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FZUS54 KLCH 161803
CWFLCH

Coastal Waters Forecast
National Weather Service Lake Charles LA
103 PM CDT Tue Sep 16 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.

GMZ400-170700-
103 PM CDT Tue Sep 16 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...

Winds and seas will generally remain low through the period. There
may be brief periods of outer waters enhancing to 2 to 3 ft as
easterly flow increases on passing waves. Rain chances also
increase from the south later in the period as upper level
patterns become a bit more active.

$$

GMZ430-170700-
Sabine Lake-
103 PM CDT Tue Sep 16 2025

.TONIGHT...Southwest winds around 5 knots. Lake waters smooth. A
slight chance of showers and thunderstorms early this evening.
.WEDNESDAY...North winds around 5 knots, becoming southeast in
the afternoon. Lake waters smooth. A slight chance of showers. A
slight chance of thunderstorms in the late morning and afternoon.
.WEDNESDAY NIGHT...South winds around 5 knots. Lake waters
smooth. A slight chance of showers and thunderstorms early in the
evening.
.THURSDAY...Northeast winds around 5 knots, becoming southeast in
the afternoon. Lake waters light chop.
.THURSDAY NIGHT...Southeast winds 5 to 10 knots, diminishing to
around 5 knots after midnight. Lake waters light chop.
.FRIDAY...East winds 5 to 10 knots. Lake waters light chop.
.FRIDAY NIGHT...Southeast winds around 5 knots. Lake waters
smooth.
.SATURDAY...Northeast winds around 5 knots, becoming southeast in
the afternoon. Lake waters light chop. A slight chance of showers
and thunderstorms in the afternoon.
.SATURDAY NIGHT...South winds 5 to 10 knots, becoming southeast
after midnight. Lake waters light chop. A slight chance of
showers and thunderstorms early in the evening.
.SUNDAY...Southeast winds 5 to 10 knots. Lake waters light chop.
A slight chance of showers and thunderstorms.
.SUNDAY NIGHT...South winds 5 to 10 knots. Lake waters light
chop. A slight chance of showers and thunderstorms early in the
evening.

Winds and waves higher in and near thunderstorms.

$$

GMZ432-170700-
Calcasieu Lake-
103 PM CDT Tue Sep 16 2025

.TONIGHT...South winds around 5 knots. Lake waters smooth. A
slight chance of showers and thunderstorms early this evening.
.WEDNESDAY...North winds around 5 knots, becoming south in the
afternoon. Lake waters smooth. A slight chance of showers. A
slight chance of thunderstorms in the late morning and afternoon.
.WEDNESDAY NIGHT...South winds around 5 knots. Lake waters
smooth. A slight chance of showers and thunderstorms early in the
evening.
.THURSDAY...Northeast winds around 5 knots, becoming southeast in
the afternoon. Lake waters light chop.
.THURSDAY NIGHT...Southeast winds 5 to 10 knots. Lake waters
light chop.
.FRIDAY...East winds 5 to 10 knots. Lake waters light chop.
.FRIDAY NIGHT...Southeast winds 5 to 10 knots. Lake waters light
chop.
.SATURDAY...Northeast winds around 5 knots, becoming southeast in
the afternoon. Lake waters light chop. A slight chance of showers
and thunderstorms in the afternoon.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Lake waters
light chop.
.SUNDAY...Southeast winds 5 to 10 knots. Lake waters light chop.
A slight chance of showers and thunderstorms in the afternoon.
.SUNDAY NIGHT...South winds 5 to 10 knots. Lake waters light
chop. A slight chance of showers and thunderstorms early in the
evening.

Winds and waves higher in and near thunderstorms.

$$

GMZ435-170700-
Vermilion and West Cote Blanche Bays-
103 PM CDT Tue Sep 16 2025

.TONIGHT...South winds around 5 knots. Bay waters smooth. A
slight chance of showers and thunderstorms early this evening.
.WEDNESDAY...Northeast winds around 5 knots, becoming south in
the afternoon. Bay waters smooth. A slight chance of showers. A
slight chance of thunderstorms in the late morning and afternoon.
.WEDNESDAY NIGHT...Southeast winds around 5 knots. Bay waters
smooth. A slight chance of showers and thunderstorms early in the
evening.
.THURSDAY...East winds 5 to 10 knots. Bay waters light chop.
.THURSDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters light
chop.
.FRIDAY...East winds 5 to 10 knots. Bay waters light chop.
.FRIDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters light
chop.
.SATURDAY...Northeast winds around 5 knots, becoming southeast in
the afternoon. Bay waters light chop.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters light
chop.
.SUNDAY...East winds around 5 knots, becoming southeast in the
afternoon. Bay waters light chop. A slight chance of showers and
thunderstorms in the afternoon.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters light
chop. A slight chance of showers and thunderstorms early in the
evening.

Winds and waves higher in and near thunderstorms.

$$

GMZ436-170700-
Atchafalaya and East Cote Blanche Bays-
103 PM CDT Tue Sep 16 2025

.TONIGHT...Southeast winds around 5 knots. Bay waters smooth. A
slight chance of showers and thunderstorms early this evening.
.WEDNESDAY...Northeast winds around 5 knots, becoming south
around 5 knots in the afternoon. Bay waters smooth. A slight
chance of showers. A slight chance of thunderstorms in the late
morning and afternoon.
.WEDNESDAY NIGHT...Southeast winds around 5 knots. Bay waters
smooth. A slight chance of showers and thunderstorms early in the
evening.
.THURSDAY...East winds 5 to 10 knots. Bay waters light chop.
.THURSDAY NIGHT...East winds 5 to 10 knots. Bay waters light
chop.
.FRIDAY...East winds 5 to 10 knots. Bay waters light chop. A
slight chance of showers and thunderstorms in the afternoon.
.FRIDAY NIGHT...Southeast winds 5 to 10 knots, becoming east
after midnight. Bay waters light chop. A slight chance of showers
and thunderstorms early in the evening.
.SATURDAY...Northeast winds around 5 knots, becoming southeast in
the afternoon. Bay waters light chop.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots, becoming east
after midnight. Bay waters light chop.
.SUNDAY...East winds around 5 knots, becoming southeast in the
afternoon. Bay waters light chop. A slight chance of showers and
thunderstorms in the afternoon.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots, becoming east
after midnight. Bay waters light chop. A slight chance of showers
and thunderstorms in the evening.

Winds and waves higher in and near thunderstorms.

$$

GMZ450-170700-
Coastal waters from Cameron LA to High Island TX out 20 NM-
103 PM CDT Tue Sep 16 2025

.TONIGHT...South winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southeast 2 feet at 5 seconds.
.WEDNESDAY...Northeast winds around 5 knots, becoming southeast
in the afternoon. Seas around 2 feet in the morning, then 1 foot
or less. Wave Detail: Southeast 1 foot at 5 seconds. A slight
chance of showers and thunderstorms.
.WEDNESDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: Southeast 2 feet at 5 seconds. A slight chance of
showers and thunderstorms early in the evening.
.THURSDAY...East winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southeast 2 feet at 5 seconds.
.THURSDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet. Wave Detail: Southeast 2 feet at 4 seconds.
.FRIDAY...East winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southeast 2 feet at 4 seconds.
.FRIDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet. A slight chance of showers after midnight.
.SATURDAY...East winds 5 to 10 knots. Seas around 2 feet. A
slight chance of showers and thunderstorms.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet. A slight chance of thunderstorms early in the evening. A
slight chance of showers.
.SUNDAY...Southeast winds 5 to 10 knots. Seas around 2 feet. A
slight chance of showers and thunderstorms.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet. A slight chance of showers. A slight chance of
thunderstorms early in the evening. A slight chance of
thunderstorms after midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ452-170700-
Coastal waters from Intracoastal City to Cameron LA out 20 NM-
103 PM CDT Tue Sep 16 2025

.TONIGHT...South winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southeast 2 feet at 5 seconds.
.WEDNESDAY...Northeast winds around 5 knots, becoming south in
the afternoon. Seas around 2 feet in the morning, then 1 foot or
less. Wave Detail: Southeast 1 foot at 5 seconds. A slight chance
of showers. A slight chance of thunderstorms in the late morning
and afternoon.
.WEDNESDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: Southeast 2 feet at 4 seconds.
.THURSDAY...East winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southeast 1 foot at 4 seconds.
.THURSDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet. Wave Detail: Southeast 2 feet at 4 seconds.
.FRIDAY...East winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southeast 2 feet at 5 seconds. A slight chance of showers
late in the morning. A slight chance of showers and thunderstorms
in the afternoon.
.FRIDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet. A slight chance of thunderstorms early in the evening. A
slight chance of showers.
.SATURDAY...East winds 5 to 10 knots. Seas around 2 feet. A
slight chance of showers and thunderstorms.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet. A slight chance of showers. A slight chance of
thunderstorms early in the evening. A slight chance of
thunderstorms after midnight.
.SUNDAY...East winds 5 to 10 knots. Seas around 2 feet. A slight
chance of showers and thunderstorms.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet. A slight chance of showers. A slight chance of
thunderstorms early in the evening. A slight chance of
thunderstorms after midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ455-170700-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA out 20 NM-
103 PM CDT Tue Sep 16 2025

.TONIGHT...Southeast winds 5 to 10 knots, diminishing to around
5 knots after midnight. Seas 1 foot or less. Wave Detail:
Southeast 1 foot at 2 seconds.
.WEDNESDAY...Northeast winds around 5 knots, becoming southeast
around 5 knots in the afternoon. Seas 1 foot or less.
.WEDNESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 foot or
less. Wave Detail: Southeast 1 foot at 3 seconds.
.THURSDAY...East winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: East 1 foot at 2 seconds.
.THURSDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: Southeast 1 foot at 3 seconds. A slight chance of
showers after midnight.
.FRIDAY...East winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: East 1 foot at 3 seconds. A slight chance of showers and
thunderstorms.
.FRIDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 foot or
less. A slight chance of thunderstorms early in the evening. A
slight chance of showers.
.SATURDAY...East winds 5 to 10 knots. Seas 1 foot or less. A
slight chance of showers and thunderstorms.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 foot or
less. A slight chance of showers. A slight chance of
thunderstorms after midnight.
.SUNDAY...East winds 5 to 10 knots. Seas 1 foot or less. A slight
chance of showers and thunderstorms.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 foot or
less. A slight chance of showers and thunderstorms.

Winds and seas higher in and near thunderstorms.

$$

GMZ470-170700-
Coastal waters from Cameron LA to High Island TX from 20 to 60 NM-
103 PM CDT Tue Sep 16 2025

.TONIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 3 feet at 6 seconds.
.WEDNESDAY...East winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southeast 2 feet at 6 seconds.
.WEDNESDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet. Wave Detail: Southeast 2 feet at 5 seconds.
.THURSDAY...East winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southeast 2 feet at 5 seconds. A slight chance of showers
late.
.THURSDAY NIGHT...Southeast winds around 10 knots. Seas around
2 feet. Wave Detail: Southeast 2 feet at 5 seconds. A slight
chance of showers.
.FRIDAY...East winds around 10 knots. Seas around 2 feet. Wave
Detail: East 2 feet at 5 seconds. A slight chance of showers. A
slight chance of thunderstorms in the late morning and afternoon.
.FRIDAY NIGHT...Southeast winds around 10 knots. Seas around
2 feet. A slight chance of thunderstorms early in the evening. A
slight chance of showers in the evening, then a chance of showers
with a slight chance of thunderstorms after midnight.
.SATURDAY...East winds around 10 knots. Seas around 2 feet. A
chance of showers with a slight chance of thunderstorms.
.SATURDAY NIGHT...Southeast winds around 10 knots. Seas around
2 feet. A slight chance of thunderstorms early in the evening. A
chance of showers.
.SUNDAY...East winds around 10 knots. Seas around 2 feet. A
slight chance of thunderstorms. A chance of showers until late
afternoon, then a slight chance of showers late.
.SUNDAY NIGHT...Southeast winds around 10 knots. Seas around
2 feet. A slight chance of thunderstorms early in the evening. A
slight chance of showers in the evening, then a chance of showers
with a slight chance of thunderstorms after midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ472-170700-
Coastal waters from Intracoastal City to Cameron LA from 20 to
60 NM-
103 PM CDT Tue Sep 16 2025

.TONIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 3 feet at 5 seconds.
.WEDNESDAY...East winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southeast 2 feet at 5 seconds.
.WEDNESDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet. Wave Detail: Southeast 2 feet at 5 seconds.
.THURSDAY...East winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southeast 2 feet at 5 seconds. A slight chance of showers
in the afternoon.
.THURSDAY NIGHT...East winds around 10 knots. Seas 2 to 3 feet.
Wave Detail: Southeast 2 feet at 5 seconds. A slight chance of
showers.
.FRIDAY...East winds around 10 knots. Seas around 2 feet. Wave
Detail: East 2 feet at 4 seconds. A chance of showers with a
slight chance of thunderstorms.
.FRIDAY NIGHT...East winds around 10 knots. Seas 2 to 3 feet. A
chance of showers. A slight chance of thunderstorms early in the
evening. A slight chance of thunderstorms after midnight.
.SATURDAY...East winds around 10 knots. Seas around 2 feet. A
slight chance of thunderstorms. A chance of showers until late
afternoon, then a slight chance of showers late.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet. A chance of showers. A slight chance of thunderstorms
late.
.SUNDAY...East winds around 10 knots. Seas around 2 feet. A
slight chance of thunderstorms. A chance of showers, mainly in
the morning.
.SUNDAY NIGHT...Southeast winds around 10 knots. Seas around
2 feet. A slight chance of showers in the evening. A slight
chance of thunderstorms. A chance of showers after midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ475-170700-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA from 20 to 60 NM-
103 PM CDT Tue Sep 16 2025

.TONIGHT...Southeast winds 10 to 15 knots, diminishing to 5 to
10 knots after midnight. Seas 2 to 3 feet. Wave Detail: Southeast
3 feet at 5 seconds.
.WEDNESDAY...East winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southeast 2 feet at 5 seconds.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: East 2 feet at 4 seconds.
.THURSDAY...East winds 5 to 10 knots, increasing to 10 to
15 knots in the afternoon. Seas 2 to 3 feet. Wave Detail:
Southeast 2 feet at 5 seconds. A slight chance of showers in the
afternoon.
.THURSDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet.
Wave Detail: Southeast 3 feet at 5 seconds. A slight chance of
showers in the evening. A chance of showers after midnight. A
slight chance of thunderstorms late.
.FRIDAY...East winds around 10 knots. Seas 2 to 3 feet. Wave
Detail: East 2 feet at 4 seconds and southeast 2 feet at
7 seconds. A chance of showers. A chance of thunderstorms until
late afternoon, then a slight chance of thunderstorms late.
.FRIDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet. A
slight chance of thunderstorms early in the evening. A chance of
showers.
.SATURDAY...East winds 5 to 10 knots. Seas 2 to 3 feet. A chance
of showers until late afternoon. A slight chance of thunderstorms
late in the morning. A slight chance of showers late.
.SATURDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet. A
chance of showers. A slight chance of thunderstorms after
midnight.
.SUNDAY...East winds 5 to 10 knots. Seas around 2 feet. A slight
chance of thunderstorms. A chance of showers until late
afternoon, then a slight chance of showers late.
.SUNDAY NIGHT...East winds around 10 knots. Seas around 2 feet. A
chance of showers. A slight chance of thunderstorms early in the
evening. A slight chance of thunderstorms after midnight.

Winds and seas higher in and near thunderstorms.

$$