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FZUS54 KLCH 192010
CWFLCH

Coastal Waters Forecast
National Weather Service Lake Charles LA
309 PM CDT Sat Sep 19 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.

GMZ400-200900-
309 PM CDT Sat Sep 19 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 southeast winds and low seas will exist across the
coastal waters through Tuesday. A weak frontal boundary may move
into the coastal waters Wednesday briefly switching winds
offshore and increasing rain chances.

$$

GMZ430-200900-
Sabine Lake-
309 PM CDT Sat Sep 19 2026

.TONIGHT...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. A slight chance of showers. A
slight chance of thunderstorms in the afternoon.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots, becoming south
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 around
5 knots after midnight. Lake waters smooth.
.TUESDAY...North winds around 5 knots, becoming northeast around
5 knots in the afternoon. Lake waters smooth.
.TUESDAY NIGHT...East winds around 5 knots. Lake waters smooth.
.WEDNESDAY...Northeast winds 5 to 10 knots. Lake waters light
chop.
.WEDNESDAY NIGHT...East winds around 5 knots, increasing to 5 to
10 knots after midnight. Lake waters light chop.
.THURSDAY...Northeast winds 5 to 10 knots. Lake waters light
chop.
.THURSDAY NIGHT...East winds 5 to 10 knots. Lake waters light
chop.

Winds and waves higher in and near thunderstorms.

$$

GMZ432-200900-
Calcasieu Lake-
309 PM CDT Sat Sep 19 2026

.TONIGHT...South winds 5 to 10 knots, becoming southeast late.
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...Southwest winds around 5 knots, becoming west
around 5 knots after midnight. Lake waters smooth.
.TUESDAY...North winds around 5 knots, becoming east in the
afternoon. Lake waters smooth.
.TUESDAY NIGHT...Southeast 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...East winds 5 to 10 knots. Lake waters light
chop.
.THURSDAY...Northeast winds 10 to 15 knots. Lake waters choppy.
.THURSDAY NIGHT...Northeast winds 5 to 10 knots. Lake waters
light chop.

$$

GMZ435-200900-
Vermilion and West Cote Blanche Bays-
309 PM CDT Sat Sep 19 2026

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

Winds and waves higher in and near thunderstorms.

$$

GMZ436-200900-
Atchafalaya and East Cote Blanche Bays-
309 PM CDT Sat Sep 19 2026

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

Winds and waves higher in and near thunderstorms.

$$

GMZ450-200900-
Coastal waters from Cameron LA to High Island TX out 20 NM-
309 PM CDT Sat Sep 19 2026

.TONIGHT...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 5 seconds, becoming southeast 1 foot at 5 seconds. A slight
chance of showers and thunderstorms.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet. Wave Detail: Southeast 2 feet at 4 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, becoming southwest
after midnight. Seas 1 foot or less. Wave Detail: Southeast
1 foot at 4 seconds.
.TUESDAY...North winds 5 to 10 knots, becoming east in the
afternoon. Seas 1 foot or less. Wave Detail: North 1 foot at
2 seconds and southeast 1 foot at 4 seconds. A slight chance of
showers and thunderstorms in the morning.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 foot or
less.
.WEDNESDAY...East winds 10 to 15 knots. Seas around 2 feet.
.WEDNESDAY NIGHT...Southeast winds 5 to 10 knots, becoming east
10 to 15 knots after midnight. Seas around 2 feet.
.THURSDAY...Northeast winds 15 to 20 knots, becoming east 10 to
15 knots in the afternoon. Seas 2 to 3 feet.
.THURSDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet.

Winds and seas higher in and near thunderstorms.

$$

GMZ452-200900-
Coastal waters from Intracoastal City to Cameron LA out 20 NM-
309 PM CDT Sat Sep 19 2026

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

Winds and seas higher in and near thunderstorms.

$$

GMZ455-200900-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA out 20 NM-
309 PM CDT Sat Sep 19 2026

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

Winds and seas higher in and near thunderstorms.

$$

GMZ470-200900-
Coastal waters from Cameron LA to High Island TX from 20 to 60 NM-
309 PM CDT Sat Sep 19 2026

.TONIGHT...Southeast winds around 10 knots. 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. A slight chance of showers
and thunderstorms in the afternoon.
.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 2 feet at
5 seconds, becoming southeast 1 foot at 5 seconds.
.MONDAY NIGHT...Southeast winds around 5 knots. Seas 1 foot or
less. Wave Detail: Southeast 1 foot at 4 seconds.
.TUESDAY...Northeast winds 5 to 10 knots. Seas 1 foot or less,
then around 2 feet in the afternoon. Wave Detail: East 1 foot at
4 seconds, becoming northeast 1 foot at 3 seconds. A chance of
showers and thunderstorms in the morning.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 foot or
less.
.WEDNESDAY...Northeast winds 10 to 15 knots. Seas 2 to 3 feet.
.WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet.
.THURSDAY...Northeast winds 15 to 20 knots. Seas 2 to 4 feet.
.THURSDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet.

Winds and seas higher in and near thunderstorms.

$$

GMZ472-200900-
Coastal waters from Intracoastal City to Cameron LA from 20 to
60 NM-
309 PM CDT Sat Sep 19 2026

.TONIGHT...Southeast winds 10 to 15 knots, diminishing to 5 to
10 knots late. 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 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.
Wave Detail: Southeast 1 foot at 4 seconds.
.TUESDAY...Northeast winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: Northeast 1 foot at 4 seconds. 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 around 2 feet.
.WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet.
.THURSDAY...Northeast winds 15 to 20 knots, diminishing to 10 to
15 knots in the afternoon. Seas 2 to 4 feet.
.THURSDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 4 feet.

Winds and seas higher in and near thunderstorms.

$$

GMZ475-200900-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA from 20 to 60 NM-
309 PM CDT Sat Sep 19 2026

.TONIGHT...Southeast winds 10 to 15 knots, diminishing to 5 to
10 knots late. 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...East winds 5 to 10 knots. Seas 1 foot or less, then
around 2 feet in the afternoon. Wave Detail: Southeast 1 foot at
4 seconds, becoming east 1 foot at 4 seconds. A chance of showers
and thunderstorms, mainly in the morning.
.MONDAY NIGHT...East winds around 5 knots. Seas 1 foot or less.
Wave Detail: East 1 foot at 4 seconds.
.TUESDAY...Northeast winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: Northeast 1 foot at 4 seconds. A chance of showers
and thunderstorms in the morning.
.TUESDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet.
.WEDNESDAY...Northeast winds 10 to 15 knots. Seas 2 to 3 feet. A
slight chance of showers and thunderstorms in the afternoon.
.WEDNESDAY NIGHT...East winds 15 to 20 knots, diminishing to
10 to 15 knots after midnight. Seas 2 to 4 feet.
.THURSDAY...Northeast winds 15 to 20 knots. Seas 3 to 5 feet,
occasionally to 6 feet. A slight chance of showers and
thunderstorms.
.THURSDAY NIGHT...East winds 15 to 20 knots. Seas 3 to 5 feet,
occasionally to 6 feet.

Winds and seas higher in and near thunderstorms.

$$