National Weather Service Weather Forecast Office

• Home
• Site Map
• News
• Organization
• Search for: NWS All NOAA 

000
FZUS54 KLCH 200839
CWFLCH

Coastal Waters Forecast
National Weather Service Lake Charles LA
339 AM CDT Sat Apr 20 2024

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.

GMZ400-202115-
339 AM CDT Sat Apr 20 2024

.SYNOPSIS...
Light to moderate east to southeast winds can be expected today,
as a weak frontal boundary meanders slowly south over the region.
Showers and a few thunderstorms will increase tonight into
Sunday as a disturbance aloft moves into the area. The front will
move offshore by early Sunday, with strong offshore winds
developing in its wake Sunday morning and continue into early
Monday before diminishing. Onshore flow will redevelop by Tuesday
as surface high pressure moves over the eastern seaboard.

$$

GMZ430-202115-
Sabine Lake-
339 AM CDT Sat Apr 20 2024

.TODAY...East winds around 5 knots, increasing to 5 to 10 knots
late this morning and early afternoon, then becoming southeast
late. Lake waters light chop. Patchy fog early this morning. A
chance of showers with a slight chance of thunderstorms late.
.TONIGHT...East winds 5 to 10 knots, becoming northeast 10 to
15 knots with gusts up to 25 knots after midnight. Lake waters
choppy. Showers likely with a slight chance of thunderstorms.
.SUNDAY...Northeast winds 15 to 20 knots with gusts up to
30 knots. Lake waters rough. Showers likely with a slight chance
of thunderstorms in the morning.
.SUNDAY NIGHT...Northeast winds 15 to 20 knots, diminishing to
10 to 15 knots after midnight. Lake waters rough.
.MONDAY...Northeast winds 10 to 15 knots. Lake waters choppy.
.MONDAY NIGHT...East winds 5 to 10 knots. Lake waters light chop.
.TUESDAY...Southeast winds 5 to 10 knots. Lake waters light chop.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Lake waters light
chop.
.WEDNESDAY...Southeast winds 5 to 10 knots. Lake waters light
chop.
.WEDNESDAY NIGHT...Southeast winds around 10 knots. Lake waters
light chop.

Winds and waves higher in and near thunderstorms.

$$

GMZ432-202115-
Calcasieu Lake-
339 AM CDT Sat Apr 20 2024

.TODAY...East winds 5 to 10 knots, becoming southeast 10 to
15 knots late. Lake waters choppy. Patchy fog early this morning.
A slight chance of showers and thunderstorms late.
.TONIGHT...East winds 10 to 15 knots, becoming northeast 15 to
20 knots with gusts up to 25 knots after midnight. Lake waters
rough. A slight chance of thunderstorms. A chance of showers in
the evening, then showers likely after midnight.
.SUNDAY...Northeast winds 15 to 20 knots with gusts up to
30 knots. Lake waters rough. Showers likely with a slight chance
of thunderstorms in the morning.
.SUNDAY NIGHT...Northeast winds 15 to 20 knots with gusts up to
30 knots. Lake waters rough.
.MONDAY...Northeast winds 15 to 20 knots with gusts up to
25 knots, diminishing to 10 to 15 knots in the afternoon. Lake
waters rough.
.MONDAY NIGHT...East winds 5 to 10 knots. Lake waters light chop.
.TUESDAY...Southeast winds 5 to 10 knots. Lake waters light chop.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Lake waters light
chop.
.WEDNESDAY...East winds 5 to 10 knots, becoming southeast in the
afternoon. Lake waters light chop.
.WEDNESDAY NIGHT...Southeast winds 5 to 10 knots. Lake waters
light chop.

Winds and waves higher in and near thunderstorms.

$$

GMZ435-202115-
Vermilion and West Cote Blanche Bays-
339 AM CDT Sat Apr 20 2024

.TODAY...Light and variable winds, becoming east around 5 knots
late this morning, then becoming southeast this afternoon. Bay
waters light chop. Patchy fog early this morning.
.TONIGHT...Southeast winds around 5 knots, becoming north after
midnight. Bay waters light chop. A slight chance of showers in
the evening, then showers likely with a slight chance of
thunderstorms after midnight.
.SUNDAY...North winds 10 to 15 knots with gusts up to 20 knots.
Bay waters choppy. Showers likely with a slight chance of
thunderstorms in the morning, then a slight chance of showers in
the afternoon.
.SUNDAY NIGHT...Northeast winds 15 to 20 knots. Bay waters rough.
.MONDAY...Northeast winds 10 to 15 knots with gusts up to
20 knots, diminishing to 5 to 10 knots in the afternoon. Bay
waters choppy.
.MONDAY NIGHT...East winds around 5 knots. Bay waters smooth.
.TUESDAY...East winds 5 to 10 knots, becoming southeast in the
afternoon. Bay waters light chop.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters light
chop.
.WEDNESDAY...East winds 5 to 10 knots, becoming southeast in the
afternoon. Bay waters light chop.
.WEDNESDAY NIGHT...South winds 5 to 10 knots. Bay waters light
chop.

Winds and waves higher in and near thunderstorms.

$$

GMZ436-202115-
Atchafalaya and East Cote Blanche Bays-
339 AM CDT Sat Apr 20 2024

.TODAY...Light and variable winds, becoming east around 5 knots
late this morning, then becoming south this afternoon. Bay and
inland waters light chop.
.TONIGHT...Southeast winds around 5 knots, becoming north after
midnight. Bay and inland waters smooth. Showers likely with a
slight chance of thunderstorms after midnight.
.SUNDAY...North winds 10 to 15 knots. Bay and inland waters
choppy. A slight chance of thunderstorms. Showers likely, mainly
in the morning.
.SUNDAY NIGHT...Northeast winds 10 to 15 knots with gusts up to
20 knots. Bay and inland waters choppy.
.MONDAY...Northeast winds 10 to 15 knots, diminishing to 5 to
10 knots in the afternoon. Bay and inland waters choppy.
.MONDAY NIGHT...East winds around 5 knots. Bay and inland waters
smooth.
.TUESDAY...East winds 5 to 10 knots, becoming southeast in the
afternoon. Bay and inland waters light chop.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Bay and inland
waters light chop.
.WEDNESDAY...East winds 5 to 10 knots, becoming southeast in the
afternoon. Bay and inland waters light chop.
.WEDNESDAY NIGHT...Southeast winds 5 to 10 knots. Bay and inland
waters light chop.

Winds and waves higher in and near thunderstorms.

$$

GMZ450-202115-
Coastal waters from Cameron LA to High Island TX out 20 NM-
339 AM CDT Sat Apr 20 2024

.TODAY...East winds 5 to 10 knots, becoming southeast 10 to
15 knots this afternoon. Seas around 2 feet. A slight chance of
showers early this afternoon. A slight chance of showers and
thunderstorms late.
.TONIGHT...East winds 10 to 15 knots, becoming northeast with
gusts up to 20 knots after midnight. Seas 2 to 3 feet. A slight
chance of thunderstorms. A chance of showers in the evening, then
showers likely after midnight.
.SUNDAY...Northeast winds 20 to 25 knots with gusts up to
30 knots. Seas 3 to 5 feet, occasionally to 6 feet. Showers
likely with a slight chance of thunderstorms in the morning.
.SUNDAY NIGHT...Northeast winds 20 to 25 knots with gusts up to
30 knots. Seas 3 to 5 feet, occasionally to 6 feet.
.MONDAY...Northeast winds 15 to 20 knots, becoming east 10 to
15 knots in the afternoon. Seas 2 to 4 feet.
.MONDAY NIGHT...Southeast winds around 10 knots. Seas around
2 feet.
.TUESDAY...Southeast winds around 10 knots. Seas around 2 feet.
.TUESDAY NIGHT...Southeast winds around 10 knots. Seas around
2 feet.
.WEDNESDAY...Southeast winds around 10 knots. Seas around 2 feet.
.WEDNESDAY NIGHT...Southeast winds 10 to 15 knots. Seas around
2 feet.

Winds and seas higher in and near thunderstorms.

$$

GMZ452-202115-
Coastal waters from Intracoastal City to Cameron LA out 20 NM-
339 AM CDT Sat Apr 20 2024

.TODAY...Southeast winds around 5 knots, increasing to 10 to
15 knots. Seas around 2 feet.
.TONIGHT...Southeast winds 10 to 15 knots, becoming northeast
15 to 20 knots after midnight. Seas 2 to 3 feet. A slight chance
of showers in the evening, then showers likely with a slight
chance of thunderstorms after midnight.
.SUNDAY...North winds 20 to 25 knots with gusts up to 30 knots.
Seas 2 to 4 feet. Showers likely with a slight chance of
thunderstorms in the morning, then a slight chance of showers in
the afternoon.
.SUNDAY NIGHT...Northeast winds 20 to 25 knots with gusts up to
30 knots. Seas 3 to 5 feet, occasionally to 6 feet.
.MONDAY...Northeast winds 15 to 20 knots, diminishing to 10 to
15 knots in the afternoon. Seas 2 to 4 feet.
.MONDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet.
.TUESDAY...Southeast winds around 10 knots. Seas around 2 feet.
.TUESDAY NIGHT...Southeast winds around 10 knots. Seas around
2 feet.
.WEDNESDAY...Southeast winds 5 to 10 knots. Seas around 2 feet.
.WEDNESDAY NIGHT...Southeast winds 10 to 15 knots. Seas around
2 feet.

Winds and seas higher in and near thunderstorms.

$$

GMZ455-202115-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA out 20 NM-
339 AM CDT Sat Apr 20 2024

.TODAY...East winds around 5 knots, becoming southeast this
afternoon. Seas 1 foot or less, then 1 to 2 feet this afternoon.
.TONIGHT...Southeast winds 5 to 10 knots, becoming north after
midnight. Seas 1 to 2 feet in the evening, then 1 foot or less.
Showers likely with a slight chance of thunderstorms after
midnight.
.SUNDAY...North winds 15 to 20 knots. Seas 2 to 3 feet. A slight
chance of thunderstorms. Showers likely, mainly in the morning.
.SUNDAY NIGHT...Northeast winds 15 to 20 knots. Seas 2 to 3 feet.
.MONDAY...Northeast winds 15 to 20 knots, diminishing to 10 to
15 knots in the afternoon. Seas 2 to 3 feet.
.MONDAY NIGHT...East winds 5 to 10 knots. Seas 1 foot or less.
.TUESDAY...Southeast winds 5 to 10 knots. Seas 1 foot or less.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 foot or
less.
.WEDNESDAY...Southeast winds 5 to 10 knots. Seas 1 foot or less.
.WEDNESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 foot or
less.

Winds and seas higher in and near thunderstorms.

$$

GMZ470-202115-
Coastal waters from Cameron LA to High Island TX from 20 to 60 NM-
339 AM CDT Sat Apr 20 2024

.TODAY...East winds 5 to 10 knots. Seas 2 to 3 feet.
.TONIGHT...East winds around 10 knots, becoming northeast with
gusts up to 20 knots after midnight. Seas 2 to 3 feet. Showers
likely with a slight chance of thunderstorms after midnight.
.SUNDAY...Northeast winds 20 to 25 knots with gusts up to
30 knots. Seas 4 to 6 feet, occasionally to 8 feet. Showers
likely with a slight chance of thunderstorms in the morning.
.SUNDAY NIGHT...Northeast winds 20 to 25 knots with gusts up to
30 knots. Seas 5 to 7 feet, occasionally to 9 feet.
.MONDAY...Northeast winds 20 to 25 knots, diminishing to 10 to
15 knots in the afternoon. Seas 4 to 6 feet, occasionally to
8 feet.
.MONDAY NIGHT...East winds around 10 knots. Seas 2 to 3 feet.
.TUESDAY...Southeast winds around 10 knots. Seas around 2 feet.
.TUESDAY NIGHT...Southeast winds around 10 knots. Seas around
2 feet.
.WEDNESDAY...East winds around 10 knots. Seas around 2 feet.
.WEDNESDAY NIGHT...Southeast winds 10 to 15 knots. Seas around
2 feet.

Winds and seas higher in and near thunderstorms.

$$

GMZ472-202115-
Coastal waters from Intracoastal City to Cameron LA from 20 to
60 NM-
339 AM CDT Sat Apr 20 2024

.TODAY...East winds 5 to 10 knots. Seas 2 to 3 feet.
.TONIGHT...Southeast winds 5 to 10 knots, becoming northeast
10 to 15 knots after midnight. Seas 2 to 3 feet. Showers likely
with a slight chance of thunderstorms after midnight.
.SUNDAY...Northeast winds 20 to 25 knots with gusts up to
30 knots. Seas 4 to 6 feet, occasionally to 8 feet. Showers
likely with a slight chance of thunderstorms in the morning, then
a slight chance of showers in the afternoon.
.SUNDAY NIGHT...Northeast winds 20 to 25 knots with gusts up to
30 knots. Seas 5 to 6 feet, occasionally to 8 feet.
.MONDAY...Northeast winds 20 to 25 knots, diminishing to 10 to
15 knots in the afternoon. Seas 4 to 6 feet, occasionally to
8 feet.
.MONDAY NIGHT...East winds around 10 knots. Seas 2 to 3 feet.
.TUESDAY...Southeast winds around 10 knots. Seas around 2 feet.
.TUESDAY NIGHT...Southeast winds around 10 knots. Seas around
2 feet.
.WEDNESDAY...East winds around 10 knots. Seas around 2 feet.
.WEDNESDAY NIGHT...Southeast winds 10 to 15 knots. Seas around
2 feet.

Winds and seas higher in and near thunderstorms.

$$

GMZ475-202115-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA from 20 to 60 NM-
339 AM CDT Sat Apr 20 2024

.TODAY...East winds 5 to 10 knots. Seas around 2 feet.
.TONIGHT...East winds 5 to 10 knots. Seas around 2 feet. A chance
of showers with a slight chance of thunderstorms after midnight.
.SUNDAY...North winds 15 to 20 knots. Seas 2 to 4 feet. A slight
chance of thunderstorms. Showers, mainly in the morning.
.SUNDAY NIGHT...Northeast winds 20 to 25 knots. Seas 4 to 6 feet,
occasionally to 8 feet.
.MONDAY...Northeast winds 15 to 20 knots, diminishing to 10 to
15 knots in the afternoon. Seas 3 to 5 feet, occasionally to
6 feet.
.MONDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet.
.TUESDAY...East winds around 10 knots. Seas around 2 feet.
.TUESDAY NIGHT...Southeast winds around 10 knots. Seas around
2 feet.
.WEDNESDAY...East winds around 10 knots. Seas around 2 feet.
.WEDNESDAY NIGHT...Southeast winds around 10 knots. Seas around
2 feet.

Winds and seas higher in and near thunderstorms.

$$