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Offshore Marine Forecast


000

FZNT24 KNHC 181453

OFFNT4



Offshore Waters Forecast for the Gulf of America

NWS National Hurricane Center Miami, FL

1053 AM EDT Thu Jun 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.



GMZ001-190300-

Synopsis for the Gulf of America

1053 AM EDT Thu Jun 18 2026



.SYNOPSIS...The Atlantic ridge extends across Florida into the

Gulf region. The pressure gradient between this system and lower

pressures over Texas and northeastern Mexico will support fresh 

to strong southerly winds over the western and central Gulf, and 

moderate to fresh winds over the eastern Gulf through Fri. Expect

rough seas N of 27N and offshore of the Louisiana coast this 

morning to shift eastward with these winds through Thu night 

before diminishing. Winds and seas will diminish basin-wide late 

Fri through the weekend as weak high pressure settles over the 

eastern Gulf. 



$$



GMZ040-190300-

NW Gulf of America including Stetson Bank-

1053 AM EDT Thu Jun 18 2026



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

.TONIGHT...SE to S winds 15 to 20 kt. Seas 5 to 7 ft. 

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

.FRI NIGHT...SE to S winds 15 kt. Seas 5 to 7 ft. 

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

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

.SUN...SE to S winds 15 kt. Seas 4 to 6 ft. 

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

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

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



$$



GMZ041-190300-

SW Louisiana Offshore Waters including Flower Garden Bank Marine

Sanctuary-

1053 AM EDT Thu Jun 18 2026



.TODAY...S winds 20 kt. Seas 6 to 8 ft in SE swell.

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

.FRI...SE to S winds 15 to 20 kt. Seas 5 to 7 ft in SE swell. 

.FRI NIGHT...SE to S winds 10 to 15 kt. Seas 5 to 7 ft in SE

swell. 

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

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

.SUN...SE to S winds 15 kt. Seas 4 to 6 ft. 

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

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

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



$$



GMZ056-190300-

N Central Gulf of America Offshore Waters-

1053 AM EDT Thu Jun 18 2026



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

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

.FRI...S winds 15 to 20 kt. Seas 5 to 7 ft in SE to S swell. 

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

swell. 

.SAT...S winds 10 to 15 kt. Seas 4 to 6 ft. 

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

.SUN...S winds 10 to 15 kt. Seas 3 to 5 ft. 

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

.MON...S winds 10 to 15 kt. Seas 3 to 5 ft. 

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



$$



GMZ057-190300-

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

1053 AM EDT Thu Jun 18 2026



.TODAY...S winds 15 to 20 kt. Seas 6 to 8 ft in S to SW swell. 

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

.FRI...S to SW winds 10 to 15 kt. Seas 5 to 7 ft in S to SW

swell. 

.FRI NIGHT...S to SW winds 10 kt W of 85W, and variable less than

5 kt E of 85W. Seas 3 to 5 ft. 

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

.SAT NIGHT...W of 85W, variable winds less than 5 kt, becoming SE

to S 10 kt late. E of 85W, NW to N winds 10 kt in the

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

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

5 kt. Seas 3 ft or less. 

.SUN NIGHT...W of 85W, SE to S winds 10 kt. E of 85W, variable

winds less than 5 kt, becoming S 10 kt late. Seas 3 ft

or less. 

.MON...W of 85W, S to SW winds 10 kt in the morning, becoming

variable less than 5 kt. E of 85W, variable winds less than 5 kt.

Seas 3 ft or less. 

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

S to SW swell, subsiding to 3 ft or less late. 



$$



GMZ058-190300-

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

1053 AM EDT Thu Jun 18 2026



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

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

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

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

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

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

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

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

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

.MON NIGHT...SE winds 15 kt. Seas 4 to 6 ft. 



$$



GMZ045-190300-

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

1053 AM EDT Thu Jun 18 2026



.TODAY...SE to S winds 15 to 20 kt. Seas 6 to 8 ft.

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

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

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

swell. 

.SAT...SE winds 15 to 20 kt. Seas 4 to 6 ft. 

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

.SUN...SE winds 15 kt. Seas 4 to 6 ft. 

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

.MON...SE winds 15 to 20 kt. Seas 4 to 6 ft. 

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



$$



GMZ046-190300-

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

1053 AM EDT Thu Jun 18 2026



.TODAY...SE to S winds 20 to 25 kt. Seas 6 to 8 ft in SE swell. 

.TONIGHT...SE winds 20 to 25 kt. Seas 6 to 8 ft. 

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

.FRI NIGHT...E to SE winds 20 to 25 kt S of 24N, and SE 15 to

20 kt N of 24N. Seas 5 to 7 ft. 

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

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

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

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

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

.MON NIGHT...E to SE winds 20 to 25 kt S of 24N, and E to SE

10 to 15 kt N of 24N. Seas 4 to 6 ft. 



$$



GMZ047-190300-

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

Florida-

1053 AM EDT Thu Jun 18 2026



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

.TONIGHT...SE to S winds 15 to 20 kt. Seas 5 to 7 ft. 

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

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

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

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

.SUN...S of 24N, SE to S winds 10 kt. N of 24N, 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 to 15 kt. Seas 2 to 4 ft. 

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

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



$$



GMZ048-190300-

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

1053 AM EDT Thu Jun 18 2026



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

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

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

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

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

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

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

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



$$



GMZ049-190300-

Central Bay of Campeche-

1053 AM EDT Thu Jun 18 2026



.TODAY...SE to S winds 15 to 20 kt. Seas 3 to 5 ft.

.TONIGHT...E to SE winds 15 to 20 kt. Seas 3 to 5 ft. 

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

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

.SAT...SE winds 15 to 20 kt. Seas 4 to 6 ft. 

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

.SUN...SE winds 15 to 20 kt. Seas 3 to 5 ft. 

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

.MON...E to SE winds 15 to 20 kt. Seas 3 to 5 ft.

.MON NIGHT...E winds 15 to 20 kt. Seas 3 to 5 ft. 



$$



GMZ050-190300-

E Bay of Campeche including Campeche Bank-

1053 AM EDT Thu Jun 18 2026



.TODAY...SE winds 15 to 20 kt. Seas 3 to 5 ft. 

.TONIGHT...NE winds 10 to 15 kt, shifting to SE 15 to 20 kt late.

Seas 3 to 5 ft. 

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

.FRI NIGHT...NE winds 15 to 20 kt, shifting to SE late.

Seas 3 to 5 ft. 

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

.SAT NIGHT...NE winds 15 to 20 kt, shifting to SE late.

Seas 3 to 5 ft. 

.SUN...W of 90W, SE winds 15 to 20 kt, shifting to NE 10 kt in

the afternoon. E of 90W, SE winds 10 to 15 kt, shifting to NE to

E 15 to 20 kt in the afternoon. Seas 3 to 5 ft. 

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

.MON...W of 90W, SE winds 15 to 20 kt, shifting to NE to E 10 kt

in the afternoon. E of 90W, E winds 15 to 20 kt. Seas 3 to 5 ft. 

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



$$



Forecaster GR
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