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FZUS54 KLCH 182010
CWFLCH

Coastal Waters Forecast
National Weather Service Lake Charles LA
309 PM CDT Fri Sep 18 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.

GMZ400-190900-
309 PM CDT Fri Sep 18 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 east to southeasterly winds and low seas will prevail
through Tuesday along with very low precipitation chances as high
pressure remains in place across the northern gulf. A weak frontal
boundary will push through the coastal waters Wednesday with breezy
northeasterly winds developing in it`s wake.

$$

GMZ430-190900-
Sabine Lake-
310 PM CDT Fri Sep 18 2026

.TONIGHT...Southeast winds around 5 knots. Lake waters smooth.
.SATURDAY...East winds 5 to 10 knots. Lake waters light chop.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots, diminishing to
around 5 knots after midnight. Lake waters light chop.
.SUNDAY...East winds around 5 knots, becoming southeast in the
afternoon. Lake waters light chop.
.SUNDAY NIGHT...South winds 5 to 10 knots, diminishing to around
5 knots after midnight. Lake waters light chop.
.MONDAY...Northeast winds around 5 knots, becoming southeast in
the afternoon. Lake waters smooth.
.MONDAY NIGHT...South winds around 5 knots, becoming west after
midnight. Lake waters smooth.
.TUESDAY...Northeast winds around 5 knots. Lake waters smooth.
.TUESDAY NIGHT...Southeast winds around 5 knots, becoming east
after midnight. Lake waters smooth.
.WEDNESDAY...Northeast winds 5 to 10 knots. Lake waters light
chop.
.WEDNESDAY NIGHT...East winds around 5 knots, becoming northeast
after midnight. Lake waters light chop.

$$

GMZ432-190900-
Calcasieu Lake-
310 PM CDT Fri Sep 18 2026

.TONIGHT...Southeast winds 5 to 10 knots, diminishing to around
5 knots late this evening and early morning, then becoming east
late. Lake waters light chop.
.SATURDAY...Northeast winds 5 to 10 knots, becoming southeast in
the afternoon. Lake waters light chop.
.SATURDAY NIGHT...South winds 5 to 10 knots, becoming southeast
after midnight. Lake waters light chop.
.SUNDAY...East winds around 5 knots, becoming south in the
afternoon. Lake waters light chop.
.SUNDAY NIGHT...South winds 5 to 10 knots. Lake waters light
chop.
.MONDAY...Northeast winds around 5 knots, becoming southeast in
the afternoon. Lake waters smooth.
.MONDAY NIGHT...South winds around 5 knots, becoming west after
midnight. Lake waters smooth.
.TUESDAY...North winds around 5 knots, becoming east in the
afternoon. Lake waters smooth.
.TUESDAY NIGHT...South winds around 5 knots, becoming east around
5 knots after midnight. Lake waters smooth.
.WEDNESDAY...Northeast winds 5 to 10 knots. Lake waters light
chop.
.WEDNESDAY NIGHT...Northeast winds 5 to 10 knots. Lake waters
light chop.

$$

GMZ435-190900-
Vermilion and West Cote Blanche Bays-
310 PM CDT Fri Sep 18 2026

.TONIGHT...East winds 5 to 10 knots. Bay waters light chop.
.SATURDAY...Northeast winds 5 to 10 knots, becoming southeast in
the afternoon. Bay waters light chop.
.SATURDAY NIGHT...South winds 5 to 10 knots. Bay waters light
chop.
.SUNDAY...East winds around 5 knots, becoming southeast in the
afternoon. Bay waters light chop.
.SUNDAY NIGHT...South winds around 5 knots. Bay waters smooth.
.MONDAY...North winds around 5 knots, becoming east around
5 knots in the afternoon. Bay waters smooth. A slight chance of
showers and thunderstorms in the afternoon.
.MONDAY NIGHT...South winds around 5 knots, becoming northeast
after midnight. Bay waters smooth.
.TUESDAY...North winds around 5 knots, becoming east around
5 knots in the afternoon. Bay waters smooth. A slight chance of
showers and thunderstorms in the afternoon.
.TUESDAY NIGHT...Southeast winds around 5 knots. Bay waters
smooth.
.WEDNESDAY...Northeast winds 5 to 10 knots. Bay waters light
chop. A slight chance of showers and thunderstorms in the
afternoon.
.WEDNESDAY NIGHT...East winds 5 to 10 knots, becoming northeast
10 to 15 knots after midnight. Bay waters choppy.

Winds and waves higher in and near thunderstorms.

$$

GMZ436-190900-
Atchafalaya and East Cote Blanche Bays-
310 PM CDT Fri Sep 18 2026

.TONIGHT...East winds 5 to 10 knots. Bay waters light chop.
.SATURDAY...Northeast winds 5 to 10 knots, becoming southeast in
the afternoon. Bay waters light chop.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots, diminishing to
around 5 knots after midnight. Bay waters light chop.
.SUNDAY...East winds around 5 knots, becoming southeast in the
afternoon. Bay waters smooth.
.SUNDAY NIGHT...South winds around 5 knots. Bay waters smooth. A
slight chance of showers and thunderstorms after midnight.
.MONDAY...North winds around 5 knots, becoming east 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.
.MONDAY NIGHT...Southeast winds around 5 knots. Bay waters
smooth.
.TUESDAY...Northeast winds around 5 knots, becoming east in the
afternoon. Bay waters smooth. A chance of showers and
thunderstorms in the afternoon.
.TUESDAY NIGHT...Southeast winds around 5 knots. Bay waters
smooth.
.WEDNESDAY...Northeast winds 5 to 10 knots. Bay waters light
chop. A chance of showers and thunderstorms in the afternoon.
.WEDNESDAY NIGHT...Northeast winds 5 to 10 knots. Bay waters
light chop.

Winds and waves higher in and near thunderstorms.

$$

GMZ450-190900-
Coastal waters from Cameron LA to High Island TX out 20 NM-
310 PM CDT Fri Sep 18 2026

.TONIGHT...Southeast winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: Southeast 2 feet at 4 seconds.
.SATURDAY...East winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southeast 2 feet at 4 seconds.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet. Wave Detail: Southeast 2 feet at 4 seconds.
.SUNDAY...Southeast winds 5 to 10 knots. Seas around 2 feet in
the morning, then 1 foot or less. Wave Detail: Southeast 2 feet
at 4 seconds, becoming southeast 1 foot at 5 seconds. A slight
chance of showers and thunderstorms in the morning.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet. Wave Detail: Southeast 2 feet at 5 seconds.
.MONDAY...Southeast winds around 5 knots. Seas 1 foot or less.
Wave Detail: Southeast 1 foot at 4 seconds.
.MONDAY NIGHT...South winds 5 to 10 knots. Seas 1 foot or less.
.TUESDAY...North winds 5 to 10 knots, becoming east in the
afternoon. Seas 1 foot or less. A slight chance of showers and
thunderstorms in the morning.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 foot or
less. A slight chance of showers and thunderstorms after
midnight.
.WEDNESDAY...Northeast winds 10 to 15 knots, becoming east 5 to
10 knots in the afternoon. Seas around 2 feet.
.WEDNESDAY NIGHT...East winds 5 to 10 knots, increasing to 10 to
15 knots after midnight. Seas 1 foot or less, then around 2 feet
after midnight. A slight chance of showers and thunderstorms
after midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ452-190900-
Coastal waters from Intracoastal City to Cameron LA out 20 NM-
310 PM CDT Fri Sep 18 2026

.TONIGHT...Southeast winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: Southeast 2 feet at 4 seconds.
.SATURDAY...East winds around 10 knots. Seas around 2 feet. Wave
Detail: East 1 foot at 3 seconds.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet. Wave Detail: Southeast 2 feet at 3 seconds.
.SUNDAY...Southeast winds 5 to 10 knots. Seas around 2 feet in
the morning, then 1 foot or less. Wave Detail: Southeast 1 foot
at 4 seconds.
.SUNDAY NIGHT...South winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: Southeast 1 foot at 4 seconds.
.MONDAY...East winds around 5 knots. Seas 1 foot or less. Wave
Detail: Southeast 1 foot at 4 seconds. A slight chance of showers
and thunderstorms.
.MONDAY NIGHT...South winds around 5 knots, becoming northeast
after midnight. Seas 1 foot or less.
.TUESDAY...North winds 5 to 10 knots, becoming east in the
afternoon. Seas 1 foot or less. A slight chance of showers and
thunderstorms in the afternoon.
.TUESDAY NIGHT...Southeast winds around 5 knots. Seas 1 foot or
less.
.WEDNESDAY...Northeast winds 5 to 10 knots. Seas 1 foot or less.
.WEDNESDAY NIGHT...East winds 5 to 10 knots, becoming northeast
10 to 15 knots after midnight. Seas 1 foot or less, then around
2 feet after midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ455-190900-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA out 20 NM-
310 PM CDT Fri Sep 18 2026

.TONIGHT...East winds 5 to 10 knots. Seas 1 to 2 feet. Wave
Detail: Southeast 2 feet at 3 seconds.
.SATURDAY...East winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: East 1 foot at 2 seconds.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 foot or
less. Wave Detail: Southeast 1 foot at 3 seconds.
.SUNDAY...Southeast winds around 5 knots. Seas 1 foot or less.
Wave Detail: Southeast 1 foot at 3 seconds.
.SUNDAY NIGHT...Southeast winds around 5 knots. Seas 1 foot or
less. Wave Detail: Southeast 1 foot at 3 seconds. A slight chance
of showers after midnight.
.MONDAY...Northeast winds around 5 knots. Seas 1 foot or less.
Wave Detail: Southeast 1 foot at 3 seconds. A chance of showers
and thunderstorms, mainly in the morning.
.MONDAY NIGHT...East winds around 5 knots. Seas 1 foot or less.
.TUESDAY...Northeast winds 5 to 10 knots, becoming east in the
afternoon. Seas 1 foot or less. A slight chance of showers and
thunderstorms in the afternoon.
.TUESDAY NIGHT...Southeast winds around 5 knots. Seas 1 foot or
less.
.WEDNESDAY...Northeast winds 5 to 10 knots. Seas 1 foot or less.
A slight chance of showers and thunderstorms in the afternoon.
.WEDNESDAY NIGHT...East winds 5 to 10 knots, becoming northeast
10 to 15 knots after midnight. Seas 1 foot or less, then around
2 feet after midnight. A slight chance of showers and
thunderstorms after midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ470-190900-
Coastal waters from Cameron LA to High Island TX from 20 to 60 NM-
310 PM CDT Fri Sep 18 2026

.TONIGHT...East winds 10 to 15 knots. Seas 2 to 4 feet. Wave
Detail: East 4 feet at 6 seconds.
.SATURDAY...East winds around 10 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 3 feet at 6 seconds.
.SATURDAY NIGHT...Southeast winds around 10 knots. Seas 2 to
3 feet. Wave Detail: Southeast 2 feet at 6 seconds.
.SUNDAY...Southeast winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southeast 2 feet at 6 seconds.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet. Wave Detail: Southeast 2 feet at 5 seconds.
.MONDAY...East winds around 5 knots. 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 in the
morning.
.MONDAY NIGHT...Southeast winds around 5 knots. Seas 1 foot or
less.
.TUESDAY...Northeast winds 5 to 10 knots. Seas 1 foot or less. A
chance of showers and thunderstorms in the morning.
.TUESDAY NIGHT...East winds around 5 knots. Seas 1 foot or less.
A slight chance of showers and thunderstorms after midnight.
.WEDNESDAY...Northeast winds 10 to 15 knots. Seas around 2 feet.
A slight chance of showers and thunderstorms.
.WEDNESDAY NIGHT...East winds 10 to 15 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.

$$

GMZ472-190900-
Coastal waters from Intracoastal City to Cameron LA from 20 to
60 NM-
310 PM CDT Fri Sep 18 2026

.TONIGHT...East winds 10 to 15 knots. Seas 2 to 4 feet. Wave
Detail: East 4 feet at 7 seconds.
.SATURDAY...East winds around 10 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 3 feet at 6 seconds.
.SATURDAY NIGHT...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 6 seconds.
.SUNDAY...Southeast winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southeast 2 feet at 6 seconds.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet. Wave Detail: Southeast 2 feet at 5 seconds.
.MONDAY...East winds around 5 knots. Seas 1 foot or less. Wave
Detail: Southeast 1 foot at 5 seconds. A slight chance of showers
and thunderstorms in the morning.
.MONDAY NIGHT...East winds around 5 knots. Seas 1 foot or less.
.TUESDAY...Northeast winds 5 to 10 knots. Seas 1 foot or less. A
slight chance of showers and thunderstorms in the morning.
.TUESDAY NIGHT...East winds around 5 knots. Seas 1 foot or less.
.WEDNESDAY...Northeast winds 10 to 15 knots. Seas around 2 feet.
A slight chance of showers and thunderstorms.
.WEDNESDAY NIGHT...East winds 5 to 10 knots, increasing to 10 to
15 knots after midnight. Seas 2 to 3 feet. A slight chance of
showers. A slight chance of thunderstorms after midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ475-190900-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA from 20 to 60 NM-
310 PM CDT Fri Sep 18 2026

.TONIGHT...East winds 10 to 15 knots with gusts up to 20 knots,
increasing to 15 to 20 knots late this evening, then diminishing
to 10 to 15 knots after midnight. Seas 3 to 5 feet, occasionally
to 6 feet. Wave Detail: East 4 feet at 7 seconds.
.SATURDAY...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 3 feet at 6 seconds.
.SATURDAY NIGHT...East winds 10 to 15 knots, becoming southeast
5 to 10 knots after midnight. Seas 2 to 3 feet. Wave Detail:
Southeast 3 feet at 6 seconds.
.SUNDAY...East winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southeast 2 feet at 5 seconds.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet. Wave Detail: Southeast 2 feet at 5 seconds.
.MONDAY...Northeast winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: Southeast 1 foot at 5 seconds. A chance of showers
and thunderstorms, mainly in the morning.
.MONDAY NIGHT...East winds around 5 knots. Seas 1 foot or less.
.TUESDAY...Northeast winds 5 to 10 knots. Seas 1 foot or less. A
chance of showers and thunderstorms in the morning.
.TUESDAY NIGHT...East winds 5 to 10 knots. Seas 1 foot or less.
.WEDNESDAY...Northeast winds 10 to 15 knots. Seas 2 to 3 feet. A
slight chance of showers and thunderstorms.
.WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet. A
slight chance of showers and thunderstorms.

Winds and seas higher in and near thunderstorms.

$$