NHC Gulf of America Offshore Waters Forecast
Tue Apr 21 3:31 am
000
FZNT24 KNHC 210730
OFFNT4
Offshore Waters Forecast for the Gulf of America
NWS National Hurricane Center Miami, FL
330 AM EDT Tue Apr 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.
GMZ001-211930-
Synopsis for the Gulf of America
330 AM EDT Tue Apr 21 2026
.SYNOPSIS...A cold front extends across the Florida Straits
westward to near 24N85W, then dissipating front to 22N93W. Fresh
to locally strong NE winds and moderate to rough seas will
prevail N of the front today. The western portion of this boundary
will gradually dissipate over the central and western Gulf today,
while the eastern portion will move across Cuba and the Yucatan
Channel before stalling along about 21N Wed and dissipating early
Thu. Gentle to moderate southeasterly winds will return to the
Gulf on Thu.
$$
GMZ040-211930-
NW Gulf of America including Stetson Bank-
330 AM EDT Tue Apr 21 2026
.TODAY...SE winds 15 to 20 kt. Seas 5 to 7 ft.
.TONIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft.
.WED...SE winds 10 to 15 kt. Seas 4 to 6 ft in E swell.
.WED NIGHT...E to SE winds 10 to 15 kt. Seas 4 to 6 ft.
.THU...SE winds 10 to 15 kt. Seas 3 to 5 ft.
.THU NIGHT...SE winds 15 kt. Seas 3 to 5 ft.
.FRI...SE to S winds 10 to 15 kt. Seas 3 to 5 ft.
.FRI NIGHT...SE winds 10 to 15 kt. Seas 3 to 5 ft.
.SAT...SE winds 10 to 15 kt. Seas 2 to 4 ft.
.SAT NIGHT...SE winds 10 to 15 kt. Seas 2 to 4 ft.
$$
GMZ041-211930-
SW Louisiana Offshore Waters including Flower Garden Bank Marine
Sanctuary-
330 AM EDT Tue Apr 21 2026
.TODAY...E to SE winds 15 to 20 kt. Seas 5 to 7 ft in E swell.
.TONIGHT...E to SE winds 15 to 20 kt. Seas 5 to 7 ft in E swell.
.WED...E to SE winds 10 to 15 kt. Seas 5 to 7 ft. Scattered
showers and isolated tstms.
.WED NIGHT...E to SE winds 10 to 15 kt. Seas 5 to 7 ft.
.THU...SE winds 10 kt. Seas 5 to 7 ft in E to SE swell.
.THU NIGHT...SE winds 10 to 15 kt. Seas 4 to 6 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 2 to 4 ft.
.SAT NIGHT...SE winds 10 to 15 kt. Seas 2 to 4 ft.
$$
GMZ056-211930-
N Central Gulf of America Offshore Waters-
330 AM EDT Tue Apr 21 2026
.TODAY...E winds 20 kt. Seas 6 to 9 ft in E swell.
.TONIGHT...E to SE winds 15 to 20 kt. Seas 6 to 8 ft in E to SE
swell.
.WED...E to SE winds 15 to 20 kt. Seas 6 to 8 ft. Scattered
showers.
.WED NIGHT...E to SE winds 10 to 15 kt. Seas 6 to 8 ft in E to SE
swell.
.THU...E to SE winds 10 to 15 kt. Seas 5 to 7 ft.
.THU NIGHT...SE
FZNT24 KNHC 210730
OFFNT4
Offshore Waters Forecast for the Gulf of America
NWS National Hurricane Center Miami, FL
330 AM EDT Tue Apr 21 2026
Offshore Waters Forecast for the Gulf of America
Seas given as significant wave height, which is the average
height of the highest 1/3 of the waves. Individual waves may be
more than twice the significant wave height.
GMZ001-211930-
Synopsis for the Gulf of America
330 AM EDT Tue Apr 21 2026
.SYNOPSIS...A cold front extends across the Florida Straits
westward to near 24N85W, then dissipating front to 22N93W. Fresh
to locally strong NE winds and moderate to rough seas will
prevail N of the front today. The western portion of this boundary
will gradually dissipate over the central and western Gulf today,
while the eastern portion will move across Cuba and the Yucatan
Channel before stalling along about 21N Wed and dissipating early
Thu. Gentle to moderate southeasterly winds will return to the
Gulf on Thu.
$$
GMZ040-211930-
NW Gulf of America including Stetson Bank-
330 AM EDT Tue Apr 21 2026
.TODAY...SE winds 15 to 20 kt. Seas 5 to 7 ft.
.TONIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft.
.WED...SE winds 10 to 15 kt. Seas 4 to 6 ft in E swell.
.WED NIGHT...E to SE winds 10 to 15 kt. Seas 4 to 6 ft.
.THU...SE winds 10 to 15 kt. Seas 3 to 5 ft.
.THU NIGHT...SE winds 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 winds 10 to 15 kt. Seas 2 to 4 ft.
.SAT NIGHT...SE winds 10 to 15 kt. Seas 2 to 4 ft.
$$
GMZ041-211930-
SW Louisiana Offshore Waters including Flower Garden Bank Marine
Sanctuary-
330 AM EDT Tue Apr 21 2026
.TODAY...E to SE winds 15 to 20 kt. Seas 5 to 7 ft in E swell.
.TONIGHT...E to SE winds 15 to 20 kt. Seas 5 to 7 ft in E swell.
.WED...E to SE winds 10 to 15 kt. Seas 5 to 7 ft. Scattered
showers and isolated tstms.
.WED NIGHT...E to SE winds 10 to 15 kt. Seas 5 to 7 ft.
.THU...SE winds 10 kt. Seas 5 to 7 ft in E to SE swell.
.THU NIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft.
.FRI...SE to S winds 10 to 15 kt. Seas 3 to 5 ft.
.FRI NIGHT...SE winds 10 to 15 kt. Seas 3 to 5 ft.
.SAT...SE to S winds 10 kt. Seas 2 to 4 ft.
.SAT NIGHT...SE winds 10 to 15 kt. Seas 2 to 4 ft.
$$
GMZ056-211930-
N Central Gulf of America Offshore Waters-
330 AM EDT Tue Apr 21 2026
.TODAY...E winds 20 kt. Seas 6 to 9 ft in E swell.
.TONIGHT...E to SE winds 15 to 20 kt. Seas 6 to 8 ft in E to SE
swell.
.WED...E to SE winds 15 to 20 kt. Seas 6 to 8 ft. Scattered
showers.
.WED NIGHT...E to SE winds 10 to 15 kt. Seas 6 to 8 ft in E to SE
swell.
.THU...E to SE winds 10 to 15 kt. Seas 5 to 7 ft.
.THU NIGHT...SE