754
FZUS54 KLCH 300545
CWFLCH

Coastal Waters Forecast
National Weather Service Lake Charles LA
1245 AM CDT Tue Sep 30 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.

GMZ400-301800-
1245 AM CDT Tue Sep 30 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...

Surface high pressure ridging down into the coastal waters through
mid week will keep a light to occasionally modest offshore flow to
go along with mainly low seas. By the end of the week, the surface
high will be ridging down from the Mid-Atlantic area, producing more
of an easterly flow. No significant chance of shower activity is
noted through mid week, with shower activity increasing toward the
end of the week with an upper level disturbance developing over the
northern Gulf.

$$

GMZ430-301800-
Sabine Lake-
1245 AM CDT Tue Sep 30 2025

.TODAY...North winds around 5 knots. Lake waters smooth.
.TONIGHT...North winds around 5 knots. Lake waters smooth.
.WEDNESDAY...Northeast winds around 5 knots. Lake waters smooth.
.WEDNESDAY NIGHT...Southwest winds around 5 knots, becoming north
after midnight. Lake waters smooth.
.THURSDAY...Northeast winds around 5 knots, becoming east in the
afternoon. Lake waters smooth. A slight chance of showers and
thunderstorms in the afternoon.
.THURSDAY NIGHT...East winds 5 to 10 knots. Lake waters light
chop. A slight chance of showers and thunderstorms in the
evening, then a slight chance of showers after midnight.
.FRIDAY...East winds 5 to 10 knots. Lake waters light chop. A
slight chance of showers. A slight chance of thunderstorms in the
afternoon.
.FRIDAY NIGHT...East winds 5 to 10 knots. Lake waters light chop.
A slight chance of showers and thunderstorms early in the
evening.
.SATURDAY...East winds 5 to 10 knots. Lake waters light chop. A
slight chance of showers in the afternoon.
.SATURDAY NIGHT...East winds 5 to 10 knots. Lake waters light
chop. A slight chance of showers.

Winds and waves higher in and near thunderstorms.

$$

GMZ432-301800-
Calcasieu Lake-
1245 AM CDT Tue Sep 30 2025

.TODAY...North winds around 5 knots. Lake waters smooth.
.TONIGHT...North winds around 5 knots. Lake waters smooth.
.WEDNESDAY...North winds around 5 knots. Lake waters smooth.
.WEDNESDAY NIGHT...North winds around 5 knots. Lake waters
smooth.
.THURSDAY...Northeast winds around 5 knots, becoming southeast in
the afternoon. Lake waters smooth. A slight chance of showers and
thunderstorms in the afternoon.
.THURSDAY NIGHT...East winds 5 to 10 knots. Lake waters light
chop. A slight chance of showers and thunderstorms in the
evening, then a slight chance of showers after midnight.
.FRIDAY...East winds around 10 knots. Lake waters light chop. A
slight chance of showers. A slight chance of thunderstorms in the
afternoon.
.FRIDAY NIGHT...East winds 5 to 10 knots. Lake waters light chop.
A slight chance of showers and thunderstorms early in the
evening.
.SATURDAY...East winds around 10 knots. Lake waters light chop. A
slight chance of showers in the afternoon.
.SATURDAY NIGHT...East winds 5 to 10 knots. Lake waters light
chop. A slight chance of showers.

Winds and waves higher in and near thunderstorms.

$$

GMZ435-301800-
Vermilion and West Cote Blanche Bays-
1245 AM CDT Tue Sep 30 2025

.TODAY...North winds around 5 knots. Bay waters smooth.
.TONIGHT...North winds 5 to 10 knots. Bay waters light chop.
.WEDNESDAY...North winds 5 to 10 knots. Bay waters light chop.
.WEDNESDAY NIGHT...Southwest winds around 5 knots, becoming
southeast after midnight. Bay waters smooth.
.THURSDAY...East winds 5 to 10 knots. Bay waters light chop. A
chance of showers and thunderstorms in the afternoon.
.THURSDAY NIGHT...East winds 5 to 10 knots, increasing to 10 to
15 knots after midnight. Bay waters choppy. A chance of showers
and thunderstorms early in the evening, then a slight chance of
thunderstorms late in the evening. A slight chance of showers in
the late evening and overnight.
.FRIDAY...East winds 10 to 15 knots. Bay waters choppy. A slight
chance of showers in the morning, then a chance of showers with a
slight chance of thunderstorms in the afternoon.
.FRIDAY NIGHT...East winds 10 to 15 knots. Bay waters choppy. A
chance of showers with a slight chance of thunderstorms early in
the evening, then a slight chance of showers in the late evening
and overnight.
.SATURDAY...East winds 10 to 15 knots. Bay waters choppy. A
slight chance of showers early in the morning. A chance of
showers with a slight chance of thunderstorms in the afternoon.
.SATURDAY NIGHT...East winds 10 to 15 knots. Bay waters choppy. A
chance of showers with a slight chance of thunderstorms early in
the evening, then a slight chance of showers in the late evening
and overnight.

Winds and waves higher in and near thunderstorms.

$$

GMZ436-301800-
Atchafalaya and East Cote Blanche Bays-
1245 AM CDT Tue Sep 30 2025

.TODAY...North winds around 5 knots. Bay waters smooth.
.TONIGHT...North winds around 5 knots. Bay waters smooth.
.WEDNESDAY...North winds 5 to 10 knots, becoming northwest in the
afternoon. Bay waters light chop.
.WEDNESDAY NIGHT...South winds around 5 knots, becoming east
after midnight. Bay waters smooth.
.THURSDAY...East winds 5 to 10 knots. Bay waters light chop. A
chance of showers and thunderstorms in the afternoon.
.THURSDAY NIGHT...East winds 5 to 10 knots, increasing to 10 to
15 knots after midnight. Bay waters choppy. A chance of
thunderstorms in the evening. A chance of showers. A slight
chance of thunderstorms after midnight.
.FRIDAY...East winds 10 to 15 knots. Bay waters choppy. A slight
chance of thunderstorms in the morning. A chance of showers. A
chance of thunderstorms in the afternoon.
.FRIDAY NIGHT...East winds 10 to 15 knots, becoming northeast
5 to 10 knots after midnight. Bay waters choppy. A chance of
thunderstorms early in the evening. A chance of showers until
early morning, then a slight chance of showers late.
.SATURDAY...East winds 10 to 15 knots. Bay waters choppy. A
slight chance of showers in the morning, then a chance of showers
with a slight chance of thunderstorms in the afternoon.
.SATURDAY NIGHT...East winds 5 to 10 knots. Bay waters light
chop. A slight chance of thunderstorms early in the evening. A
chance of showers until early morning, then a slight chance of
showers late.

Winds and waves higher in and near thunderstorms.

$$

GMZ450-301800-
Coastal waters from Cameron LA to High Island TX out 20 NM-
1245 AM CDT Tue Sep 30 2025

.TODAY...Northeast winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: North 1 foot at 2 seconds and northeast 1 foot at
5 seconds.
.TONIGHT...North winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: East 1 foot at 4 seconds.
.WEDNESDAY...Northeast winds 5 to 10 knots, becoming east in the
afternoon. Seas 1 foot or less. Wave Detail: Northeast 1 foot at
3 seconds.
.WEDNESDAY NIGHT...Southwest winds around 5 knots, becoming
northwest after midnight. Seas 1 foot or less. Wave Detail: East
1 foot at 3 seconds.
.THURSDAY...North winds 5 to 10 knots, becoming east in the
afternoon. Seas 1 foot or less. Wave Detail: North 1 foot at
3 seconds. A slight chance of showers and thunderstorms in the
afternoon.
.THURSDAY NIGHT...East winds 5 to 10 knots, increasing to 10 to
15 knots after midnight. Seas 2 to 3 feet. Wave Detail: East
2 feet at 3 seconds. A chance of showers with a slight chance of
thunderstorms.
.FRIDAY...East winds 10 to 15 knots with gusts up to 20 knots.
Seas 2 to 3 feet. A chance of showers with a slight chance of
thunderstorms.
.FRIDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet. A
chance of showers with a slight chance of thunderstorms early in
the evening, then a slight chance of showers in the late evening
and overnight.
.SATURDAY...East winds 10 to 15 knots. Seas 2 to 3 feet. A slight
chance of showers.
.SATURDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet. A
chance of showers.

Winds and seas higher in and near thunderstorms.

$$

GMZ452-301800-
Coastal waters from Intracoastal City to Cameron LA out 20 NM-
1245 AM CDT Tue Sep 30 2025

.TODAY...North winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: Northeast 1 foot at 3 seconds.
.TONIGHT...North winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: Northwest 1 foot at 2 seconds.
.WEDNESDAY...North winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: North 1 foot at 3 seconds.
.WEDNESDAY NIGHT...West winds around 5 knots, becoming northeast
after midnight. Seas 1 foot or less. Wave Detail: West 1 foot at
2 seconds and northeast 1 foot at 2 seconds.
.THURSDAY...East winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: East 1 foot at 3 seconds. A chance of showers with a
slight chance of thunderstorms early in the afternoon. A chance
of showers and thunderstorms late.
.THURSDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet.
Wave Detail: East 3 feet at 4 seconds. A chance of showers.
.FRIDAY...East winds 15 to 20 knots, diminishing to 10 to
15 knots in the afternoon. Seas 2 to 3 feet. A chance of showers.
A slight chance of thunderstorms in the afternoon.
.FRIDAY NIGHT...East winds 10 to 15 knots with gusts up to
20 knots. Seas 2 to 3 feet. A slight chance of thunderstorms
early in the evening. A chance of showers until early morning,
then a slight chance of showers late.
.SATURDAY...East winds 10 to 15 knots. Seas 2 to 3 feet. A slight
chance of showers in the morning, then a chance of showers with a
slight chance of thunderstorms in the afternoon.
.SATURDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet. A
chance of showers.

Winds and seas higher in and near thunderstorms.

$$

GMZ455-301800-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA out 20 NM-
1245 AM CDT Tue Sep 30 2025

.TODAY...North winds around 5 knots. Seas 1 foot or less.
.TONIGHT...North winds 5 to 10 knots. Seas 1 foot or less.
.WEDNESDAY...North winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: North 1 foot at 2 seconds.
.WEDNESDAY NIGHT...South winds around 5 knots, becoming southeast
after midnight. Seas 1 foot or less. Wave Detail: East 1 foot at
2 seconds. A slight chance of showers and thunderstorms after
midnight.
.THURSDAY...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 in the morning, then a chance of showers and
thunderstorms in the afternoon.
.THURSDAY NIGHT...East winds 10 to 15 knots with gusts up to
20 knots. Seas 2 to 3 feet. Wave Detail: East 2 feet at
3 seconds. A chance of showers. A chance of thunderstorms early
in the evening, then a slight chance of thunderstorms in the late
evening and overnight.
.FRIDAY...East winds 10 to 15 knots with gusts up to 20 knots.
Seas 2 to 3 feet. A chance of showers. A slight chance of
thunderstorms in the morning, then a chance of thunderstorms in
the afternoon.
.FRIDAY NIGHT...East winds 10 to 15 knots with gusts up to
20 knots. Seas 2 to 3 feet. A chance of thunderstorms early in
the evening, then a slight chance of thunderstorms late in the
evening. A chance of showers.
.SATURDAY...East winds 10 to 15 knots with gusts up to 20 knots.
Seas 2 to 3 feet. A chance of showers. A slight chance of
thunderstorms in the afternoon.
.SATURDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet. A
slight chance of thunderstorms early in the evening. A chance of
showers.

Winds and seas higher in and near thunderstorms.

$$

GMZ470-301800-
Coastal waters from Cameron LA to High Island TX from 20 to 60 NM-
1245 AM CDT Tue Sep 30 2025

.TODAY...North winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Northeast 2 feet at 5 seconds.
.TONIGHT...North winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: Northeast 1 foot at 4 seconds.
.WEDNESDAY...Northeast winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: Northeast 1 foot at 3 seconds.
.WEDNESDAY NIGHT...Southwest winds around 5 knots, becoming
northwest after midnight. Seas 1 foot or less. Wave Detail:
Northwest 1 foot at 2 seconds and northeast 1 foot at 4 seconds.
.THURSDAY...North winds 5 to 10 knots, becoming east in the
afternoon. Seas 1 foot or less, then around 2 feet in the
afternoon. Wave Detail: Northeast 1 foot at 3 seconds. A slight
chance of showers. A slight chance of thunderstorms in the
afternoon.
.THURSDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet.
Wave Detail: East 3 feet at 5 seconds. A chance of showers with a
slight chance of thunderstorms.
.FRIDAY...East winds 15 to 20 knots. Seas 3 to 4 feet. A chance
of showers with a slight chance of thunderstorms.
.FRIDAY NIGHT...East winds 10 to 15 knots with gusts up to
20 knots. Seas 3 to 4 feet. A slight chance of thunderstorms
early in the evening. A chance of showers.
.SATURDAY...East winds 10 to 15 knots with gusts up to 20 knots.
Seas 3 to 4 feet. A chance of showers.
.SATURDAY NIGHT...East winds 10 to 15 knots with gusts up to
20 knots. Seas 3 to 4 feet. A chance of showers.

Winds and seas higher in and near thunderstorms.

$$

GMZ472-301800-
Coastal waters from Intracoastal City to Cameron LA from 20 to
60 NM-
1245 AM CDT Tue Sep 30 2025

.TODAY...North winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: North 1 foot at 2 seconds and east 1 foot at 5 seconds.
.TONIGHT...North winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: North 1 foot at 3 seconds and southeast 1 foot at
4 seconds.
.WEDNESDAY...North winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: North 1 foot at 3 seconds.
.WEDNESDAY NIGHT...Northwest winds around 5 knots, becoming east
after midnight. Seas 1 foot or less. Wave Detail: North 1 foot at
4 seconds. A slight chance of showers after midnight.
.THURSDAY...East winds 5 to 10 knots. Seas 1 foot or less, then
around 2 feet in the afternoon. Wave Detail: East 2 feet at
4 seconds. A slight chance of showers and thunderstorms in the
morning, then a chance of showers and thunderstorms in the
afternoon.
.THURSDAY NIGHT...East winds 10 to 15 knots with gusts up to
20 knots. Seas 2 to 4 feet. Wave Detail: East 4 feet at
5 seconds. Showers likely. A chance of thunderstorms early in the
evening, then a slight chance of thunderstorms in the late
evening and overnight.
.FRIDAY...East winds 15 to 20 knots. Seas 3 to 5 feet,
occasionally to 6 feet. A slight chance of thunderstorms. Showers
likely, mainly in the morning.
.FRIDAY NIGHT...East winds 15 to 20 knots. Seas 3 to 5 feet,
occasionally to 6 feet. A slight chance of thunderstorms early in
the evening. A chance of showers.
.SATURDAY...East winds 10 to 15 knots with gusts up to 20 knots.
Seas 3 to 5 feet, occasionally to 6 feet. A chance of showers. A
slight chance of thunderstorms in the afternoon.
.SATURDAY NIGHT...East winds 10 to 15 knots with gusts up to
20 knots. Seas 3 to 4 feet. A chance of showers.

Winds and seas higher in and near thunderstorms.

$$

GMZ475-301800-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA from 20 to 60 NM-
1245 AM CDT Tue Sep 30 2025

.TODAY...North winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: Northeast 1 foot at 4 seconds.
.TONIGHT...North winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: Northwest 1 foot at 2 seconds and east 1 foot at
4 seconds.
.WEDNESDAY...North winds 5 to 10 knots. Seas 1 foot or less, then
around 2 feet in the afternoon. Wave Detail: Northeast 1 foot at
4 seconds.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: North 1 foot at 3 seconds. A slight chance of
showers in the evening, then a chance of showers with a slight
chance of thunderstorms after midnight.
.THURSDAY...Northeast winds 5 to 10 knots, becoming east 10 to
15 knots in the afternoon. Seas 2 to 3 feet. Wave Detail: East
3 feet at 4 seconds. A chance of showers with a slight chance of
thunderstorms in the morning, then showers likely with a chance
of thunderstorms in the afternoon.
.THURSDAY NIGHT...East winds 15 to 20 knots. Seas 3 to 5 feet,
occasionally to 6 feet. Wave Detail: East 5 feet at 6 seconds.
Showers with a chance of thunderstorms.
.FRIDAY...East winds 15 to 20 knots. Seas 4 to 5 feet,
occasionally to 6 feet. Showers likely.
.FRIDAY NIGHT...East winds 15 to 20 knots. Seas 5 to 7 feet,
occasionally to 9 feet. Showers likely. A chance of thunderstorms
early in the evening, then a slight chance of thunderstorms in
the late evening and overnight.
.SATURDAY...East winds 15 to 20 knots. Seas 4 to 6 feet,
occasionally to 8 feet, subsiding to 3 to 4 feet in the
afternoon. Showers likely with a slight chance of thunderstorms.
.SATURDAY NIGHT...East winds 15 to 20 knots. Seas 3 to 5 feet,
occasionally to 6 feet. Showers likely with a slight chance of
thunderstorms.

Winds and seas higher in and near thunderstorms.

$$