Coastal Waters Forecast
Issued by NWS Lake Charles, LA

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FZUS54 KLCH 200143
CWFLCH

Coastal Waters Forecast
National Weather Service Lake Charles LA
843 PM CDT Sat Apr 19 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.

GMZ400-201415-
843 PM CDT Sat Apr 19 2025

.SYNOPSIS...
A tight gradient between high pressure to the east and low
pressure over the Plains is bringing about a prolonged period of
long fetch across the northern Gulf. This modest southerly flow
will continue to result in elevated seas into early Monday. The
next chance of rainfall comes Sunday when a frontal boundary nears
the region, with scattered showers and thunderstorms expected
Sunday through Monday.

$$

GMZ430-201415-
Sabine Lake-
843 PM CDT Sat Apr 19 2025

...SMALL CRAFT EXERCISE CAUTION IN EFFECT THROUGH SUNDAY
MORNING...

.REST OF TONIGHT...Southeast winds 15 to 20 knots. Lake waters
rough.
.SUNDAY...South winds 15 to 20 knots with gusts up to 25 knots.
Lake waters rough. A chance of showers. A slight chance of
thunderstorms in the morning, then a chance of thunderstorms in
the afternoon.
.SUNDAY NIGHT...South winds 10 to 15 knots with gusts up to
20 knots, diminishing to 5 to 10 knots after midnight. Lake
waters choppy. A slight chance of thunderstorms. A slight chance
of showers in the evening, then a chance of showers after
midnight.
.MONDAY...South winds 5 to 10 knots. Lake waters light chop. A
slight chance of thunderstorms. Showers likely, mainly in the
morning.
.MONDAY NIGHT...Southeast winds 5 to 10 knots. Lake waters light
chop.
.TUESDAY...Southeast winds 5 to 10 knots. Lake waters light chop.
A chance of showers with a slight chance of thunderstorms in the
morning, then showers likely with a chance of thunderstorms in
the afternoon.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Lake waters light
chop. A slight chance of showers and thunderstorms after
midnight.
.WEDNESDAY...Southeast winds 5 to 10 knots. Lake waters light
chop. A chance of thunderstorms. A chance of showers in the
morning, then showers likely in the afternoon.
.WEDNESDAY NIGHT...Southeast winds around 10 knots. Lake waters
light chop.
.THURSDAY...Southeast winds 10 to 15 knots. Lake waters choppy. A
chance of showers. A slight chance of thunderstorms in the
morning, then a chance of thunderstorms in the afternoon.
.THURSDAY NIGHT...Southeast winds 10 to 15 knots. Lake waters
choppy. A slight chance of showers and thunderstorms after
midnight.

Winds and waves higher in and near thunderstorms.

$$

GMZ432-201415-
Calcasieu Lake-
843 PM CDT Sat Apr 19 2025

...SMALL CRAFT EXERCISE CAUTION IN EFFECT THROUGH SUNDAY
MORNING...

.REST OF TONIGHT...Southeast winds 15 to 20 knots with gusts up
to 25 knots. Lake waters rough.
.SUNDAY...South winds 15 to 20 knots with gusts up to 25 knots.
Lake waters rough. A slight chance of showers and thunderstorms
in the afternoon.
.SUNDAY NIGHT...South winds 10 to 15 knots. Gusts up to 25 knots
in the evening. Lake waters choppy. A chance of showers with a
slight chance of thunderstorms after midnight.
.MONDAY...South winds 5 to 10 knots. Lake waters light chop. A
chance of showers with a slight chance of thunderstorms.
.MONDAY NIGHT...Southeast winds 5 to 10 knots. Lake waters light
chop.
.TUESDAY...South winds 5 to 10 knots. Lake waters light chop. A
chance of showers. A slight chance of thunderstorms in the
morning, then a chance of thunderstorms in the afternoon.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Lake waters light
chop.
.WEDNESDAY...Southeast winds 5 to 10 knots. Lake waters light
chop. A chance of showers and thunderstorms.
.WEDNESDAY NIGHT...Southeast winds 10 to 15 knots. Lake waters
choppy.
.THURSDAY...Southeast winds 10 to 15 knots. Lake waters choppy. A
chance of showers. A slight chance of thunderstorms in the
morning, then a chance of thunderstorms in the afternoon.
.THURSDAY NIGHT...Southeast winds 10 to 15 knots. Lake waters
choppy.

Winds and waves higher in and near thunderstorms.

$$

GMZ435-201415-
Vermilion and West Cote Blanche Bays-
843 PM CDT Sat Apr 19 2025

...SMALL CRAFT EXERCISE CAUTION IN EFFECT THROUGH SUNDAY
MORNING...

.REST OF TONIGHT...Southeast winds around 15 knots with gusts up
to 20 knots. Bay waters choppy.
.SUNDAY...Southeast winds 15 to 20 knots. Bay waters rough.
.SUNDAY NIGHT...Southeast winds 10 to 15 knots. Bay waters
choppy.
.MONDAY...South winds 5 to 10 knots. Bay waters light chop. A
chance of showers with a slight chance of thunderstorms.
.MONDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters light
chop. A slight chance of showers and thunderstorms after
midnight.
.TUESDAY...Southeast winds 5 to 10 knots. Bay waters light chop.
A chance of thunderstorms. A chance of showers in the morning,
then showers likely in the afternoon.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters light
chop.
.WEDNESDAY...Southeast winds 5 to 10 knots. Bay waters light
chop. A slight chance of thunderstorms. A slight chance of
showers in the morning, then a chance of showers in the
afternoon.
.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. A slight chance of
showers and thunderstorms.
.THURSDAY NIGHT...Southeast winds around 10 knots. Bay waters
light chop.

Winds and waves higher in and near thunderstorms.

$$

GMZ436-201415-
Atchafalaya and East Cote Blanche Bays-
843 PM CDT Sat Apr 19 2025

...SMALL CRAFT EXERCISE CAUTION IN EFFECT THROUGH SUNDAY
MORNING...

.REST OF TONIGHT...Southeast winds 10 to 15 knots. Bay waters
choppy.
.SUNDAY...Southeast winds 10 to 15 knots with gusts up to
20 knots. Bay waters choppy.
.SUNDAY NIGHT...Southeast winds 10 to 15 knots, diminishing to
5 to 10 knots after midnight. Bay waters choppy. A slight chance
of showers and thunderstorms after midnight.
.MONDAY...South winds 5 to 10 knots. Bay waters light chop. A
chance of showers with a slight chance of thunderstorms.
.MONDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters light
chop. A slight chance of showers and thunderstorms after
midnight.
.TUESDAY...Southeast winds 5 to 10 knots. Bay waters light chop.
A chance of showers and thunderstorms.
.TUESDAY NIGHT...Southeast winds around 5 knots. Bay waters
smooth.
.WEDNESDAY...Southeast winds 5 to 10 knots. Bay waters light
chop. A slight chance of thunderstorms. A slight chance of
showers in the morning, then a chance of showers in the
afternoon.
.WEDNESDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters
light chop.
.THURSDAY...Southeast winds 5 to 10 knots. Bay waters light chop.
A slight chance of showers and thunderstorms.
.THURSDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters light
chop.

Winds and waves higher in and near thunderstorms.

$$

GMZ450-201415-
Coastal waters from Cameron LA to High Island TX out 20 NM-
843 PM CDT Sat Apr 19 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY MORNING...

.REST OF TONIGHT...Southeast winds 15 to 20 knots with gusts up
to 25 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave
Detail: Southeast 5 feet at 5 seconds and south 2 feet at
8 seconds.
.SUNDAY...Southeast winds 15 to 20 knots with gusts up to
25 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail:
Southeast 5 feet at 5 seconds. A slight chance of showers and
thunderstorms.
.SUNDAY NIGHT...South winds 10 to 15 knots. Seas 3 to 4 feet.
Wave Detail: Southeast 3 feet at 5 seconds and southeast 2 feet
at 8 seconds. A slight chance of thunderstorms. A slight chance
of showers in the evening, then a chance of showers after
midnight.
.MONDAY...South winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: South 2 feet at 8 seconds. A chance of showers with a
slight chance of thunderstorms.
.MONDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3 feet.
A slight chance of showers and thunderstorms after midnight.
.TUESDAY...Southeast winds around 10 knots. Seas 2 to 3 feet.
Wave Detail: Southeast 2 feet at 7 seconds. A chance of showers
with a slight chance of thunderstorms.
.TUESDAY NIGHT...Southeast winds around 10 knots. Seas 2 to
3 feet. A slight chance of showers and thunderstorms after
midnight.
.WEDNESDAY...Southeast winds 10 to 15 knots. Seas 2 to 3 feet. A
chance of showers and thunderstorms.
.WEDNESDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to
3 feet.
.THURSDAY...Southeast winds 10 to 15 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.
.THURSDAY NIGHT...Southeast winds around 15 knots. Seas 3 to
4 feet. A slight chance of showers and thunderstorms after
midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ452-201415-
Coastal waters from Intracoastal City to Cameron LA out 20 NM-
843 PM CDT Sat Apr 19 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY MORNING...

.REST OF TONIGHT...Southeast winds 15 to 20 knots with gusts up
to 25 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave
Detail: Southeast 4 feet at 4 seconds and south 2 feet at
7 seconds.
.SUNDAY...Southeast winds 15 to 20 knots with gusts up to
25 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail:
South 5 feet at 5 seconds.
.SUNDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to 4 feet.
Wave Detail: Southeast 3 feet at 4 seconds. A slight chance of
showers and thunderstorms after midnight.
.MONDAY...Southeast winds around 10 knots. Seas 2 to 3 feet. A
chance of showers with a slight chance of thunderstorms.
.MONDAY NIGHT...Southeast winds around 10 knots. Seas 2 to
3 feet. A slight chance of showers and thunderstorms after
midnight.
.TUESDAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: South 2 feet at 7 seconds. A chance of showers. A slight
chance of thunderstorms in the morning, then a chance of
thunderstorms in the afternoon.
.TUESDAY NIGHT...Southeast winds around 10 knots. Seas 2 to
3 feet.
.WEDNESDAY...Southeast winds 10 to 15 knots. Seas 2 to 3 feet. A
chance of showers with a slight chance of thunderstorms.
.WEDNESDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to
3 feet.
.THURSDAY...Southeast winds 10 to 15 knots. Seas 2 to 3 feet. A
slight chance of showers and thunderstorms.
.THURSDAY NIGHT...Southeast winds around 15 knots. Seas 3 to
4 feet.

Winds and seas higher in and near thunderstorms.

$$

GMZ455-201415-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA out 20 NM-
843 PM CDT Sat Apr 19 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY MORNING...

.REST OF TONIGHT...Southeast winds 15 to 20 knots. Seas 2 to
4 feet. Wave Detail: Southeast 2 feet at 3 seconds.
.SUNDAY...Southeast winds 15 to 20 knots. Seas 2 to 4 feet. Wave
Detail: Southeast 2 feet at 3 seconds.
.SUNDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to 3 feet.
A slight chance of showers and thunderstorms after midnight.
.MONDAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. A
chance of showers with a slight chance of thunderstorms.
.MONDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet. A slight chance of showers and thunderstorms after
midnight.
.TUESDAY...Southeast winds 5 to 10 knots. Seas around 2 feet. A
chance of showers. A chance of thunderstorms, mainly in the
morning.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet.
.WEDNESDAY...Southeast winds 5 to 10 knots. Seas around 2 feet. A
slight chance of thunderstorms. A slight chance of showers in the
morning, then a chance of showers in the afternoon.
.WEDNESDAY NIGHT...Southeast winds around 10 knots. Seas around
2 feet.
.THURSDAY...Southeast winds 10 to 15 knots. Seas 2 to 3 feet. A
slight chance of showers and thunderstorms.
.THURSDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to
3 feet.

Winds and seas higher in and near thunderstorms.

$$

GMZ470-201415-
Coastal waters from Cameron LA to High Island TX from 20 to 60 NM-
843 PM CDT Sat Apr 19 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY AFTERNOON...

.REST OF TONIGHT...Southeast winds 15 to 20 knots with gusts up
to 25 knots. Seas 5 to 6 feet, occasionally to 8 feet. Wave
Detail: Southeast 6 feet at 8 seconds.
.SUNDAY...Southeast winds 15 to 20 knots with gusts up to
25 knots. Seas 5 to 6 feet, occasionally to 8 feet. Wave Detail:
Southeast 6 feet at 7 seconds.
.SUNDAY NIGHT...Southeast winds 10 to 15 knots. Seas 4 to 6 feet,
occasionally to 8 feet. Wave Detail: Southeast 5 feet at
8 seconds. A slight chance of showers and thunderstorms after
midnight.
.MONDAY...Southeast winds 5 to 10 knots. Seas 3 to 5 feet,
occasionally to 6 feet. Wave Detail: Southeast 4 feet at
8 seconds. A chance of showers with a slight chance of
thunderstorms.
.MONDAY NIGHT...Southeast winds 5 to 10 knots. Seas 3 to 4 feet.
Wave Detail: Southeast 3 feet at 8 seconds. A slight chance of
showers and thunderstorms after midnight.
.TUESDAY...Southeast winds around 10 knots. Seas 3 to 4 feet.
Wave Detail: Southeast 3 feet at 8 seconds. A chance of showers
with a slight chance of thunderstorms.
.TUESDAY NIGHT...Southeast winds around 10 knots. Seas 3 to
4 feet. A slight chance of showers and thunderstorms after
midnight.
.WEDNESDAY...Southeast winds around 10 knots. Seas 3 to 4 feet. A
chance of showers with a slight chance of thunderstorms.
.WEDNESDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to
4 feet.
.THURSDAY...Southeast winds around 10 knots, increasing to around
15 knots in the afternoon. Seas 3 to 4 feet. A slight chance of
showers and thunderstorms.
.THURSDAY NIGHT...Southeast winds 10 to 15 knots. Seas 4 to
5 feet, occasionally to 6 feet.

Winds and seas higher in and near thunderstorms.

$$

GMZ472-201415-
Coastal waters from Intracoastal City to Cameron LA from 20 to
60 NM-
843 PM CDT Sat Apr 19 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY AFTERNOON...

.REST OF TONIGHT...Southeast winds 15 to 20 knots. Seas 5 to
6 feet, occasionally to 8 feet. Wave Detail: Southeast 6 feet at
7 seconds.
.SUNDAY...Southeast winds 15 to 20 knots with gusts up to
25 knots. Seas 5 to 6 feet, occasionally to 8 feet. Wave Detail:
Southeast 6 feet at 7 seconds.
.SUNDAY NIGHT...Southeast winds 10 to 15 knots. Seas 4 to 6 feet,
occasionally to 8 feet. Wave Detail: Southeast 5 feet at
8 seconds. A slight chance of showers and thunderstorms after
midnight.
.MONDAY...Southeast winds around 10 knots. Seas 4 to 5 feet,
occasionally to 6 feet. Wave Detail: Southeast 4 feet at
8 seconds. A chance of showers with a slight chance of
thunderstorms.
.MONDAY NIGHT...Southeast winds around 10 knots. Seas 3 to
4 feet. Wave Detail: Southeast 3 feet at 8 seconds. A slight
chance of showers and thunderstorms after midnight.
.TUESDAY...Southeast winds around 10 knots. Seas 3 to 4 feet.
Wave Detail: Southeast 3 feet at 7 seconds. A chance of showers
with a slight chance of thunderstorms.
.TUESDAY NIGHT...Southeast winds around 10 knots. Seas 3 to
4 feet.
.WEDNESDAY...Southeast winds 10 to 15 knots. Seas 3 to 4 feet. A
chance of showers with a slight chance of thunderstorms.
.WEDNESDAY NIGHT...Southeast winds around 10 knots. Seas 3 to
4 feet.
.THURSDAY...Southeast winds 10 to 15 knots. Seas 3 to 4 feet. A
slight chance of showers and thunderstorms.
.THURSDAY NIGHT...Southeast winds 10 to 15 knots. Seas 4 to
5 feet, occasionally to 6 feet.

Winds and seas higher in and near thunderstorms.

$$

GMZ475-201415-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA from 20 to 60 NM-
843 PM CDT Sat Apr 19 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY AFTERNOON...

.REST OF TONIGHT...Southeast winds 15 to 20 knots. Seas 5 to
6 feet, occasionally to 8 feet. Wave Detail: Southeast 6 feet at
7 seconds.
.SUNDAY...Southeast winds 15 to 20 knots with gusts up to
25 knots. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail:
Southeast 7 feet at 7 seconds.
.SUNDAY NIGHT...Southeast winds 10 to 15 knots. Seas 4 to 6 feet,
occasionally to 8 feet. Wave Detail: Southeast 5 feet at
8 seconds. A slight chance of showers and thunderstorms after
midnight.
.MONDAY...Southeast winds around 10 knots. Seas 4 to 5 feet,
occasionally to 6 feet. Wave Detail: Southeast 4 feet at
8 seconds. A chance of showers with a slight chance of
thunderstorms.
.MONDAY NIGHT...Southeast winds 5 to 10 knots. Seas 3 to 5 feet,
occasionally to 6 feet. Wave Detail: Southeast 3 feet at
8 seconds. A slight chance of showers and thunderstorms after
midnight.
.TUESDAY...Southeast winds around 10 knots. Seas 3 to 4 feet.
Wave Detail: Southeast 3 feet at 7 seconds. A chance of showers
and thunderstorms, mainly in the morning.
.TUESDAY NIGHT...Southeast winds around 10 knots. Seas 3 to
4 feet.
.WEDNESDAY...Southeast winds around 10 knots. Seas 3 to 4 feet. A
slight chance of thunderstorms. A slight chance of showers in the
morning, then a chance of showers in the afternoon.
.WEDNESDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to
4 feet.
.THURSDAY...Southeast winds 10 to 15 knots. Seas 3 to 4 feet. A
slight chance of showers and thunderstorms in the morning.
.THURSDAY NIGHT...Southeast winds 10 to 15 knots. Seas 4 to
5 feet, occasionally to 6 feet.

Winds and seas higher in and near thunderstorms.

$$