Offshore Marine Forecast
000
FZNT24 KNHC 171923
OFFNT4
Offshore Waters Forecast for the Gulf of America
NWS National Hurricane Center Miami, FL
323 PM EDT Thu Sep 17 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.
GMZ001-180730-
Synopsis for the Gulf of America
323 PM EDT Thu Sep 17 2026
.SYNOPSIS...The pressure gradient between high pressure over the
southeastern U.S. and a weakening frontal boundary over the SE Gulf
supports fresh NE to E winds and moderate seas over the NE and
north-central Gulf. These marine conditions will spread westward
over the remainder of the northern Gulf waters through tonight
before improving Fri into Sat. Meanwhile, a rather broad upper-
level low will move towards Florida from the western Atlantic on
Fri, and into the NE Gulf on Sat. This feature will lead to
increasing shower and thunderstorm activity over Florida, and then
over the eastern and central Gulf waters.
$$
GMZ040-180730-
NW Gulf of America including Stetson Bank-
323 PM EDT Thu Sep 17 2026
.TONIGHT...E winds 15 to 20 kt. Seas 4 to 6 ft.
.FRI...E winds 10 to 15 kt. Seas 3 to 5 ft. Scattered showers and
isolated tstms.
.FRI NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft.
.SAT...E winds 10 kt. Seas 3 to 5 ft.
.SAT NIGHT...E to SE winds 10 to 15 kt. Seas 2 to 4 ft.
.SUN...Variable winds less than 5 kt. Seas 3 ft or less.
.SUN NIGHT...SE winds 10 kt. Seas 3 ft or less.
.MON...Variable winds less than 5 kt. Seas 3 ft or less.
.MON NIGHT...E to SE winds 10 kt. Seas 3 ft or less.
.TUE...Variable winds less than 5 kt, becoming NE to E 10 kt in
the afternoon. Seas 3 ft or less.
.TUE NIGHT...E to SE winds 10 to 15 kt. Seas 3 ft or less.
$$
GMZ041-180730-
SW Louisiana Offshore Waters including Flower Garden Bank Marine
Sanctuary-
323 PM EDT Thu Sep 17 2026
.TONIGHT...E winds 15 to 20 kt. Seas 4 to 6 ft.
.FRI...E winds 10 to 15 kt. Seas 4 to 6 ft.
.FRI NIGHT...E winds 10 to 15 kt. Seas 3 to 5 ft.
.SAT...E winds 10 kt. Seas 3 to 5 ft.
.SAT NIGHT...E to SE winds 10 to 15 kt. Seas 2 to 4 ft.
.SUN...Variable winds less than 5 kt, becoming E 10 kt in the
afternoon. Seas 3 ft or less.
.SUN NIGHT...E to SE winds 10 kt. Seas 3 ft or less.
.MON...Variable winds less than 5 kt. Seas 3 ft or less.
.MON NIGHT...E winds 10 kt. Seas 3 ft or less.
.TUE...Variable winds less than 5 kt, becoming NE to E 10 kt in
the afternoon. Seas 3 ft or less.
.TUE NIGHT...E winds 10 to 15 kt. Seas 3 ft or less.
$$
GMZ056-180730-
N Central Gulf of America Offshore Waters-
323 PM EDT Thu Sep 17 2026
.TONIGHT...E winds 15 to 20 kt. Seas 5 to 7 ft.
.FRI...NE to E winds 15 kt. Seas 5 to 7 ft.
.FRI NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft.
.SAT...E winds 10 kt. Seas 2 to 4 ft.
.SAT NIGHT...E winds 10 to 15 kt. Seas 3 ft or less.
.SUN...Variable winds less than 5 kt, becoming NE to E 10 kt in
the afternoon. Seas 3 ft or less.
.SUN NIGHT...E winds 10 kt. Seas 3 ft or less.
.MON...Variable winds less than 5 kt. Seas 3 ft or less.
.MON NIGHT...E winds 10 kt. Seas 3 ft or less.
.TUE...Variable winds less than 5 kt, becoming NE to E 10 kt in
the afternoon. Seas 3 ft or less.
.TUE NIGHT...E winds 10 kt. Seas 3 ft or less.
$$
GMZ057-180730-
NE Gulf of America N of 26N E of 87W-
323 PM EDT Thu Sep 17 2026
.TONIGHT...NE to E winds 15 to 20 kt. Seas 4 to 6 ft.
.FRI...NE to E winds 15 kt. Seas 3 to 5 ft.
.FRI NIGHT...NE to E winds 10 to 15 kt. Seas 3 to 5 ft.
.SAT...NE to E winds 10 kt. Seas 2 to 4 ft.
.SAT NIGHT...W of 85W, NE to E winds 10 kt. E of 85W, variable
winds less than 5 kt, becoming NE to E 10 kt late. Seas
3 ft or less.
.SUN...Variable winds less than 5 kt. Seas 3 ft or less.
.SUN NIGHT...Variable winds less than 5 kt. Seas 3 ft or less.
.MON...Variable winds less than 5 kt. Seas 3 ft or less.
.MON NIGHT...Variable winds less than 5 kt. Seas 3 ft or less.
.TUE...Variable winds less than 5 kt. Seas 3 ft or less.
.TUE NIGHT...NE to E winds 10 kt. Seas 3 ft or less.
$$
GMZ058-180730-
W Central Gulf of America from 22N to 26N W of 94W-
323 PM EDT Thu Sep 17 2026
.TONIGHT...NE to E winds 10 kt. Seas 3 to 5 ft. Scattered showers
and isolated tstms.
.FRI...W of 96W, variable winds less than 5 kt, becoming N to NE
10 kt in the afternoon. E of 96W, NE to E winds 10 kt. Seas 3 to
5 ft. Scattered showers and isolated tstms.
.FRI NIGHT...NE to E winds 10 kt. Seas 3 to 5 ft.
.SAT...W of 96W, variable winds less than 5 kt. E of 96W, E to SE
winds 10 kt in the morning, becoming variable less than 5 kt.
Seas 3 to 5 ft in NE to E swell.
.SAT NIGHT...E to SE winds 10 kt. Seas 3 ft or less.
.SUN...Variable winds less than 5 kt. Seas 3 ft or less.
.SUN NIGHT...E to SE winds 10 kt. Seas 3 ft or less.
.MON...SE winds 10 kt W of 96W, and variable less than 5 kt E of
96W. Seas 3 ft or less.
.MON NIGHT...E winds 10 kt. Seas 3 ft or less.
.TUE...Variable winds less than 5 kt, becoming E 10 kt in the
afternoon. Seas 3 ft or less.
.TUE NIGHT...E winds 10 to 15 kt. Seas 3 ft or less.
$$
GMZ045-180730-
W Central Gulf of America from 22N to 26N between 91W and 94W-
323 PM EDT Thu Sep 17 2026
.TONIGHT...NE to E winds 10 to 15 kt. Seas 4 to 6 ft. Scattered
showers and isolated tstms.
.FRI...S of 24N, E winds 10 kt in the morning, becoming variable
less than 5 kt. N of 24N, E winds 10 to 15 kt. Seas 4 to 6 ft.
Scattered showers and isolated tstms.
.FRI NIGHT...NE to E winds 10 to 15 kt. Seas 3 to 5 ft.
.SAT...S of 24N, SE winds 10 kt in the morning, becoming variable
less than 5 kt. N of 24N, E winds 10 kt. Seas 3 to 5 ft.
Scattered showers and isolated tstms.
.SAT NIGHT...S of 24N, variable winds less than 5 kt, becoming E
10 kt late. N of 24N, E winds 10 to 15 kt. Seas 3 ft or
less.
.SUN...Variable winds less than 5 kt. Seas 3 ft or less.
.SUN NIGHT...E winds 10 kt. Seas 3 ft or less.
.MON...S of 24N, variable winds less than 5 kt. N of 24N,
variable winds less than 5 kt, becoming NE to E 10 kt in the
afternoon. Seas 3 ft or less.
.MON NIGHT...NE to E winds 10 kt. Seas 3 ft or less.
.TUE...S of 24N, variable winds less than 5 kt. N of 24N,
variable winds less than 5 kt, becoming NE to E 10 kt in the
afternoon. Seas 3 ft or less.
.TUE NIGHT...E winds 10 to 15 kt. Seas 3 ft or less.
$$
GMZ046-180730-
Central Gulf of America from 22N to 26N between 87W and 91W-
323 PM EDT Thu Sep 17 2026
.TONIGHT...NE to E winds 10 to 15 kt. Seas 4 to 6 ft.
.FRI...E winds 10 to 15 kt. Seas 4 to 6 ft. Scattered showers and
isolated tstms.
.FRI NIGHT...NE to E winds 10 to 15 kt. Seas 3 to 5 ft.
.SAT...S of 24N, E to SE winds 10 kt in the morning, becoming
variable less than 5 kt. N of 24N, E winds 10 kt. Seas 2 to 4 ft.
Scattered showers and isolated tstms.
.SAT NIGHT...NE to E winds 10 kt. Seas 3 ft or less.
.SUN...S of 24N, variable winds less than 5 kt. N of 24N,
variable winds less than 5 kt, becoming NE 10 kt in the
afternoon. Seas 3 ft or less.
.SUN NIGHT...E winds 10 kt. Seas 3 ft or less.
.MON...Variable winds less than 5 kt. Seas 3 ft or less.
.MON NIGHT...E winds 10 kt. Seas 3 ft or less.
.TUE...E to SE winds 10 kt. Seas 3 ft or less.
.TUE NIGHT...E winds 10 to 15 kt. Seas 3 ft or less.
$$
GMZ047-180730-
SE Gulf of America from 22N to 26N E of 87W including Straits of
Florida-
323 PM EDT Thu Sep 17 2026
.TONIGHT...NE to E winds 10 to 15 kt. Seas 4 to 6 ft. Scattered
showers and isolated tstms.
.FRI...E winds 10 to 15 kt. Seas 3 to 5 ft. Scattered showers and
isolated tstms.
.FRI NIGHT...NE to E winds 10 kt. Seas 3 to 5 ft. Scattered
showers and isolated tstms.
.SAT...Variable winds less than 5 kt S of 24N, and E 10 kt N of
24N. Seas 2 to 4 ft. Scattered showers and isolated tstms.
.SAT NIGHT...Variable winds less than 5 kt S of 24N, and NE to E
10 kt N of 24N. Seas 3 ft or less.
.SUN...Variable winds less than 5 kt. Seas 3 ft or less.
.SUN NIGHT...Variable winds less than 5 kt, becoming SE 10 kt
late. Seas 3 ft or less.
.MON...Variable winds less than 5 kt. Seas 3 ft or less.
.MON NIGHT...Variable winds less than 5 kt, becoming SE 10 kt
late. Seas 3 ft or less.
.TUE...SE winds 10 kt in the morning, becoming variable less than
5 kt. Seas 3 ft or less.
.TUE NIGHT...NE to E winds 15 to 20 kt. Seas 3 ft or less,
building to 3 to 5 ft late.
$$
GMZ048-180730-
SW Gulf of America S of 22N W of 94W-
323 PM EDT Thu Sep 17 2026
.TONIGHT...N to NE winds 10 kt. Seas 2 to 4 ft. Scattered showers
and isolated tstms.
.FRI...S of 21N W of 95W, NW to N winds 10 kt. Elsewhere,
variable winds less than 5 kt, becoming NW 10 kt in the
afternoon. Seas 3 ft or less.
.FRI NIGHT...N winds 10 kt in the evening, becoming variable less
than 5 kt. Seas 3 ft or less. Scattered showers and isolated
tstms.
.SAT...Variable winds less than 5 kt. Seas 3 ft or less.
.SAT NIGHT...S of 21N W of 95W, NE winds 10 kt, shifting to SE to
S late. Elsewhere, N to NE winds 10 kt in the evening,
becoming variable less than 5 kt. Seas 3 ft or less.
.SUN...Variable winds less than 5 kt. Seas 3 ft or less.
.SUN NIGHT...E winds 10 kt. Seas 3 ft or less.
.MON...Variable winds less than 5 kt. Seas 3 ft or less.
.MON NIGHT...NE to E winds 10 kt. Seas 3 ft or less.
.TUE...S of 21N W of 95W, variable winds less than 5 kt.
Elsewhere, E winds 10 kt in the morning, becoming variable less
than 5 kt. Seas 3 ft or less.
.TUE NIGHT...NE to E winds 10 kt. Seas 3 ft or less.
$$
GMZ049-180730-
Central Bay of Campeche-
323 PM EDT Thu Sep 17 2026
.TONIGHT...NE winds 10 to 15 kt. Seas 3 ft or less. Scattered
showers and isolated tstms.
.FRI...S of 20N, N to NE winds 10 kt. N of 20N, NE to E winds
10 kt in the morning, becoming variable less than 5 kt. Seas 3 ft
or less.
.FRI NIGHT...N to NE winds 10 kt. Seas 3 ft or less. Scattered
showers and isolated tstms.
.SAT...Variable winds less than 5 kt. Seas 3 ft or less.
.SAT NIGHT...N to NE winds 10 kt. Seas 3 ft or less.
.SUN...Variable winds less than 5 kt. Seas 3 ft or less.
.SUN NIGHT...NE winds 10 kt. Seas 3 ft or less.
.MON...Variable winds less than 5 kt. Seas 3 ft or less.
.MON NIGHT...NE winds 10 kt. Seas 3 ft or less.
.TUE...E winds 10 kt in the morning, becoming variable less than
5 kt. Seas 3 ft or less.
.TUE NIGHT...NE winds 10 to 15 kt. Seas 3 ft or less.
$$
GMZ050-180730-
E Bay of Campeche including Campeche Bank-
323 PM EDT Thu Sep 17 2026
.TONIGHT...NE winds 10 to 15 kt. Seas 3 ft or less. Scattered
showers and isolated tstms.
.FRI...W of 90W, E to SE winds 10 kt in the morning, becoming
variable less than 5 kt. E of 90W, SE winds 10 kt, shifting to NE
in the afternoon. Seas 3 ft or less.
.FRI NIGHT...N winds 10 to 15 kt, shifting to NE to E late. Seas
3 ft or less. Scattered showers and isolated
tstms.
.SAT...W of 90W, E to SE winds 10 kt in the morning, becoming
variable less than 5 kt. E of 90W, SE to S winds 10 kt, shifting
to N to NE in the afternoon. Seas 3 ft or less.
.SAT NIGHT...N winds 10 to 15 kt, shifting to E late.
Seas 3 ft or less.
.SUN...Variable winds less than 5 kt, becoming N 10 kt in the
afternoon. Seas 3 ft or less.
.SUN NIGHT...NE winds 10 kt, shifting to E to SE late.
Seas 3 ft or less.
.MON...SE winds 10 kt, shifting to NW to N in the afternoon. Seas
3 ft or less.
.MON NIGHT...NE winds 10 kt, shifting to E late. Seas
3 ft or less.
.TUE...E to SE winds 10 kt, shifting to N to NE in the afternoon.
Seas 3 ft or less.
.TUE NIGHT...NE to E winds 10 to 15 kt. Seas 3 ft or less.
$$
Forecaster GR
