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FZUS54 KLCH 150809
CWFLCH

Coastal Waters Forecast
National Weather Service Lake Charles LA
309 AM 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.

GMZ400-152100-
309 AM 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 4-10 kt through Tuesday night, with seas 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.

$$

GMZ430-152100-
Sabine Lake-
309 AM CDT Tue Sep 15 2026

.TODAY...Light and variable winds, becoming southeast around
5 knots late this morning and afternoon. Lake waters smooth.
.TONIGHT...Southeast winds around 5 knots. Lake waters smooth.
.WEDNESDAY...East winds 5 to 10 knots. Lake waters light chop. A
slight chance of showers and thunderstorms in the afternoon.
.WEDNESDAY NIGHT...East winds 5 to 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 5 to 10 knots. Lake waters light chop. A
chance of showers with a slight chance of thunderstorms in the
morning.
.THURSDAY NIGHT...East winds around 5 knots. Lake waters smooth.
.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 in
the afternoon. Lake waters smooth.
.SATURDAY NIGHT...South winds around 5 knots. Lake waters smooth.

Winds and waves higher in and near thunderstorms.

$$

GMZ432-152100-
Calcasieu Lake-
309 AM CDT Tue Sep 15 2026

.TODAY...Southeast winds around 5 knots. Lake waters smooth.
.TONIGHT...South winds around 5 knots, becoming east around
5 knots after midnight. Lake waters smooth.
.WEDNESDAY...East winds 5 to 10 knots. Lake waters light chop. A
slight chance of showers and thunderstorms in the afternoon.
.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. Lake waters choppy. A
chance of showers in the morning.
.THURSDAY NIGHT...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 around 5 knots. Lake waters
smooth.
.SATURDAY...Northeast winds around 5 knots, becoming southeast in
the afternoon. Lake waters smooth.
.SATURDAY NIGHT...South winds around 5 knots. Lake waters smooth.

Winds and waves higher in and near thunderstorms.

$$

GMZ435-152100-
Vermilion and West Cote Blanche Bays-
309 AM CDT Tue Sep 15 2026

.TODAY...North winds around 5 knots, becoming northeast around
5 knots late this morning, then becoming south around 5 knots
this afternoon. Bay waters smooth. A slight chance of showers and
thunderstorms late.
.TONIGHT...South winds around 5 knots, becoming east after
midnight. Bay waters smooth. A slight chance of showers and
thunderstorms in the 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. Bay waters rough. A
chance of showers and thunderstorms in the evening.
.THURSDAY...East winds 10 to 15 knots. Bay waters choppy.
.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 around 5 knots. Bay waters smooth.
.SATURDAY...Northeast winds around 5 knots, becoming southeast
around 5 knots in the afternoon. Bay waters smooth.
.SATURDAY NIGHT...South winds around 5 knots, becoming east after
midnight. Bay waters smooth.

Winds and waves higher in and near thunderstorms.

$$

GMZ436-152100-
Atchafalaya and East Cote Blanche Bays-
309 AM CDT Tue Sep 15 2026

.TODAY...Northeast winds around 5 knots, becoming south this
afternoon. Bay waters smooth. A slight chance of showers and
thunderstorms early this afternoon. A chance of showers and
thunderstorms late.
.TONIGHT...Southeast winds around 5 knots, becoming east after
midnight. Bay waters smooth. A slight chance of showers and
thunderstorms in the evening.
.WEDNESDAY...East winds 10 to 15 knots. Bay waters choppy.
Showers likely with a chance of thunderstorms in the afternoon.
.WEDNESDAY NIGHT...East winds 10 to 15 knots with gusts up to
20 knots. Bay waters choppy. A chance of showers and
thunderstorms in the evening.
.THURSDAY...East winds 10 to 15 knots. Bay waters choppy.
.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 around 5 knots. Bay waters smooth.
.SATURDAY...Northeast 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.

Winds and waves higher in and near thunderstorms.

$$

GMZ450-152100-
Coastal waters from Cameron LA to High Island TX out 20 NM-
309 AM CDT Tue Sep 15 2026

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

Winds and seas higher in and near thunderstorms.

$$

GMZ452-152100-
Coastal waters from Intracoastal City to Cameron LA out 20 NM-
309 AM CDT Tue Sep 15 2026

.TODAY...South winds around 5 knots, becoming southeast late this
morning and afternoon. Seas 1 foot or less. Wave Detail: South
1 foot at 5 seconds.
.TONIGHT...Southeast winds 5 to 10 knots. 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: Southeast 2 feet at 4 seconds. A
chance of showers and thunderstorms in the afternoon.
.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:
Southeast 4 feet at 5 seconds. Showers likely. A chance of
thunderstorms, mainly in the evening.
.THURSDAY...East winds 15 to 20 knots. Seas 2 to 4 feet. Wave
Detail: Southeast 3 feet at 5 seconds. A slight chance of showers
and thunderstorms in the morning.
.THURSDAY NIGHT...East winds 15 to 20 knots, diminishing to 10 to
15 knots after midnight. Seas 2 to 4 feet. Wave Detail: Southeast
3 feet at 6 seconds.
.FRIDAY...East winds 10 to 15 knots. Seas 2 to 3 feet.
.FRIDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet.
.SATURDAY...East winds 5 to 10 knots. Seas around 2 feet in the
morning, then 1 foot or less.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 foot or
less.

Winds and seas higher in and near thunderstorms.

$$

GMZ455-152100-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA out 20 NM-
309 AM CDT Tue Sep 15 2026

.TODAY...Light and variable winds, becoming east around 5 knots
late this morning and early afternoon, then becoming south late.
Seas 1 foot or less. A slight chance of showers and thunderstorms
late.
.TONIGHT...Southeast winds around 5 knots, becoming east after
midnight. Seas 1 foot or less. Wave Detail: East 1 foot at
2 seconds.
.WEDNESDAY...Northeast winds 10 to 15 knots, becoming east 15 to
20 knots in the afternoon. Seas 2 to 3 feet. Wave Detail: East
2 feet at 3 seconds. 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 4 feet. Wave Detail: East 2 feet at
3 seconds. A chance of showers and thunderstorms in the evening,
then a slight chance of showers after midnight.
.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.
.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. Seas 1 to 2 feet.
.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. A
slight chance of showers and thunderstorms.
.SATURDAY NIGHT...Southeast 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.

$$

GMZ470-152100-
Coastal waters from Cameron LA to High Island TX from 20 to 60 NM-
309 AM CDT Tue Sep 15 2026

.TODAY...South winds around 5 knots, becoming southeast this
afternoon. Seas around 2 feet. Wave Detail: South 2 feet at
5 seconds.
.TONIGHT...Southeast winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: South 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.
.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 showers with a slight
chance of thunderstorms in the evening, then showers with a
chance of thunderstorms after midnight.
.THURSDAY...East winds 15 to 20 knots. Seas 4 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, 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.
.FRIDAY...East winds 10 to 15 knots. Seas 3 to 4 feet.
.FRIDAY NIGHT...East winds 10 to 15 knots, becoming southeast
5 to 10 knots after midnight. 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 around
2 feet.

Winds and seas higher in and near thunderstorms.

$$

GMZ472-152100-
Coastal waters from Intracoastal City to Cameron LA from 20 to
60 NM-
309 AM CDT Tue Sep 15 2026

.TODAY...South winds around 5 knots, becoming east late this
morning and afternoon. Seas around 2 feet this morning, then
1 foot or less. Wave Detail: South 1 foot at 5 seconds.
.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, increasing to 15 to
20 knots in the afternoon. Seas 2 to 4 feet. Wave Detail: East
3 feet 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 4 to 6 feet, occasionally to 8 feet. Wave Detail:
East 6 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
6 feet at 7 seconds. Showers likely with a chance of
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 5 to 7 feet, occasionally to 9 feet. Wave Detail:
East 7 feet at 7 seconds.
.FRIDAY...East winds 10 to 15 knots. Seas 3 to 5 feet,
occasionally to 6 feet.
.FRIDAY NIGHT...East winds 10 to 15 knots, diminishing to 5 to
10 knots after midnight. Seas 2 to 4 feet.
.SATURDAY...East winds around 5 knots. Seas 2 to 3 feet. A slight
chance of showers and thunderstorms in the morning.
.SATURDAY NIGHT...Southeast winds around 5 knots. Seas around
2 feet.

Winds and seas higher in and near thunderstorms.

$$

GMZ475-152100-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA from 20 to 60 NM-
309 AM CDT Tue Sep 15 2026

.TODAY...North winds around 5 knots, becoming east late this
morning and afternoon. Seas 1 foot or less. Wave Detail: South
1 foot at 5 seconds.
.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 slight chance of thunderstorms. A slight
chance of showers in the morning, then a chance of showers in the
afternoon.
.WEDNESDAY NIGHT...East winds 20 to 25 knots with gusts up to
30 knots. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail:
East 7 feet at 7 seconds. A chance of showers with a slight
chance of thunderstorms.
.THURSDAY...East winds 20 to 25 knots. Seas 4 to 6 feet,
occasionally to 8 feet. Wave Detail: East 6 feet at 7 seconds. A
chance of showers with a slight chance of thunderstorms in the
morning, then a slight chance of showers in the afternoon.
.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, diminishing to 10 to
15 knots in the afternoon. Seas 3 to 5 feet, occasionally to
6 feet. A slight chance of showers. A slight chance of
thunderstorms in the afternoon.
.FRIDAY NIGHT...East winds 10 to 15 knots. 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...East winds 5 to 10 knots. Seas around 2 feet. A
slight chance of showers and thunderstorms after midnight.

Winds and seas higher in and near thunderstorms.

$$