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Offshore Marine Forecast


000

FZNT24 KNHC 220255

OFFNT4



Offshore Waters Forecast for the Gulf of America

NWS National Hurricane Center Miami, FL

1055 PM EDT Tue Jul 21 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.



GMZ001-221500-

Synopsis for the Gulf of America

1055 PM EDT Tue Jul 21 2026



.SYNOPSIS...Tropical Storm Bertha is near 29.4N 87.7W at 11 PM EDT,

and is moving west at 5 kt. Maximum sustained winds are 50 kt 

with gusts to 60 kt, and the minimum central pressure is 995 mb. 

Bertha will begin to gradually weaken as it moves to near 29.4N 

88.6W Wed morning, then inland to near 29.4N 90.2W Wed evening

with maximum sustained winds 40 kt gusts 50 kt. Bertha is forecast

to weaken to a tropical depression near 29.3N 95.0W Thu evening, 

move inland to near 29.5N 97.0W Fri morning, and dissipate Fri 

evening. Swells generated by Bertha will continue spreading 

westward along the northern Gulf Coast during the next few days. 

In the wake of Bertha, weak high pressure centered over the south-

central Gulf will be replaced by ridging associated to a new high

center that forms over the NE Gulf providing for a light to 

gentle anticyclonic wind flow pattern across the basin, except 

for pulsing moderate to fresh winds off the Yucatan Peninsula and 

near NE Mexico and the Texas coast. This should hold through the 

weekend.



$$



GMZ040-221500-

NW Gulf of America including Stetson Bank-

1055 PM EDT Tue Jul 21 2026



.OVERNIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft. 

.WED...SW winds 10 kt. Seas 3 to 4 ft. Isolated showers. 

.WED NIGHT...S to SW winds 10 to 15 kt. Seas 3 to 5 ft. Scattered

showers and thunderstorms. 

.THU...S to SW winds 10 to 15 kt. Seas 3 to 5 ft. Scattered to 

numerous showers and thunderstorms. 

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

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

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

.SAT...SE to S winds 10 kt. Seas 3 to 4 ft. 

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

.SUN...SE to S winds 10 kt. Seas 3 to 4 ft. 

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



$$



GMZ041-221500-

SW Louisiana Offshore Waters including Flower Garden Bank Marine

Sanctuary-

1055 PM EDT Tue Jul 21 2026



.OVERNIGHT...SW to W winds 10 to 15 kt. Seas 4 to 6 ft. 

.WED...SW to W winds 15 to 20 kt, except W to NW 20 to 25 kt E of

92W. Seas 5 to 7 ft, except 6 to 8 ft E of 92W.  Scattered 

showers and isolated thunderstorms.

.WED NIGHT...SW winds 20 to 25 kt. Seas 5 to 7 ft. Numerous

showers and thunderstorms. 

.THU...TROPICAL STORM CONDITIONS POSSIBLE. SW winds 20 to

25 kt. Seas 3 to 5 ft. Scattered showers and thunderstorms. 

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

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

.FRI NIGHT...SE winds 10 to 15 kt. Seas 3 to 4 ft.

.SAT...SE to S winds 10 kt. Seas 3 to 4 ft.

.SAT NIGHT...SE winds 10 kt. Seas 3 to 4 ft. 

.SUN...S winds 10 kt. Seas 3 to 4 ft. 

.SUN NIGHT...S winds 10 kt. Seas 3 to 4 ft. 



$$



GMZ056-221500-

N Central Gulf of America Offshore Waters-

1055 PM EDT Tue Jul 21 2026



...TROPICAL STORM WARNING...



.OVERNIGHT...TROPICAL STORM CONDITIONS. W of 90W, SW to W winds

20 to 25 kt. Seas 5 to 7 ft. Elsewhere, SW winds 40 to 50 kt. Seas

10 to 16 ft. Numerous squalls and thunderstorms.

.WED...TROPICAL STORM CONDITIONS EXPECTED. W of 90W, SW to W

winds 25 to 30 kt. Seas 6 to 8 ft. Elsewhere, SW winds 30 to

35 kt. Seas 8 to 12 ft, except 10 to 14 ft NE part. Scattered

to numerous squalls and thunderstorms.

.WED NIGHT...S to SW winds 20 to 25 kt. Seas 6 to 8 ft. 

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

.THU NIGHT...SE to S winds 10 kt. Seas 3 to 4 ft. 

.FRI...E to SE winds 10 kt. Seas 3 to 4 ft.

.FRI NIGHT...E to SE winds 10 kt. Seas 3 to 4 ft.

.SAT...W of 89W, SE winds 10 kt in the late morning and early 

afternoon, becoming variable less than 5 kt. E of 89W, variable 

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

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

10 kt early in the morning. Seas 2 to 4 ft. 

.SUN...W of 89W, variable winds less than 5 kt. E of 89W,

variable winds less than 5 kt, becoming W 10 kt early in the

evening. Seas 2 to 4 ft. 

.SUN NIGHT...W of 89W, variable winds less than 5 kt, becoming SW

10 kt early in the morning. E of 89W, SW to W winds 10 to 15 kt.

Seas 2 to 4 ft.



$$



GMZ057-221500-

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

1055 PM EDT Tue Jul 21 2026



...TROPICAL STORM WARNING...



.OVERNIGHT...TROPICAL STORM CONDITIONS. S of 27N, S to SW winds

15 to 20 kt. N of 27N, S to SW winds 35 to 40 kt, diminishing to 

25 to 30 kt. Seas 6 to 8 ft S of 27N, and 10 to 15 ft N of 27N. 

Scattered showers and thunderstorms W of 86W. 

.WED...S of 27N, S winds 15 to 20 kt. Seas 4 to 6 ft. Elsewhere,

S to SW winds 25 to 30 kt. Seas 8 to 11 ft. Scattered showers

and isolated thunderstorms.

.WED NIGHT...S of 27N, SE to S winds 10 kt. Seas 4 to 6 ft.

Elsewhere, S to SW winds 15 to 20 kt. Seas 6 to 8 ft. Isolated 

showers.

.THU...SE to S winds 10 kt W of 85W, and variable less than 5 kt 

E of 85W. Seas 5 to 7 ft in W to NW swell. 

.THU NIGHT...W of 85W, variable less than 5 kt. Variable winds

less than 5 kt in the late evening and early morning. E of 85W, N

to NE winds 10 kt early in the morning. Seas 3 to 5 ft in W to NW

swell. 

.FRI...NE to E winds 10 kt. Seas 3 to 4 ft. 

.FRI NIGHT...NE to E winds 10 kt. Seas 3 to 4 ft.

.SAT...Variable winds less than 5 kt. Seas 2 to 3 ft. 

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

to SW 10 kt early in the morning. E of 85W, variable winds less

than 5 kt. Seas 2 to 3 ft.

.SUN...W winds 10 kt. Seas 2 to 4 ft. 

.SUN NIGHT...W winds 10 kt. Seas 2 to 4 ft.



$$



GMZ058-221500-

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

1055 PM EDT Tue Jul 21 2026



.OVERNIGHT...SE to S winds 10 to 15 kt. Seas 3 to 4 ft. 

.WED...W of 96W, SE to S winds 10 to 15 kt. E of 96W, SE to S

winds 10 kt in the late morning and early afternoon, becoming

variable less than 5 kt. Seas 2 to 4 ft. 

.WED NIGHT...SE to S winds 10 to 15 kt. Seas 3 to 4 ft. 

.THU...SE to S winds 10 kt. Seas 3 to 4 ft.

.THU NIGHT...SE winds 10 to 15 kt. Seas 3 to 4 ft. 

.FRI...SE winds 10 to 15 kt. Seas 3 to 4 ft. 

.FRI NIGHT...E to SE winds 10 to 15 kt. Seas 3 to 4 ft. 

.SAT...SE winds 10 kt. Seas 3 to 4 ft. 

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



$$



GMZ045-221500-

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

1055 PM EDT Tue Jul 21 2026



.OVERNIGHT...SE to S winds 10 kt. Seas 2 to 4 ft.. 

.WED...S winds 10 kt in the late morning and early afternoon,

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

.WED NIGHT...SE to S winds 10 to 15 kt. Seas 3 to 4 ft. 

.THU...SE to S winds 10 kt. Seas 3 to 4 ft. 

.THU NIGHT...E to SE winds 10 to 15 kt. Seas 3 to 4 ft. 

.FRI...E to SE winds 10 to 15 kt. Seas 3 to 4 ft.

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

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



$$



GMZ046-221500-

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

1055 PM EDT Tue Jul 21 2026



.OVERNIGHT...S winds 10 to 15 kt. Seas 4 to 6 ft in N to NE

swell. 

.WED...S to SW winds 10 to 15 kt. Seas 3 to 5 ft. 

.WED NIGHT...S of 24N, E to SE winds 10 to 15 kt. N of 24N,

variable winds less than 5 kt, becoming SE to S 10 kt early in

the morning. Seas 3 to 5 ft.

.THU...E to SE winds 10 kt. Seas 3 to 4 ft. 

.THU NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. 

.FRI...E winds 10 kt. Seas 3 to 4 ft. 

.FRI NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. 

.SAT...E to SE winds 10 kt. Seas 3 to 4 ft. 

.SAT NIGHT...E to SE winds 10 to 15 kt. Seas 3 to 4 ft. 

.SUN...S of 24N, E to SE winds 10 to 15 kt. N of 24N, S winds

10 kt in the late morning and early afternoon, becoming variable

less than 5 kt. Seas 2 to 4 ft. 

.SUN NIGHT...S of 24N, E to SE winds 10 to 15 kt. N of 24N,

variable winds less than 5 kt, becoming SE to S 10 kt early in

the morning. Seas 2 to 4 ft. 



$$



GMZ047-221500-

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

Florida-

1055 PM EDT Tue Jul 21 2026



.OVERNIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft in NW to N

swell. Isolated showers and thunderstorms. 

.WED...SE winds 10 kt. Seas 3 to 5 ft in NW to N swell. Isolated

showers and thunderstorms. 

.WED NIGHT...E winds 10 kt. Seas 3 to 5 ft in NW swell. Isolated 

showers and thunderstorms. 

.THU...E winds 10 to 15 kt. Seas 3 to 4 ft. Isolated showers and 

thunderstorms. 

.THU NIGHT...NE to E winds 10 to 15 kt. Seas 3 to 4 ft. 

.FRI...NE to E winds 10 kt. Seas 3 to 4 ft. 

.FRI NIGHT...E winds 10 kt. Seas 3 to 4 ft. 

.SAT...S of 24N, SE winds 10 kt. N of 24N, E to SE winds 10 kt in

the late morning and early afternoon, becoming variable less than

5 kt. Seas 2 to 4 ft. 

.SAT NIGHT...S of 24N, E winds 10 kt, shifting to SE to S early

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

2 to 4 ft.

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

.SUN NIGHT...S of 24N, NE winds 10 kt in the late evening and

early morning, becoming variable less than 5 kt. N of 24N,

variable winds less than 5 kt. Seas 2 to 4 ft.



$$



GMZ048-221500-

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

1055 PM EDT Tue Jul 21 2026



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

.WED...S of 21N W of 95W, variable winds less than 5 kt, becoming

NE to E 10 kt early in the evening. Elsewhere, E winds 10 kt.

Seas 2 to 4 ft. 

.WED NIGHT...E winds 10 kt. Seas 3 to 4 ft.

.THU...E to SE winds 10 kt. Seas 3 to 4 ft. 

.THU NIGHT...NE to E winds 10 to 15 kt. Seas 3 to 4 ft. 

.FRI...E winds 10 to 15 kt. Seas 3 to 4 ft. 

.FRI NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. 

.SAT...E winds 10 kt. Seas 3 to 4 ft. 

.SAT NIGHT...E winds 10 to 15 kt. Seas 3 to 4 ft. 

.SUN...E to SE winds 10 kt. Seas 3 to 4 ft. 

.SUN NIGHT...E to SE winds 10 to 15 kt. Seas 3 to 4 ft. 



$$



GMZ049-221500-

Central Bay of Campeche-

1055 PM EDT Tue Jul 21 2026



.OVERNIGHT...NE to E winds 10 to 15 kt. Seas 3 to 4 ft. 

.WED...S of 20N, E to SE winds 10 to 15 kt, shifting to NE early

in the evening. N of 20N, SE winds 10 to 15 kt in the late

morning and early afternoon, becoming variable less than 5 kt.

Seas 3 to 4 ft. 

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

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

.THU NIGHT...NE winds 15 to 20 kt. Seas 3 to 5 ft.

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

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

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

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

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

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



$$



GMZ050-221500-

E Bay of Campeche including Campeche Bank-

1055 PM EDT Tue Jul 21 2026



.OVERNIGHT...NE winds 15 to 20 kt, becoming E to SE 10 to 15 kt 

early in the morning. Seas 3 to 5 ft. 

.WED...SE winds 10 to 15 kt, shifting to N early in the evening.

Seas 3 to 5 ft. 

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

.THU...SE winds 10 to 15 kt, shifting to N to NE early in the

evening. Seas 3 to 5 ft. 

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

.FRI...E to SE winds 10 to 15 kt, shifting to N to NE early in

the evening. Seas 3 to 4 ft. 

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

.SAT...SE winds 10 to 15 kt, shifting to N to NE early in the

evening. Seas 3 to 5 ft. 

.SAT NIGHT...NE winds 15 to 20 kt, becoming SE 10 to 15 kt late.

Seas 3 to 5 ft. 

.SUN...SE winds 10 to 15 kt, shifting to NE early in the evening.

Seas 3 to 5 ft. 

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



$$



Forecaster Aguirre