432
FZUS54 KLCH 112009
CWFLCH

Coastal Waters Forecast
National Weather Service Lake Charles LA
309 PM CDT Tue Aug 11 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.

GMZ400-120900-
309 PM CDT Tue Aug 11 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...

Surface high pressure over the northeast Gulf will keep winds out of
the south around 5-15 kt throughout the forecast period. A few
showers/storms are possible through Wednesday, after which high
pressure aloft will build and keep rain chances near zero through
the end of the week.

$$

GMZ430-120900-
Sabine Lake-
309 PM CDT Tue Aug 11 2026

.TONIGHT...South winds 5 to 10 knots. Lake waters light chop.
.WEDNESDAY...South winds 5 to 10 knots. Lake waters light chop.
.WEDNESDAY NIGHT...South winds around 10 knots. Lake waters light
chop.
.THURSDAY...South winds 5 to 10 knots. Lake waters light chop.
.THURSDAY NIGHT...South winds 5 to 10 knots. Lake waters light
chop.
.FRIDAY...South winds 5 to 10 knots. Lake waters light chop.
.FRIDAY NIGHT...South winds 5 to 10 knots, diminishing to around
5 knots after midnight. Lake waters light chop.
.SATURDAY...Southwest winds around 5 knots, becoming south in the
afternoon. Lake waters light chop.
.SATURDAY NIGHT...South winds 5 to 10 knots, becoming southwest
after midnight. Lake waters light chop.
.SUNDAY...Northwest winds around 5 knots, becoming south in the
afternoon. Lake waters smooth.
.SUNDAY NIGHT...Southwest winds 5 to 10 knots. Lake waters light
chop.

$$

GMZ432-120900-
Calcasieu Lake-
309 PM CDT Tue Aug 11 2026

.TONIGHT...South winds 5 to 10 knots. Lake waters light chop.
.WEDNESDAY...Southwest winds 5 to 10 knots, becoming south 10 to
15 knots with gusts up to 20 knots in the afternoon. Lake waters
choppy. A slight chance of showers and thunderstorms in the
afternoon.
.WEDNESDAY NIGHT...South winds 10 to 15 knots. Lake waters
choppy.
.THURSDAY...Southwest winds 5 to 10 knots, becoming south 10 to
15 knots with gusts up to 20 knots in the afternoon. Lake waters
choppy.
.THURSDAY NIGHT...South winds 10 to 15 knots, diminishing to 5 to
10 knots after midnight. Lake waters choppy.
.FRIDAY...South winds 5 to 10 knots. Lake waters light chop.
.FRIDAY NIGHT...South winds 5 to 10 knots, diminishing to around
5 knots after midnight. Lake waters light chop.
.SATURDAY...Southwest winds around 5 knots, becoming south in the
afternoon. Lake waters light chop.
.SATURDAY NIGHT...Southwest winds 5 to 10 knots. Lake waters
light chop.
.SUNDAY...Northwest winds around 5 knots, becoming southwest in
the afternoon. Lake waters light chop.
.SUNDAY NIGHT...Southwest winds 5 to 10 knots. Lake waters light
chop.

Winds and waves higher in and near thunderstorms.

$$

GMZ435-120900-
Vermilion and West Cote Blanche Bays-
309 PM CDT Tue Aug 11 2026

.TONIGHT...South winds 5 to 10 knots. Bay waters light chop.
.WEDNESDAY...Southwest winds 5 to 10 knots. Bay waters light
chop. A slight chance of showers and thunderstorms.
.WEDNESDAY NIGHT...Southwest winds around 10 knots. Bay waters
light chop.
.THURSDAY...Southwest winds 5 to 10 knots. Bay waters light chop.
.THURSDAY NIGHT...South winds 5 to 10 knots. Bay waters light
chop.
.FRIDAY...South winds 5 to 10 knots. Bay waters light chop.
.FRIDAY NIGHT...South winds 5 to 10 knots, becoming southwest
after midnight. Bay waters light chop.
.SATURDAY...Northwest winds around 5 knots, becoming south in the
afternoon. Bay waters light chop.
.SATURDAY NIGHT...Southwest winds 5 to 10 knots. Bay waters light
chop.
.SUNDAY...Northwest winds around 5 knots, becoming southwest in
the afternoon. Bay waters light chop.
.SUNDAY NIGHT...Southwest winds 5 to 10 knots. Bay waters light
chop.

Winds and waves higher in and near thunderstorms.

$$

GMZ436-120900-
Atchafalaya and East Cote Blanche Bays-
309 PM CDT Tue Aug 11 2026

.TONIGHT...South winds 5 to 10 knots. Bay waters light chop.
.WEDNESDAY...Southwest winds 5 to 10 knots. Bay waters light
chop. A slight chance of showers and thunderstorms.
.WEDNESDAY NIGHT...Southwest winds 5 to 10 knots. Bay waters
light chop.
.THURSDAY...Southwest winds 5 to 10 knots. Bay waters light chop.
.THURSDAY NIGHT...South winds 5 to 10 knots. Bay waters light
chop.
.FRIDAY...South winds around 5 knots, increasing to 5 to 10 knots
in the afternoon. Bay waters light chop.
.FRIDAY NIGHT...Southwest winds around 5 knots. Bay waters
smooth.
.SATURDAY...Northwest winds around 5 knots, becoming southwest in
the afternoon. Bay waters smooth.
.SATURDAY NIGHT...Southwest winds around 5 knots. Bay waters
smooth.
.SUNDAY...Northwest winds around 5 knots, becoming southwest in
the afternoon. Bay waters smooth. A slight chance of showers and
thunderstorms in the afternoon.
.SUNDAY NIGHT...Southwest winds around 5 knots. Bay waters
smooth.

Winds and waves higher in and near thunderstorms.

$$

GMZ450-120900-
Coastal waters from Cameron LA to High Island TX out 20 NM-
309 PM CDT Tue Aug 11 2026

.TONIGHT...South winds 10 to 15 knots. Seas around 2 feet. Wave
Detail: South 2 feet at 4 seconds.
.WEDNESDAY...Southwest winds 10 to 15 knots. Seas around 2 feet.
Wave Detail: South 2 feet at 4 seconds.
.WEDNESDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet.
Wave Detail: South 3 feet at 4 seconds.
.THURSDAY...South winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: South 3 feet at 5 seconds.
.THURSDAY NIGHT...South winds 10 to 15 knots with gusts up to
20 knots. Seas 2 to 3 feet. Wave Detail: South 3 feet at
4 seconds.
.FRIDAY...South winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: South 2 feet at 5 seconds.
.FRIDAY NIGHT...South winds 10 to 15 knots. Seas around 2 feet.
.SATURDAY...South winds 5 to 10 knots. Seas around 2 feet.
.SATURDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet.
.SUNDAY...West winds around 5 knots, becoming south in the
afternoon. Seas around 2 feet in the morning, then 1 foot or
less.
.SUNDAY NIGHT...Southwest winds 5 to 10 knots. Seas around
2 feet.

$$

GMZ452-120900-
Coastal waters from Intracoastal City to Cameron LA out 20 NM-
309 PM CDT Tue Aug 11 2026

.TONIGHT...South winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: South 2 feet at 4 seconds.
.WEDNESDAY...Southwest winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: South 2 feet at 4 seconds.
.WEDNESDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet.
Wave Detail: South 3 feet at 4 seconds.
.THURSDAY...South winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: Southwest 3 feet at 4 seconds.
.THURSDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet.
Wave Detail: South 2 feet at 4 seconds.
.FRIDAY...South winds around 10 knots. Seas around 2 feet. Wave
Detail: South 2 feet at 5 seconds.
.FRIDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet.
.SATURDAY...South winds 5 to 10 knots. Seas around 2 feet.
.SATURDAY NIGHT...Southwest winds 5 to 10 knots. Seas around
2 feet.
.SUNDAY...Northwest winds around 5 knots, becoming southwest in
the afternoon. Seas 1 foot or less.
.SUNDAY NIGHT...Southwest winds 5 to 10 knots. Seas around
2 feet.

$$

GMZ455-120900-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA out 20 NM-
309 PM CDT Tue Aug 11 2026

.TONIGHT...South winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: South 1 foot at 2 seconds.
.WEDNESDAY...Southwest winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: South 1 foot at 3 seconds. A slight chance of
showers and thunderstorms.
.WEDNESDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or
less, then around 2 feet after midnight. Wave Detail: Southwest
1 foot at 2 seconds, becoming southwest 2 feet at 3 seconds.
.THURSDAY...Southwest winds 5 to 10 knots. Seas around 2 feet in
the morning, then 1 foot or less. Wave Detail: Southwest 1 foot
at 4 seconds.
.THURSDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: South 1 foot at 3 seconds.
.FRIDAY...South winds 5 to 10 knots. Seas around 2 feet in the
morning, then 1 foot or less. Wave Detail: South 1 foot at
4 seconds.
.FRIDAY NIGHT...South winds 5 to 10 knots. Seas 1 foot or less.
.SATURDAY...Northwest winds around 5 knots, becoming south in the
afternoon. Seas 1 foot or less.
.SATURDAY NIGHT...Southwest winds around 5 knots. Seas 1 foot or
less.
.SUNDAY...Northwest winds around 5 knots, becoming west in the
afternoon. Seas 1 foot or less.
.SUNDAY NIGHT...Southwest winds around 5 knots. Seas 1 foot or
less.

Winds and seas higher in and near thunderstorms.

$$

GMZ470-120900-
Coastal waters from Cameron LA to High Island TX from 20 to 60 NM-
309 PM CDT Tue Aug 11 2026

.TONIGHT...South winds 10 to 15 knots. Seas around 2 feet. Wave
Detail: South 2 feet at 5 seconds.
.WEDNESDAY...South winds around 10 knots. Seas around 2 feet.
Wave Detail: South 2 feet at 5 seconds.
.WEDNESDAY NIGHT...South winds 10 to 15 knots with gusts up to
20 knots. Seas 2 to 3 feet. Wave Detail: South 3 feet at
5 seconds.
.THURSDAY...South winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: South 2 feet at 5 seconds.
.THURSDAY NIGHT...South winds 10 to 15 knots with gusts up to
20 knots. Seas around 3 feet. Wave Detail: South 3 feet at
6 seconds.
.FRIDAY...South winds around 10 knots. Seas 2 to 3 feet. Wave
Detail: South 3 feet at 5 seconds.
.FRIDAY NIGHT...South winds around 10 knots. Seas 2 to 3 feet.
.SATURDAY...Southeast winds 5 to 10 knots. Seas around 2 feet.
.SATURDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet.
.SUNDAY...West winds around 5 knots, becoming southeast around
5 knots in the afternoon. Seas around 2 feet.
.SUNDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet.

$$

GMZ472-120900-
Coastal waters from Intracoastal City to Cameron LA from 20 to
60 NM-
309 PM CDT Tue Aug 11 2026

.TONIGHT...South winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: South 2 feet at 5 seconds.
.WEDNESDAY...Southwest winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: South 2 feet at 5 seconds.
.WEDNESDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet.
Wave Detail: South 2 feet at 5 seconds.
.THURSDAY...South winds 10 to 15 knots, diminishing to 5 to
10 knots in the afternoon. Seas 2 to 3 feet. Wave Detail: South
2 feet at 6 seconds.
.THURSDAY NIGHT...South winds 10 to 15 knots with gusts up to
20 knots. Seas 2 to 3 feet. Wave Detail: South 2 feet at
6 seconds.
.FRIDAY...South winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: South 2 feet at 5 seconds.
.FRIDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet.
.SATURDAY...Southeast winds around 5 knots. Seas around 2 feet.
.SATURDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet.
.SUNDAY...Northwest winds around 5 knots, becoming east in the
afternoon. Seas around 2 feet.
.SUNDAY NIGHT...Southwest winds 5 to 10 knots. Seas around
2 feet.

$$

GMZ475-120900-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA from 20 to 60 NM-
309 PM CDT Tue Aug 11 2026

.TONIGHT...South winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southeast 2 feet at 5 seconds.
.WEDNESDAY...Southwest winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: South 2 feet at 5 seconds.
.WEDNESDAY NIGHT...South winds 5 to 10 knots, increasing to 10 to
15 knots after midnight. Seas around 2 feet. Wave Detail: South
2 feet at 5 seconds.
.THURSDAY...South winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: South 2 feet at 5 seconds.
.THURSDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet.
Wave Detail: South 2 feet at 6 seconds.
.FRIDAY...Southeast winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: South 2 feet at 6 seconds.
.FRIDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet.
.SATURDAY...East winds around 5 knots. Seas around 2 feet.
.SATURDAY NIGHT...South winds around 5 knots. Seas around 2 feet.
.SUNDAY...Northwest winds around 5 knots, becoming northeast in
the afternoon. Seas around 2 feet in the morning, then 1 foot or
less.
.SUNDAY NIGHT...Southwest winds around 5 knots. Seas 1 foot or
less.

$$