Offshore Marine Forecast


000
FZNT24 KNHC 282101
OFFNT4

Offshore Waters Forecast for the Gulf of Mexico
NWS National Hurricane Center Miami, FL
501 PM EDT Mon Sep 28 2020

Offshore Waters Forecast for the Gulf of Mexico

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.

GMZ001-290915-
Synopsis for the Gulf of Mexico
501 PM EDT Mon Sep 28 2020

.SYNOPSIS...A strong cold front extends from southwestern
Louisiana to inland Texas near Brownsville. The front will reach
the southeastern Gulf waters Wed and the Straits of Florida by Wed
evening. In the wake of the front, strong northerly winds are
expected in the western half of the basin, with gale force winds
expected west of 95W on Tue. A secondary front will drop southward
to the northern Gulf early on Fri and reach the far southwestern
Gulf by Fri evening. Strong high pressure will build in behind
this front. The pressure gradient between the front and broad low
pressure that is expected to form over the western Caribbean by
the end of the week is expected to freshen the northeast winds
over most of the southeastern Gulf by the end of the week. These
winds may reach strong speeds on Sat and Sat night along with
building seas.


$$

GMZ011-290915-
NW Gulf including Stetson Bank-
501 PM EDT Mon Sep 28 2020

.TONIGHT...N to NE winds 20 to 25 kt. Seas 5 to 7 ft. Scattered
showers and isolated thunderstorms.
.TUE...N to NE winds 20 to 25 kt. Seas 7 to 10 ft.
.TUE NIGHT...N winds 15 to 20 kt. Seas 5 to 7 ft.
.WED...N winds 10 kt in the morning, becoming variable less than
5 kt. Seas 3 to 5 ft mixed NE and SE swell.
.WED NIGHT...Variable winds less than 5 kt. Seas 2 to 3 ft in NE
swell.
.THU...NE winds 10 kt. Seas 2 to 3 ft.
.THU NIGHT...NE to E winds 10 kt. Seas 3 to 4 ft.
.FRI...NE 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 5 ft.

$$

GMZ013-290915-
N Central Gulf including Flower Garden Banks Marine Sanctuary-
501 PM EDT Mon Sep 28 2020

.TONIGHT...W of 90W, N winds 20 to 25 kt. Elsewhere, SW winds
10 kt, shifting to W to NW late. Seas 3 to 5 ft, building to 6 to
8 ft late. Scattered showers and isolated thunderstorms.
.TUE...N winds 20 to 25 kt W of 90W, and NW to N 15 to 20 kt
elsewhere. Seas 6 to 9 ft in SE to S swell. Numerous showers
and scattered thunderstorms.
.TUE NIGHT...N winds 15 to 20 kt. Seas 6 to 8 ft.
.WED...N winds 15 to 20 kt. Seas 5 to 7 ft.
.WED NIGHT...N to NE winds 10 to 15 kt. Seas 3 to 4 ft.
.THU...NE winds 10 to 15 kt. Seas 3 to 4 ft.
.THU NIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft.
.FRI...NE winds 15 to 20 kt. Seas 4 to 6 ft.
.FRI NIGHT...NE winds 15 to 20 kt. Seas 4 to 6 ft.
.SAT...NE winds 15 to 20 kt. Seas 4 to 6 ft.
.SAT NIGHT...NE to E winds 15 to 20 kt. Seas 4 to 6 ft.

$$

GMZ015-290915-
NE Gulf N of 25N E of 87W-
501 PM EDT Mon Sep 28 2020

.TONIGHT...Variable winds less than 5 kt S of 27N, and SW 10 kt
elsewhere. Seas 2 to 3 ft. Scattered showers and isolated
thunderstorms.
.TUE...SW winds 10 to 15 kt. Seas 3 to 4 ft. Scattered showers
and thunderstorms.
.TUE NIGHT...NW to N winds 15 to 20 kt. Seas 5 to 7 ft.
Scattered showers and isolated thunderstorms.
.WED...N winds 15 to 20 kt. Seas 5 to 7 ft.
.WED NIGHT...N to NE winds 10 to 15 kt. Seas 3 to 5 ft.
.THU...NE winds 10 to 15 kt. Seas 3 to 5 ft.
.THU NIGHT...N to NE winds 10 to 15 kt. Seas 3 to 5 ft.
.FRI...NE winds 15 to 20 kt. Seas 4 to 6 ft.
.FRI NIGHT...NE winds 15 to 20 kt. Seas 4 to 6 ft.
.SAT...NE winds 15 to 20 kt. Seas 4 to 6 ft.
.SAT NIGHT...NE to E winds 15 to 20 kt. Seas 4 to 6 ft.

$$

GMZ017-290915-
W Central Gulf from 22N to 26N W of 94W-
501 PM EDT Mon Sep 28 2020

...GALE WARNING S OF 23N W OF 97W...

.TONIGHT...N winds 20 to 30 kt, except S of 23N W of 97W
increasing to 30 to 35 kt late. Seas 3 to 5 ft, except S of 23N W
of 97W building to 9 to 14 ft late. Scattered showers and
isolated thunderstorms.
.TUE...N winds 20 to 30 kt, except S of 23N W of 97W N winds 30 to
35 kt diminishing to 25 to 30 kt in the afternoon. Seas 8 to 12
ft, except S of 23N W of 97W 10 to 14 ft.
.TUE NIGHT...N winds 20 to 25 kt. Seas 8 to 12 ft..highest S part.
.WED...N winds 10 to 15 kt. Seas 4 to 6 ft.
.WED NIGHT...NE winds 10 kt in the evening, becoming variable
less than 5 kt. Seas 3 to 4 ft.
.THU...Variable winds less than 5 kt, becoming N 10 kt in the
afternoon. Seas 3 to 4 ft.
.THU NIGHT...NE winds 10 kt. Seas 3 to 4 ft.
.FRI...N to NE winds 10 to 15 kt. Seas 3 to 4 ft.
.FRI NIGHT...NE to E winds 10 to 15 kt. Seas 3 to 4 ft.
.SAT...NE winds 10 to 15 kt. Seas 4 to 6 ft.
.SAT NIGHT...NE to E winds 10 to 15 kt. Seas 5 to 7 ft.

$$

GMZ019-290915-
Central Gulf from 22N to 26N between 87W and 94W-
501 PM EDT Mon Sep 28 2020

.TONIGHT...NE to E winds 10 to 15 kt. Seas 3 to 4 ft. Winds and
seas higher in and near scattered showers and thunderstorms.
.TUE...E winds 20 to 25 kt, shifting to NW to N in the afternoon.
Seas 7 to 10 ft. Scattered showers and isolated thunderstorms.
.TUE NIGHT...N winds 20 to 25 kt. Seas 7 to 11 ft.
.WED...N to NE winds 15 to 20 kt. Seas 6 to 9 ft in N swell.
.WED NIGHT...N to NE winds 15 to 20 kt. Seas 4 to 6 ft.
.THU...N to NE winds 10 to 15 kt. Seas 3 to 5 ft.
.THU NIGHT...NE winds 15 to 20 kt. Seas 4 to 6 ft.
.FRI...NE winds 15 to 20 kt. Seas 4 to 6 ft.
.FRI NIGHT...NE winds 20 to 25 kt. Seas 6 to 8 ft.
.SAT...NE winds 20 to 25 kt. Seas 6 to 9 ft.
.SAT NIGHT...NE winds 20 to 25 kt. Seas 7 to 10 ft.

$$

GMZ021-290915-
E Gulf from 22N to 25N E of 87W including Straits of Florida-
501 PM EDT Mon Sep 28 2020

.TONIGHT...NE to E winds 10 kt. Seas 2 to 3 ft. Scattered
thunderstorms and isolated thunderstorms.
.TUE...E to SE winds 10 kt, shifting to S in the afternoon. Seas
2 to 3 ft. Scattered showers and isolated thunderstorms.
.TUE NIGHT...Straits of Florida, variable winds less than 5 kt,
becoming N 10 kt late. Elsewhere, NW winds 10 to 15 kt, shifting
to N late. Seas 2 to 3 ft, building to 3 to 4 ft late. Scattered
showers and isolated thunderstorms.
.WED...NE winds 10 to 15 kt Straits of Florida, and N to NE 15 to
20 kt elsewhere. Seas 6 to 8 ft in NW to N swell. Scattered
showers and isolated thunderstorms.
.WED NIGHT...N to NE winds 15 to 20 kt. Seas 4 to 6 ft.
.THU...NE winds 10 to 15 kt. Seas 4 to 6 ft.
.THU NIGHT...NE winds 15 to 20 kt. Seas 4 to 6 ft.
.FRI...NE winds 15 to 20 kt. Seas 4 to 6 ft.
.FRI NIGHT...NE to E winds 20 to 25 kt. Seas 4 to 6 ft.
.SAT...NE to E winds 15 to 20 kt. Seas 5 to 8 ft.
.SAT NIGHT...NE to E winds 20 to 25 kt. Seas 5 to 8 ft.

$$

GMZ023-290915-
SW Gulf S of 22N W of 94W-
501 PM EDT Mon Sep 28 2020

...GALE WARNING S OF 21N W OF 95W...

.TONIGHT...NE winds 10 kt, except becoming N 20 to 25 kt behind
front late. Seas 3 to 4 ft, except building to 8 to 11 ft behind
front late. Scattered thunderstorms and isolated thunderstorms.
.TUE...S of 21N W of 95W, NW winds 20 to 30 kt, increasing to
30 to 40 kt in the afternoon. Elsewhere, N winds 20 to 30 kt.
Seas 9 to 14 ft. Numerous showers and scattered thunderstorms.
.TUE NIGHT...S of 21N W of 95W, NW to N winds 30 to 40 kt,
diminishing to 20 to 30 kt late. Elsewhere, N winds 25 to 30 kt.
Seas 12 to 18 ft in N to NE swell. Scattered thunderstorms.
.WED...NW to N winds 20 to 25 kt. Seas 9 to 13 ft in N to NE
swell.
.WED NIGHT...N winds 15 to 20 kt. Seas 6 to 8 ft.
.THU...NW to N winds 15 to 20 kt. Seas 4 to 6 ft.
.THU NIGHT...N winds 15 to 20 kt. Seas 3 to 5 ft.
.FRI...NW to N winds 20 to 25 kt. Seas 3 to 5 ft.
.FRI NIGHT...N winds 15 to 20 kt. Seas 4 to 6 ft.
.SAT...N winds 15 to 20 kt. Seas 5 to 7 ft.
.SAT NIGHT...N winds 15 to 20 kt. Seas 6 to 8 ft.

$$

GMZ025-290915-
E Bay of Campeche including Campeche Bank-
501 PM EDT Mon Sep 28 2020

.TONIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. Scattered
showers and isolated thunderstorms.
.TUE...Within 60 nm of coast of Campeche, SE winds 10 kt in the
morning, becoming variable less than 5 kt. Elsewhere, NE to E
winds 10 kt, becoming NW 15 to 20 kt in the afternoon. Seas
3 to 4 ft, building to 5 to 7 ft in the afternoon. Scattered
showers and isolated thunderstorms.
.TUE NIGHT...N winds 20 to 25 kt. Seas 9 to 13 ft in NW swell.
Scattered showers and scattered thunderstorms.
.WED...N to NE winds 20 to 25 kt diminishing to 15 to 20 kt in the
afternoon, except S of 20N N 25 to 30 kt diminishing to 20 to 25
kt in the afternoon. Seas 9 to 13 ft in N to NE swell, except
10 to 14 ft W of 93W subsiding to 8 to 12 ft in the afternoon.
Numerous showers and scattered thunderstorms.
.WED NIGHT...N to NE winds 15 to 20 kt. Seas 6 to 8 ft.
.THU...N to NE winds 15 to 20 kt. Seas 4 to 6 ft.
.THU NIGHT...N to NE winds 15 to 20 kt. Seas 4 to 6 ft.
.FRI...N to NE winds 15 to 20 kt. Seas 3 to 5 ft.
.FRI NIGHT...N to NE winds 15 to 20 kt. Seas 4 to 6 ft.
.SAT...NE winds 20 to 25 kt. Seas 5 to 7 ft S of 20N and
7 to 9 ft N of 20N.
.SAT NIGHT...N to NE winds 20 to 25 kt. Seas 7 to 10 ft,

$$

Forecaster Aguirre