970
FZUS54 KLCH 152010
CWFLCH

Coastal Waters Forecast
National Weather Service Lake Charles LA
309 PM CDT Tue Sep 15 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.

GMZ400-160900-
309 PM CDT Tue Sep 15 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...

High pressure over the northern Gulf will keep winds out of
the south to southeast at 5-10 kt through tonight with seas of 1-2
feet. A disturbance moving through the area Wednesday will
strengthen easterly winds to 20-25 kt and increase wave heights to
near 8 feet. Small craft advisories will likely become necessary for
the Wednesday into Thursday time period.


$$

GMZ430-160900-
Sabine Lake-
309 PM CDT Tue Sep 15 2026

.TONIGHT...South winds around 5 knots until early morning,
becoming light and variable. Lake waters smooth.
.WEDNESDAY...East winds 5 to 10 knots. Lake waters light chop.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Lake waters light
chop. A chance of showers with a slight chance of thunderstorms
after midnight.
.THURSDAY...East winds 10 to 15 knots. Lake waters choppy. A
chance of showers. A slight chance of thunderstorms in the
morning, then a chance of thunderstorms in the afternoon.
.THURSDAY NIGHT...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 around 5 knots. Lake waters
smooth.
.SATURDAY...Northeast winds around 5 knots, becoming southeast
around 5 knots in the afternoon. Lake waters smooth.
.SATURDAY NIGHT...South winds around 5 knots. Lake waters smooth.
.SUNDAY...Light and variable winds, becoming southeast around
5 knots in the afternoon. Lake waters smooth. A slight chance of
showers and thunderstorms in the morning.
.SUNDAY NIGHT...South winds around 5 knots. Lake waters smooth.

Winds and waves higher in and near thunderstorms.

$$

GMZ432-160900-
Calcasieu Lake-
309 PM CDT Tue Sep 15 2026

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

Winds and waves higher in and near thunderstorms.

$$

GMZ435-160900-
Vermilion and West Cote Blanche Bays-
309 PM CDT Tue Sep 15 2026

.TONIGHT...South winds around 5 knots, becoming east after
midnight. Bay waters smooth. A slight chance of showers and
thunderstorms early this evening.
.WEDNESDAY...East winds 10 to 15 knots. Bay waters choppy. A
chance of showers and thunderstorms in the afternoon.
.WEDNESDAY NIGHT...East winds 15 to 20 knots, diminishing to
10 to 15 knots after midnight. Bay waters rough. A chance of
showers and thunderstorms, mainly in the evening.
.THURSDAY...East winds 10 to 15 knots. Bay waters choppy.
.THURSDAY NIGHT...East winds 10 to 15 knots. Bay waters choppy.
.FRIDAY...East winds 5 to 10 knots. Bay waters light chop.
.FRIDAY NIGHT...Southeast winds 5 to 10 knots, becoming east
after midnight. Bay waters light chop.
.SATURDAY...Northeast winds around 5 knots, becoming southeast in
the afternoon. Bay waters smooth.
.SATURDAY NIGHT...South winds 5 to 10 knots. Bay waters light
chop. A slight chance of showers after midnight.
.SUNDAY...Northeast winds around 5 knots, becoming southeast
around 5 knots in the afternoon. Bay waters smooth. A chance of
showers. A slight chance of thunderstorms in the morning, then a
chance of thunderstorms in the afternoon.
.SUNDAY NIGHT...South winds around 5 knots, becoming southeast
around 5 knots after midnight. Bay waters smooth.

Winds and waves higher in and near thunderstorms.

$$

GMZ436-160900-
Atchafalaya and East Cote Blanche Bays-
309 PM CDT Tue Sep 15 2026

.TONIGHT...Southeast winds around 5 knots, becoming northeast
around 5 knots late. Bay waters smooth. A slight chance of
showers and thunderstorms early this evening.
.WEDNESDAY...East winds 10 to 15 knots. Bay waters choppy. A
chance of showers and thunderstorms in the afternoon.
.WEDNESDAY NIGHT...East winds 10 to 15 knots. Bay waters choppy.
A chance of showers and thunderstorms in the evening.
.THURSDAY...East winds 10 to 15 knots. Bay waters choppy. A
slight chance of showers in the afternoon.
.THURSDAY NIGHT...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, diminishing to around
5 knots after midnight. Bay waters light chop.
.SATURDAY...East winds around 5 knots, becoming southeast in the
afternoon. Bay waters smooth. A slight chance of showers and
thunderstorms in the afternoon.
.SATURDAY NIGHT...Southeast winds around 5 knots. Bay waters
smooth. A slight chance of showers and thunderstorms after
midnight.
.SUNDAY...Northeast winds around 5 knots, becoming southeast
around 5 knots in the afternoon. Bay waters smooth. A chance of
showers. A slight chance of thunderstorms in the morning, then a
chance of thunderstorms in the afternoon.
.SUNDAY NIGHT...South winds around 5 knots, becoming east around
5 knots after midnight. Bay waters smooth.

Winds and waves higher in and near thunderstorms.

$$

GMZ450-160900-
Coastal waters from Cameron LA to High Island TX out 20 NM-
309 PM CDT Tue Sep 15 2026

.TONIGHT...Southeast winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: South 1 foot at 5 seconds.
.WEDNESDAY...East winds 10 to 15 knots. Seas around 2 feet. Wave
Detail: East 2 feet at 3 seconds. A slight chance of showers and
thunderstorms in the morning.
.WEDNESDAY NIGHT...East winds 10 to 15 knots with gusts up to
20 knots. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at
5 seconds. A slight chance of showers and thunderstorms in the
evening, then showers likely with a chance of thunderstorms after
midnight.
.THURSDAY...East winds 15 to 20 knots. Seas 2 to 4 feet. Wave
Detail: Southeast 3 feet at 5 seconds. A chance of showers. A
chance of thunderstorms, mainly in the morning.
.THURSDAY NIGHT...Southeast winds 10 to 15 knots with gusts up to
20 knots. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at
5 seconds.
.FRIDAY...East winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: East 2 feet at 4 seconds.
.FRIDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet.
.SATURDAY...East winds 5 to 10 knots. Seas around 2 feet.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet.
.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.

Winds and seas higher in and near thunderstorms.

$$

GMZ452-160900-
Coastal waters from Intracoastal City to Cameron LA out 20 NM-
309 PM CDT Tue Sep 15 2026

.TONIGHT...Southeast winds 5 to 10 knots, becoming east late.
Seas 1 foot or less. Wave Detail: South 1 foot at 4 seconds.
.WEDNESDAY...East winds 10 to 15 knots with gusts up to 20 knots.
Seas 2 to 3 feet. Wave Detail: East 2 feet at 4 seconds and
southwest 1 foot at 4 seconds. A slight chance of showers and
thunderstorms in the afternoon.
.WEDNESDAY NIGHT...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. A slight chance of showers and thunderstorms in the
evening, then a chance of showers and thunderstorms after
midnight.
.THURSDAY...East winds 15 to 20 knots. Seas 2 to 4 feet. Wave
Detail: Southeast 3 feet at 5 seconds. A chance of showers and
thunderstorms in the morning, then a slight chance of showers in
the afternoon.
.THURSDAY NIGHT...East winds 15 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.
.FRIDAY NIGHT...Southeast winds 10 to 15 knots, becoming east
5 to 10 knots after midnight. Seas around 2 feet.
.SATURDAY...East winds 5 to 10 knots. Seas around 2 feet.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet.
.SUNDAY...Southeast winds 5 to 10 knots. Seas 1 foot or less. A
slight chance of showers and thunderstorms.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 foot or
less.

Winds and seas higher in and near thunderstorms.

$$

GMZ455-160900-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA out 20 NM-
309 PM CDT Tue Sep 15 2026

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

Winds and seas higher in and near thunderstorms.

$$

GMZ470-160900-
Coastal waters from Cameron LA to High Island TX from 20 to 60 NM-
309 PM CDT Tue Sep 15 2026

.TONIGHT...Southeast winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: Southeast 2 feet at 5 seconds.
.WEDNESDAY...East winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 3 feet at 5 seconds. A slight chance of showers
and thunderstorms in the morning.
.WEDNESDAY NIGHT...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 with a slight chance of
thunderstorms in the evening, then showers likely with a chance
of thunderstorms after midnight.
.THURSDAY...East winds 15 to 20 knots with gusts up to 25 knots.
Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: East
5 feet at 6 seconds. Showers likely with a chance of
thunderstorms in the morning, then a chance of showers with a
slight chance of thunderstorms in the afternoon.
.THURSDAY NIGHT...East winds 15 to 20 knots with gusts up to
25 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail:
East 5 feet at 6 seconds.
.FRIDAY...East winds around 15 knots with gusts up to 20 knots.
Seas 3 to 4 feet. Wave Detail: East 4 feet at 7 seconds.
.FRIDAY NIGHT...East winds 10 to 15 knots with gusts up to
20 knots. Seas 2 to 4 feet.
.SATURDAY...East winds 5 to 10 knots. Seas 2 to 3 feet.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to
3 feet.
.SUNDAY...Southeast 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.

Winds and seas higher in and near thunderstorms.

$$

GMZ472-160900-
Coastal waters from Intracoastal City to Cameron LA from 20 to
60 NM-
309 PM CDT Tue Sep 15 2026

.TONIGHT...Southeast winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: South 1 foot at 5 seconds.
.WEDNESDAY...Northeast winds 10 to 15 knots, becoming east 15 to
20 knots in the afternoon. Seas 2 to 4 feet. Wave Detail:
Southeast 4 feet at 5 seconds. A slight chance of showers and
thunderstorms.
.WEDNESDAY NIGHT...East winds 15 to 20 knots with gusts up to
25 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail:
East 5 feet at 6 seconds. A chance of thunderstorms. A chance of
showers in the evening, then showers likely after midnight.
.THURSDAY...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. A chance of showers and thunderstorms in the
morning, then a slight chance of showers in the afternoon.
.THURSDAY NIGHT...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 7 seconds.
.FRIDAY...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.
.FRIDAY NIGHT...East winds 10 to 15 knots with gusts up to
20 knots. Seas 3 to 4 feet.
.SATURDAY...East winds 5 to 10 knots. Seas 2 to 3 feet. A slight
chance of showers and thunderstorms in the morning.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to
3 feet.
.SUNDAY...East winds around 5 knots. Seas around 2 feet. A chance
of showers with a slight chance of thunderstorms in the morning.
.SUNDAY NIGHT...Southeast winds around 5 knots. Seas around
2 feet.

Winds and seas higher in and near thunderstorms.

$$

GMZ475-160900-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA from 20 to 60 NM-
309 PM CDT Tue Sep 15 2026

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

Winds and seas higher in and near thunderstorms.

$$