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FZUS54 KLCH 131805
CWFLCH

Coastal Waters Forecast
National Weather Service Lake Charles LA
104 PM CDT Wed Aug 13 2025

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.

GMZ400-140700-
104 PM CDT Wed Aug 13 2025

.Synopsis for Lower Atchafalaya River LA to High Island TX out
60 NM including Sabine and Calcasieu Lakes and Vermilion and Cote
Blanche Bays...

A tropical wave over the northern gulf will keep precip chances
high today and tomorrow. A weak tropical disturbance moving up
the Texas coast may yield increasing thunderstorms over the
coastal waters late in the week through the weekend depending on
its exact track. However, winds and seas are expected to remain
low through the middle of next week.

$$

GMZ430-140700-
Sabine Lake-
104 PM CDT Wed Aug 13 2025

.TONIGHT...Southwest winds around 5 knots. Lake waters smooth. A
chance of showers this evening. A chance of thunderstorms. A
slight chance of showers after midnight.
.THURSDAY...Southwest winds around 5 knots, becoming south in the
afternoon. 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. Lake waters light
chop. A slight chance of showers and thunderstorms.
.FRIDAY...South winds around 5 knots, increasing to 5 to 10 knots
in the afternoon. Lake waters light chop. A chance of showers and
thunderstorms.
.FRIDAY NIGHT...South winds 5 to 10 knots, diminishing to around
5 knots after midnight. Lake waters light chop. A slight chance
of showers and thunderstorms after midnight.
.SATURDAY...South winds around 5 knots. Lake waters smooth. A
chance of showers and thunderstorms.
.SATURDAY NIGHT...Southwest winds around 5 knots. Lake waters
smooth.
.SUNDAY...Northwest winds around 5 knots, becoming east around
5 knots in the afternoon. Lake waters smooth. A chance of showers
and thunderstorms.
.SUNDAY NIGHT...Southwest winds around 5 knots in the evening,
becoming light and variable. Lake waters smooth. A slight chance
of showers and thunderstorms.
.MONDAY...North winds around 5 knots, becoming east in the
afternoon. Lake waters smooth. A chance of showers and
thunderstorms.
.MONDAY NIGHT...South winds around 5 knots in the evening,
becoming light and variable. Lake waters smooth. A slight chance
of showers and thunderstorms.

Winds and waves higher in and near thunderstorms.

$$

GMZ432-140700-
Calcasieu Lake-
104 PM CDT Wed Aug 13 2025

.TONIGHT...Southwest winds 5 to 10 knots. Lake waters light chop.
A chance of showers and thunderstorms early this evening. A
slight chance of showers and thunderstorms after midnight, then a
chance of showers and thunderstorms late.
.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. Lake waters light
chop. A chance of showers and thunderstorms, mainly in the
evening.
.FRIDAY...South winds around 5 knots, increasing to 5 to 10 knots
in the afternoon. Lake waters light chop. A chance of showers and
thunderstorms.
.FRIDAY NIGHT...South winds 5 to 10 knots, diminishing to around
5 knots after midnight. Lake waters light chop. A slight chance
of showers and thunderstorms after midnight.
.SATURDAY...South winds around 5 knots. Lake waters smooth. A
chance of showers and thunderstorms.
.SATURDAY NIGHT...Southwest winds around 5 knots. Lake waters
smooth.
.SUNDAY...Northwest winds around 5 knots. Lake waters smooth. A
chance of showers and thunderstorms.
.SUNDAY NIGHT...Southwest winds around 5 knots, becoming west
after midnight. Lake waters smooth. A slight chance of showers
and thunderstorms in the evening, then a chance of showers and
thunderstorms after midnight.
.MONDAY...North winds around 5 knots, becoming southeast in the
afternoon. Lake waters smooth. A chance of showers and
thunderstorms.
.MONDAY NIGHT...South winds around 5 knots in the evening,
becoming light and variable. Lake 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.

$$

GMZ435-140700-
Vermilion and West Cote Blanche Bays-
104 PM CDT Wed Aug 13 2025

.TONIGHT...Southwest winds 5 to 10 knots. Bay waters light chop.
A slight chance of showers and thunderstorms early this evening.
.THURSDAY...Southwest winds 5 to 10 knots. Bay waters light chop.
A chance of showers and thunderstorms.
.THURSDAY NIGHT...Southwest winds 5 to 10 knots. Bay waters light
chop. A chance of showers and thunderstorms, mainly in the
evening.
.FRIDAY...South winds around 5 knots. Bay waters smooth. A chance
of showers and thunderstorms.
.FRIDAY NIGHT...South winds around 5 knots. Bay waters smooth.
.SATURDAY...North winds around 5 knots, becoming south around
5 knots in the afternoon. Bay waters smooth. A chance of showers
and thunderstorms.
.SATURDAY NIGHT...Southwest winds around 5 knots. Bay waters
smooth. A slight chance of showers and thunderstorms after
midnight.
.SUNDAY...Northwest winds around 5 knots. Bay waters smooth. A
chance of showers and thunderstorms in the morning, then showers
and thunderstorms likely in the afternoon.
.SUNDAY NIGHT...Southwest winds around 5 knots, becoming
northwest after midnight. Bay waters smooth. A chance of showers
and thunderstorms.
.MONDAY...Northeast winds around 5 knots, becoming southeast
around 5 knots in the afternoon. Bay waters smooth. A chance of
showers and thunderstorms.
.MONDAY NIGHT...South winds around 5 knots, becoming east after
midnight. 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.

$$

GMZ436-140700-
Atchafalaya and East Cote Blanche Bays-
104 PM CDT Wed Aug 13 2025

.TONIGHT...Southwest winds 5 to 10 knots. Bay waters light chop.
A slight chance of showers and thunderstorms early this evening.
A slight chance of showers and thunderstorms late.
.THURSDAY...Southwest winds around 5 knots. Bay waters smooth. A
chance of showers and thunderstorms.
.THURSDAY NIGHT...Southwest winds 5 to 10 knots. Bay waters light
chop. A chance of showers and thunderstorms, mainly in the
evening.
.FRIDAY...Southwest winds around 5 knots. Bay waters smooth. A
chance of showers and thunderstorms.
.FRIDAY NIGHT...South winds around 5 knots. Bay waters smooth.
.SATURDAY...North winds around 5 knots, becoming west in the
afternoon. Bay waters smooth. A chance of showers and
thunderstorms.
.SATURDAY NIGHT...Southwest winds around 5 knots. Bay waters
smooth. A slight chance of showers and thunderstorms after
midnight.
.SUNDAY...Northwest winds around 5 knots. Bay waters smooth. A
chance of showers and thunderstorms in the morning, then showers
and thunderstorms likely in the afternoon.
.SUNDAY NIGHT...Southwest winds around 5 knots, becoming
northwest after midnight. Bay waters smooth. A slight chance of
showers and thunderstorms in the evening, then a chance of
showers and thunderstorms after midnight.
.MONDAY...Northeast winds around 5 knots, becoming southeast in
the afternoon. Bay waters smooth. A chance of showers and
thunderstorms.
.MONDAY NIGHT...South winds around 5 knots, becoming east after
midnight. 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.

$$

GMZ450-140700-
Coastal waters from Cameron LA to High Island TX out 20 NM-
104 PM CDT Wed Aug 13 2025

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

$$

GMZ452-140700-
Coastal waters from Intracoastal City to Cameron LA out 20 NM-
104 PM CDT Wed Aug 13 2025

.TONIGHT...Southwest winds around 10 knots. Seas around 2 feet.
Wave Detail: South 2 feet at 4 seconds. A slight chance of
showers and thunderstorms early this evening. A slight chance of
showers and thunderstorms after midnight, then a chance of
showers and thunderstorms late.
.THURSDAY...Southwest winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: South 2 feet at 5 seconds. A chance of showers and
thunderstorms.
.THURSDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: South 2 feet at 4 seconds. A slight chance of
showers and thunderstorms in the evening, then a chance of
showers and thunderstorms after midnight.
.FRIDAY...South winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: South 1 foot at 5 seconds. A chance of showers and
thunderstorms.
.FRIDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: South 2 feet at 5 seconds. A slight chance of
showers and thunderstorms after midnight.
.SATURDAY...South winds around 5 knots. Seas around 2 feet. Wave
Detail: South 2 feet at 6 seconds. A chance of showers and
thunderstorms.
.SATURDAY NIGHT...Southwest winds around 5 knots. Seas around
2 feet. A slight chance of showers and thunderstorms after
midnight.
.SUNDAY...Northwest winds around 5 knots. Seas 1 foot or less. A
chance of showers and thunderstorms.
.SUNDAY NIGHT...West 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.
.MONDAY...North winds around 5 knots, becoming southeast in the
afternoon. Seas 1 foot or less. A chance of showers and
thunderstorms.
.MONDAY 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.

$$

GMZ455-140700-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA out 20 NM-
104 PM CDT Wed Aug 13 2025

.TONIGHT...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 early this evening. A slight chance of
showers and thunderstorms after midnight.
.THURSDAY...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.
.THURSDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or
less. Wave Detail: Southwest 1 foot at 4 seconds. A chance of
showers and thunderstorms after midnight.
.FRIDAY...South winds around 5 knots. Seas 1 foot or less. Wave
Detail: Southwest 1 foot at 3 seconds. A chance of showers and
thunderstorms.
.FRIDAY NIGHT...South winds around 5 knots. Seas 1 foot or less.
Wave Detail: South 1 foot at 4 seconds. A slight chance of
showers and thunderstorms after midnight.
.SATURDAY...Northwest winds around 5 knots, becoming southwest
around 5 knots in the afternoon. Seas 1 foot or less. Wave
Detail: South 1 foot at 6 seconds. A chance of showers and
thunderstorms.
.SATURDAY NIGHT...Southwest winds around 5 knots. Seas 1 foot or
less. A chance of showers and thunderstorms after midnight.
.SUNDAY...Northwest winds around 5 knots. Seas 1 foot or less. A
chance of thunderstorms. Showers likely, mainly in the morning.
.SUNDAY NIGHT...West 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.
.MONDAY...North winds around 5 knots, becoming southeast around
5 knots in the afternoon. Seas 1 foot or less. A chance of
thunderstorms. Showers likely, mainly in the morning.
.MONDAY 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.

$$

GMZ470-140700-
Coastal waters from Cameron LA to High Island TX from 20 to 60 NM-
104 PM CDT Wed Aug 13 2025

.TONIGHT...Southwest winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: South 2 feet at 5 seconds. A slight chance of
showers and thunderstorms after midnight.
.THURSDAY...Southwest winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: South 2 feet at 5 seconds. A chance of showers and
thunderstorms.
.THURSDAY NIGHT...South winds around 10 knots. Seas around
2 feet. Wave Detail: South 2 feet at 5 seconds. A chance of
showers with a slight chance of thunderstorms after midnight.
.FRIDAY...South winds around 10 knots. Seas around 2 feet. Wave
Detail: South 2 feet at 5 seconds. A chance of showers and
thunderstorms.
.FRIDAY NIGHT...Southeast winds around 10 knots. Seas 2 to
3 feet. Wave Detail: South 3 feet at 6 seconds. A chance of
showers and thunderstorms after midnight.
.SATURDAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: South 3 feet at 6 seconds. A chance of showers and
thunderstorms, mainly in the morning.
.SATURDAY NIGHT...South winds around 5 knots. Seas around 2 feet.
A slight chance of showers and thunderstorms after midnight.
.SUNDAY...Northwest winds around 5 knots, becoming northeast in
the afternoon. Seas around 2 feet. A chance of showers and
thunderstorms.
.SUNDAY NIGHT...South winds around 5 knots. Seas around 2 feet in
the evening, then 1 foot or less. A chance of showers and
thunderstorms after midnight.
.MONDAY...North winds around 5 knots, becoming northeast in the
afternoon. Seas 1 foot or less. A chance of showers and
thunderstorms.
.MONDAY 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.

$$

GMZ472-140700-
Coastal waters from Intracoastal City to Cameron LA from 20 to
60 NM-
104 PM CDT Wed Aug 13 2025

.TONIGHT...Southwest winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: South 2 feet at 5 seconds. A slight chance of
showers and thunderstorms after midnight.
.THURSDAY...Southwest winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: South 2 feet at 5 seconds. A chance of showers and
thunderstorms.
.THURSDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: South 2 feet at 5 seconds. A chance of showers and
thunderstorms after midnight.
.FRIDAY...South winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: South 2 feet at 5 seconds. A chance of showers and
thunderstorms.
.FRIDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: South 2 feet at 5 seconds. A slight chance of
showers and thunderstorms after midnight.
.SATURDAY...Southeast winds around 5 knots. Seas around 2 feet.
Wave Detail: South 2 feet at 6 seconds. A chance of showers and
thunderstorms, mainly in the morning.
.SATURDAY NIGHT...South winds around 5 knots. Seas around 2 feet.
A slight chance of showers and thunderstorms after midnight.
.SUNDAY...North winds 5 to 10 knots. Seas around 2 feet. A chance
of thunderstorms. Showers likely, mainly in the morning.
.SUNDAY NIGHT...West 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.
.MONDAY...Northeast winds around 5 knots. Seas 1 foot or less. A
chance of thunderstorms. Showers likely, mainly in the morning.
.MONDAY 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.

$$

GMZ475-140700-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA from 20 to 60 NM-
104 PM CDT Wed Aug 13 2025

.TONIGHT...Southwest winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: South 1 foot at 4 seconds. A slight chance of
showers this evening. A slight chance of thunderstorms. A chance
of showers after midnight.
.THURSDAY...Southwest winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: South 1 foot at 5 seconds. A chance of showers and
thunderstorms.
.THURSDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: Southwest 1 foot at 5 seconds. A chance of showers
and thunderstorms after midnight.
.FRIDAY...South winds around 5 knots. Seas around 2 feet. Wave
Detail: Southwest 1 foot at 5 seconds. A chance of showers and
thunderstorms.
.FRIDAY NIGHT...Southeast winds around 5 knots. Seas around
2 feet. Wave Detail: South 2 feet at 5 seconds. A slight chance
of showers and thunderstorms after midnight.
.SATURDAY...East winds around 5 knots. Seas around 2 feet. Wave
Detail: South 2 feet at 6 seconds. A chance of showers and
thunderstorms, mainly in the morning.
.SATURDAY NIGHT...Southeast winds around 5 knots, becoming
southwest after midnight. Seas around 2 feet. A slight chance of
showers and thunderstorms after midnight.
.SUNDAY...North winds 5 to 10 knots. Seas around 2 feet. A chance
of thunderstorms. Showers likely, mainly in the morning.
.SUNDAY NIGHT...North 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.
.MONDAY...Northeast winds around 5 knots. Seas 1 foot or less. A
chance of thunderstorms. Showers likely, mainly in the morning.
.MONDAY NIGHT...East 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.

$$