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FZUS54 KLCH 240809
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Coastal Waters Forecast
National Weather Service Lake Charles LA
308 AM CDT Mon Aug 24 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.

GMZ400-242100-
308 AM CDT Mon Aug 24 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...

Light onshore winds will persist through the week with seas
ranging from 1-2 feet. Precipitation chances return across the
coastal waters Thursday into next weekend as higher moisture and a
weak upper level trough move into the region.

$$

GMZ430-242100-
Sabine Lake-
308 AM CDT Mon Aug 24 2026

.TODAY...Southwest winds 5 to 10 knots. Lake waters light chop.
.TONIGHT...South winds 5 to 10 knots. Lake waters light chop.
.TUESDAY...West winds 5 to 10 knots, becoming southwest in the
afternoon. Lake waters light chop.
.TUESDAY NIGHT...Southwest winds 5 to 10 knots. Lake waters light
chop.
.WEDNESDAY...Southwest winds 5 to 10 knots. Lake waters light
chop.
.WEDNESDAY NIGHT...Southwest winds 5 to 10 knots. Lake waters
light chop.
.THURSDAY...Southwest winds 5 to 10 knots. Lake waters light
chop. A chance of showers and thunderstorms.
.THURSDAY NIGHT...Southwest winds 5 to 10 knots. Lake waters
light chop. A slight chance of showers and thunderstorms in the
evening, then a chance of showers and thunderstorms after
midnight.
.FRIDAY...West winds around 5 knots, becoming south in the
afternoon. Lake waters smooth. A chance of showers and
thunderstorms.
.FRIDAY NIGHT...South winds around 5 knots. Lake waters smooth. A
slight chance of showers and thunderstorms.

Winds and waves higher in and near thunderstorms.

$$

GMZ432-242100-
Calcasieu Lake-
308 AM CDT Mon Aug 24 2026

.TODAY...Southwest winds 5 to 10 knots. Lake waters light chop. A
slight chance of showers and thunderstorms this afternoon.
.TONIGHT...South winds around 10 knots. Lake waters light chop.
.TUESDAY...Southwest winds 5 to 10 knots. Lake waters light chop.
A slight chance of showers and thunderstorms in the afternoon.
.TUESDAY NIGHT...Southwest winds 5 to 10 knots. Lake waters light
chop.
.WEDNESDAY...Southwest winds 5 to 10 knots. Lake waters light
chop. A slight chance of showers and thunderstorms in the
afternoon.
.WEDNESDAY NIGHT...Southwest winds 5 to 10 knots. Lake waters
light chop.
.THURSDAY...Southwest winds 5 to 10 knots. Lake waters light
chop. A chance of showers and thunderstorms in the morning, then
showers and thunderstorms likely in the afternoon.
.THURSDAY NIGHT...South winds 5 to 10 knots, becoming southwest
after midnight. Lake waters light chop. A chance of showers and
thunderstorms.
.FRIDAY...West winds around 5 knots, becoming south in the
afternoon. Lake waters smooth. A chance of showers and
thunderstorms.
.FRIDAY NIGHT...South winds around 5 knots. Lake waters smooth. A
slight chance of showers and thunderstorms after midnight.

Winds and waves higher in and near thunderstorms.

$$

GMZ435-242100-
Vermilion and West Cote Blanche Bays-
308 AM CDT Mon Aug 24 2026

.TODAY...Southwest winds 5 to 10 knots. Bay waters light chop. A
chance of showers and thunderstorms this afternoon.
.TONIGHT...Southeast winds 5 to 10 knots, becoming southwest
after midnight. Bay waters light chop. A chance of showers and
thunderstorms in the evening.
.TUESDAY...West winds 5 to 10 knots. Bay waters light chop. A
slight chance of showers and thunderstorms in the morning, then
showers and thunderstorms likely in the afternoon.
.TUESDAY NIGHT...Southwest winds around 5 knots. Bay waters
smooth.
.WEDNESDAY...West winds around 5 knots. Bay waters smooth. A
slight chance of showers and thunderstorms in the morning, then
showers likely with a chance of thunderstorms in the afternoon.
.WEDNESDAY NIGHT...Southwest winds 5 to 10 knots. Bay waters
light chop. A slight chance of showers and thunderstorms after
midnight.
.THURSDAY...Southwest winds 5 to 10 knots. Bay waters light chop.
Showers likely. A chance of thunderstorms in the morning, then
thunderstorms likely in the afternoon.
.THURSDAY NIGHT...Southwest winds around 5 knots. Bay waters
smooth. A chance of thunderstorms. A chance of showers in the
evening, then showers likely after midnight.
.FRIDAY...West winds around 5 knots, becoming southwest around
5 knots in the afternoon. Bay waters smooth. A chance of
thunderstorms. Showers likely, mainly in the morning.
.FRIDAY NIGHT...Southeast winds around 5 knots. Bay waters
smooth. A slight chance of showers and thunderstorms in the
evening, then a chance of showers and thunderstorms after
midnight.

Winds and waves higher in and near thunderstorms.

$$

GMZ436-242100-
Atchafalaya and East Cote Blanche Bays-
308 AM CDT Mon Aug 24 2026

.TODAY...West winds 5 to 10 knots. Bay waters light chop. A
chance of showers and thunderstorms this afternoon.
.TONIGHT...East winds 5 to 10 knots, becoming southwest after
midnight. Bay waters light chop. A chance of showers and
thunderstorms in the evening.
.TUESDAY...West winds 5 to 10 knots. Bay waters light chop. A
chance of showers and thunderstorms in the morning, then showers
and thunderstorms likely in the afternoon.
.TUESDAY NIGHT...Southwest winds around 5 knots. Bay waters
smooth. A slight chance of showers and thunderstorms.
.WEDNESDAY...West winds around 5 knots. Bay waters smooth. A
chance of showers and thunderstorms in the morning, then showers
and thunderstorms likely in the afternoon.
.WEDNESDAY NIGHT...Southwest winds around 5 knots. Bay waters
smooth. A chance of showers and thunderstorms after midnight.
.THURSDAY...West winds around 5 knots. Bay waters smooth. Showers
likely with a chance of thunderstorms in the morning, then
showers and thunderstorms likely in the afternoon.
.THURSDAY NIGHT...Southwest winds around 5 knots. Bay waters
smooth. A chance of thunderstorms. A chance of showers in the
evening, then showers likely after midnight.
.FRIDAY...Southwest winds around 5 knots. Bay waters smooth. A
chance of thunderstorms. Showers likely, mainly in the morning.
.FRIDAY NIGHT...Southeast winds around 5 knots. Bay waters
smooth. A slight chance of showers and thunderstorms in the
evening, then a chance of showers and thunderstorms after
midnight.

Winds and waves higher in and near thunderstorms.

$$

GMZ450-242100-
Coastal waters from Cameron LA to High Island TX out 20 NM-
308 AM CDT Mon Aug 24 2026

.TODAY...Southwest winds 10 to 15 knots. Seas around 2 feet. Wave
Detail: Southwest 2 feet at 4 seconds.
.TONIGHT...South winds 10 to 15 knots. Seas around 2 feet. Wave
Detail: Southwest 2 feet at 4 seconds.
.TUESDAY...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.
.TUESDAY NIGHT...Southwest winds 10 to 15 knots. Seas around
2 feet. Wave Detail: Southwest 2 feet at 4 seconds.
.WEDNESDAY...Southwest winds 10 to 15 knots. Seas around 2 feet.
Wave Detail: Southwest 2 feet at 4 seconds.
.WEDNESDAY NIGHT...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. A
chance of showers and thunderstorms, mainly in the morning.
.THURSDAY NIGHT...Southwest winds 10 to 15 knots. Seas around
2 feet. A slight chance of showers and thunderstorms in the
evening, then a chance of showers and thunderstorms after
midnight.
.FRIDAY...West winds 5 to 10 knots, becoming southwest in the
afternoon. Seas around 2 feet in the morning, then 1 foot or
less. A chance of showers and thunderstorms, mainly in the
morning.
.FRIDAY NIGHT...South winds 5 to 10 knots. Seas 1 foot or less. A
slight chance of showers and thunderstorms in the evening, then a
chance of showers and thunderstorms after midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ452-242100-
Coastal waters from Intracoastal City to Cameron LA out 20 NM-
308 AM CDT Mon Aug 24 2026

.TODAY...Southwest winds 10 to 15 knots, diminishing to 5 to
10 knots this afternoon. Seas around 2 feet. Wave Detail:
Southwest 2 feet at 4 seconds. A slight chance of showers and
thunderstorms this afternoon.
.TONIGHT...South winds 10 to 15 knots. Seas around 2 feet. Wave
Detail: Southwest 2 feet at 4 seconds. A slight chance of showers
and thunderstorms in the evening.
.TUESDAY...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. A chance of
showers and thunderstorms in the afternoon.
.TUESDAY NIGHT...Southwest winds 5 to 10 knots. Seas around
2 feet. Wave Detail: Southwest 2 feet at 4 seconds.
.WEDNESDAY...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. A chance of
showers and thunderstorms, mainly in the morning.
.WEDNESDAY NIGHT...Southwest winds 10 to 15 knots. Seas around
2 feet. Wave Detail: Southwest 2 feet at 4 seconds. A slight
chance of showers and thunderstorms after midnight.
.THURSDAY...Southwest winds 5 to 10 knots. Seas around 2 feet. A
chance of showers and thunderstorms.
.THURSDAY NIGHT...Southwest winds 5 to 10 knots. Seas around
2 feet. A slight chance of showers and thunderstorms in the
evening, then a chance of showers and thunderstorms after
midnight.
.FRIDAY...West winds around 5 knots. Seas 1 foot or less. A
chance of thunderstorms. A chance of showers.
.FRIDAY NIGHT...South winds 5 to 10 knots. Seas 1 foot or less. A
slight chance of showers and thunderstorms in the evening, then a
chance of showers and thunderstorms after midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ455-242100-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA out 20 NM-
308 AM CDT Mon Aug 24 2026

.TODAY...West winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: Southwest 1 foot at 3 seconds. A slight chance of showers
and thunderstorms this afternoon.
.TONIGHT...East winds 5 to 10 knots, becoming southwest after
midnight. Seas 1 foot or less. Wave Detail: Southwest 1 foot at
3 seconds. A slight chance of showers and thunderstorms in the
evening.
.TUESDAY...West winds 5 to 10 knots, becoming northwest in the
afternoon. Seas 1 foot or less. Wave Detail: Southwest 1 foot at
3 seconds. A slight chance of showers and thunderstorms in the
morning, then showers likely with a chance of thunderstorms in
the afternoon.
.TUESDAY NIGHT...Southwest winds around 5 knots. Seas 1 foot or
less. Wave Detail: Southwest 1 foot at 3 seconds. A slight chance
of showers and thunderstorms.
.WEDNESDAY...West winds around 5 knots. Seas 1 foot or less. Wave
Detail: Southwest 1 foot at 3 seconds. A chance of showers and
thunderstorms.
.WEDNESDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or
less. Wave Detail: Southwest 1 foot at 3 seconds. A chance of
showers and thunderstorms after midnight.
.THURSDAY...West winds 5 to 10 knots. Seas 1 foot or less. A
chance of thunderstorms. Showers likely, mainly in the morning.
.THURSDAY NIGHT...Southwest winds around 5 knots. Seas 1 foot or
less. A slight chance of showers and thunderstorms in the
evening, then showers likely with a chance of thunderstorms after
midnight.
.FRIDAY...West winds around 5 knots. Seas 1 foot or less. Showers
and thunderstorms likely, mainly in the morning.
.FRIDAY NIGHT...Southeast winds around 5 knots. Seas 1 foot or
less. A slight chance of showers and thunderstorms in the
evening, then a chance of showers and thunderstorms after
midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ470-242100-
Coastal waters from Cameron LA to High Island TX from 20 to 60 NM-
308 AM CDT Mon Aug 24 2026

.TODAY...Southwest winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southwest 2 feet at 4 seconds.
.TONIGHT...South winds 5 to 10 knots, increasing to 10 to
15 knots after midnight. Seas around 2 feet. Wave Detail:
Southwest 2 feet at 4 seconds.
.TUESDAY...Southwest 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.
.TUESDAY NIGHT...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 in
the morning, then 1 foot or less. Wave Detail: Southwest 2 feet
at 4 seconds, becoming southwest 1 foot at 4 seconds.
.WEDNESDAY NIGHT...Southwest winds 5 to 10 knots. Seas around
2 feet. Wave Detail: South 2 feet at 4 seconds.
.THURSDAY...Southwest winds 5 to 10 knots. Seas around 2 feet. A
chance of showers and thunderstorms in the morning.
.THURSDAY NIGHT...Southwest winds 5 to 10 knots. Seas around
2 feet. A chance of showers and thunderstorms after midnight.
.FRIDAY...Southwest winds 5 to 10 knots. Seas around 2 feet in
the morning, then 1 foot or less. A chance of showers and
thunderstorms, mainly in the morning.
.FRIDAY NIGHT...South 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.

$$

GMZ472-242100-
Coastal waters from Intracoastal City to Cameron LA from 20 to
60 NM-
308 AM CDT Mon Aug 24 2026

.TODAY...Southwest winds 5 to 10 knots. Seas around 2 feet this
morning, then 1 foot or less. Wave Detail: Southwest 1 foot at
4 seconds.
.TONIGHT...South winds 5 to 10 knots. Seas 1 foot or less, then
around 2 feet after midnight. Wave Detail: Southwest 1 foot at
4 seconds, becoming southwest 2 feet at 3 seconds.
.TUESDAY...West winds 5 to 10 knots, becoming northwest in the
afternoon. 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. A slight chance of showers and
thunderstorms in the afternoon.
.TUESDAY NIGHT...South winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: Southwest 1 foot at 4 seconds.
.WEDNESDAY...West winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: Southwest 1 foot at 4 seconds. A chance of showers and
thunderstorms, mainly in the morning.
.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 4 seconds, becoming south 2 feet at 3 seconds.
.THURSDAY...West winds 5 to 10 knots. Seas around 2 feet in the
morning, then 1 foot or less. A chance of showers and
thunderstorms, mainly in the morning.
.THURSDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or
less, then around 2 feet after midnight. A chance of showers and
thunderstorms after midnight.
.FRIDAY...West winds 5 to 10 knots. Seas 1 foot or less. A chance
of showers and thunderstorms, mainly in the morning.
.FRIDAY NIGHT...South winds around 5 knots. Seas 1 foot or less.
A slight chance of showers and thunderstorms in the evening, then
a chance of showers and thunderstorms after midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ475-242100-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA from 20 to 60 NM-
308 AM CDT Mon Aug 24 2026

.TODAY...West winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: West 1 foot at 3 seconds.
.TONIGHT...Northwest winds around 5 knots, becoming south after
midnight. Seas 1 foot or less. Wave Detail: West 1 foot at
3 seconds. A slight chance of showers and thunderstorms in the
evening.
.TUESDAY...West winds 5 to 10 knots, becoming north in the
afternoon. Seas 1 foot or less. Wave Detail: Southwest 1 foot at
3 seconds. A slight chance of showers and thunderstorms in the
morning, then a chance of showers and thunderstorms in the
afternoon.
.TUESDAY NIGHT...South winds around 5 knots. Seas 1 foot or less.
Wave Detail: Southwest 1 foot at 3 seconds. A chance of showers
and thunderstorms in the evening, then a slight chance of showers
after midnight.
.WEDNESDAY...West winds around 5 knots. Seas 1 foot or less. Wave
Detail: Southwest 1 foot at 3 seconds. A chance of showers and
thunderstorms.
.WEDNESDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or
less. Wave Detail: Southwest 1 foot at 3 seconds. A slight chance
of showers and thunderstorms after midnight.
.THURSDAY...West winds 5 to 10 knots. Seas 1 foot or less. A
chance of thunderstorms. Showers likely, mainly in the morning.
.THURSDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or
less. A slight chance of showers and thunderstorms in the
evening, then a chance of showers and thunderstorms after
midnight.
.FRIDAY...West winds 5 to 10 knots, diminishing to around 5 knots
in the afternoon. Seas 1 foot or less. Showers and thunderstorms
likely, mainly in the morning.
.FRIDAY NIGHT...Southeast winds around 5 knots. Seas 1 foot or
less. A slight chance of showers and thunderstorms in the
evening, then a chance of showers and thunderstorms after
midnight.

Winds and seas higher in and near thunderstorms.

$$