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Offshore Marine Forecast


000

FZNT24 KNHC 180837

OFFNT4



Offshore Waters Forecast for the Gulf of America

NWS National Hurricane Center Miami, FL

437 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.



GMZ001-182045-

Synopsis for the Gulf of America

437 AM EDT Thu Jun 18 2026



.SYNOPSIS...Post-Tropical Storm Arthur has dissipated inland

across SE Texas with the low level remnants expected to accelerate

toward the NE through Fri. Strong thunderstorms occurring well to

the SE of these remnants of Arthur are across SE Louisiana and 

the adjacent coastal waters, and will shift NE and inland today. 

Atlantic high pressure has begun to build westward across Florida 

and into the Gulf basin tonight, and will tighten the pressure 

gradient through Thu night to sustain fresh to strong southerly 

winds over the western and central Gulf, and moderate to fresh 

winds over the eastern Gulf. 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. 



$$



GMZ040-182045-

NW Gulf of America including Stetson Bank-

437 AM EDT Thu Jun 18 2026



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

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

.FRI...SE winds 10 to 15 kt. Seas 6 to 8 ft in E to SE swell. 

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

swell. 

.SAT...SE winds 10 to 15 kt. Seas 5 to 7 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 to 20 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 15 to 20 kt. Seas 5 to 7 ft in SE swell. 

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



$$



GMZ041-182045-

SW Louisiana Offshore Waters including Flower Garden Bank Marine

Sanctuary-

437 AM EDT Thu Jun 18 2026



.TODAY...S winds 15 to 20 kt. Seas 6 to 9 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 6 to 8 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 5 to 7 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 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 10 to 15 kt. Seas 4 to 6 ft. 



$$



GMZ056-182045-

N Central Gulf of America Offshore Waters-

437 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 9 ft in SE to S swell. 

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

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

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

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

.SUN...SE to 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. 



$$



GMZ057-182045-

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

437 AM EDT Thu Jun 18 2026



.TODAY...S winds 15 to 20 kt. Seas building 6 to 9 ft in S to SW 

swell.

.TONIGHT...S winds 15 to 20 kt. Seas 6 to 9 ft in S to SW swell. 

.FRI...S to SW winds 10 to 15 kt. Seas 6 to 8 ft in S to SW

swell. 

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

swell. 

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

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

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

evening, becoming variable less than 5 kt. Seas 2 to 4 ft. 

.SUN...Variable winds 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...S to SW winds 10 kt in the morning, becoming variable less

than 5 kt. Seas 3 ft or less. 

.MON NIGHT...W of 85W, variable winds less than 5 kt, becoming S

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

Seas 3 ft or less. 



$$



GMZ058-182045-

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

437 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 6 to 8 ft in E swell. 

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

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

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

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

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

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

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



$$



GMZ045-182045-

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

437 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 6 to 8 ft in E to SE swell. 

.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 5 to 7 ft in E to SE swell. 

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

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

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



$$



GMZ046-182045-

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

437 AM EDT Thu Jun 18 2026



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

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

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

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

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

.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 15 to 20 kt. Seas 4 to 6 ft. 



$$



GMZ047-182045-

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

Florida-

437 AM EDT Thu Jun 18 2026



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

swell. 

.TONIGHT...SE to S winds 15 to 20 kt. Seas 6 to 8 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 4 to 6 ft. 

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

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

.SUN...S of 24N, SE winds 10 kt. N of 24N, SE winds 10 kt in the

morning, becoming variable less than 5 kt. Seas 2 to 4 ft. 

.SUN NIGHT...E to SE winds 10 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. 



$$



GMZ048-182045-

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

437 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 5 to 7 ft. 

.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 NE to E

swell. 

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

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

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

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



$$



GMZ049-182045-

Central Bay of Campeche-

437 AM EDT Thu Jun 18 2026



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

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

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

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

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

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

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

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



$$



GMZ050-182045-

E Bay of Campeche including Campeche Bank-

437 AM EDT Thu Jun 18 2026



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

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

late. E of 90W, SE winds 15 to 20 kt. Seas 4 to 6 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 4 to 6 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...E winds 10 to 15 kt. Seas 4 to 6 ft. 

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

.MON...E to SE 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 Stripling
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