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FZUS54 KLCH 110539
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Coastal Waters Forecast
National Weather Service Lake Charles LA
1238 AM CDT Thu Sep 11 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.

GMZ400-111800-
1238 AM CDT Thu Sep 11 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...

Winds will primarily prevail from the east to east-northeast
throughout the forecast period. Surface high pressure ridging into
the northwest Gulf will keep winds at this pitch for the coming
days. Winds and seas in the 20 to 60 nm waters will see a period of
elevated conditions from this morning to midnight tonight between
the gradient from surface high and remnant boundary. From Friday
morning to at least early Sunday, this boundary washes out and
hot and dry conditions with low seas can be expected.

At the start of next work week, another gradient may pick up as
upper wave moves across northern Gulf states and sfc high remains
in place. This would result in elevated wind and sea conditions
once again. Small Craft Advisory conditions are not forecast at
this time.

$$

GMZ430-111800-
Sabine Lake-
1238 AM CDT Thu Sep 11 2025

.TODAY...East winds 5 to 10 knots. Lake waters light chop.
.TONIGHT...South winds around 5 knots, becoming north after
midnight. Lake waters smooth.
.FRIDAY...Northeast winds around 5 knots, becoming southeast
around 5 knots in the afternoon. Lake waters smooth.
.FRIDAY NIGHT...Southwest winds around 5 knots. Lake waters
smooth.
.SATURDAY...North winds around 5 knots, becoming southeast around
5 knots in the afternoon. Lake waters smooth.
.SATURDAY NIGHT...South winds around 5 knots. Lake waters smooth.
.SUNDAY...East winds 5 to 10 knots. Lake waters light chop.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots. Lake waters light
chop.
.MONDAY...East winds 5 to 10 knots. Lake waters light chop.
.MONDAY NIGHT...Southeast winds 5 to 10 knots. Lake waters light
chop.

$$

GMZ432-111800-
Calcasieu Lake-
1238 AM CDT Thu Sep 11 2025

.TODAY...East winds 5 to 10 knots. Lake waters light chop.
.TONIGHT...Southeast winds around 5 knots. Lake waters smooth.
.FRIDAY...Northeast winds around 5 knots, becoming southeast in
the afternoon. Lake waters smooth.
.FRIDAY NIGHT...Southwest winds around 5 knots. Lake waters
smooth.
.SATURDAY...North winds around 5 knots, becoming southeast around
5 knots in the afternoon. Lake waters smooth.
.SATURDAY NIGHT...South winds 5 to 10 knots. Lake waters light
chop.
.SUNDAY...East winds 5 to 10 knots. Lake waters light chop.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots. Lake waters light
chop.
.MONDAY...East winds 5 to 10 knots. Lake waters light chop.
.MONDAY NIGHT...Southeast winds 5 to 10 knots. Lake waters light
chop.

$$

GMZ435-111800-
Vermilion and West Cote Blanche Bays-
1238 AM CDT Thu Sep 11 2025

.TODAY...East winds 5 to 10 knots. Bay waters light chop.
.TONIGHT...Southeast winds 5 to 10 knots, becoming southwest
after midnight. Bay waters light chop.
.FRIDAY...North winds around 5 knots, becoming southeast around
5 knots in the afternoon. Bay waters smooth.
.FRIDAY NIGHT...South winds around 5 knots, becoming west around
5 knots after midnight. Bay waters smooth.
.SATURDAY...North winds around 5 knots, becoming southeast around
5 knots in the afternoon. Bay waters smooth.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters light
chop.
.SUNDAY...East winds 5 to 10 knots. Bay waters light chop.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters light
chop.
.MONDAY...East winds 5 to 10 knots. Bay waters light chop.
.MONDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters light
chop.

$$

GMZ436-111800-
Atchafalaya and East Cote Blanche Bays-
1238 AM CDT Thu Sep 11 2025

.TODAY...East winds 5 to 10 knots. Bay waters light chop.
.TONIGHT...Southeast winds 5 to 10 knots, becoming east after
midnight. Bay waters light chop.
.FRIDAY...Northeast winds around 5 knots, becoming southeast
around 5 knots in the afternoon. Bay waters smooth.
.FRIDAY NIGHT...South winds around 5 knots, becoming east after
midnight. Bay waters smooth.
.SATURDAY...North winds around 5 knots, becoming southeast around
5 knots in the afternoon. Bay waters smooth.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters light
chop.
.SUNDAY...Northeast winds around 5 knots, becoming east in the
afternoon. Bay waters light chop.
.SUNDAY NIGHT...East winds 5 to 10 knots. Bay waters light chop.
.MONDAY...East winds 5 to 10 knots. Bay waters light chop.
.MONDAY NIGHT...East winds 5 to 10 knots. Bay waters light chop.

$$

GMZ450-111800-
Coastal waters from Cameron LA to High Island TX out 20 NM-
1238 AM CDT Thu Sep 11 2025

.TODAY...East winds 10 to 15 knots. Seas around 2 feet. Wave
Detail: Southeast 2 feet at 4 seconds.
.TONIGHT...Southeast winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: Southeast 2 feet at 5 seconds.
.FRIDAY...East winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southeast 2 feet at 5 seconds.
.FRIDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: Southeast 1 foot at 5 seconds.
.SATURDAY...Northeast winds around 5 knots, becoming southeast in
the afternoon. Seas 1 foot or less. Wave Detail: Southeast 1 foot
at 5 seconds.
.SATURDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: South 2 feet at 4 seconds.
.SUNDAY...East winds 5 to 10 knots. Seas around 2 feet.
.SUNDAY NIGHT...Southeast winds around 10 knots. Seas around
2 feet.
.MONDAY...East winds 10 to 15 knots. Seas around 2 feet.
.MONDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet.

$$

GMZ452-111800-
Coastal waters from Intracoastal City to Cameron LA out 20 NM-
1238 AM CDT Thu Sep 11 2025

.TODAY...East winds 10 to 15 knots. Seas around 2 feet. Wave
Detail: Southeast 2 feet at 4 seconds.
.TONIGHT...Southeast winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: Southeast 2 feet at 4 seconds.
.FRIDAY...Northeast winds 5 to 10 knots, becoming east in the
afternoon. Seas around 2 feet in the morning, then 1 foot or
less. Wave Detail: Southeast 1 foot at 5 seconds.
.FRIDAY NIGHT...South winds around 5 knots. Seas 1 foot or less.
Wave Detail: Southeast 1 foot at 5 seconds.
.SATURDAY...Northeast winds around 5 knots, becoming southeast in
the afternoon. Seas 1 foot or less. Wave Detail: Northwest 1 foot
at 2 seconds and southeast 1 foot at 5 seconds.
.SATURDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: South 1 foot at 4 seconds.
.SUNDAY...East winds 5 to 10 knots. Seas around 2 feet.
.SUNDAY NIGHT...Southeast winds 10 to 15 knots. Seas around
2 feet.
.MONDAY...East winds around 10 knots. Seas around 2 feet.
.MONDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet.

$$

GMZ455-111800-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA out 20 NM-
1238 AM CDT Thu Sep 11 2025

.TODAY...East winds 10 to 15 knots, diminishing to 5 to 10 knots
this afternoon. Seas around 2 feet. Wave Detail: East 1 foot at
3 seconds.
.TONIGHT...East winds 5 to 10 knots. Seas around 2 feet in the
evening, then 1 foot or less. Wave Detail: Southeast 1 foot at
3 seconds.
.FRIDAY...Northeast winds 5 to 10 knots, becoming east in the
afternoon. Seas 1 foot or less. Wave Detail: Northeast 1 foot at
2 seconds.
.FRIDAY NIGHT...Southeast winds around 5 knots. Seas 1 foot or
less.
.SATURDAY...Northeast winds around 5 knots, becoming east in the
afternoon. Seas 1 foot or less.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 foot or
less, then around 2 feet after midnight. Wave Detail: Southeast
1 foot at 3 seconds.
.SUNDAY...East winds 5 to 10 knots. Seas 1 foot or less.
.SUNDAY NIGHT...East winds 10 to 15 knots. Seas around 2 feet.
.MONDAY...East winds 5 to 10 knots. Seas around 2 feet.
.MONDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet.

$$

GMZ470-111800-
Coastal waters from Cameron LA to High Island TX from 20 to 60 NM-
1238 AM CDT Thu Sep 11 2025

...SMALL CRAFT EXERCISE CAUTION IN EFFECT FROM 7 AM CDT THIS
MORNING THROUGH LATE TONIGHT...

.TODAY...East winds 10 to 15 knots with gusts up to 20 knots.
Seas 2 to 4 feet. Wave Detail: East 3 feet at 5 seconds. A slight
chance of showers and thunderstorms this morning.
.TONIGHT...Southeast winds 10 to 15 knots with gusts up to
20 knots, diminishing to 5 to 10 knots after midnight. Seas 2 to
4 feet. Wave Detail: Southeast 3 feet at 5 seconds.
.FRIDAY...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 2 feet at 6 seconds.
.FRIDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3 feet.
Wave Detail: Southeast 2 feet at 5 seconds.
.SATURDAY...East winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southeast 2 feet at 5 seconds.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet. Wave Detail: Southeast 2 feet at 6 seconds.
.SUNDAY...East winds around 10 knots. Seas 2 to 3 feet.
.SUNDAY NIGHT...Southeast winds 10 to 15 knots with gusts up to
20 knots. Seas 2 to 3 feet. A slight chance of showers.
.MONDAY...East winds 10 to 15 knots with gusts up to 20 knots.
Seas 3 to 4 feet. A slight chance of showers.
.MONDAY NIGHT...East winds 10 to 15 knots. Seas 3 to 4 feet. A
slight chance of showers.

Winds and seas higher in and near thunderstorms.

$$

GMZ472-111800-
Coastal waters from Intracoastal City to Cameron LA from 20 to
60 NM-
1238 AM CDT Thu Sep 11 2025

...SMALL CRAFT EXERCISE CAUTION IN EFFECT FROM 7 AM CDT THIS
MORNING THROUGH LATE TONIGHT...

.TODAY...East winds 10 to 15 knots with gusts up to 20 knots.
Seas 2 to 4 feet. Wave Detail: East 3 feet at 5 seconds. A slight
chance of showers and thunderstorms this morning.
.TONIGHT...Southeast winds 10 to 15 knots, becoming east 5 to
10 knots after midnight. Seas 2 to 4 feet. Wave Detail: Southeast
2 feet at 5 seconds.
.FRIDAY...Northeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 2 feet at 5 seconds.
.FRIDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet. Wave Detail: Southeast 2 feet at 5 seconds.
.SATURDAY...East winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southeast 2 feet at 5 seconds.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet. Wave Detail: Southeast 2 feet at 6 seconds.
.SUNDAY...East winds 10 to 15 knots. Seas 2 to 3 feet.
.SUNDAY NIGHT...East winds 10 to 15 knots with gusts up to
20 knots. Seas 2 to 4 feet. A slight chance of showers.
.MONDAY...East winds 10 to 15 knots. Seas 3 to 4 feet. A slight
chance of showers.
.MONDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet. A
slight chance of showers.

Winds and seas higher in and near thunderstorms.

$$

GMZ475-111800-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA from 20 to 60 NM-
1238 AM CDT Thu Sep 11 2025

...SMALL CRAFT EXERCISE CAUTION IN EFFECT FROM 7 AM CDT THIS
MORNING THROUGH LATE TONIGHT...

.TODAY...East winds 15 to 20 knots. Seas 2 to 4 feet. Wave
Detail: East 4 feet at 5 seconds. A slight chance of showers and
thunderstorms this morning.
.TONIGHT...East winds 10 to 15 knots. Seas 2 to 4 feet. Wave
Detail: East 3 feet at 5 seconds.
.FRIDAY...Northeast winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: East 3 feet at 6 seconds.
.FRIDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: East 2 feet at 5 seconds.
.SATURDAY...Northeast winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: East 2 feet at 5 seconds.
.SATURDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet.
Wave Detail: Southeast 2 feet at 5 seconds.
.SUNDAY...East winds 10 to 15 knots. Seas 2 to 3 feet. A slight
chance of showers late.
.SUNDAY NIGHT...East winds 15 to 20 knots, diminishing to 10 to
15 knots after midnight. Seas 2 to 4 feet. A slight chance of
showers.
.MONDAY...East winds 10 to 15 knots. Seas 2 to 4 feet. A slight
chance of showers.
.MONDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 4 feet. A
slight chance of showers.

Winds and seas higher in and near thunderstorms.

$$