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FZUS54 KLCH 180620
CWFLCH

Coastal Waters Forecast
National Weather Service Lake Charles LA
1220 AM CST Tue Nov 18 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.

GMZ400-181900-
1220 AM CST Tue Nov 18 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...

A series of waves moving north of the region will bring about a
prolonged period of variable pressure fields and onshore winds at a
breezy to occasionally moderate flow.

Late in the work week, a deeply amplified weather system will be
approaching from the west bringing about stronger onshore winds and
periods of showers and thunderstorms. Winds and seas will gradually
increase from early Thursday into Friday.


$$

GMZ430-181900-
Sabine Lake-
1220 AM CST Tue Nov 18 2025

.TODAY...South winds 5 to 10 knots. Lake waters light chop.
.TONIGHT...South winds 5 to 10 knots. Lake waters light chop.
.WEDNESDAY...Southeast winds 5 to 10 knots. Lake waters light
chop.
.WEDNESDAY NIGHT...Southeast winds 5 to 10 knots. Lake waters
light chop.
.THURSDAY...Southeast winds 5 to 10 knots, increasing to 10 to
15 knots in the afternoon. Lake waters choppy. A chance of
showers in the afternoon.
.THURSDAY NIGHT...Southeast winds 5 to 10 knots. Lake waters
light chop. A slight chance of thunderstorms in the evening. A
chance of showers.
.FRIDAY...South winds 5 to 10 knots. Lake waters light chop. A
slight chance of thunderstorms. Showers likely, mainly in the
morning.
.FRIDAY NIGHT...Southwest winds 5 to 10 knots, becoming west
after midnight. Lake waters light chop. A slight chance of
showers in the evening, then a chance of showers after midnight.
.SATURDAY...Northwest winds 5 to 10 knots. Lake waters light
chop. A chance of showers.
.SATURDAY NIGHT...North winds 5 to 10 knots. Lake waters light
chop. A slight chance of showers.

Winds and waves higher in and near thunderstorms.

$$

GMZ432-181900-
Calcasieu Lake-
1220 AM CST Tue Nov 18 2025

.TODAY...South winds 5 to 10 knots. Lake waters light chop.
.TONIGHT...South winds 5 to 10 knots. Lake waters light chop.
.WEDNESDAY...Southeast winds around 5 knots, increasing to around
10 knots in the afternoon. Lake waters light chop.
.WEDNESDAY NIGHT...Southeast winds 5 to 10 knots. Lake waters
light chop.
.THURSDAY...Southeast winds 5 to 10 knots, increasing to 10 to
15 knots with gusts up to 20 knots in the afternoon. Lake waters
choppy. A slight chance of showers in the afternoon.
.THURSDAY NIGHT...Southeast winds 10 to 15 knots. Lake waters
choppy. A slight chance of thunderstorms in the evening. A chance
of showers.
.FRIDAY...South winds around 10 knots. Lake waters light chop.
Showers likely with a slight chance of thunderstorms in the
morning, then a chance of showers in the afternoon.
.FRIDAY NIGHT...Southwest winds 5 to 10 knots, becoming west
after midnight. Lake waters light chop. A slight chance of
showers in the evening, then a chance of showers after midnight.
.SATURDAY...Northwest winds 5 to 10 knots. Lake waters light
chop. A slight chance of showers in the morning, then a chance of
showers in the afternoon.
.SATURDAY NIGHT...North winds 5 to 10 knots. Lake waters light
chop. A slight chance of showers.

Winds and waves higher in and near thunderstorms.

$$

GMZ435-181900-
Vermilion and West Cote Blanche Bays-
1220 AM CST Tue Nov 18 2025

.TODAY...Southeast winds 5 to 10 knots. Bay waters light chop.
.TONIGHT...Southeast winds 5 to 10 knots. Bay waters light chop.
.WEDNESDAY...Southeast winds 5 to 10 knots. Bay waters light
chop.
.WEDNESDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters
light chop.
.THURSDAY...Southeast winds 5 to 10 knots, increasing to 10 to
15 knots in the afternoon. Bay waters choppy.
.THURSDAY NIGHT...Southeast winds 10 to 15 knots. Bay waters
choppy. A chance of showers with a slight chance of
thunderstorms.
.FRIDAY...South winds around 10 knots. Bay waters light chop. A
chance of showers.
.FRIDAY NIGHT...Southwest winds 5 to 10 knots. Bay waters light
chop. A slight chance of showers in the evening, then a chance of
showers after midnight.
.SATURDAY...Northwest winds 5 to 10 knots. Bay waters light chop.
A slight chance of showers.
.SATURDAY NIGHT...Northwest winds 5 to 10 knots, becoming north
after midnight. Bay waters light chop. A slight chance of
showers.

Winds and waves higher in and near thunderstorms.

$$

GMZ436-181900-
Atchafalaya and East Cote Blanche Bays-
1220 AM CST Tue Nov 18 2025

.TODAY...Southeast winds 5 to 10 knots. Bay waters light chop.
Patchy dense fog early this morning.
.TONIGHT...Southeast winds 5 to 10 knots. Bay waters light chop.
Patchy fog after midnight.
.WEDNESDAY...Southeast winds around 5 knots. Bay waters smooth.
Patchy fog in the morning.
.WEDNESDAY NIGHT...Southeast winds around 5 knots. Bay waters
smooth.
.THURSDAY...Southeast winds 5 to 10 knots. Bay waters light chop.
.THURSDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters light
chop. A chance of showers with a slight chance of thunderstorms.
.FRIDAY...South winds 5 to 10 knots. Bay waters light chop. A
chance of showers.
.FRIDAY NIGHT...Southwest winds around 5 knots. Bay waters
smooth. A slight chance of showers.
.SATURDAY...West winds 5 to 10 knots. Bay waters light chop. A
slight chance of showers.
.SATURDAY NIGHT...Northwest winds around 5 knots, becoming
northeast after midnight. Bay waters smooth. A slight chance of
showers.

Winds and waves higher in and near thunderstorms.

$$

GMZ450-181900-
Coastal waters from Cameron LA to High Island TX out 20 NM-
1220 AM CST Tue Nov 18 2025

.TODAY...Southeast winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: South 2 feet at 5 seconds.
.TONIGHT...Southeast winds around 10 knots. Seas around 2 feet.
Wave Detail: Southeast 2 feet at 5 seconds.
.WEDNESDAY...Southeast winds around 10 knots. Seas around 2 feet.
Wave Detail: Southeast 2 feet at 5 seconds.
.WEDNESDAY NIGHT...Southeast winds around 10 knots. Seas around
2 feet. Wave Detail: Southeast 2 feet at 5 seconds.
.THURSDAY...Southeast winds 10 to 15 knots. Seas around 2 feet.
Wave Detail: Southeast 2 feet at 5 seconds. A chance of showers
in the afternoon.
.THURSDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to
3 feet. Wave Detail: Southeast 2 feet at 4 seconds. A chance of
showers with a slight chance of thunderstorms.
.FRIDAY...South winds around 10 knots. Seas around 2 feet. A
chance of showers with a slight chance of thunderstorms.
.FRIDAY NIGHT...Southwest winds around 10 knots, becoming west
after midnight. Seas around 2 feet. A slight chance of showers
and thunderstorms in the evening, then a chance of showers after
midnight.
.SATURDAY...Northwest winds 5 to 10 knots. Seas around 2 feet. A
chance of showers.
.SATURDAY NIGHT...North winds 5 to 10 knots. Seas around 2 feet.
A slight chance of showers.

Winds and seas higher in and near thunderstorms.

$$

GMZ452-181900-
Coastal waters from Intracoastal City to Cameron LA out 20 NM-
1220 AM CST Tue Nov 18 2025

.TODAY...Southeast winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: South 2 feet at 5 seconds.
.TONIGHT...Southeast winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: Southeast 2 feet at 5 seconds.
.WEDNESDAY...Southeast winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: Southeast 2 feet at 5 seconds.
.WEDNESDAY NIGHT...Southeast winds around 10 knots. Seas around
2 feet. Wave Detail: Southeast 2 feet at 5 seconds.
.THURSDAY...Southeast winds 10 to 15 knots. Seas 2 to 3 feet.
Wave Detail: Southeast 2 feet at 5 seconds. A slight chance of
showers in the afternoon.
.THURSDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to
3 feet. Wave Detail: Southeast 3 feet at 5 seconds. A slight
chance of thunderstorms. A chance of showers in the evening, then
showers likely after midnight.
.FRIDAY...South winds around 10 knots. Seas 2 to 3 feet. A chance
of showers. A slight chance of thunderstorms in the afternoon.
.FRIDAY NIGHT...Southwest winds around 10 knots, becoming west
after midnight. Seas around 2 feet. A slight chance of showers in
the evening, then a chance of showers after midnight.
.SATURDAY...Northwest winds around 10 knots. Seas around 2 feet.
A chance of showers, mainly in the morning.
.SATURDAY NIGHT...Northwest winds around 10 knots, becoming
northeast after midnight. Seas around 2 feet. A slight chance of
showers.

Winds and seas higher in and near thunderstorms.

$$

GMZ455-181900-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA out 20 NM-
1220 AM CST Tue Nov 18 2025

.TODAY...Southeast winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: South 1 foot at 3 seconds.
.TONIGHT...Southeast winds 5 to 10 knots. Seas 1 to 2 feet. Wave
Detail: Southeast 1 foot at 2 seconds and south 1 foot at
5 seconds.
.WEDNESDAY...Southeast winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: South 1 foot at 4 seconds.
.WEDNESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 foot or
less. Wave Detail: Southeast 1 foot at 2 seconds.
.THURSDAY...Southeast winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: Southeast 1 foot at 2 seconds. A slight chance of
showers in the afternoon.
.THURSDAY NIGHT...Southeast winds around 10 knots. Seas around
2 feet. Wave Detail: South 2 feet at 7 seconds and southeast
1 foot at 3 seconds. A slight chance of thunderstorms. A chance
of showers in the evening, then showers likely after midnight.
.FRIDAY...South winds 5 to 10 knots. Seas around 2 feet. A chance
of showers. A slight chance of thunderstorms in the afternoon.
.FRIDAY NIGHT...Southwest winds 5 to 10 knots. Seas around
2 feet. A slight chance of showers in the evening, then a chance
of showers after midnight.
.SATURDAY...Northwest winds 5 to 10 knots. Seas around 2 feet. A
slight chance of showers.
.SATURDAY NIGHT...Northwest winds 5 to 10 knots, becoming
northeast after midnight. Seas around 2 feet. A slight chance of
showers.

Winds and seas higher in and near thunderstorms.

$$

GMZ470-181900-
Coastal waters from Cameron LA to High Island TX from 20 to 60 NM-
1220 AM CST Tue Nov 18 2025

.TODAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: South 3 feet at 5 seconds.
.TONIGHT...Southeast winds around 10 knots. Seas 2 to 3 feet.
Wave Detail: South 2 feet at 5 seconds.
.WEDNESDAY...Southeast winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: Southeast 2 feet at 5 seconds.
.WEDNESDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to
3 feet. Wave Detail: Southeast 3 feet at 5 seconds.
.THURSDAY...Southeast winds 10 to 15 knots. Seas 2 to 3 feet.
Wave Detail: Southeast 3 feet at 5 seconds. A chance of showers
in the afternoon.
.THURSDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to
4 feet. Wave Detail: Southeast 3 feet at 6 seconds. A slight
chance of thunderstorms in the evening. A chance of showers.
.FRIDAY...South winds around 10 knots. Seas 3 to 4 feet. A chance
of showers with a slight chance of thunderstorms.
.FRIDAY NIGHT...Southwest winds around 10 knots, becoming west
after midnight. Seas 2 to 3 feet. A slight chance of showers and
thunderstorms in the evening, then a chance of showers after
midnight.
.SATURDAY...North winds around 10 knots. Seas 2 to 3 feet. A
chance of showers, mainly in the morning.
.SATURDAY NIGHT...North winds around 10 knots. Seas 2 to 3 feet.
A slight chance of showers.

Winds and seas higher in and near thunderstorms.

$$

GMZ472-181900-
Coastal waters from Intracoastal City to Cameron LA from 20 to
60 NM-
1220 AM CST Tue Nov 18 2025

.TODAY...Southeast winds around 10 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 3 feet at 5 seconds.
.TONIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 3 feet at 5 seconds.
.WEDNESDAY...Southeast winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: Southeast 2 feet at 5 seconds.
.WEDNESDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to
3 feet. Wave Detail: Southeast 3 feet at 5 seconds.
.THURSDAY...Southeast winds 10 to 15 knots. Seas 2 to 3 feet.
Wave Detail: Southeast 3 feet at 6 seconds. A chance of showers
in the afternoon.
.THURSDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to
4 feet. Wave Detail: Southeast 4 feet at 6 seconds. A chance of
showers with a slight chance of thunderstorms.
.FRIDAY...South winds around 10 knots. Seas 3 to 4 feet. A chance
of showers. A slight chance of thunderstorms in the afternoon.
.FRIDAY NIGHT...Southwest winds around 10 knots. Seas around
3 feet. A slight chance of thunderstorms. A slight chance of
showers in the evening, then a chance of showers after midnight.
.SATURDAY...Northwest winds around 10 knots. Seas 2 to 3 feet. A
chance of showers with a slight chance of thunderstorms in the
morning, then a slight chance of showers in the afternoon.
.SATURDAY NIGHT...North winds around 10 knots, becoming northeast
after midnight. Seas 2 to 3 feet. A slight chance of showers.

Winds and seas higher in and near thunderstorms.

$$

GMZ475-181900-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA from 20 to 60 NM-
1220 AM CST Tue Nov 18 2025

.TODAY...Southeast winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: South 3 feet at 5 seconds.
.TONIGHT...Southeast winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: Southeast 2 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 around 10 knots. Seas 2 to
3 feet. Wave Detail: Southeast 3 feet at 5 seconds.
.THURSDAY...Southeast winds 10 to 15 knots. Seas 2 to 4 feet.
Wave Detail: Southeast 3 feet at 6 seconds. A slight chance of
showers in the afternoon.
.THURSDAY NIGHT...Southeast winds 10 to 15 knots with gusts up to
20 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail:
Southeast 5 feet at 7 seconds. Showers likely with a slight
chance of thunderstorms.
.FRIDAY...South winds 10 to 15 knots, becoming southwest 5 to
10 knots in the afternoon. Seas 3 to 5 feet, occasionally to
6 feet. A chance of showers. A slight chance of thunderstorms in
the afternoon.
.FRIDAY NIGHT...Southwest winds 5 to 10 knots. Seas 2 to 3 feet.
A slight chance of thunderstorms. A slight chance of showers in
the evening, then a chance of showers after midnight.
.SATURDAY...Northwest winds 5 to 10 knots. Seas 2 to 3 feet. A
slight chance of thunderstorms in the morning. A slight chance of
showers.
.SATURDAY NIGHT...Northwest winds 5 to 10 knots, becoming north
after midnight. Seas 2 to 3 feet. A slight chance of showers.

Winds and seas higher in and near thunderstorms.

$$