Offshore Marine Forecast
000
FZNT24 KNHC 211831
OFFNT4
Offshore Waters Forecast for the Gulf of America
NWS National Hurricane Center Miami, FL
231 PM EDT Thu May 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.
GMZ001-220645-
Synopsis for the Gulf of America
231 PM EDT Thu May 21 2026
.SYNOPSIS...High pressure extending from the western Atlantic to
the northern Gulf will change little during the forecast period.
The pressure gradient between it and relatively lower pressures
over Texas and northern Mexico will generally maintain a gentle
to moderate east to southeast wind flow across the basin through
the weekend, with the exception of fresh to strong winds pulsing
off NW Yucatan from the late afternoons and into the night time
hours. A series of upper-level disturbances moving through a
very moist and unstable environment are expected to keep
unsettled weather conditions in the form of large thunderstorm
complexes that will be moving ENE across the NW and west-central
Gulf sections during the next few days. Mariners transiting
through these waters should check the latest forecast and weather
conditions prior to beginning or continuing their transits.
$$
GMZ040-220645-
NW Gulf of America including Stetson Bank-
231 PM EDT Thu May 21 2026
.TONIGHT...SE to S winds 10 kt. Seas 3 to 4 ft. Winds and seas
higher in and near scattered showers and thunderstorms.
.FRI...S winds 10 to 15 kt. Seas 3 to 4 ft. Scattered showers and
thunderstorms, more numerous in the morning.
.FRI NIGHT...SE winds 10 to 15 kt. Seas 3 to 4 ft. Scattered
showers and thunderstorms.
.SAT...SE winds 10 to 15 kt. Seas 3 to 4 ft. Scattered showers
and thunderstorms.
.SAT NIGHT...SE winds 10 to 15 kt. Seas 3 to 5 ft.
.SUN...S of 27N, SE to S winds 10 to 15 kt in the morning,
becoming variable less than 5 kt. N of 27N, S to SW winds 10 to
15 kt. Seas 3 to 5 ft.
.SUN NIGHT...Variable winds less than 5 kt, becoming SE 10 kt
late. Seas 3 to 4 ft.
.MON...SE to S winds 10 kt in the morning, becoming variable less
than 5 kt. Seas 3 to 5 ft in SE swell.
.MON NIGHT...SE winds 10 kt. Seas 3 to 4 ft.
.TUE...SE to S winds 10 kt. Seas 3 to 4 ft.
.TUE NIGHT...SE winds 10 to 15 kt. Seas 3 to 5 ft.
$$
GMZ041-220645-
SW Louisiana Offshore Waters including Flower Garden Bank Marine
Sanctuary-
231 PM EDT Thu May 21 2026
.TONIGHT...SE to S winds 10 kt. Seas 3 to 4 ft. Winds and seas
higher in and near scattered showers and thunderstorms.
.FRI...S winds 10 to 15 kt. Seas 3 to 4 ft. Scattered showers and
thunderstorms.
.FRI NIGHT...SE winds 10 to 15 kt. Seas 3 to 4 ft. Scattered
showers and isolated thunderstorms.
.SAT...SE winds 10 to 15 kt. Seas 3 to 4 ft. Scattered
showers and isolated thunderstorms.
.SAT NIGHT...SE winds 10 to 15 kt. Seas 3 to 5 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...SE to S winds 10 to 15 kt. Seas 3 to 5 ft.
.MON NIGHT...SE winds 10 to 15 kt. Seas 3 to 5 ft.
.TUE...SE to S winds 10 kt. Seas 3 to 4 ft.
.TUE NIGHT...SE winds 10 to 15 kt. Seas 3 to 5 ft.
$$
GMZ056-220645-
N Central Gulf of America Offshore Waters-
231 PM EDT Thu May 21 2026
.TONIGHT...SE to S winds 10 to 15 kt. Seas 3 to 4 ft.
Scattered showers and isolated thunderstorms.
.FRI...SE to S winds 10 to 15 kt. Seas 3 to 4 ft. Scattered
showers and isolated thunderstorms.
.FRI NIGHT...SE to S winds 10 kt. Seas 3 to 4 ft. Isolated
showers and thunderstorms.
.SAT...SE winds 10 kt. Seas 3 to 4 ft. Isolated
showers and thunderstorms.
.SAT NIGHT...SE winds 10 kt. Seas 3 to 4 ft.
.SUN...SE winds 10 to 15 kt. Seas 3 to 5 ft.
.SUN NIGHT...SE winds 10 to 15 kt. Seas 3 to 5 ft.
.MON...SE winds 10 to 15 kt. Seas 3 to 5 ft.
.MON NIGHT...SE winds 10 to 15 kt. Seas 3 to 5 ft.
.TUE...SE winds 10 to 15 kt. Seas 4 to 6 ft.
.TUE NIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft.
$$
GMZ057-220645-
NE Gulf of America N of 26N E of 87W-
231 PM EDT Thu May 21 2026
.TONIGHT...SE winds 10 to 15 kt. Seas 3 to 4 ft.
.FRI...SE winds 10 to 15 kt. Seas 3 to 4 ft. Scattered showers
and isolated thunderstorms.
.FRI NIGHT...SE to S winds 10 kt. Seas 3 to 4 ft. Scattered
showers and isolated thunderstorms.
.SAT...SE winds 10 kt. Seas 3 to 4 ft. Isolated showers and
thunderstorms.
.SAT NIGHT...SE winds 10 kt. Seas 3 to 4 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.
.MON...SE winds 10 to 15 kt. Seas 3 to 5 ft.
.MON NIGHT...SE winds 10 to 15 kt. Seas 3 to 5 ft.
.TUE...SE winds 10 to 15 kt. Seas 4 to 6 ft.
.TUE NIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft.
$$
GMZ058-220645-
W Central Gulf of America from 22N to 26N W of 94W-
231 PM EDT Thu May 21 2026
.TONIGHT...SE winds 10 to 15 kt. Seas 3 to 4 ft.
.FRI...SE to S winds 10 to 15 kt. Seas 3 to 4 ft.
.FRI NIGHT...SE winds 10 to 15 kt. Seas 3 to 4 ft.
.SAT...SE winds 10 to 15 kt. Seas 3 to 5 ft.
.SAT NIGHT...E to SE winds 10 to 15 kt. Seas 3 to 5 ft.
.SUN...W of 96W, E winds 10 to 15 kt in the morning, becoming
variable less than 5 kt. E of 96W, SE winds 10 kt. Seas 3 to
5 ft in E to SE swell.
.SUN NIGHT...E to SE winds 10 kt. Seas 3 to 4 ft.
.MON...SE winds 10 kt in the morning, becoming variable less than
5 kt. Seas 3 to 5 ft in E to SE swell.
.MON NIGHT...E to SE winds 10 to 15 kt. Seas 3 to 4 ft.
.TUE...SE to S winds 10 kt. Seas 3 to 4 ft.
.TUE NIGHT...SE winds 10 to 15 kt. Seas 3 to 4 ft.
$$
GMZ045-220645-
W Central Gulf of America from 22N to 26N between 91W and 94W-
231 PM EDT Thu May 21 2026
.TONIGHT...E to SE winds 10 to 15 kt. Seas 3 to 5 ft.
.FRI...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 4 to 6 ft.
.SUN...SE winds 15 to 20 kt. Seas 4 to 6 ft.
.SUN NIGHT...E to SE winds 10 to 15 kt. Seas 3 to 5 ft.
.MON...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.
.TUE...SE winds 10 to 15 kt. Seas 2 to 4 ft.
.TUE NIGHT...E to SE winds 10 to 15 kt. Seas 2 to 4 ft.
$$
GMZ046-220645-
Central Gulf of America from 22N to 26N between 87W and 91W-
231 PM EDT Thu May 21 2026
.TONIGHT...E to SE winds 10 to 15 kt. Seas 3 to 4 ft.
.FRI...SE winds 10 to 15 kt. Seas 3 to 4 ft.
.FRI NIGHT...E to SE winds 15 to 20 kt S of 24N, and SE 10 to
15 kt N of 24N. Seas 3 to 5 ft.
.SAT...SE winds 10 to 15 kt. Seas 3 to 5 ft.
.SAT NIGHT...E to SE winds 15 to 20 kt. Seas 4 to 6 ft.
.SUN...SE winds 15 to 20 kt. Seas 4 to 6 ft.
.SUN NIGHT...E to SE winds 15 to 20 kt. Seas 4 to 6 ft.
.MON...SE winds 10 to 15 kt. Seas 3 to 5 ft.
.MON NIGHT...E to SE winds 10 to 15 kt. Seas 3 to 5 ft.
.TUE...SE winds 10 to 15 kt. Seas 3 to 5 ft.
.TUE NIGHT...E to SE winds 10 to 15 kt. Seas 3 to 5 ft.
$$
GMZ047-220645-
SE Gulf of America from 22N to 26N E of 87W including Straits of
Florida-
231 PM EDT Thu May 21 2026
.TONIGHT...E to SE winds 10 to 15 kt. Seas 3 to 5 ft.
.FRI...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 kt. Seas 3 to 4 ft.
.SAT NIGHT...E to SE 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 to SE winds 15 to 20 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 15 to 20 kt. Seas 4 to 6 ft.
.TUE...E to SE winds 10 to 15 kt. Seas 4 to 6 ft.
.TUE NIGHT...E to SE winds 10 to 15 kt. Seas 4 to 6 ft.
$$
GMZ048-220645-
SW Gulf of America S of 22N W of 94W-
231 PM EDT Thu May 21 2026
.TONIGHT...S of 21N W of 95W, NE winds 10 kt in the evening,
becoming variable less than 5 kt. Elsewhere, E winds 10 kt. Seas
2 to 4 ft.
.FRI...E to SE winds 10 kt. Seas 2 to 4 ft.
.FRI NIGHT...E to SE winds 10 to 15 kt. Seas 3 ft or less.
.SAT...E to SE winds 10 kt. Seas 2 to 4 ft.
.SAT NIGHT...E winds 10 to 15 kt. Seas 2 to 4 ft.
.SUN...S of 21N W of 95W, NE to E winds 10 kt in the morning,
becoming variable less than 5 kt. Elsewhere, E to SE winds 10 kt.
Seas 2 to 4 ft.
.SUN NIGHT...E winds 10 kt. Seas 2 to 4 ft.
.MON...Variable winds less than 5 kt S of 21N W of 95W, and E
10 kt elsewhere. Seas 2 to 4 ft.
.MON NIGHT...E winds 10 to 15 kt. Seas 2 to 4 ft.
.TUE...SE winds 10 kt. Seas 2 to 4 ft.
.TUE NIGHT...E to SE winds 10 to 15 kt. Seas 2 to 4 ft.
$$
GMZ049-220645-
Central Bay of Campeche-
231 PM EDT Thu May 21 2026
.TONIGHT...NE to E winds 10 to 15 kt. Seas 3 to 5 ft.
.FRI...SE winds 15 to 20 kt. Seas 3 to 5 ft.
.FRI NIGHT...NE to E winds 10 to 15 kt. Seas 3 to 4 ft.
.SAT...E to SE winds 10 to 15 kt. Seas 3 to 4 ft.
.SAT NIGHT...NE to E winds 10 to 15 kt. Seas 3 to 4 ft.
.SUN...SE winds 15 to 20 kt, becoming E to SE 10 kt in the
afternoon. Seas 3 to 5 ft.
.SUN NIGHT...NE to E winds 10 to 15 kt. Seas 3 to 5 ft.
.MON...SE winds 10 to 15 kt. Seas 3 to 5 ft.
.MON NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft.
.TUE...E to SE winds 10 to 15 kt. Seas 3 to 5 ft.
.TUE NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft.
$$
GMZ050-220645-
E Bay of Campeche including Campeche Bank-
231 PM EDT Thu May 21 2026
.TONIGHT...NE to E winds 15 to 20 kt. Seas 4 to 6 ft.
.FRI...E to SE winds 15 to 20 kt. Seas 4 to 6 ft.
.FRI NIGHT...NE winds 15 to 20 kt, becoming E to SE 10 to 15 kt
late. Seas 4 to 6 ft.
.SAT...E winds 10 to 15 kt. Seas 3 to 5 ft.
.SAT NIGHT...NE winds 15 to 20 kt, shifting to E to SE late. Seas
4 to 6 ft.
.SUN...W of 90W, SE winds 15 to 20 kt, becoming N to NE 10 kt in
the afternoon. E of 90W, E winds 15 to 20 kt. Seas 3 to 5 ft.
.SUN NIGHT...NE winds 15 to 20 kt, becoming E to SE 10 to 15 kt
late. Seas 3 to 5 ft.
.MON...E winds 10 to 15 kt. Seas 3 to 5 ft.
.MON NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft.
.TUE...SE winds 10 to 15 kt, shifting to NE to E in the
afternoon. Seas 3 to 5 ft.
.TUE NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft.
$$
Forecaster Aguirre
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