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FZUS54 KLCH 181749
CWFLCH

Coastal Waters Forecast
National Weather Service Lake Charles LA
1249 PM CDT Fri Jul 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.

GMZ400-190600-
1249 PM CDT Fri Jul 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...

Outside of thunderstorms winds will remain light and onshore.
High pressure is expected to remain over the northeast gulf and
southeast states.

$$

GMZ430-190600-
Sabine Lake-
1249 PM CDT Fri Jul 18 2025

.TONIGHT...South winds around 5 knots. Lake waters smooth. A
chance of thunderstorms with a slight chance of showers early
this evening. A slight chance of showers and thunderstorms late.
.SATURDAY...Southwest winds 5 to 10 knots. Lake waters light
chop. A chance of thunderstorms. A chance of showers.
.SATURDAY NIGHT...South winds 5 to 10 knots. Lake waters light
chop.
.SUNDAY...South 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.
.MONDAY...South winds 5 to 10 knots. Lake waters light chop.
.MONDAY NIGHT...South winds 5 to 10 knots. Lake waters light
chop.
.TUESDAY...Southwest winds around 5 knots, becoming south in the
afternoon. Lake waters light chop.
.TUESDAY NIGHT...South winds 5 to 10 knots, becoming southwest
after midnight. Lake waters light chop.
.WEDNESDAY...West winds around 5 knots, becoming southwest in the
afternoon. Lake waters smooth.
.WEDNESDAY NIGHT...Southwest winds around 5 knots. Lake waters
smooth.

Winds and waves higher in and near thunderstorms.

$$

GMZ432-190600-
Calcasieu Lake-
1249 PM CDT Fri Jul 18 2025

.TONIGHT...Southwest winds around 5 knots. Lake waters smooth. A
chance of showers and thunderstorms early this evening. A slight
chance of showers and thunderstorms late this evening and
overnight.
.SATURDAY...Southwest winds 5 to 10 knots. Lake waters light
chop. A chance of thunderstorms. A chance of showers.
.SATURDAY NIGHT...South winds 5 to 10 knots. Lake waters light
chop.
.SUNDAY...South 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.
.MONDAY...South winds 5 to 10 knots. Lake waters light chop.
.MONDAY NIGHT...South winds 5 to 10 knots. Lake waters light
chop.
.TUESDAY...Southwest winds 5 to 10 knots. Lake waters light chop.
.TUESDAY NIGHT...Southwest winds 5 to 10 knots. Lake waters light
chop.
.WEDNESDAY...West winds around 5 knots, becoming southwest in the
afternoon. Lake waters smooth.
.WEDNESDAY NIGHT...Southwest winds 5 to 10 knots, becoming west
after midnight. Lake waters light chop. A slight chance of
showers and thunderstorms after midnight.

Winds and waves higher in and near thunderstorms.

$$

GMZ435-190600-
Vermilion and West Cote Blanche Bays-
1249 PM CDT Fri Jul 18 2025

.TONIGHT...Southwest winds 5 to 10 knots. Bay waters light chop.
A slight chance of showers and thunderstorms late.
.SATURDAY...Southwest winds 5 to 10 knots. Bay waters light chop.
A chance of showers and thunderstorms.
.SATURDAY NIGHT...South winds 5 to 10 knots. Bay waters light
chop.
.SUNDAY...Southwest winds 5 to 10 knots. Bay waters light chop. A
slight chance of showers and thunderstorms in the morning, then a
chance of showers and thunderstorms in the afternoon.
.SUNDAY NIGHT...South winds 5 to 10 knots. Bay waters light chop.
.MONDAY...Southwest winds 5 to 10 knots. Bay waters light chop. A
slight chance of showers and thunderstorms.
.MONDAY NIGHT...Southwest winds 5 to 10 knots. Bay waters light
chop.
.TUESDAY...Southwest winds around 5 knots. Bay waters smooth. A
slight chance of showers and thunderstorms in the afternoon.
.TUESDAY NIGHT...Southwest winds around 5 knots. Bay waters
smooth.
.WEDNESDAY...Northwest winds around 5 knots. Bay waters smooth. A
slight chance of showers and thunderstorms in the morning, then a
chance of showers and thunderstorms in the afternoon.
.WEDNESDAY NIGHT...Southwest winds around 5 knots, becoming
northwest after midnight. Bay waters smooth. A slight chance of
showers and thunderstorms in the evening, then a chance of
showers and thunderstorms after midnight.

Winds and waves higher in and near thunderstorms.

$$

GMZ436-190600-
Atchafalaya and East Cote Blanche Bays-
1249 PM CDT Fri Jul 18 2025

.TONIGHT...South winds 5 to 10 knots. Bay waters light chop. A
slight chance of showers and thunderstorms early this evening. A
slight chance of showers and thunderstorms late.
.SATURDAY...Southwest winds around 5 knots. Bay waters smooth. A
chance of showers and thunderstorms.
.SATURDAY NIGHT...South winds around 5 knots. Bay waters smooth.
A slight chance of showers and thunderstorms.
.SUNDAY...Southwest winds around 5 knots. Bay waters smooth. A
chance of showers and thunderstorms.
.SUNDAY NIGHT...South winds around 5 knots. Bay waters smooth.
.MONDAY...Southwest winds around 5 knots. Bay waters smooth. A
slight chance of showers and thunderstorms.
.MONDAY NIGHT...Southwest winds around 5 knots. Bay waters
smooth.
.TUESDAY...West winds around 5 knots. Bay waters smooth. A slight
chance of showers and thunderstorms.
.TUESDAY NIGHT...West winds around 5 knots. Bay waters smooth.
.WEDNESDAY...Northwest winds around 5 knots. Bay waters smooth. A
chance of showers and thunderstorms.
.WEDNESDAY NIGHT...Northwest winds around 5 knots. Bay waters
smooth. A slight chance of showers and thunderstorms in the
evening, then a chance of showers and thunderstorms after
midnight.

Winds and waves higher in and near thunderstorms.

$$

GMZ450-190600-
Coastal waters from Cameron LA to High Island TX out 20 NM-
1249 PM CDT Fri Jul 18 2025

.TONIGHT...South winds 5 to 10 knots. Seas 1 foot or less, then
around 2 feet after midnight. Wave Detail: South 1 foot at
4 seconds, becoming south 2 feet at 4 seconds. A chance of
showers and thunderstorms early this evening. A slight chance of
showers and thunderstorms late.
.SATURDAY...Southwest winds around 10 knots. Seas around 2 feet.
Wave Detail: Southwest 2 feet at 4 seconds. A chance of showers
and thunderstorms.
.SATURDAY NIGHT...South winds 10 to 15 knots. Seas around 2 feet.
Wave Detail: South 2 feet at 4 seconds.
.SUNDAY...South winds around 10 knots. Seas around 2 feet. Wave
Detail: South 2 feet at 4 seconds. A slight chance of showers and
thunderstorms in the morning.
.SUNDAY NIGHT...South winds around 10 knots. Seas around 2 feet.
.MONDAY...South winds around 10 knots. Seas around 2 feet. Wave
Detail: South 2 feet at 4 seconds. A slight chance of showers and
thunderstorms in the morning.
.MONDAY NIGHT...South winds around 10 knots. Seas around 2 feet.
.TUESDAY...South winds 5 to 10 knots. Seas around 2 feet.
.TUESDAY NIGHT...South winds around 10 knots. Seas around 2 feet.
.WEDNESDAY...Southwest winds 5 to 10 knots. Seas around 2 feet.
.WEDNESDAY NIGHT...Southwest winds 5 to 10 knots. Seas 2 to
3 feet. A slight chance of showers and thunderstorms after
midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ452-190600-
Coastal waters from Intracoastal City to Cameron LA out 20 NM-
1249 PM CDT Fri Jul 18 2025

.TONIGHT...South winds 5 to 10 knots. Seas 1 foot or less, then
around 2 feet after midnight. Wave Detail: Southwest 1 foot at
4 seconds, becoming southwest 2 feet at 4 seconds. A chance of
showers and thunderstorms late.
.SATURDAY...Southwest winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: Southwest 2 feet at 4 seconds. A chance of showers
and thunderstorms.
.SATURDAY NIGHT...South winds around 10 knots. Seas 1 foot or
less, then around 2 feet after midnight. Wave Detail: South
1 foot at 4 seconds, becoming south 2 feet at 5 seconds. A slight
chance of showers and thunderstorms after midnight.
.SUNDAY...South winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: South 2 feet at 5 seconds. A chance of showers and
thunderstorms, mainly in the morning.
.SUNDAY NIGHT...South winds around 10 knots. Seas 1 foot or less,
then around 2 feet after midnight. Wave Detail: South 1 foot at
5 seconds.
.MONDAY...South winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: South 1 foot at 5 seconds. A slight chance of
thunderstorms in the morning. A slight chance of showers.
.MONDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet.
.TUESDAY...Southwest winds 5 to 10 knots. Seas around 2 feet in
the morning, then 1 foot or less. A slight chance of showers and
thunderstorms in the morning.
.TUESDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or
less.
.WEDNESDAY...West winds around 5 knots. Seas 1 foot or less. A
slight chance of showers and thunderstorms.
.WEDNESDAY NIGHT...Southwest winds 5 to 10 knots, becoming west
after midnight. Seas 1 foot or less, then around 2 feet after
midnight. A chance of showers and thunderstorms after midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ455-190600-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA out 20 NM-
1249 PM CDT Fri Jul 18 2025

.TONIGHT...South winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: Southwest 1 foot at 3 seconds. A chance of showers and
thunderstorms late.
.SATURDAY...Southwest winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: Southwest 1 foot at 3 seconds. A chance of showers
and thunderstorms.
.SATURDAY NIGHT...South winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: Southwest 1 foot at 3 seconds. A slight chance of
showers and thunderstorms.
.SUNDAY...South winds around 5 knots. Seas 1 foot or less. Wave
Detail: South 1 foot at 2 seconds. A chance of showers and
thunderstorms, mainly in the morning.
.SUNDAY NIGHT...South winds around 5 knots. Seas 1 foot or less.
A slight chance of showers and thunderstorms after midnight.
.MONDAY...Southwest winds around 5 knots. Seas 1 foot or less.
Wave Detail: Southwest 1 foot at 3 seconds. A slight chance of
showers and thunderstorms.
.MONDAY NIGHT...Southwest winds around 5 knots. Seas 1 foot or
less.
.TUESDAY...Southwest winds around 5 knots. Seas 1 foot or less. A
slight chance of showers and thunderstorms.
.TUESDAY NIGHT...Southwest winds around 5 knots. Seas 1 foot or
less. A slight chance of showers and thunderstorms after
midnight.
.WEDNESDAY...Northwest winds around 5 knots. Seas 1 foot or less.
A chance of showers and thunderstorms.
.WEDNESDAY NIGHT...West winds around 5 knots. Seas 1 foot or
less. A slight chance of showers and thunderstorms in the
evening, then a chance of showers and thunderstorms after
midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ470-190600-
Coastal waters from Cameron LA to High Island TX from 20 to 60 NM-
1249 PM CDT Fri Jul 18 2025

.TONIGHT...South winds 5 to 10 knots. Seas 1 foot or less, then
around 2 feet after midnight. Wave Detail: South 1 foot at
3 seconds, becoming south 2 feet at 4 seconds. A slight chance of
showers and thunderstorms early this evening. A slight chance of
showers and thunderstorms late.
.SATURDAY...South winds around 10 knots. Seas around 2 feet. Wave
Detail: South 2 feet at 4 seconds. A chance of showers and
thunderstorms.
.SATURDAY NIGHT...South winds around 10 knots. Seas around
2 feet. Wave Detail: Southeast 2 feet at 5 seconds. A slight
chance of showers after midnight.
.SUNDAY...South winds around 10 knots. Seas around 2 feet. Wave
Detail: South 2 feet at 5 seconds. A slight chance of
thunderstorms in the morning. A slight chance of showers.
.SUNDAY NIGHT...South winds around 10 knots. Seas around 2 feet.
Wave Detail: South 2 feet at 6 seconds.
.MONDAY...South winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: South 2 feet at 5 seconds. A slight chance of
thunderstorms in the morning. A slight chance of showers.
.MONDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet.
.TUESDAY...South winds 5 to 10 knots. Seas around 2 feet. A
slight chance of showers and thunderstorms in the morning.
.TUESDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet.
.WEDNESDAY...West winds around 5 knots. Seas around 2 feet. A
slight chance of showers and thunderstorms in the morning.
.WEDNESDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet.
A slight chance of showers and thunderstorms after midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ472-190600-
Coastal waters from Intracoastal City to Cameron LA from 20 to
60 NM-
1249 PM CDT Fri Jul 18 2025

.TONIGHT...South winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: South 2 feet at 4 seconds and northwest 1 foot at
3 seconds. A chance of showers and thunderstorms late.
.SATURDAY...South winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: South 2 feet at 4 seconds. A chance of showers and
thunderstorms.
.SATURDAY 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 after midnight.
.SUNDAY...South winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southeast 2 feet at 5 seconds. A chance of showers and
thunderstorms, mainly in the morning.
.SUNDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: South 2 feet at 6 seconds.
.MONDAY...South winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: South 1 foot at 6 seconds. A chance of showers and
thunderstorms in the morning, then a slight chance of showers in
the afternoon.
.MONDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet.
.TUESDAY...Southwest winds 5 to 10 knots. Seas around 2 feet. A
chance of showers with a slight chance of thunderstorms in the
morning.
.TUESDAY NIGHT...Southwest winds 5 to 10 knots. Seas around
2 feet.
.WEDNESDAY...West winds around 5 knots. Seas around 2 feet in the
morning, then 1 foot or less. A chance of showers and
thunderstorms, mainly in the morning.
.WEDNESDAY NIGHT...Southwest winds around 5 knots, becoming west
after midnight. Seas 1 foot or less, then around 2 feet after
midnight. A chance of showers and thunderstorms after midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ475-190600-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA from 20 to 60 NM-
1249 PM CDT Fri Jul 18 2025

.TONIGHT...South winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southwest 2 feet at 4 seconds and east 1 foot at
5 seconds. A slight chance of showers and thunderstorms early
this evening. A slight chance of showers and thunderstorms after
midnight, then a chance of showers and thunderstorms late.
.SATURDAY...South winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: South 2 feet at 5 seconds. A chance of showers and
thunderstorms.
.SATURDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet
in the evening, then 1 foot or less. Wave Detail: Southeast
2 feet at 5 seconds, becoming south 1 foot at 5 seconds. A slight
chance of thunderstorms. A chance of showers, mainly in the
evening.
.SUNDAY...South winds 5 to 10 knots. Seas 1 foot or less, then
around 2 feet in the afternoon. Wave Detail: South 1 foot at
6 seconds, becoming south 2 feet at 6 seconds. A chance of
showers. A chance of thunderstorms, mainly in the morning.
.SUNDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: South 2 feet at 6 seconds. A slight chance of
showers and thunderstorms after midnight.
.MONDAY...South winds around 5 knots. Seas around 2 feet. Wave
Detail: South 2 feet at 6 seconds. A chance of showers and
thunderstorms, mainly in the morning.
.MONDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet. A
slight chance of showers and thunderstorms after midnight.
.TUESDAY...Southwest winds around 5 knots. Seas around 2 feet in
the morning, then 1 foot or less. A chance of showers and
thunderstorms, mainly in the morning.
.TUESDAY NIGHT...Southwest winds around 5 knots. Seas 1 foot or
less. A slight chance of showers and thunderstorms after
midnight.
.WEDNESDAY...Northwest winds around 5 knots. Seas 1 foot or less.
A chance of showers and thunderstorms.
.WEDNESDAY NIGHT...Northwest winds 5 to 10 knots. Seas 1 foot or
less, then around 2 feet after midnight. A slight chance of
showers and thunderstorms in the evening, then a chance of
showers and thunderstorms after midnight.

Winds and seas higher in and near thunderstorms.

$$