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Offshore Marine Forecast


000

FZNT24 KNHC 181907

OFFNT4



Offshore Waters Forecast for the Gulf of America

NWS National Hurricane Center Miami, FL

307 PM EDT Fri Sep 18 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.



GMZ001-190715-

Synopsis for the Gulf of America

307 PM EDT Fri Sep 18 2026



.SYNOPSIS...A ridge will dominate the Gulf region supporting 

gentle to moderate winds and slight to moderate seas through Sun. 

Winds will then ease to light to gentle speeds early next week, 

with seas remaining slight. Meanwhile, a broad upper-level low 

currently located over northeastern Florida will move into the NE

Gulf on Sat. This feature will lead to increasing shower and 

thunderstorm activity over the eastern and central Gulf waters. 



$$



GMZ040-190715-

NW Gulf of America including Stetson Bank-

307 PM EDT Fri Sep 18 2026



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

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

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

.SUN...E to SE winds 10 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, becoming E 10 kt in the

afternoon. Seas 3 ft or less. 

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

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

the afternoon. Seas 3 ft or less. 

.TUE NIGHT...E to SE winds 10 to 15 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. 



$$



GMZ041-190715-

SW Louisiana Offshore Waters including Flower Garden Bank Marine

Sanctuary-

307 PM EDT Fri Sep 18 2026



.TONIGHT...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 3 ft or less. 

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

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



$$



GMZ056-190715-

N Central Gulf of America Offshore Waters-

307 PM EDT Fri Sep 18 2026



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

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

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

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

the afternoon. 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 to E 10 kt in

the afternoon. Seas 3 ft or less. 

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

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

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

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

the afternoon. Seas 3 ft or less. 

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



$$



GMZ057-190715-

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

307 PM EDT Fri Sep 18 2026



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

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

.SAT NIGHT...W of 85W, E winds 10 kt. E of 85W, variable winds

less than 5 kt, becoming E 10 kt late. Seas 3 ft or

less. 

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

afternoon. Seas 3 ft or less. 

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

E of 85W. Seas 3 ft or less. 

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

.MON NIGHT...SE winds 10 kt W of 85W, and variable less than 5 kt

E of 85W. Seas 3 ft or less. 

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

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

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

afternoon. Seas 3 ft or less. 

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



$$



GMZ058-190715-

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

307 PM EDT Fri Sep 18 2026



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

.SAT...W of 96W, variable winds less than 5 kt. E of 96W, E winds

10 kt, shifting to N to NE in the afternoon. Seas 2 to 4 ft. 

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

.SUN...W of 96W, variable winds less than 5 kt. E of 96W, SE to S

winds 10 kt in the morning, becoming variable 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...E winds 10 kt. Seas 3 ft or less. 

.TUE...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 to 15 kt. Seas 3 ft or less. 

.WED...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 3 ft or

less. 

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



$$



GMZ045-190715-

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

307 PM EDT Fri Sep 18 2026



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

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

less than 5 kt. N of 24N, E to SE winds 10 kt. Seas 2 to 4 ft.

Scattered showers and isolated tstms. 

.SAT NIGHT...S of 24N, variable winds less than 5 kt, becoming E

to SE 10 kt late. N of 24N, E winds 10 to 15 kt. Seas

3 ft or less. 

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

.SUN NIGHT...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. Seas 3 ft or less. 

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

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

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



$$



GMZ046-190715-

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

307 PM EDT Fri Sep 18 2026



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

and isolated tstms. 

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

less than 5 kt. N of 24N, E to SE winds 10 kt. Seas 2 to 4 ft.

Scattered showers and isolated tstms. 

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

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

Scattered showers and isolated tstms. 

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

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

5 kt. Seas 3 ft or less. 

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

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

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



$$



GMZ047-190715-

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

Florida-

307 PM EDT Fri Sep 18 2026



.TONIGHT...E winds 10 kt. Seas 3 to 5 ft. Scattered showers and

isolated tstms. 

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

10 kt in the morning, becoming variable less than 5 kt. Seas 2 to

4 ft. Scattered showers and isolated tstms. 

.SAT NIGHT...S of 24N, NE winds 10 kt in the evening, becoming

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

becoming E to SE 10 kt late. Seas 3 ft or less. 

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

Scattered showers and isolated tstms. 

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

late. Seas 3 ft or less. 

.MON...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. 

.MON NIGHT...Variable winds less than 5 kt, becoming SE to S

10 kt late. Seas 3 ft or less. 

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

5 kt. Seas 3 ft or less. 

.TUE NIGHT...SE winds 10 to 15 kt. Seas 3 ft or less, building to

2 to 4 ft late. 

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

.WED NIGHT...E to SE winds 15 to 20 kt. Seas 4 to 6 ft. 



$$



GMZ048-190715-

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

307 PM EDT Fri Sep 18 2026



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

than 5 kt. Seas 3 ft or less. 

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

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

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

.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. Seas 3 ft or less. 

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

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

winds 10 kt. Seas 3 ft or less. 

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

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

becoming variable less than 5 kt. Elsewhere, NE 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. 



$$



GMZ049-190715-

Central Bay of Campeche-

307 PM EDT Fri Sep 18 2026



.TONIGHT...N winds 10 to 15 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...N winds 10 kt S of 20N, and variable less than 5 kt

N of 20N. Seas 3 ft or less. 

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

.SUN NIGHT...NE winds 10 to 15 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. 

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

5 kt. Seas 3 ft or less. 

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



$$



GMZ050-190715-

E Bay of Campeche including Campeche Bank-

307 PM EDT Fri Sep 18 2026



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

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

.SAT...W of 90W, variable less than 5 kt. Variable winds less

than 5 kt in the morning. E of 90W, N to NE winds 10 kt in the

afternoon. Seas 3 ft or less. 

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

3 ft or less. Scattered showers and isolated tstms. 

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

.SUN NIGHT...N winds 10 to 15 kt, shifting to E to SE late. Seas

3 ft or less. 

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

the afternoon. Seas 3 ft or less. 

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

Seas 3 ft or less. 

.TUE...SE winds 10 kt, shifting to N to NE in the afternoon. Seas

3 ft or less. 

.TUE NIGHT...NE to E winds 10 to 15 kt. 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 to 5 ft. 



$$



Forecaster GR
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