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FZUS54 KLCH 300809
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Coastal Waters Forecast
National Weather Service Lake Charles LA
308 AM CDT Thu Jul 30 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.

GMZ400-302100-
308 AM CDT Thu Jul 30 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 winds and low seas are anticipated through Saturday.
A weak boundary will drift to near the northern gulf coast Saturday
night into Sunday which will increase winds to 15-20 knots over the
coastal waters. The boundary will also increase thunderstorm
chances. Light southerly flow becomes reestablished Monday through
the rest of the week.

$$

GMZ430-302100-
Sabine Lake-
308 AM CDT Thu Jul 30 2026

.TODAY...Southwest winds 5 to 10 knots. Lake waters light chop.
.TONIGHT...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 around 10 knots. Lake waters
light chop.
.SATURDAY...West winds 10 to 15 knots. Lake waters choppy.
.SATURDAY NIGHT...Southwest winds 10 to 15 knots. Lake waters
choppy. A chance of showers and thunderstorms after midnight.
.SUNDAY...West winds 5 to 10 knots. Lake waters light chop. A
chance of showers and thunderstorms, mainly in the morning.
.SUNDAY NIGHT...Southwest winds 5 to 10 knots. Lake waters light
chop. A slight chance of showers and thunderstorms after
midnight.
.MONDAY...Northwest winds around 5 knots, becoming southwest in
the afternoon. Lake waters light chop. A slight chance of showers
and thunderstorms in the afternoon.
.MONDAY NIGHT...South winds 5 to 10 knots. Lake waters light
chop.

Winds and waves higher in and near thunderstorms.

$$

GMZ432-302100-
Calcasieu Lake-
308 AM CDT Thu Jul 30 2026

.TODAY...West winds 5 to 10 knots, becoming southwest late. Lake
waters light chop.
.TONIGHT...Southwest winds 10 to 15 knots, diminishing to 5 to
10 knots after midnight. Lake waters choppy.
.FRIDAY...Southwest winds 5 to 10 knots, increasing to 10 to
15 knots with gusts up to 20 knots in the afternoon. Lake waters
choppy.
.FRIDAY NIGHT...Southwest winds 10 to 15 knots with gusts up to
20 knots. Lake waters choppy.
.SATURDAY...West winds 10 to 15 knots with gusts up to 20 knots.
Lake waters choppy.
.SATURDAY NIGHT...Southwest winds 10 to 15 knots with gusts up to
20 knots. Lake waters choppy. Showers and thunderstorms likely
after midnight.
.SUNDAY...West winds 10 to 15 knots. Lake waters choppy. A chance
of showers and thunderstorms, mainly in the morning.
.SUNDAY NIGHT...Southwest winds 5 to 10 knots. Lake waters light
chop. A slight chance of showers and thunderstorms.
.MONDAY...West winds 5 to 10 knots, becoming southwest in the
afternoon. Lake waters light chop. A slight chance of showers and
thunderstorms.
.MONDAY NIGHT...Southwest winds 5 to 10 knots. Lake waters light
chop.

Winds and waves higher in and near thunderstorms.

$$

GMZ435-302100-
Vermilion and West Cote Blanche Bays-
308 AM CDT Thu Jul 30 2026

.TODAY...West winds 5 to 10 knots, becoming southwest 10 to
15 knots late. Bay waters choppy. A slight chance of showers and
thunderstorms this afternoon.
.TONIGHT...Southwest winds 10 to 15 knots. Bay waters choppy.
.FRIDAY...Southwest winds 10 to 15 knots. Bay waters choppy.
.FRIDAY NIGHT...Southwest winds 10 to 15 knots. Bay waters
choppy.
.SATURDAY...West winds 15 to 20 knots. Bay waters rough.
.SATURDAY NIGHT...Southwest winds 15 to 20 knots. Bay waters
rough. Showers and thunderstorms likely after midnight.
.SUNDAY...West winds 10 to 15 knots. Bay waters choppy. Showers
and thunderstorms likely, mainly in the morning.
.SUNDAY NIGHT...West winds 5 to 10 knots. Bay waters light chop.
A chance of showers and thunderstorms.
.MONDAY...West winds 5 to 10 knots, becoming southwest in the
afternoon. Bay waters light chop. A chance of showers and
thunderstorms.
.MONDAY NIGHT...Southwest winds 5 to 10 knots. Bay waters light
chop.

Winds and waves higher in and near thunderstorms.

$$

GMZ436-302100-
Atchafalaya and East Cote Blanche Bays-
308 AM CDT Thu Jul 30 2026

.TODAY...West winds 5 to 10 knots. Bay waters light chop.
.TONIGHT...Southwest winds 5 to 10 knots. Bay waters light chop.
.FRIDAY...Southwest winds around 10 knots. Bay waters light chop.
.FRIDAY NIGHT...Southwest winds 10 to 15 knots. Bay waters
choppy.
.SATURDAY...West winds 10 to 15 knots with gusts up to 20 knots.
Bay waters choppy.
.SATURDAY NIGHT...West winds 15 to 20 knots. Bay waters rough.
Showers and thunderstorms likely after midnight.
.SUNDAY...West winds 10 to 15 knots. Bay waters choppy. Showers
with thunderstorms likely in the morning, then a chance of
showers and thunderstorms in the afternoon.
.SUNDAY NIGHT...West winds 5 to 10 knots. Bay waters light chop.
A chance of showers and thunderstorms.
.MONDAY...West winds 5 to 10 knots. Bay waters light chop. A
chance of showers and thunderstorms, mainly in the morning.
.MONDAY NIGHT...Southwest winds 5 to 10 knots. Bay waters light
chop. A slight chance of showers and thunderstorms after
midnight.

Winds and waves higher in and near thunderstorms.

$$

GMZ450-302100-
Coastal waters from Cameron LA to High Island TX out 20 NM-
308 AM CDT Thu Jul 30 2026

.TODAY...Southwest winds 10 to 15 knots. Seas around 2 feet. Wave
Detail: Southwest 2 feet at 4 seconds.
.TONIGHT...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 15 to 20 knots. Seas 2 to 3 feet.
Wave Detail: Southwest 3 feet at 4 seconds.
.SATURDAY...Southwest winds 15 to 20 knots. Seas 2 to 3 feet.
Wave Detail: Southwest 3 feet at 4 seconds.
.SATURDAY NIGHT...Southwest winds around 20 knots with gusts up
to 25 knots. Seas 3 to 4 feet. Wave Detail: Southwest 4 feet at
5 seconds. A chance of showers and thunderstorms after midnight.
.SUNDAY...West winds 15 to 20 knots, diminishing to 10 to
15 knots in the afternoon. Seas 2 to 4 feet. A chance of showers
and thunderstorms, mainly in the morning.
.SUNDAY NIGHT...Southwest winds 10 to 15 knots. Seas 2 to 3 feet.
A slight chance of showers and thunderstorms in the evening, then
a chance of showers and thunderstorms after midnight.
.MONDAY...West winds 10 to 15 knots, becoming southwest in the
afternoon. Seas 2 to 3 feet. A slight chance of showers and
thunderstorms in the morning.
.MONDAY NIGHT...Southwest winds 10 to 15 knots. Seas around
2 feet.

Winds and seas higher in and near thunderstorms.

$$

GMZ452-302100-
Coastal waters from Intracoastal City to Cameron LA out 20 NM-
308 AM CDT Thu Jul 30 2026

.TODAY...West winds 10 to 15 knots. Seas around 2 feet. Wave
Detail: Southwest 2 feet at 4 seconds.
.TONIGHT...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, increasing to
15 to 20 knots after midnight. Seas 2 to 3 feet. Wave Detail:
Southwest 3 feet at 4 seconds.
.SATURDAY...West winds 15 to 20 knots with gusts up to 25 knots.
Seas 3 to 4 feet. Wave Detail: Southwest 4 feet at 4 seconds.
.SATURDAY NIGHT...Southwest winds around 20 knots with gusts up
to 25 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave
Detail: Southwest 4 feet at 5 seconds. Showers and thunderstorms
likely after midnight.
.SUNDAY...West winds 15 to 20 knots. Seas 3 to 5 feet,
occasionally to 6 feet, subsiding to 2 to 3 feet in the
afternoon. Showers and thunderstorms likely, mainly in the
morning.
.SUNDAY NIGHT...Southwest winds 10 to 15 knots. Seas 2 to 3 feet.
A slight chance of showers and thunderstorms in the evening, then
a chance of showers and thunderstorms after midnight.
.MONDAY...West winds 10 to 15 knots. Seas 2 to 3 feet. A chance
of showers and thunderstorms, mainly in the morning.
.MONDAY NIGHT...Southwest winds 10 to 15 knots. Seas around
2 feet.

Winds and seas higher in and near thunderstorms.

$$

GMZ455-302100-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA out 20 NM-
308 AM CDT Thu Jul 30 2026

.TODAY...West winds 5 to 10 knots. Seas around 2 feet this
morning, then 1 foot or less. Wave Detail: West 2 feet at
3 seconds, becoming west 1 foot at 3 seconds.
.TONIGHT...Southwest winds around 10 knots. Seas 1 foot or less,
then around 2 feet after midnight. Wave Detail: Southwest 1 foot
at 3 seconds.
.FRIDAY...Southwest winds around 10 knots. Seas around 2 feet in
the morning, then 1 foot or less. Wave Detail: Southwest 2 feet
at 3 seconds, becoming southwest 1 foot at 3 seconds.
.FRIDAY NIGHT...Southwest winds 10 to 15 knots. Seas around
2 feet. Wave Detail: Southwest 2 feet at 3 seconds.
.SATURDAY...West winds around 15 knots with gusts up to 20 knots.
Seas 2 to 3 feet. Wave Detail: Southwest 2 feet at 4 seconds.
.SATURDAY NIGHT...Southwest winds 15 to 20 knots. Seas 2 to
4 feet. Wave Detail: Southwest 3 feet at 4 seconds. Showers and
thunderstorms likely after midnight.
.SUNDAY...West winds 15 to 20 knots. Seas 2 to 4 feet. Showers
with thunderstorms likely in the morning, then a chance of
showers and thunderstorms in the afternoon.
.SUNDAY NIGHT...West winds 10 to 15 knots. Seas 2 to 3 feet. A
chance of thunderstorms. A chance of showers in the evening, then
showers likely after midnight.
.MONDAY...West winds 5 to 10 knots. Seas around 2 feet. A chance
of showers and thunderstorms, mainly in the morning.
.MONDAY NIGHT...Southwest winds 5 to 10 knots. Seas around
2 feet. A slight chance of showers and thunderstorms after
midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ470-302100-
Coastal waters from Cameron LA to High Island TX from 20 to 60 NM-
308 AM CDT Thu Jul 30 2026

.TODAY...Southwest winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southwest 2 feet at 5 seconds.
.TONIGHT...Southwest winds 10 to 15 knots. Seas around 2 feet.
Wave Detail: Southwest 2 feet at 5 seconds.
.FRIDAY...Southwest winds around 10 knots. Seas around 2 feet.
Wave Detail: Southwest 2 feet at 4 seconds.
.FRIDAY NIGHT...Southwest winds 10 to 15 knots. Seas 2 to 3 feet.
Wave Detail: South 2 feet at 5 seconds.
.SATURDAY...Southwest winds around 15 knots with gusts up to
20 knots. Seas around 3 feet. Wave Detail: South 3 feet at
5 seconds.
.SATURDAY NIGHT...Southwest winds 15 to 20 knots with gusts up to
25 knots. Seas 3 to 4 feet. Wave Detail: Southwest 4 feet at
5 seconds. A chance of showers and thunderstorms after midnight.
.SUNDAY...West winds 15 to 20 knots, diminishing to 10 to
15 knots in the afternoon. Seas 3 to 4 feet. Showers likely with
a chance of thunderstorms in the morning, then a slight chance of
showers and thunderstorms in the afternoon.
.SUNDAY NIGHT...Southwest winds 10 to 15 knots. Seas around
3 feet. A chance of showers and thunderstorms after midnight.
.MONDAY...Southwest winds 10 to 15 knots. Seas 2 to 3 feet. A
slight chance of showers and thunderstorms in the morning.
.MONDAY NIGHT...South winds 10 to 15 knots. Seas around 2 feet.

Winds and seas higher in and near thunderstorms.

$$

GMZ472-302100-
Coastal waters from Intracoastal City to Cameron LA from 20 to
60 NM-
308 AM CDT Thu Jul 30 2026

.TODAY...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 late this morning.
.TONIGHT...Southwest winds around 10 knots. Seas around 2 feet.
Wave Detail: Southwest 2 feet at 5 seconds.
.FRIDAY...Southwest winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southwest 2 feet at 5 seconds.
.FRIDAY NIGHT...Southwest winds 10 to 15 knots. Seas 2 to 3 feet.
Wave Detail: Southwest 2 feet at 5 seconds.
.SATURDAY...West winds around 15 knots with gusts up to 20 knots.
Seas 2 to 3 feet. Wave Detail: South 3 feet at 5 seconds.
.SATURDAY NIGHT...Southwest winds 15 to 20 knots with gusts up to
25 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail:
South 5 feet at 6 seconds. A chance of showers and thunderstorms
after midnight.
.SUNDAY...West winds 15 to 20 knots. Seas 3 to 5 feet,
occasionally to 6 feet. Showers with thunderstorms likely in the
morning, then a slight chance of showers and thunderstorms in the
afternoon.
.SUNDAY NIGHT...Southwest winds 10 to 15 knots. Seas around
3 feet. A slight chance of showers and thunderstorms in the
evening, then a chance of showers and thunderstorms after
midnight.
.MONDAY...West winds 10 to 15 knots, becoming southwest 5 to
10 knots in the afternoon. Seas 2 to 3 feet. A chance of showers
and thunderstorms in the morning.
.MONDAY NIGHT...Southwest winds around 10 knots. Seas around
2 feet.

Winds and seas higher in and near thunderstorms.

$$

GMZ475-302100-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA from 20 to 60 NM-
308 AM CDT Thu Jul 30 2026

.TODAY...West winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: West 2 feet at 5 seconds. A slight chance of showers and
thunderstorms late this morning.
.TONIGHT...Southwest winds around 10 knots. Seas around 2 feet.
Wave Detail: Southwest 2 feet at 4 seconds.
.FRIDAY...Southwest winds around 10 knots. Seas around 2 feet.
Wave Detail: Southwest 2 feet at 4 seconds.
.FRIDAY NIGHT...Southwest winds 10 to 15 knots. Seas 2 to 3 feet.
Wave Detail: Southwest 2 feet at 5 seconds.
.SATURDAY...West winds around 15 knots with gusts up to 20 knots.
Seas 2 to 3 feet. Wave Detail: Southwest 3 feet at 5 seconds. A
slight chance of showers and thunderstorms in the afternoon.
.SATURDAY NIGHT...Southwest winds 15 to 20 knots with gusts up to
25 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail:
Southwest 5 feet at 6 seconds. A chance of showers and
thunderstorms after midnight.
.SUNDAY...West winds 15 to 20 knots. Seas 3 to 5 feet,
occasionally to 6 feet. Showers with thunderstorms likely in the
morning, then a chance of showers and thunderstorms in the
afternoon.
.SUNDAY NIGHT...Southwest winds 10 to 15 knots. Seas 3 to 4 feet.
A chance of thunderstorms. A chance of showers in the evening,
then showers likely after midnight.
.MONDAY...West winds 10 to 15 knots. Seas 2 to 3 feet. A chance
of showers and thunderstorms, mainly in the morning.
.MONDAY NIGHT...Southwest winds 10 to 15 knots. Seas around
2 feet. A slight chance of showers and thunderstorms after
midnight.

Winds and seas higher in and near thunderstorms.

$$