180
FZUS54 KLCH 170809
CWFLCH

Coastal Waters Forecast
National Weather Service Lake Charles LA
309 AM CDT Thu Sep 17 2026

Coastal waters from the Lower Atchafalaya River LA to High
Island TX out 60 nautical miles including Sabine and
Calcasieu Lakes and Vermilion and Cote Blanche Bays

Seas are provided as a range of the average height of the
highest one third of the waves, along with the occasional
height of the average highest ten percent of the waves.

GMZ400-172100-
309 AM CDT Thu Sep 17 2026

.Synopsis for Lower Atchafalaya River LA to High Island TX out
60 NM including Sabine and Calcasieu Lakes and Vermilion and Cote
Blanche Bays...

A fairly tight pressure gradient will keep easterly winds elevated
through this evening. Winds will slowly decrease into Friday and
through weekend as high pressure moves off the Atlantic coast. As
per recent forecast, the Small Craft Advisory has been adjusted to
continue offshore east of Cameron, LA until 1AM CDT Friday where
offshore winds / seas will remain slower to ease and abate.

$$

GMZ430-172100-
Sabine Lake-
309 AM CDT Thu Sep 17 2026

.TODAY...East winds 10 to 15 knots with gusts up to 20 knots.
Lake waters choppy.
.TONIGHT...Southeast winds 5 to 10 knots. Lake waters light chop.
.FRIDAY...East winds 5 to 10 knots. Lake waters light chop.
.FRIDAY NIGHT...Southeast winds 5 to 10 knots, diminishing to
around 5 knots after midnight. Lake waters light chop.
.SATURDAY...East winds 5 to 10 knots. Lake waters light chop.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots, becoming south
after midnight. Lake waters light chop.
.SUNDAY...East winds around 5 knots. Lake waters smooth. A slight
chance of showers and thunderstorms in the afternoon.
.SUNDAY NIGHT...South winds around 5 knots. Lake waters smooth.
.MONDAY...Northeast winds around 5 knots, becoming southeast in
the afternoon. Lake waters smooth. A chance of showers and
thunderstorms.
.MONDAY NIGHT...Southeast winds around 5 knots, becoming
northeast after midnight. Lake waters smooth.

Winds and waves higher in and near thunderstorms.

$$

GMZ432-172100-
Calcasieu Lake-
309 AM CDT Thu Sep 17 2026

.TODAY...East winds 10 to 15 knots with gusts up to 20 knots.
Lake waters choppy.
.TONIGHT...East winds 5 to 10 knots. Lake waters light chop.
.FRIDAY...East winds 5 to 10 knots. Lake waters light chop.
.FRIDAY NIGHT...Southeast winds 5 to 10 knots, diminishing to
around 5 knots after midnight. Lake waters light chop.
.SATURDAY...Northeast winds 5 to 10 knots, becoming southeast in
the afternoon. Lake waters light chop.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots, becoming south
after midnight. Lake waters light chop.
.SUNDAY...East winds around 5 knots, becoming southeast in the
afternoon. Lake waters light chop.
.SUNDAY NIGHT...South winds 5 to 10 knots, becoming southeast
after midnight. Lake waters light chop.
.MONDAY...Northeast winds around 5 knots, becoming southeast
around 5 knots in the afternoon. Lake waters smooth. A slight
chance of showers and thunderstorms in the morning, then a chance
of showers and thunderstorms in the afternoon.
.MONDAY NIGHT...Southeast winds around 5 knots, becoming
northeast around 5 knots after midnight. Lake waters smooth.

Winds and waves higher in and near thunderstorms.

$$

GMZ435-172100-
Vermilion and West Cote Blanche Bays-
309 AM CDT Thu Sep 17 2026

...SMALL CRAFT EXERCISE CAUTION IN EFFECT THROUGH LATE TONIGHT...

.TODAY...East winds 10 to 15 knots. Bay waters choppy.
.TONIGHT...East winds 10 to 15 knots. Bay waters choppy.
.FRIDAY...East winds 5 to 10 knots. Bay waters light chop.
.FRIDAY NIGHT...East winds 5 to 10 knots. Bay waters light chop.
.SATURDAY...Northeast winds 5 to 10 knots, becoming southeast in
the afternoon. Bay waters light chop.
.SATURDAY NIGHT...South winds 5 to 10 knots. Bay waters light
chop.
.SUNDAY...Northeast winds around 5 knots, becoming southeast in
the afternoon. Bay waters light chop. A chance of showers and
thunderstorms, mainly in the morning.
.SUNDAY NIGHT...Southeast winds around 5 knots. Bay waters
smooth.
.MONDAY...Northeast winds around 5 knots, becoming southeast in
the afternoon. Bay waters smooth. A chance of showers and
thunderstorms in the afternoon.
.MONDAY NIGHT...Southeast winds around 5 knots, becoming east
around 5 knots after midnight. Bay waters smooth.

Winds and waves higher in and near thunderstorms.

$$

GMZ436-172100-
Atchafalaya and East Cote Blanche Bays-
309 AM CDT Thu Sep 17 2026

...SMALL CRAFT EXERCISE CAUTION IN EFFECT THROUGH LATE TONIGHT...

.TODAY...East winds 10 to 15 knots. Bay waters choppy.
.TONIGHT...East winds 10 to 15 knots, diminishing to 5 to
10 knots after midnight. Bay waters choppy.
.FRIDAY...East winds 5 to 10 knots. Bay waters light chop.
.FRIDAY NIGHT...East winds 5 to 10 knots. Bay waters light chop.
.SATURDAY...Northeast winds 5 to 10 knots, becoming southeast in
the afternoon. Bay waters light chop.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters light
chop.
.SUNDAY...East winds around 5 knots, becoming southeast around
5 knots in the afternoon. Bay waters smooth. A chance of showers
and thunderstorms.
.SUNDAY NIGHT...Southeast winds around 5 knots. Bay waters
smooth.
.MONDAY...East winds around 5 knots. Bay waters smooth. A slight
chance of showers and thunderstorms in the morning, then a chance
of showers and thunderstorms in the afternoon.
.MONDAY NIGHT...East winds around 5 knots. Bay waters smooth. A
slight chance of showers and thunderstorms.

Winds and waves higher in and near thunderstorms.

$$

GMZ450-172100-
Coastal waters from Cameron LA to High Island TX out 20 NM-
309 AM CDT Thu Sep 17 2026

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING...
...SMALL CRAFT EXERCISE CAUTION IN EFFECT FROM THIS EVENING
THROUGH LATE TONIGHT...

.TODAY...East winds 15 to 20 knots with gusts up to 25 knots.
Seas 3 to 4 feet. Wave Detail: East 4 feet at 5 seconds. A chance
of showers and thunderstorms until late afternoon.
.TONIGHT...Southeast winds around 15 knots with gusts up to
20 knots. Seas 2 to 4 feet. Wave Detail: Southeast 3 feet at
5 seconds.
.FRIDAY...East winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 3 feet at 5 seconds.
.FRIDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to 3 feet.
Wave Detail: Southeast 2 feet at 5 seconds.
.SATURDAY...East winds around 10 knots. Seas around 2 feet. Wave
Detail: Southeast 2 feet at 5 seconds.
.SATURDAY NIGHT...Southeast winds 10 to 15 knots, becoming south
5 to 10 knots after midnight. Seas around 2 feet. Wave Detail:
Southeast 2 feet at 4 seconds.
.SUNDAY...Southeast winds 5 to 10 knots. Seas around 2 feet in
the morning, then 1 foot or less. A slight chance of showers and
thunderstorms in the morning.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 foot or
less.
.MONDAY...East winds around 5 knots. Seas 1 foot or less. A
chance of showers and thunderstorms, mainly in the morning.
.MONDAY NIGHT...East winds 5 to 10 knots. Seas 1 foot or less.

Winds and seas higher in and near thunderstorms.

$$

GMZ452-172100-
Coastal waters from Intracoastal City to Cameron LA out 20 NM-
309 AM CDT Thu Sep 17 2026

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.TODAY...East winds 15 to 20 knots. Seas 3 to 5 feet,
occasionally to 6 feet. Wave Detail: Southeast 4 feet at
5 seconds. A chance of showers and thunderstorms early this
morning.
.TONIGHT...East winds 15 to 20 knots with gusts up to 25 knots.
Seas 2 to 4 feet. Wave Detail: Southeast 4 feet at 5 seconds.
.FRIDAY...East winds 10 to 15 knots. Seas 2 to 4 feet. Wave
Detail: Southeast 3 feet at 5 seconds.
.FRIDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to 3 feet.
Wave Detail: Southeast 3 feet at 4 seconds.
.SATURDAY...East winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southeast 2 feet at 5 seconds.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet. Wave Detail: Southeast 2 feet at 4 seconds.
.SUNDAY...Southeast winds 5 to 10 knots. Seas around 2 feet in
the morning, then 1 foot or less. A slight chance of showers and
thunderstorms in the morning.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 foot or
less.
.MONDAY...East winds around 5 knots. Seas 1 foot or less. A
slight chance of showers and thunderstorms.
.MONDAY NIGHT...Southeast winds 5 to 10 knots, becoming east
after midnight. Seas 1 foot or less.

Winds and seas higher in and near thunderstorms.

$$

GMZ455-172100-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA out 20 NM-
309 AM CDT Thu Sep 17 2026

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.TODAY...East winds 15 to 20 knots with gusts up to 25 knots.
Seas 2 to 3 feet. Wave Detail: East 2 feet at 4 seconds.
.TONIGHT...East winds 15 to 20 knots with gusts up to 25 knots.
Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 4 seconds.
.FRIDAY...East winds 10 to 15 knots with gusts up to 20 knots.
Seas 2 to 3 feet. Wave Detail: East 2 feet at 3 seconds.
.FRIDAY NIGHT...East winds 10 to 15 knots with gusts up to
20 knots, diminishing to 5 to 10 knots after midnight. Seas
around 2 feet. Wave Detail: Southeast 2 feet at 3 seconds.
.SATURDAY...East winds 5 to 10 knots. Seas 1 to 2 feet. Wave
Detail: East 1 foot at 2 seconds.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 foot or
less. Wave Detail: Southeast 1 foot at 3 seconds.
.SUNDAY...East winds around 5 knots. Seas 1 foot or less. A
chance of showers and thunderstorms, mainly in the morning.
.SUNDAY NIGHT...Southeast winds around 5 knots. Seas 1 foot or
less.
.MONDAY...Northeast winds 5 to 10 knots, becoming east in the
afternoon. Seas 1 foot or less. A chance of showers and
thunderstorms.
.MONDAY NIGHT...East winds around 5 knots. Seas 1 foot or less. A
slight chance of showers and thunderstorms after midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ470-172100-
Coastal waters from Cameron LA to High Island TX from 20 to 60 NM-
309 AM CDT Thu Sep 17 2026

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING...
...SMALL CRAFT EXERCISE CAUTION IN EFFECT FROM THIS EVENING
THROUGH LATE TONIGHT...

.TODAY...East winds 15 to 20 knots with gusts up to 25 knots.
Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: East
6 feet at 6 seconds. A chance of showers and thunderstorms until
late afternoon.
.TONIGHT...East winds 15 to 20 knots with gusts up to 25 knots.
Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: East
5 feet at 7 seconds.
.FRIDAY...East winds around 15 knots with gusts up to 20 knots.
Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: East
5 feet at 7 seconds.
.FRIDAY NIGHT...East winds 10 to 15 knots with gusts up to
20 knots. Seas 3 to 4 feet. Wave Detail: East 4 feet at
7 seconds.
.SATURDAY...East winds around 10 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 3 feet at 7 seconds.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to
3 feet. Wave Detail: Southeast 3 feet at 6 seconds.
.SUNDAY...Southeast winds 5 to 10 knots. Seas around 2 feet.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet.
.MONDAY...East winds around 5 knots. Seas 1 foot or less. A
chance of showers and thunderstorms, mainly in the morning.
.MONDAY NIGHT...East winds 5 to 10 knots. Seas 1 foot or less. A
slight chance of showers and thunderstorms after midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ472-172100-
Coastal waters from Intracoastal City to Cameron LA from 20 to
60 NM-
309 AM CDT Thu Sep 17 2026

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.TODAY...East winds 15 to 20 knots with gusts up to 25 knots.
Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: East
6 feet at 6 seconds. A chance of showers and thunderstorms early
this morning.
.TONIGHT...East winds 20 to 25 knots, diminishing to 15 to
20 knots after midnight. Seas 5 to 7 feet, occasionally to
9 feet. Wave Detail: East 6 feet at 7 seconds.
.FRIDAY...East winds 15 to 20 knots. Seas 3 to 5 feet,
occasionally to 6 feet. Wave Detail: East 5 feet at 7 seconds. A
slight chance of showers in the morning.
.FRIDAY NIGHT...East winds 10 to 15 knots with gusts up to
20 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail:
East 4 feet at 7 seconds.
.SATURDAY...East winds around 10 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 3 feet at 6 seconds.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to
3 feet. Wave Detail: Southeast 3 feet at 6 seconds.
.SUNDAY...East winds around 5 knots. Seas around 2 feet. A slight
chance of showers and thunderstorms in the morning.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet.
.MONDAY...East winds around 5 knots. Seas 1 foot or less. A
chance of showers and thunderstorms, mainly in the morning.
.MONDAY NIGHT...East winds 5 to 10 knots. Seas 1 foot or less.

Winds and seas higher in and near thunderstorms.

$$

GMZ475-172100-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA from 20 to 60 NM-
309 AM CDT Thu Sep 17 2026

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.TODAY...East winds 20 to 25 knots. Seas 5 to 7 feet,
occasionally to 9 feet. Wave Detail: East 7 feet at 6 seconds.
.TONIGHT...East winds 20 to 25 knots, diminishing to 15 to
20 knots after midnight. Seas 5 to 8 feet, occasionally to
10 feet. Wave Detail: East 8 feet at 7 seconds.
.FRIDAY...East winds 15 to 20 knots. Seas 4 to 6 feet,
occasionally to 8 feet. Wave Detail: East 6 feet at 7 seconds.
.FRIDAY NIGHT...East winds 15 to 20 knots, diminishing to 10 to
15 knots after midnight. Seas 3 to 5 feet, occasionally to
6 feet. Wave Detail: East 5 feet at 7 seconds.
.SATURDAY...East winds around 10 knots. Seas 2 to 3 feet. Wave
Detail: East 3 feet at 6 seconds.
.SATURDAY NIGHT...Southeast winds 10 to 15 knots, diminishing to
5 to 10 knots after midnight. Seas 2 to 3 feet. Wave Detail:
Southeast 3 feet at 6 seconds.
.SUNDAY...East winds around 5 knots. Seas around 2 feet. A slight
chance of showers and thunderstorms in the morning.
.SUNDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet.
.MONDAY...East winds 5 to 10 knots. Seas 1 foot or less. A chance
of showers. A chance of thunderstorms, mainly in the morning.
.MONDAY NIGHT...East winds 5 to 10 knots. Seas 1 foot or less. A
slight chance of showers and thunderstorms after midnight.

Winds and seas higher in and near thunderstorms.

$$