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Offshore Marine Forecast


000

FZNT24 KNHC 210314

OFFNT4



Offshore Waters Forecast for the Gulf of America

NWS National Hurricane Center Miami, FL

1114 PM EDT Mon Jul 20 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.



GMZ001-211515-

Synopsis for the Gulf of America

1114 PM EDT Mon Jul 20 2026



.SYNOPSIS...Recently upgraded Tropical Storm Bertha is near 

28.2N 85.9W, or about 120 nm S of Panama City, Florida at 11 PM 

EDT, and is stationary. Maximum sustained winds are 35 kt with 

gusts to 45 kt, and the minimum central pressure is 999 mb. Bertha

will move to near 28.8N 86.6W Tue morning, to near 29.1N 87.3W 

Tue evening with maximum sustained winds 45 kt gusts 55 kt, to 

near 29.3N 88.1W Wed morning, then move inland to near 29.3N 89.4W

Wed evening and continue inland to near 29.3N 90.7W Thu morning. 

Bertha is forecast to weaken to a tropical depression near 29.3N 

92.1W Thu evening, and change little in intensity as it moves to 

near 29.3N 94.6W late on Fri. Swells generated by Bertha are 

affecting portions of the Gulf coast of Florida and are likely to 

spread westward during the rest of the week. Otherwise, high 

pressure over the western Gulf will become less evident by 

midweek. After midweek, Atlantic high pressure will extend 

westward to the central Gulf.



$$



GMZ040-211515-

NW Gulf of America including Stetson Bank-

1114 PM EDT Mon Jul 20 2026



.OVERNIGHT...S to SW winds 10 kt. Seas 3 ft or less. 

.TUE...SW to W winds 10 kt. Seas 3 ft or less. 

.TUE NIGHT...S to SW winds 10 kt, shifting to SW 15 to 20 kt

early in the morning. Seas 2 to 4 ft. 

.WED...W winds 10 to 15 kt, shifting to S to SW early in the

evening. Seas 2 to 4 ft. 

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

.THU...S to SW winds 10 to 15 kt. Seas 2 to 4 ft. 

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

.FRI...S winds 10 to 15 kt. Seas 3 ft or less. 

.FRI NIGHT...SE to S winds 10 to 15 kt. Seas 2 to 4 ft. 

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

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



$$



GMZ041-211515-

SW Louisiana Offshore Waters including Flower Garden Bank Marine

Sanctuary-

1114 PM EDT Mon Jul 20 2026



.OVERNIGHT...W winds 10 to 15 kt. Seas 2 to 4 ft. 

.TUE...W to NW winds 10 to 15 kt. Seas 3 to 5 ft. Isolated

thunderstorms.

.TUE NIGHT...SW to W winds 15 to 20 kt. Seas 3 to 5 ft. 

.WED...SW to W winds 15 to 20 kt. Seas 5 to 7 ft. Scattered

showers and isolated thunderstorms. 

.WED NIGHT...SW winds 15 to 20 kt. Seas 5 to 7 ft in W swell. 

.THU...SW winds 10 to 15 kt. Seas 4 to 6 ft. 

.THU NIGHT...S winds 10 to 15 kt. Seas 2 to 4 ft. 

.FRI...SE to S winds 10 kt. Seas 3 ft or less. 

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

.SAT...SE to S winds 10 kt. Seas 3 ft or less.

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



$$



GMZ056-211515-

N Central Gulf of America Offshore Waters-

1114 PM EDT Mon Jul 20 2026



...TROPICAL STORM WARNING...



.OVERNIGHT...TROPICAL STORM CONDITIONS POSSIBLE. W of 90W, W to

NW winds 10 to 15 kt. Seas 4 to 6 ft. Elsewhere, W to NW winds 30

to 35 kt. Seas 5 to 7 ft. Scattered to numerous squalls.

.TUE...TROPICAL STORM CONDITIONS EXPECTED. W of 90W, W winds

15 to 20 kt. Seas 3 to 5 ft. Elsewhere, W winds 30 to 35 kt,

becoming SW to W 40 to 45 kt. Seas 9 to 14 ft. Numerous squalls 

and thunderstorms.

.TUE NIGHT...TROPICAL STORM CONDITIONS EXPECTED. W of 90W, SW

to W winds 15 to 20 kt. Seas 4 to 6 ft. Elsewhere, SW to W winds

40 to 45 kt. Seas 10 to 15 ft. Scattered to numerous squalls and 

thunderstorms.

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

winds 25 to 30 kt. Elsewhere, SW winds 35 to 40 kt, diminishing

to 25 to 30 kt. Seas 6 to 8 ft W of 90W, and 9 to 14 ft elsewhere.

Scattered to numerous squalls and thunderstorms. 

.WED NIGHT...TROPICAL STORM CONDITIONS POSSIBLE. S to SW winds

20 to 25 kt. Seas 7 to 10 ft. 

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

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

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

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

.SAT...W of 89W, SE to S 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 S 10 kt 

early in the morning. Seas 2 to 4 ft.



$$



GMZ057-211515-

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

1114 PM EDT Mon Jul 20 2026



...TROPICAL STORM WARNING...



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

15 to 20 kt. Seas 4 to 6 ft. Elsewhere, S to SW winds 30 to

35 kt. Seas 6 to 9 ft. Numerous squalls and thunderstorms.

.TUE...TROPICAL STORM CONDITIONS EXPECTED. S of 27N, SW winds

20 to 25 kt. Seas 5 to 7 ft. Elsewhere, S to SW winds 35 to

45 kt. Seas 8 to 12 ft. Numerous squalls and thunderstorms.

.TUE NIGHT...TROPICAL STORM CONDITIONS EXPECTED. S of 27N, S to

SW winds 15 to 20 kt. Seas 6 to 8 ft. Elsewhere, S to SW winds 30

to 40 kt. Seas 9 to 13 ft. Scattered showers and thunderstorms.

.WED...TROPICAL STORM CONDITIONS POSSIBLE. S of 27N, S winds

15 to 20 kt. Seas 4 to 6 ft. Elsewhere, S to SW winds 25 to

30 kt. Seas 7 to 11 ft. Scattered showers and isolated

thunderstorms. 

.WED NIGHT...S of 27N, SE to S winds 10 kt. Seas 3 to 5 ft.

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

.THU...SE winds 10 kt. Seas 3 to 5 ft in W to NW swell. 

.THU NIGHT...SE winds 10 kt, shifting to N to NE. Seas 3 to 4 ft.

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

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

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

.SAT NIGHT...Variable winds less than 5 kt, becoming SW 10 kt

late. Seas 2 to 4 ft.



$$



GMZ058-211515-

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

1114 PM EDT Mon Jul 20 2026



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

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

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

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

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

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



$$



GMZ045-211515-

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

1114 PM EDT Mon Jul 20 2026



.OVERNIGHT...S of 24N, E winds 10 to 15 kt. N of 24N, variable

winds less than 5 kt, becoming SW 10 kt early in the morning.

Seas 3 ft or less. 

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

late morning and early afternoon, becoming variable less than

5 kt. Seas 3 ft or less. 

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

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

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

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

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

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

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

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



$$



GMZ046-211515-

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

1114 PM EDT Mon Jul 20 2026



.OVERNIGHT...W to NW winds 10 to 15 kt, shifting to S to SW early

in the morning. Seas 3 to 5 ft. 

.TUE...SW to W winds 10 to 15 kt. Seas 3 to 5 ft. 

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

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

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

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

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

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

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

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

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



$$



GMZ047-211515-

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

Florida-

1114 PM EDT Mon Jul 20 2026



.OVERNIGHT...S of 24N, variable winds less than 5 kt, becoming SE

to S 10 kt early in the morning. N of 24N, S to SW winds 10 to

15 kt. Seas 4 to 6 ft in NW to N swell. 

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

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

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

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

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

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

.SAT...S of 24N, SE winds 10 kt, shifting to NE to E early in the

evening. 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...NE to E winds 10 kt, shifting to SE to S early in

the morning. Seas 2 to 4 ft. 



$$



GMZ048-211515-

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

1114 PM EDT Mon Jul 20 2026



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

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

early in the evening. Seas 2 to 4 ft. 

.TUE NIGHT...E winds 10 to 15 kt. Seas 3 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...S of 21N W of 95W, NE to E winds 10 kt in the late

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

Elsewhere, NE to E winds 10 kt. Seas 2 to 4 ft. 

.THU...E to SE winds 10 kt in the late morning and early

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

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

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



$$



GMZ049-211515-

Central Bay of Campeche-

1114 PM EDT Mon Jul 20 2026



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

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

.TUE NIGHT...N to NE winds 10 to 15 kt, shifting to E early in

the morning. Seas 2 to 4 ft. 

.WED...S of 20N, NE winds early in the evening. Winds SE 10 to

15 kt in the late morning and early afternoon. N of 20N, variable

less than 5 kt. Seas 3 to 5 ft. 

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

.THU...S of 20N, E winds 10 to 15 kt. N of 20N, E to SE winds

10 to 15 kt in the late morning and early afternoon, becoming

variable less than 5 kt. Seas 2 to 4 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 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...NE to E winds 10 to 15 kt. Seas 2 to 4 ft. 



$$



GMZ050-211515-

E Bay of Campeche including Campeche Bank-

1114 PM EDT Mon Jul 20 2026



.OVERNIGHT...NE winds 15 to 20 kt, shifting to SE 10 to 15 kt

early in the morning. Seas 2 to 4 ft. 

.TUE...SE to S winds 10 to 15 kt, shifting to NW to N early in

the evening. Seas 2 to 4 ft. 

.TUE NIGHT...NE winds 15 to 20 kt, shifting to E to SE 10 to

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

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

evening. Seas 2 to 4 ft. 

.WED NIGHT...NE to E winds 15 to 20 kt. Seas 2 to 4 ft. 

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

Seas 2 to 4 ft. 

.THU NIGHT...NE to E winds 15 to 20 kt. Seas 2 to 4 ft. 

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

evening. Seas 2 to 4 ft. 

.FRI NIGHT...NE winds 15 to 20 kt, shifting to E to SE 10 to

15 kt early in the morning. Seas 3 to 5 ft.

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

Seas 3 to 5 ft. 

.SAT NIGHT...NE winds 15 to 20 kt, shifting to E to SE 10 to

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



$$



Forecaster Aguirre