364
FZUS54 KLCH 042009
CWFLCH

Coastal Waters Forecast
National Weather Service Lake Charles LA
309 PM CDT Fri Sep 4 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.

GMZ400-050900-
309 PM CDT Fri Sep 4 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 mainly SE to S winds and low seas will prevail through the
end of the week and into the weekend. Scattered convection will
continue to be possible each day as well, as a steady stream of
moisture moves over the region.


$$

GMZ430-050900-
Sabine Lake-
309 PM CDT Fri Sep 4 2026

.TONIGHT...Southeast winds around 5 knots this evening, becoming
light and variable. Lake waters smooth. A chance of showers and
thunderstorms early this evening. A slight chance of showers and
thunderstorms late.
.SATURDAY...North winds around 5 knots, becoming southwest in the
afternoon. Lake waters smooth. A chance of showers and
thunderstorms in the morning, then showers with thunderstorms
likely in the afternoon.
.SATURDAY NIGHT...Light and variable winds, becoming west around
5 knots after midnight. Lake waters smooth. A chance of showers.
A chance of thunderstorms, mainly in the evening.
.SUNDAY...Light and variable winds, becoming southwest around
5 knots in the afternoon. Lake waters smooth. A chance of
thunderstorms. A chance of showers in the morning, then showers
likely in the afternoon.
.SUNDAY NIGHT...Southwest winds around 5 knots in the evening,
becoming light and variable. Lake waters smooth.
.MONDAY...Northwest winds around 5 knots, becoming south in the
afternoon. Lake waters smooth. A slight chance of showers and
thunderstorms in the morning, then a chance of showers and
thunderstorms in the afternoon.
.MONDAY NIGHT...Southwest winds around 5 knots. Lake waters
smooth. A slight chance of showers and thunderstorms after
midnight.
.TUESDAY...North winds around 5 knots, becoming southeast in the
afternoon. Lake waters smooth. A chance of showers and
thunderstorms.
.TUESDAY NIGHT...South winds around 5 knots. Lake waters smooth.
A slight chance of showers and thunderstorms after midnight.
.WEDNESDAY...Southeast winds around 5 knots. Lake waters smooth.
A chance of thunderstorms. A chance of showers in the morning,
then showers likely in the afternoon.
.WEDNESDAY 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.

$$

GMZ432-050900-
Calcasieu Lake-
309 PM CDT Fri Sep 4 2026

.TONIGHT...Southeast winds around 5 knots until early morning,
becoming light and variable. Lake waters smooth. A chance of
showers and thunderstorms early this evening. A chance of showers
and thunderstorms late.
.SATURDAY...Northeast winds around 5 knots, becoming northwest in
the afternoon. Lake waters smooth. A chance of showers and
thunderstorms in the morning, then showers with thunderstorms
likely in the afternoon.
.SATURDAY NIGHT...West winds around 5 knots. Lake waters smooth.
A chance of showers and thunderstorms in the evening, then a
chance of showers with a slight chance of thunderstorms after
midnight.
.SUNDAY...Northwest winds around 5 knots, becoming southwest in
the afternoon. Lake waters smooth. A chance of thunderstorms. A
chance of showers in the morning, then showers likely in the
afternoon.
.SUNDAY NIGHT...Southwest winds around 5 knots. Lake waters
smooth.
.MONDAY...Northwest winds around 5 knots, becoming southwest in
the afternoon. Lake waters smooth. A chance of showers and
thunderstorms in the afternoon.
.MONDAY NIGHT...Southwest winds around 5 knots. Lake waters
smooth. A slight chance of showers and thunderstorms.
.TUESDAY...Northeast winds around 5 knots, becoming south in the
afternoon. Lake waters light chop. A chance of showers and
thunderstorms.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Lake waters light
chop. A chance of showers with a slight chance of thunderstorms
after midnight.
.WEDNESDAY...Southeast winds 5 to 10 knots. Lake waters light
chop. A chance of thunderstorms. A chance of showers in the
morning, then showers likely in the afternoon.
.WEDNESDAY NIGHT...Southeast winds around 5 knots. Lake waters
smooth. A slight chance of showers and thunderstorms after
midnight.

Winds and waves higher in and near thunderstorms.

$$

GMZ435-050900-
Vermilion and West Cote Blanche Bays-
309 PM CDT Fri Sep 4 2026

.TONIGHT...South winds around 5 knots, becoming east late this
evening and early morning, then becoming light and variable late.
Bay waters smooth. A chance of showers and thunderstorms this
evening, then a chance of showers with a slight chance of
thunderstorms after midnight.
.SATURDAY...Northeast winds around 5 knots, becoming south in the
afternoon. Bay waters smooth. Showers likely. A chance of
thunderstorms in the morning, then thunderstorms likely in the
afternoon.
.SATURDAY NIGHT...Southwest 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.
.SUNDAY...Northwest winds around 5 knots, becoming southwest in
the afternoon. Bay waters smooth. A slight chance of showers and
thunderstorms in the morning, then a chance of showers and
thunderstorms in the afternoon.
.SUNDAY NIGHT...West winds around 5 knots. Bay waters smooth.
.MONDAY...Northwest winds around 5 knots, becoming southwest in
the afternoon. Bay waters smooth. A chance of showers and
thunderstorms.
.MONDAY NIGHT...Southwest winds around 5 knots. Bay waters
smooth. A slight chance of showers and thunderstorms after
midnight.
.TUESDAY...Northeast winds around 5 knots, becoming south in the
afternoon. Bay waters light chop. A chance of showers and
thunderstorms.
.TUESDAY NIGHT...Southeast winds around 5 knots. Bay waters
smooth. A slight chance of showers and thunderstorms.
.WEDNESDAY...Southeast winds around 5 knots. Bay waters smooth. A
chance of thunderstorms. A chance of showers in the morning, then
showers likely in the afternoon.
.WEDNESDAY NIGHT...Southeast winds around 5 knots. Bay waters
smooth. A slight chance of showers and thunderstorms.

Winds and waves higher in and near thunderstorms.

$$

GMZ436-050900-
Atchafalaya and East Cote Blanche Bays-
309 PM CDT Fri Sep 4 2026

.TONIGHT...Southeast winds around 5 knots this evening, becoming
light and variable. Bay waters smooth. A chance of showers.
.SATURDAY...North winds around 5 knots, becoming southwest in the
afternoon. Bay waters smooth. Showers likely with a chance of
thunderstorms.
.SATURDAY NIGHT...Southwest winds around 5 knots. Bay waters
smooth. A chance of showers and thunderstorms after midnight.
.SUNDAY...Northwest winds around 5 knots, becoming southwest in
the afternoon. Bay waters smooth. A chance of showers and
thunderstorms.
.SUNDAY NIGHT...West winds around 5 knots. Bay waters smooth.
.MONDAY...West winds around 5 knots. Bay waters smooth. A chance
of showers and thunderstorms.
.MONDAY NIGHT...Southwest winds around 5 knots. Bay waters
smooth. A slight chance of showers and thunderstorms.
.TUESDAY...Northeast winds around 5 knots, becoming south around
5 knots in the afternoon. Bay waters smooth. A chance of showers
and thunderstorms in the morning, then showers and thunderstorms
likely in the afternoon.
.TUESDAY 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.
.WEDNESDAY...Southeast winds around 5 knots. Bay waters smooth. A
chance of thunderstorms. A chance of showers in the morning, then
showers likely in the afternoon.
.WEDNESDAY NIGHT...Southeast winds around 5 knots. Bay waters
smooth. A slight chance of showers and thunderstorms.

Winds and waves higher in and near thunderstorms.

$$

GMZ450-050900-
Coastal waters from Cameron LA to High Island TX out 20 NM-
309 PM CDT Fri Sep 4 2026

.TONIGHT...Southeast winds 5 to 10 knots, becoming southwest
late. Seas 1 foot or less. Wave Detail: South 1 foot at
4 seconds. A slight chance of showers and thunderstorms late.
.SATURDAY...North winds around 5 knots, becoming southwest in the
afternoon. Seas 1 foot or less. Wave Detail: South 1 foot at
4 seconds. A chance of thunderstorms. Showers likely, mainly in
the morning.
.SATURDAY NIGHT...Southwest winds around 5 knots. Seas 1 foot or
less. Wave Detail: South 1 foot at 4 seconds. A chance of showers
and thunderstorms.
.SUNDAY...Northwest winds around 5 knots, becoming southwest in
the afternoon. Seas 1 foot or less. Wave Detail: Southwest 1 foot
at 4 seconds. A chance of thunderstorms. Showers likely, mainly
in the morning.
.SUNDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or
less. Wave Detail: South 1 foot at 4 seconds. A slight chance of
showers and thunderstorms after midnight.
.MONDAY...West winds around 5 knots, becoming south in the
afternoon. Seas 1 foot or less. Wave Detail: South 1 foot at
5 seconds. A slight chance of showers and thunderstorms.
.MONDAY NIGHT...South winds 5 to 10 knots. Seas 1 foot or less. A
slight chance of showers and thunderstorms after midnight.
.TUESDAY...South winds 5 to 10 knots. Seas 1 foot or less. A
chance of showers and thunderstorms.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet. A chance of showers and thunderstorms after midnight.
.WEDNESDAY...Southeast winds 5 to 10 knots. Seas 1 foot or less.
A chance of thunderstorms. Showers likely, mainly in the morning.
.WEDNESDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet.
A chance of showers with a slight chance of thunderstorms after
midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ452-050900-
Coastal waters from Intracoastal City to Cameron LA out 20 NM-
309 PM CDT Fri Sep 4 2026

.TONIGHT...Southeast winds around 5 knots, becoming southwest
around 5 knots late. Seas 1 foot or less. Wave Detail: South
1 foot 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.
.SATURDAY...North winds around 5 knots, becoming southwest in the
afternoon. Seas 1 foot or less. Wave Detail: Southwest 1 foot at
4 seconds. A chance of thunderstorms. Showers likely.
.SATURDAY NIGHT...West winds around 5 knots. Seas 1 foot or less.
Wave Detail: Southwest 1 foot at 4 seconds. A chance of showers
and thunderstorms after midnight.
.SUNDAY...Northwest winds around 5 knots, becoming southwest
around 5 knots in the afternoon. Seas 1 foot or less. Wave
Detail: Southwest 1 foot at 4 seconds. A chance of showers and
thunderstorms.
.SUNDAY 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 after midnight.
.MONDAY...Northwest winds around 5 knots, becoming southwest in
the afternoon. Seas 1 foot or less. A chance of showers and
thunderstorms, mainly in the morning.
.MONDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or
less. A slight chance of showers and thunderstorms.
.TUESDAY...South winds 5 to 10 knots. Seas 1 foot or less. A
chance of showers and thunderstorms.
.TUESDAY NIGHT...Southeast 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.
.WEDNESDAY...Southeast winds 5 to 10 knots. Seas 1 foot or less.
A chance of thunderstorms. A chance of showers in the morning,
then showers likely in the afternoon.
.WEDNESDAY NIGHT...Southeast 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.

Winds and seas higher in and near thunderstorms.

$$

GMZ455-050900-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA out 20 NM-
309 PM CDT Fri Sep 4 2026

.TONIGHT...Southeast winds around 5 knots this evening, becoming
light and variable, then becoming southwest around 5 knots late.
Seas 1 foot or less. A chance of showers and thunderstorms.
.SATURDAY...North winds around 5 knots, becoming southwest around
5 knots in the afternoon. Seas 1 foot or less. A chance of
thunderstorms. Showers, mainly in the morning.
.SATURDAY NIGHT...Southwest winds around 5 knots. Seas 1 foot or
less. A chance of showers and thunderstorms after midnight.
.SUNDAY...West winds around 5 knots. Seas 1 foot or less. A
chance of showers and thunderstorms, mainly in the morning.
.SUNDAY NIGHT...Southwest winds around 5 knots. Seas 1 foot or
less. Wave Detail: West 1 foot at 2 seconds.
.MONDAY...West winds around 5 knots. Seas 1 foot or less. Wave
Detail: West 1 foot at 2 seconds. A chance of showers and
thunderstorms, mainly in the morning.
.MONDAY NIGHT...Southwest winds around 5 knots. Seas 1 foot or
less. A slight chance of showers and thunderstorms.
.TUESDAY...South winds around 5 knots. Seas 1 foot or less. A
chance of showers and thunderstorms.
.TUESDAY NIGHT...Southeast 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.
.WEDNESDAY...East winds 5 to 10 knots. Seas 1 foot or less. A
chance of thunderstorms. A chance of showers in the morning, then
showers likely in the afternoon.
.WEDNESDAY 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.

$$

GMZ470-050900-
Coastal waters from Cameron LA to High Island TX from 20 to 60 NM-
309 PM CDT Fri Sep 4 2026

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

Winds and seas higher in and near thunderstorms.

$$

GMZ472-050900-
Coastal waters from Intracoastal City to Cameron LA from 20 to
60 NM-
309 PM CDT Fri Sep 4 2026

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

Winds and seas higher in and near thunderstorms.

$$

GMZ475-050900-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA from 20 to 60 NM-
309 PM CDT Fri Sep 4 2026

.TONIGHT...Southeast winds around 5 knots, becoming southwest
around 5 knots late. Seas 1 foot or less. Wave Detail: East
1 foot at 5 seconds. A slight chance of showers and thunderstorms
until early morning, then a chance of showers and thunderstorms
late.
.SATURDAY...West winds around 5 knots. Seas 1 foot or less. Wave
Detail: Southeast 1 foot at 5 seconds. A chance of thunderstorms.
Showers likely, mainly in the morning.
.SATURDAY NIGHT...Southwest winds around 5 knots. Seas 1 foot or
less. Wave Detail: Southwest 1 foot at 2 seconds and southeast
1 foot at 5 seconds. A chance of showers and thunderstorms after
midnight.
.SUNDAY...West winds around 5 knots. Seas 1 foot or less. Wave
Detail: West 1 foot at 2 seconds and south 1 foot at 5 seconds. A
chance of showers and thunderstorms in the morning.
.SUNDAY NIGHT...Southwest winds around 5 knots. Seas 1 foot or
less. Wave Detail: West 1 foot at 2 seconds and south 1 foot at
6 seconds.
.MONDAY...West winds around 5 knots. Seas 1 foot or less. Wave
Detail: West 1 foot at 2 seconds and south 1 foot at 5 seconds. A
chance of showers and thunderstorms, mainly in the morning.
.MONDAY NIGHT...Southwest winds around 5 knots. Seas 1 foot or
less. A slight chance of showers and thunderstorms.
.TUESDAY...Southeast winds around 5 knots. Seas 1 foot or less. A
chance of showers and thunderstorms.
.TUESDAY NIGHT...Southeast 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.
.WEDNESDAY...East winds around 5 knots. Seas 1 foot or less. A
chance of thunderstorms. Showers likely, mainly in the morning.
.WEDNESDAY 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.

$$