida-

532 AM EDT Thu Sep 17 2026



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

and isolated tstms. 

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

and isolated tstms. 

.FRI...NE to E winds 10 kt. Seas 4 to 6 ft in N to NE swell.

Scattered showers and isolated tstms. 

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

showers and isolated tstms. 

.SAT...Variable winds less than 5 kt S of 24N, and NE to E 10 kt

N of 24N. Seas 2 to 4 ft. 

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

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

.SUN NIGHT...Variable winds less than 5 kt, becoming S 10 kt

late. Seas 3 ft or less. 

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

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



$$



GMZ048-172145-

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

532 AM EDT Thu Sep 17 2026



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

showers and isolated tstms. 

.TONIGHT...N to NE winds 10 to 15 kt. Seas 2 to 4 ft. Scattered

showers and isolated tstms. 

.FRI...NW to N winds 10 kt. Seas 3 ft or less. Scattered showers

and isolated tstms. 

.FRI NIGHT...N to NE winds 10 kt in the evening, becoming

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

isolated tstms. 

.SAT...W to NW 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. 

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

.SUN NIGHT...E to SE winds 10 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 in the evening, becoming

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



$$



GMZ049-172145-

Central Bay of Campeche-

532 AM EDT Thu Sep 17 2026



.TODAY...E winds 10 kt. Seas 2 to 4 ft. Scattered showers and

isolated tstms. 

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

and isolated tstms. 

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

.FRI NIGHT...N to NE winds 10 kt in the evening, becoming

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

isolated tstms. 

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

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

.SUN...Variable winds less than 5 kt. Seas 3 ft or less in NE

swell, subsiding to 3 ft or less in the afternoon. 

.SUN NIGHT...NE to E winds 10 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. 



$$



GMZ050-172145-

E Bay of Campeche including Campeche Bank-

532 AM EDT Thu Sep 17 2026



.TODAY...E winds 10 kt. Seas 2 to 4 ft. 

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

2 to 4 ft. Scattered showers and isolated tstms. 

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

5 kt. Seas 2 to 4 ft. 

.FRI NIGHT...N to NE winds 10 kt, shifting to E to SE late. Seas

3 ft or less. Scattered showers and isolated

tstms. 

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

.SAT NIGHT...N winds 10 kt, shifting to E to SE late.

Seas 3 ft or less. 

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

afternoon. Seas 3 ft or less. 

.SUN NIGHT...NE winds 10 kt, shifting to E to SE late.

Seas 3 ft or less. 

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

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

Seas 3 ft or less. 



$$



Forecaster Ramos
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