464
FZUS54 KLCH 162009
CWFLCH

Coastal Waters Forecast
National Weather Service Lake Charles LA
309 PM CDT Sun Aug 16 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.

GMZ400-170900-
309 PM CDT Sun Aug 16 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...

A light onshore flow is anticipated through the middle this week.

$$

GMZ430-170900-
Sabine Lake-
309 PM CDT Sun Aug 16 2026

.TONIGHT...Southwest winds 5 to 10 knots, becoming west late.
Lake waters light chop.
.MONDAY...West winds around 5 knots, becoming south in the
afternoon. Lake waters light chop.
.MONDAY NIGHT...Southwest 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...Southwest winds 5 to 10 knots. Lake waters light
chop.
.WEDNESDAY NIGHT...Southwest winds 5 to 10 knots. Lake waters
light chop.
.THURSDAY...Southwest winds 5 to 10 knots. Lake waters light
chop.
.THURSDAY NIGHT...Southwest winds 5 to 10 knots. Lake waters
light chop.
.FRIDAY...Southwest winds 5 to 10 knots. Lake waters light chop.
.FRIDAY NIGHT...Southwest winds 5 to 10 knots. Lake waters light
chop.

$$

GMZ432-170900-
Calcasieu Lake-
309 PM CDT Sun Aug 16 2026

.TONIGHT...Southwest winds 5 to 10 knots, becoming west late.
Lake waters light chop.
.MONDAY...West winds around 5 knots, becoming southwest in the
afternoon. Lake waters light chop.
.MONDAY NIGHT...Southwest winds 5 to 10 knots. Lake waters light
chop.
.TUESDAY...West winds 5 to 10 knots. Lake waters light chop.
.TUESDAY NIGHT...Southwest winds 5 to 10 knots. Lake waters light
chop.
.WEDNESDAY...Southwest winds 5 to 10 knots. Lake waters light
chop.
.WEDNESDAY NIGHT...Southwest winds 5 to 10 knots. Lake waters
light chop.
.THURSDAY...Southwest winds 5 to 10 knots. Lake waters light
chop.
.THURSDAY NIGHT...Southwest winds 5 to 10 knots. Lake waters
light chop.
.FRIDAY...Southwest winds 5 to 10 knots. Lake waters light chop.
.FRIDAY NIGHT...Southwest winds 5 to 10 knots. Lake waters light
chop. A slight chance of showers and thunderstorms in the
evening.

Winds and waves higher in and near thunderstorms.

$$

GMZ435-170900-
Vermilion and West Cote Blanche Bays-
309 PM CDT Sun Aug 16 2026

.TONIGHT...Southwest winds 5 to 10 knots, becoming west late. Bay
waters light chop.
.MONDAY...West winds around 5 knots, becoming southwest in the
afternoon. Bay waters light chop.
.MONDAY NIGHT...Southwest winds 5 to 10 knots. Bay waters light
chop.
.TUESDAY...West winds 5 to 10 knots, becoming southwest in the
afternoon. Bay waters light chop.
.TUESDAY NIGHT...Southwest winds around 10 knots. Bay waters
light chop.
.WEDNESDAY...West winds 5 to 10 knots. Bay waters light chop.
.WEDNESDAY NIGHT...Southwest winds 5 to 10 knots. Bay waters
light chop.
.THURSDAY...Southwest winds 5 to 10 knots. Bay waters light chop.
.THURSDAY NIGHT...Southwest winds 5 to 10 knots. Bay waters light
chop.
.FRIDAY...West winds 5 to 10 knots. Bay waters light chop. A
slight chance of showers and thunderstorms in the afternoon.
.FRIDAY NIGHT...Southwest winds 5 to 10 knots. Bay waters light
chop. A slight chance of showers and thunderstorms in the
evening.

Winds and waves higher in and near thunderstorms.

$$

GMZ436-170900-
Atchafalaya and East Cote Blanche Bays-
309 PM CDT Sun Aug 16 2026

.TONIGHT...Southwest winds 5 to 10 knots, becoming west late. Bay
waters light chop.
.MONDAY...West winds 5 to 10 knots. Bay waters light chop.
.MONDAY NIGHT...Southwest winds 5 to 10 knots. Bay waters light
chop.
.TUESDAY...West winds 5 to 10 knots. Bay waters light chop.
.TUESDAY NIGHT...West winds 5 to 10 knots. Bay waters light chop.
.WEDNESDAY...West winds 5 to 10 knots. Bay waters light chop.
.WEDNESDAY NIGHT...Southwest winds 5 to 10 knots. Bay waters
light chop.
.THURSDAY...West winds 5 to 10 knots. Bay waters light chop.
.THURSDAY NIGHT...Southwest winds 5 to 10 knots. Bay waters light
chop.
.FRIDAY...West winds 5 to 10 knots. Bay waters light chop. A
slight chance of showers and thunderstorms in the afternoon.
.FRIDAY NIGHT...Southwest winds 5 to 10 knots. Bay waters light
chop. A slight chance of showers and thunderstorms after
midnight.

Winds and waves higher in and near thunderstorms.

$$

GMZ450-170900-
Coastal waters from Cameron LA to High Island TX out 20 NM-
309 PM CDT Sun Aug 16 2026

.TONIGHT...South winds around 10 knots, becoming southwest late.
Seas around 2 feet. Wave Detail: South 1 foot at 4 seconds.
.MONDAY...West winds 5 to 10 knots, becoming southwest in the
afternoon. Seas 1 foot or less. Wave Detail: South 1 foot at
5 seconds.
.MONDAY NIGHT...Southwest winds around 10 knots. Seas around
2 feet. Wave Detail: South 2 feet at 4 seconds.
.TUESDAY...Southwest winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: Southwest 2 feet at 4 seconds.
.TUESDAY NIGHT...Southwest winds 10 to 15 knots. Seas around
2 feet. Wave Detail: Southwest 2 feet at 3 seconds.
.WEDNESDAY...Southwest winds 10 to 15 knots. Seas around 2 feet.
Wave Detail: Southwest 2 feet at 4 seconds.
.WEDNESDAY NIGHT...Southwest winds 10 to 15 knots. Seas around
2 feet.
.THURSDAY...Southwest winds 10 to 15 knots. Seas around 2 feet.
.THURSDAY NIGHT...Southwest winds 10 to 15 knots. Seas around
2 feet.
.FRIDAY...Southwest winds 10 to 15 knots. Seas around 2 feet.
.FRIDAY NIGHT...Southwest winds 10 to 15 knots. Seas around
2 feet.

$$

GMZ452-170900-
Coastal waters from Intracoastal City to Cameron LA out 20 NM-
309 PM CDT Sun Aug 16 2026

.TONIGHT...Southwest winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: Southwest 1 foot at 3 seconds.
.MONDAY...West winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: Southwest 1 foot at 4 seconds.
.MONDAY NIGHT...Southwest winds around 10 knots. Seas around
2 feet. Wave Detail: Southwest 2 feet at 3 seconds.
.TUESDAY...West winds 5 to 10 knots. Seas around 2 feet in the
morning, then 1 foot or less. Wave Detail: Southwest 2 feet at
4 seconds, becoming southwest 1 foot at 4 seconds.
.TUESDAY NIGHT...Southwest winds around 10 knots. Seas around
2 feet. Wave Detail: Southwest 2 feet at 3 seconds.
.WEDNESDAY...West winds around 10 knots. Seas around 2 feet. Wave
Detail: Southwest 2 feet at 4 seconds.
.WEDNESDAY NIGHT...Southwest winds 10 to 15 knots. Seas around
2 feet.
.THURSDAY...Southwest winds 10 to 15 knots, diminishing to 5 to
10 knots in the afternoon. Seas around 2 feet.
.THURSDAY NIGHT...Southwest winds 10 to 15 knots. Seas around
2 feet.
.FRIDAY...West winds 10 to 15 knots, becoming southwest 5 to
10 knots in the afternoon. Seas around 2 feet.
.FRIDAY NIGHT...Southwest winds 10 to 15 knots. Seas around
2 feet. A slight chance of showers and thunderstorms after
midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ455-170900-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA out 20 NM-
309 PM CDT Sun Aug 16 2026

.TONIGHT...Southwest winds around 5 knots. Seas 1 foot or less.
Wave Detail: Southwest 1 foot at 3 seconds.
.MONDAY...West winds around 5 knots, increasing to 5 to 10 knots
in the afternoon. Seas 1 foot or less. Wave Detail: West 1 foot
at 3 seconds.
.MONDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or
less. Wave Detail: Southwest 1 foot at 3 seconds.
.TUESDAY...West winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: West 1 foot at 3 seconds.
.TUESDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or
less. Wave Detail: West 1 foot at 3 seconds.
.WEDNESDAY...West winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: West 1 foot at 3 seconds.
.WEDNESDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or
less.
.THURSDAY...West winds 5 to 10 knots. Seas 1 foot or less.
.THURSDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or
less.
.FRIDAY...West winds 5 to 10 knots. Seas 1 foot or less. A slight
chance of showers and thunderstorms in the afternoon.
.FRIDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or
less. A slight chance of showers and thunderstorms.

Winds and seas higher in and near thunderstorms.

$$

GMZ470-170900-
Coastal waters from Cameron LA to High Island TX from 20 to 60 NM-
309 PM CDT Sun Aug 16 2026

.TONIGHT...South winds 5 to 10 knots, becoming southwest late.
Seas around 2 feet. Wave Detail: Southeast 2 feet at 5 seconds
and south 1 foot at 2 seconds.
.MONDAY...Southwest winds around 5 knots. Seas around 2 feet in
the morning, then 1 foot or less. Wave Detail: South 1 foot at
5 seconds.
.MONDAY NIGHT...Southwest winds 5 to 10 knots. Seas around
2 feet. Wave Detail: South 2 feet at 5 seconds.
.TUESDAY...Southwest winds 5 to 10 knots. Seas around 2 feet in
the morning, then 1 foot or less. Wave Detail: Southwest 1 foot
at 4 seconds and southeast 1 foot at 8 seconds, becoming south
1 foot at 4 seconds and southeast 1 foot at 8 seconds.
.TUESDAY NIGHT...Southwest winds 5 to 10 knots. Seas around
2 feet. Wave Detail: Southwest 2 feet at 4 seconds and southeast
1 foot at 8 seconds.
.WEDNESDAY...Southwest winds around 10 knots. Seas around 2 feet.
Wave Detail: Southwest 2 feet at 4 seconds and southeast 1 foot
at 7 seconds.
.WEDNESDAY NIGHT...Southwest winds 10 to 15 knots. Seas around
2 feet.
.THURSDAY...Southwest winds 5 to 10 knots. Seas around 2 feet.
.THURSDAY NIGHT...Southwest winds 10 to 15 knots. Seas around
2 feet.
.FRIDAY...Southwest winds 5 to 10 knots. Seas around 2 feet.
.FRIDAY NIGHT...Southwest winds around 10 knots. Seas around
2 feet.

$$

GMZ472-170900-
Coastal waters from Intracoastal City to Cameron LA from 20 to
60 NM-
309 PM CDT Sun Aug 16 2026

.TONIGHT...Southwest winds around 5 knots. Seas around 2 feet.
Wave Detail: Southeast 1 foot at 5 seconds.
.MONDAY...West winds around 5 knots. Seas 1 foot or less. Wave
Detail: South 1 foot at 5 seconds.
.MONDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or
less, then around 2 feet after midnight. Wave Detail: Southwest
1 foot at 4 seconds and southeast 1 foot at 7 seconds, becoming
southwest 1 foot at 3 seconds and southeast 1 foot at 8 seconds.
.TUESDAY...West winds 5 to 10 knots. Seas around 2 feet in the
morning, then 1 foot or less. Wave Detail: Southwest 1 foot at
3 seconds and southeast 1 foot at 8 seconds.
.TUESDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or
less, then around 2 feet after midnight. Wave Detail: Southwest
1 foot at 3 seconds and southeast 1 foot at 8 seconds, becoming
southwest 2 feet at 3 seconds and southeast 1 foot at 7 seconds.
.WEDNESDAY...Southwest winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: Southwest 2 feet at 4 seconds and southeast 1 foot
at 7 seconds.
.WEDNESDAY NIGHT...Southwest winds 5 to 10 knots. Seas around
2 feet.
.THURSDAY...Southwest winds 5 to 10 knots. Seas around 2 feet.
.THURSDAY NIGHT...Southwest winds 5 to 10 knots. Seas around
2 feet.
.FRIDAY...West winds 5 to 10 knots. Seas around 2 feet.
.FRIDAY NIGHT...Southwest 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.

$$

GMZ475-170900-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA from 20 to 60 NM-
309 PM CDT Sun Aug 16 2026

.TONIGHT...South winds around 5 knots, becoming west late. Seas
around 2 feet this evening, then 1 foot or less. Wave Detail:
South 1 foot at 5 seconds.
.MONDAY...West winds around 5 knots. Seas 1 foot or less. Wave
Detail: South 1 foot at 5 seconds.
.MONDAY NIGHT...Southwest winds around 5 knots, increasing to
5 to 10 knots after midnight. Seas 1 foot or less. Wave Detail:
Southwest 1 foot at 4 seconds and southeast 1 foot at 8 seconds.
.TUESDAY...West winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: Southwest 1 foot at 3 seconds and southeast 1 foot at
8 seconds.
.TUESDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or
less, then around 2 feet after midnight. Wave Detail: West 1 foot
at 3 seconds and southeast 1 foot at 8 seconds, becoming
southwest 1 foot at 3 seconds and southeast 1 foot at 7 seconds.
.WEDNESDAY...West winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: West 1 foot at 3 seconds and southeast 1 foot at
6 seconds.
.WEDNESDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or
less, then around 2 feet after midnight.
.THURSDAY...West winds 5 to 10 knots. Seas around 2 feet in the
morning, then 1 foot or less.
.THURSDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or
less, then around 2 feet after midnight.
.FRIDAY...West winds 5 to 10 knots. Seas around 2 feet. A slight
chance of showers and thunderstorms in the morning.
.FRIDAY NIGHT...Southwest 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.

$$