811
FZUS54 KLCH 192009
CWFLCH

Coastal Waters Forecast
National Weather Service Lake Charles LA
309 PM CDT Wed Aug 19 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.

GMZ400-200900-
309 PM CDT Wed Aug 19 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 moving over Gulf waters will keep winds in a
westerly to southwesterly direction for the coming days. As the
land heats up each day, winds will increase to an 8 to 12 knot
breeze. Seas may be a light chop for a brief period each day, but
seas should generally remain in the 1 to 2 feet range.

$$

GMZ430-200900-
Sabine Lake-
309 PM CDT Wed Aug 19 2026

.TONIGHT...Southwest winds 10 to 15 knots, diminishing to 5 to
10 knots late. Lake waters choppy.
.THURSDAY...Southwest winds 5 to 10 knots. Lake waters light
chop.
.THURSDAY NIGHT...Southwest winds 5 to 10 knots. Lake waters
light chop.
.FRIDAY...Southwest winds 5 to 10 knots. Lake waters light chop.
.FRIDAY NIGHT...Southwest winds 5 to 10 knots. Lake waters light
chop.
.SATURDAY...Southwest winds 5 to 10 knots. Lake waters light
chop.
.SATURDAY NIGHT...Southwest winds 5 to 10 knots. Lake waters
light chop.
.SUNDAY...West 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.
.MONDAY...Southwest winds 5 to 10 knots. Lake waters light chop.
.MONDAY NIGHT...Southwest winds 5 to 10 knots. Lake waters light
chop.

$$

GMZ432-200900-
Calcasieu Lake-
309 PM CDT Wed Aug 19 2026

.TONIGHT...Southwest winds 10 to 15 knots with gusts up to
20 knots, diminishing to 5 to 10 knots late. Lake waters choppy.
.THURSDAY...West winds 5 to 10 knots, becoming southwest 10 to
15 knots in the afternoon. Lake waters choppy.
.THURSDAY NIGHT...Southwest winds 10 to 15 knots, diminishing to
5 to 10 knots after midnight. Lake waters choppy.
.FRIDAY...West winds 5 to 10 knots, becoming southwest 10 to
15 knots in the afternoon. Lake waters choppy.
.FRIDAY NIGHT...Southwest winds 10 to 15 knots with gusts up to
20 knots, becoming west 5 to 10 knots after midnight. Lake waters
choppy.
.SATURDAY...West winds 5 to 10 knots. Lake waters light chop.
.SATURDAY NIGHT...Southwest winds 5 to 10 knots. Lake waters
light chop.
.SUNDAY...Southwest winds 5 to 10 knots. Lake waters light chop.
.SUNDAY NIGHT...Southwest winds 5 to 10 knots. Lake waters light
chop.
.MONDAY...Southwest winds 5 to 10 knots. Lake waters light chop.
.MONDAY NIGHT...Southwest winds 5 to 10 knots. Lake waters light
chop.

$$

GMZ435-200900-
Vermilion and West Cote Blanche Bays-
309 PM CDT Wed Aug 19 2026

.TONIGHT...Southwest winds 10 to 15 knots. Bay waters choppy.
.THURSDAY...Southwest winds 5 to 10 knots. Bay waters light chop.
.THURSDAY NIGHT...Southwest winds 5 to 10 knots. Bay waters light
chop.
.FRIDAY...West winds 5 to 10 knots, becoming southwest 10 to
15 knots in the afternoon. Bay waters choppy.
.FRIDAY NIGHT...Southwest winds 10 to 15 knots, becoming west
5 to 10 knots after midnight. Bay waters choppy. A slight chance
of thunderstorms in the evening. A slight chance of showers.
.SATURDAY...West winds 5 to 10 knots, becoming southwest in the
afternoon. Bay waters light chop. A slight chance of showers and
thunderstorms in the morning, then a chance of showers and
thunderstorms in the afternoon.
.SATURDAY NIGHT...West winds 5 to 10 knots. Bay waters light
chop.
.SUNDAY...West winds 5 to 10 knots. Bay waters light chop.
.SUNDAY NIGHT...Southwest winds 5 to 10 knots. Bay waters light
chop.
.MONDAY...Southwest winds 5 to 10 knots. Bay waters light chop. A
slight chance of showers and thunderstorms in the afternoon.
.MONDAY NIGHT...Southwest winds 5 to 10 knots. Bay waters light
chop. A slight chance of showers and thunderstorms.

Winds and waves higher in and near thunderstorms.

$$

GMZ436-200900-
Atchafalaya and East Cote Blanche Bays-
309 PM CDT Wed Aug 19 2026

.TONIGHT...Southwest winds 5 to 10 knots. Bay waters light chop.
.THURSDAY...West winds 5 to 10 knots. Bay waters light chop.
.THURSDAY NIGHT...Southwest winds 5 to 10 knots. Bay waters light
chop.
.FRIDAY...West winds 5 to 10 knots. Bay waters light chop. A
slight chance of showers and thunderstorms in the afternoon.
.FRIDAY NIGHT...West winds 5 to 10 knots. Bay waters light chop.
A slight chance of thunderstorms. A slight chance of showers in
the evening, then a chance of showers after midnight.
.SATURDAY...West winds 5 to 10 knots. Bay waters light chop. A
chance of showers and thunderstorms.
.SATURDAY NIGHT...West winds 5 to 10 knots. Bay waters light
chop.
.SUNDAY...West winds 5 to 10 knots. Bay waters light chop. A
slight chance of showers and thunderstorms in the afternoon.
.SUNDAY NIGHT...Southwest winds 5 to 10 knots. Bay waters light
chop.
.MONDAY...West winds 5 to 10 knots. Bay waters light chop. A
slight chance of showers and thunderstorms in the morning, then a
chance of showers and thunderstorms in the afternoon.
.MONDAY NIGHT...Southwest winds 5 to 10 knots. Bay waters light
chop. A slight chance of showers and thunderstorms.

Winds and waves higher in and near thunderstorms.

$$

GMZ450-200900-
Coastal waters from Cameron LA to High Island TX out 20 NM-
309 PM CDT Wed Aug 19 2026

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

$$

GMZ452-200900-
Coastal waters from Intracoastal City to Cameron LA out 20 NM-
309 PM CDT Wed Aug 19 2026

.TONIGHT...Southwest winds 10 to 15 knots. Seas around 2 feet.
Wave Detail: Southwest 2 feet at 4 seconds.
.THURSDAY...Southwest winds 10 to 15 knots. Seas around 2 feet.
Wave Detail: Southwest 2 feet at 4 seconds.
.THURSDAY NIGHT...Southwest winds 10 to 15 knots. Seas around
2 feet. Wave Detail: Southwest 2 feet at 4 seconds.
.FRIDAY...West winds 10 to 15 knots. Seas around 2 feet. Wave
Detail: Southwest 2 feet at 4 seconds.
.FRIDAY NIGHT...Southwest winds 10 to 15 knots. Seas around
2 feet. Wave Detail: Southwest 2 feet at 4 seconds.
.SATURDAY...West winds 10 to 15 knots. Seas around 2 feet. Wave
Detail: Southwest 2 feet at 4 seconds. A slight chance of showers
and thunderstorms.
.SATURDAY NIGHT...Southwest winds 10 to 15 knots. Seas around
2 feet.
.SUNDAY...West winds 5 to 10 knots. Seas around 2 feet.
.SUNDAY NIGHT...Southwest winds 10 to 15 knots. Seas around
2 feet.
.MONDAY...Southwest 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 afternoon.
.MONDAY NIGHT...Southwest winds around 10 knots. Seas around
2 feet. A slight chance of showers and thunderstorms in the
evening.

Winds and seas higher in and near thunderstorms.

$$

GMZ455-200900-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA out 20 NM-
309 PM CDT Wed Aug 19 2026

.TONIGHT...Southwest winds around 10 knots. Seas 1 foot or less.
Wave Detail: Southwest 1 foot at 3 seconds.
.THURSDAY...West winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: Southwest 1 foot at 3 seconds.
.THURSDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or
less. Wave Detail: Southwest 1 foot at 3 seconds.
.FRIDAY...West winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: West 1 foot at 3 seconds.
.FRIDAY NIGHT...West winds around 10 knots. Seas 1 foot or less.
Wave Detail: Southwest 1 foot at 3 seconds. A chance of showers
with a slight chance of thunderstorms after midnight.
.SATURDAY...West winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: West 1 foot at 3 seconds. A chance of showers and
thunderstorms, mainly in the morning.
.SATURDAY NIGHT...West winds 5 to 10 knots. Seas 1 foot or less.
A slight chance of showers and thunderstorms after midnight.
.SUNDAY...West winds 5 to 10 knots. Seas 1 foot or less.
.SUNDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or
less.
.MONDAY...West winds 5 to 10 knots. Seas 1 foot or less. A slight
chance of thunderstorms. A slight chance of showers.
.MONDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or
less. A slight chance of showers and thunderstorms in the
evening.

Winds and seas higher in and near thunderstorms.

$$

GMZ470-200900-
Coastal waters from Cameron LA to High Island TX from 20 to 60 NM-
309 PM CDT Wed Aug 19 2026

.TONIGHT...Southwest winds 10 to 15 knots. Seas around 2 feet.
Wave Detail: Southwest 2 feet at 4 seconds.
.THURSDAY...Southwest winds 10 to 15 knots, diminishing to 5 to
10 knots in the afternoon. Seas around 2 feet. Wave Detail:
Southwest 2 feet at 4 seconds.
.THURSDAY NIGHT...Southwest winds 10 to 15 knots. Seas around
2 feet. Wave Detail: Southwest 2 feet at 4 seconds.
.FRIDAY...Southwest winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southwest 2 feet at 4 seconds.
.FRIDAY NIGHT...Southwest winds around 10 knots. Seas around
2 feet. Wave Detail: South 2 feet at 5 seconds.
.SATURDAY...West winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: South 2 feet at 5 seconds.
.SATURDAY NIGHT...Southwest winds 5 to 10 knots. Seas around
2 feet.
.SUNDAY...Southwest winds 5 to 10 knots. Seas around 2 feet.
.SUNDAY NIGHT...Southwest winds 5 to 10 knots. Seas around
2 feet.
.MONDAY...Southwest winds 5 to 10 knots. Seas around 2 feet in
the morning, then 1 foot or less.
.MONDAY NIGHT...South winds 5 to 10 knots. Seas 1 foot or less,
then around 2 feet after midnight.

$$

GMZ472-200900-
Coastal waters from Intracoastal City to Cameron LA from 20 to
60 NM-
309 PM CDT Wed Aug 19 2026

.TONIGHT...Southwest winds 10 to 15 knots. Seas around 2 feet.
Wave Detail: Southwest 2 feet at 4 seconds.
.THURSDAY...Southwest winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: Southwest 2 feet at 4 seconds.
.THURSDAY NIGHT...Southwest winds 5 to 10 knots. Seas around
2 feet. Wave Detail: Southwest 2 feet at 4 seconds.
.FRIDAY...West winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southwest 2 feet at 4 seconds.
.FRIDAY NIGHT...Southwest winds around 10 knots. Seas around
2 feet. Wave Detail: South 2 feet at 5 seconds.
.SATURDAY...West winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southwest 2 feet at 5 seconds. A slight chance of showers
and thunderstorms.
.SATURDAY NIGHT...Southwest winds around 10 knots. Seas around
2 feet.
.SUNDAY...West 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...Southwest winds 5 to 10 knots. Seas around
2 feet.
.MONDAY...West 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 afternoon.
.MONDAY NIGHT...South winds 5 to 10 knots. Seas 1 foot or less. A
slight chance of showers and thunderstorms in the evening.

Winds and seas higher in and near thunderstorms.

$$

GMZ475-200900-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA from 20 to 60 NM-
309 PM CDT Wed Aug 19 2026

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

Winds and seas higher in and near thunderstorms.

$$