857
FZUS54 KLCH 291752
CWFLCH

Coastal Waters Forecast
National Weather Service Lake Charles LA
1252 PM CDT Tue Jul 29 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.

GMZ400-300600-
1252 PM CDT Tue Jul 29 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...

Hot and dry conditions to continue through early Wednesday under
high pressure influence. High begins breaking down from east to
west on Wednesday afternoon allowing for moisture and rain chances
to return from the east. Elevated daytime rain chances will
continue thereafter.

Seas should remain relatively low through the period, however with
short wave periods, waters out to the south of central Louisiana
may become rather choppy later in the week.

$$

GMZ430-300600-
Sabine Lake-
1252 PM CDT Tue Jul 29 2025

.TONIGHT...Southwest winds around 5 knots. Lake waters smooth.
.WEDNESDAY...West winds around 5 knots. Lake waters smooth. A
chance of showers and thunderstorms.
.WEDNESDAY NIGHT...Southwest winds around 5 knots. Lake waters
smooth. A slight chance of showers and thunderstorms in the
evening, then a chance of showers and thunderstorms after
midnight.
.THURSDAY...West winds around 5 knots. Lake waters smooth. A
chance of showers and thunderstorms, mainly in the morning.
.THURSDAY NIGHT...Southwest winds 5 to 10 knots. Lake waters
light chop. A slight chance of showers and thunderstorms after
midnight.
.FRIDAY...West winds around 5 knots. Lake waters smooth. A chance
of showers and thunderstorms.
.FRIDAY NIGHT...Southwest winds around 5 knots, becoming
northwest after midnight. Lake waters smooth. A chance of showers
and thunderstorms.
.SATURDAY...North winds around 5 knots, becoming west around
5 knots in the afternoon. Lake waters smooth. A chance of showers
and thunderstorms in the morning, then showers and thunderstorms
likely in the afternoon.
.SATURDAY NIGHT...West winds around 5 knots, becoming north after
midnight. Lake waters smooth. A chance of showers and
thunderstorms.
.SUNDAY...North winds around 5 knots, becoming west around
5 knots in the afternoon. Lake waters smooth. A chance of showers
and thunderstorms.
.SUNDAY NIGHT...Southwest winds around 5 knots. Lake waters
smooth. A slight chance of showers and thunderstorms after
midnight.

Winds and waves higher in and near thunderstorms.

$$

GMZ432-300600-
Calcasieu Lake-
1252 PM CDT Tue Jul 29 2025

.TONIGHT...West winds around 5 knots. Lake waters smooth. A
slight chance of showers and thunderstorms late.
.WEDNESDAY...West winds around 5 knots. Lake waters smooth. A
chance of showers and thunderstorms.
.WEDNESDAY NIGHT...Southwest winds around 5 knots. Lake waters
smooth. A slight chance of showers and thunderstorms in the
evening, then a chance of showers and thunderstorms after
midnight.
.THURSDAY...West winds 5 to 10 knots. Lake waters light chop. A
chance of showers and thunderstorms, mainly in the morning.
.THURSDAY NIGHT...Southwest winds 5 to 10 knots. Lake waters
light chop. A slight chance of showers and thunderstorms after
midnight.
.FRIDAY...West winds 5 to 10 knots. Lake waters light chop. A
chance of showers and thunderstorms.
.FRIDAY NIGHT...Southwest winds 5 to 10 knots, becoming west
after midnight. Lake waters light chop. A chance of showers and
thunderstorms.
.SATURDAY...North winds around 5 knots, becoming west in the
afternoon. Lake waters smooth. A chance of showers and
thunderstorms in the morning, then showers and thunderstorms
likely in the afternoon.
.SATURDAY NIGHT...West winds around 5 knots, becoming north after
midnight. Lake waters smooth. A chance of showers and
thunderstorms.
.SUNDAY...North winds around 5 knots, becoming west in the
afternoon. Lake waters smooth. A chance of showers and
thunderstorms.
.SUNDAY NIGHT...Southwest winds around 5 knots. Lake waters
smooth. A slight chance of showers and thunderstorms after
midnight.

Winds and waves higher in and near thunderstorms.

$$

GMZ435-300600-
Vermilion and West Cote Blanche Bays-
1252 PM CDT Tue Jul 29 2025

.TONIGHT...West winds 5 to 10 knots. Bay waters light chop. A
slight chance of showers and thunderstorms until early morning,
then showers and thunderstorms likely late.
.WEDNESDAY...Northwest winds 5 to 10 knots, becoming southwest in
the afternoon. Bay waters light chop. A chance of thunderstorms.
Showers likely, mainly in the morning.
.WEDNESDAY NIGHT...Southwest winds 5 to 10 knots. Bay waters
light chop. A chance of showers and thunderstorms.
.THURSDAY...West winds 5 to 10 knots. Bay waters light chop.
Showers and thunderstorms likely, mainly in the morning.
.THURSDAY NIGHT...Southwest winds 5 to 10 knots. Bay waters light
chop. A chance of showers and thunderstorms after midnight.
.FRIDAY...West winds 5 to 10 knots. Bay waters light chop.
Showers and thunderstorms likely.
.FRIDAY NIGHT...West winds 5 to 10 knots. Bay waters light chop.
A chance of showers and thunderstorms.
.SATURDAY...Northwest 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.
.SATURDAY NIGHT...Northwest winds around 5 knots. Bay waters
smooth. A chance of showers and thunderstorms.
.SUNDAY...North winds around 5 knots, becoming west in the
afternoon. Bay waters smooth. A chance of showers and
thunderstorms in the morning, then showers and thunderstorms
likely in the afternoon.
.SUNDAY NIGHT...West winds around 5 knots. Bay waters smooth. A
slight chance of thunderstorms. A slight chance of showers in the
evening, then a chance of showers after midnight.

Winds and waves higher in and near thunderstorms.

$$

GMZ436-300600-
Atchafalaya and East Cote Blanche Bays-
1252 PM CDT Tue Jul 29 2025

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

$$

GMZ450-300600-
Coastal waters from Cameron LA to High Island TX out 20 NM-
1252 PM CDT Tue Jul 29 2025

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

Winds and seas higher in and near thunderstorms.

$$

GMZ452-300600-
Coastal waters from Intracoastal City to Cameron LA out 20 NM-
1252 PM CDT Tue Jul 29 2025

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

Winds and seas higher in and near thunderstorms.

$$

GMZ455-300600-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA out 20 NM-
1252 PM CDT Tue Jul 29 2025

.TONIGHT...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 this evening, then showers and thunderstorms likely
after midnight.
.WEDNESDAY...West winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: West 1 foot at 3 seconds. Showers and thunderstorms
likely, mainly in the morning.
.WEDNESDAY NIGHT...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 in the evening, then showers and thunderstorms
likely after midnight.
.THURSDAY...West winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: Southwest 1 foot at 3 seconds. Showers and thunderstorms
likely, mainly in the morning.
.THURSDAY 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.
.FRIDAY...West winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: West 1 foot at 3 seconds. Showers and thunderstorms
likely, mainly in the morning.
.FRIDAY NIGHT...West 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.
.SATURDAY...Northwest winds 5 to 10 knots. Seas 1 foot or less. A
chance of thunderstorms. Showers likely, mainly in the morning.
.SATURDAY NIGHT...Northwest winds 5 to 10 knots. Seas 1 foot or
less. A chance of thunderstorms. A chance of showers in the
evening, then showers likely after midnight.
.SUNDAY...Northwest winds 5 to 10 knots, becoming west in the
afternoon. 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.

Winds and seas higher in and near thunderstorms.

$$

GMZ470-300600-
Coastal waters from Cameron LA to High Island TX from 20 to 60 NM-
1252 PM CDT Tue Jul 29 2025

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

Winds and seas higher in and near thunderstorms.

$$

GMZ472-300600-
Coastal waters from Intracoastal City to Cameron LA from 20 to
60 NM-
1252 PM CDT Tue Jul 29 2025

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

Winds and seas higher in and near thunderstorms.

$$

GMZ475-300600-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA from 20 to 60 NM-
1252 PM CDT Tue Jul 29 2025

.TONIGHT...West winds 5 to 10 knots. Seas around 2 feet this
evening, then 1 foot or less. Wave Detail: Northwest 1 foot at
4 seconds and southeast 1 foot at 6 seconds, becoming west 1 foot
at 3 seconds and southeast 1 foot at 6 seconds. A chance of
showers and thunderstorms this evening. Showers and thunderstorms
likely after midnight.
.WEDNESDAY...West winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Northwest 1 foot at 3 seconds and southeast 1 foot at
5 seconds. Thunderstorms likely. Showers likely, mainly in the
morning.
.WEDNESDAY NIGHT...West winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: West 1 foot at 4 seconds. A slight chance of showers
and thunderstorms in the evening, then a chance of showers and
thunderstorms after midnight.
.THURSDAY...West winds 5 to 10 knots. Seas around 2 feet in the
morning, then 1 foot or less. Wave Detail: West 1 foot at
4 seconds. Showers and thunderstorms likely, mainly in the
morning.
.THURSDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or
less. Wave Detail: West 1 foot at 4 seconds. A chance of showers
with a slight chance of thunderstorms after midnight.
.FRIDAY...West winds 5 to 10 knots. Seas around 2 feet in the
morning, then 1 foot or less. Wave Detail: West 1 foot at
3 seconds. Showers and thunderstorms likely, mainly in the
morning.
.FRIDAY NIGHT...West winds 5 to 10 knots. Seas 1 foot or less. A
chance of showers and thunderstorms after midnight.
.SATURDAY...Northwest winds 5 to 10 knots. Seas 1 foot or less. A
chance of thunderstorms. Showers likely, mainly in the morning.
.SATURDAY NIGHT...West 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.
.SUNDAY...Northwest winds 5 to 10 knots. Seas 1 foot or less. A
chance of thunderstorms. Showers likely, mainly in the morning.
.SUNDAY NIGHT...West 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.

$$