National Weather Service Weather Forecast Office

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

000
FZUS54 KLCH 180907
CWFLCH

Coastal Waters Forecast
National Weather Service Lake Charles LA
407 AM CDT Thu Apr 18 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.

GMZ400-182215-
407 AM CDT Thu Apr 18 2024

.SYNOPSIS...
High pressure will continue off to the east with lower pressure
across the southern Plains through the end of the week. This will
keep a light to modest southerly flow in place. Shower activity
will increase over the weekend as a surface front moves into the
region. This front will move across the coastal waters late
Saturday night into Sunday morning, with modest offshore winds
developing behind it.

$$

GMZ430-182215-
Sabine Lake-
407 AM CDT Thu Apr 18 2024

.TODAY...South winds 10 to 15 knots. Lake waters choppy. Patchy
fog early this morning.
.TONIGHT...South winds 10 to 15 knots with gusts up to 20 knots,
diminishing to 5 to 10 knots after midnight. Lake waters choppy.
.FRIDAY...Southeast winds around 5 knots, increasing to 10 to
15 knots in the afternoon. Lake waters choppy.
.FRIDAY NIGHT...South winds 10 to 15 knots, diminishing to 5 to
10 knots after midnight. Lake waters choppy.
.SATURDAY...Southeast winds 5 to 10 knots, increasing to 10 to
15 knots in the afternoon. Lake waters choppy. A slight chance of
showers and thunderstorms in the afternoon.
.SATURDAY NIGHT...Southeast winds 10 to 15 knots with gusts up to
20 knots, becoming east 5 to 10 knots after midnight. Lake waters
choppy. A slight chance of showers and thunderstorms in the
evening, then showers likely with a chance of thunderstorms after
midnight.
.SUNDAY...North winds 10 to 15 knots. Lake waters choppy. A
chance of showers and thunderstorms in the morning.
.SUNDAY NIGHT...Northeast winds 10 to 15 knots. Lake waters
choppy.
.MONDAY...Northeast winds around 10 knots. Lake waters light
chop.
.MONDAY NIGHT...Southeast winds 5 to 10 knots. Lake waters light
chop.

Winds and waves higher in and near thunderstorms.

$$

GMZ432-182215-
Calcasieu Lake-
407 AM CDT Thu Apr 18 2024

.TODAY...South winds 10 to 15 knots. Lake waters choppy. Patchy
fog early this morning.
.TONIGHT...South winds 10 to 15 knots with gusts up to 20 knots,
diminishing to 5 to 10 knots after midnight. Lake waters choppy.
.FRIDAY...South winds 5 to 10 knots, increasing to 10 to 15 knots
in the afternoon. Lake waters choppy.
.FRIDAY NIGHT...South winds 10 to 15 knots with gusts up to
20 knots, diminishing to 5 to 10 knots after midnight. Lake
waters choppy.
.SATURDAY...Southeast winds 5 to 10 knots, increasing to 10 to
15 knots with gusts up to 20 knots in the afternoon. Lake waters
choppy. A slight chance of showers and thunderstorms in the
afternoon.
.SATURDAY NIGHT...Southeast winds 10 to 15 knots with gusts up to
20 knots, becoming east 5 to 10 knots after midnight. Lake waters
choppy. Showers likely with a chance of thunderstorms after
midnight.
.SUNDAY...North winds 10 to 15 knots. Lake waters choppy. A
chance of showers and thunderstorms in the morning.
.SUNDAY NIGHT...Northeast winds 10 to 15 knots. Lake waters
choppy.
.MONDAY...Northeast winds around 10 knots. Lake waters light
chop.
.MONDAY NIGHT...Southeast winds 5 to 10 knots. Lake waters light
chop.

Winds and waves higher in and near thunderstorms.

$$

GMZ435-182215-
Vermilion and West Cote Blanche Bays-
407 AM CDT Thu Apr 18 2024

.TODAY...Southeast winds 5 to 10 knots. Bay waters light chop.
Patchy fog early this morning.
.TONIGHT...South winds 5 to 10 knots, diminishing to around
5 knots after midnight. Bay waters light chop.
.FRIDAY...South winds around 5 knots, increasing to 5 to 10 knots
in the afternoon. Bay waters light chop.
.FRIDAY NIGHT...South winds 5 to 10 knots. Bay waters light chop.
.SATURDAY...Southeast winds around 5 knots, becoming south in the
afternoon. Bay waters light chop. A slight chance of showers in
the afternoon.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters light
chop. A chance of showers and thunderstorms after midnight.
.SUNDAY...West winds 5 to 10 knots, becoming north in the
afternoon. Bay waters light chop. Showers likely with a chance of
thunderstorms in the morning, then a slight chance of showers and
thunderstorms in the afternoon.
.SUNDAY NIGHT...North winds 10 to 15 knots. Bay waters choppy.
.MONDAY...Northeast winds 5 to 10 knots. Bay waters light chop.
.MONDAY NIGHT...East winds around 5 knots. Bay waters smooth.

Winds and waves higher in and near thunderstorms.

$$

GMZ436-182215-
Atchafalaya and East Cote Blanche Bays-
407 AM CDT Thu Apr 18 2024

.TODAY...Southeast winds 5 to 10 knots. Bay and inland waters
light chop. Patchy fog early this morning.
.TONIGHT...Southeast winds 5 to 10 knots, becoming south after
midnight. Bay and inland waters light chop.
.FRIDAY...Southeast winds around 5 knots, becoming south in the
afternoon. Bay and inland waters light chop.
.FRIDAY NIGHT...South winds around 5 knots. Bay and inland waters
smooth.
.SATURDAY...Southeast winds around 5 knots, becoming south in the
afternoon. Bay and inland waters light chop.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Bay and inland
waters light chop. A chance of showers and thunderstorms after
midnight.
.SUNDAY...Southwest winds 5 to 10 knots, becoming north in the
afternoon. Bay and inland waters light chop. A chance of
thunderstorms. Showers likely, mainly in the morning.
.SUNDAY NIGHT...North winds 10 to 15 knots. Bay and inland waters
choppy.
.MONDAY...Northeast winds around 10 knots. Bay and inland waters
light chop.
.MONDAY NIGHT...East winds around 5 knots. Bay and inland waters
smooth.

Winds and waves higher in and near thunderstorms.

$$

GMZ450-182215-
Coastal waters from Cameron LA to High Island TX out 20 NM-
407 AM CDT Thu Apr 18 2024

.TODAY...Southeast winds 10 to 15 knots. Seas 2 to 3 feet. Patchy
fog this morning.
.TONIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet.
.FRIDAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet.
.FRIDAY NIGHT...Southeast winds 10 to 15 knots. Seas around
2 feet.
.SATURDAY...Southeast winds 10 to 15 knots. Seas around 2 feet.
.SATURDAY NIGHT...East winds 10 to 15 knots. Seas around 2 feet.
A slight chance of showers in the evening, then showers likely
with a chance of thunderstorms after midnight.
.SUNDAY...North winds 10 to 15 knots. Seas 2 to 3 feet. A chance
of showers and thunderstorms in the morning.
.SUNDAY NIGHT...Northeast winds 15 to 20 knots. Seas 2 to 3 feet.
.MONDAY...East winds 10 to 15 knots. Seas 2 to 3 feet.
.MONDAY NIGHT...Southeast winds around 10 knots. Seas around
2 feet.

Winds and seas higher in and near thunderstorms.

$$

GMZ452-182215-
Coastal waters from Intracoastal City to Cameron LA out 20 NM-
407 AM CDT Thu Apr 18 2024

.TODAY...Southeast winds 10 to 15 knots. Seas 2 to 3 feet. Patchy
fog this morning.
.TONIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet.
.FRIDAY...South winds 5 to 10 knots, becoming southeast 10 to
15 knots in the afternoon. Seas around 2 feet.
.FRIDAY NIGHT...Southeast winds 10 to 15 knots, diminishing to
5 to 10 knots after midnight. Seas around 2 feet.
.SATURDAY...Southeast winds 5 to 10 knots, increasing to 10 to
15 knots in the afternoon. Seas around 2 feet.
.SATURDAY NIGHT...Southeast winds 10 to 15 knots with gusts up to
20 knots, diminishing to 5 to 10 knots after midnight. Seas
around 2 feet. Showers likely with a chance of thunderstorms
after midnight.
.SUNDAY...North winds 10 to 15 knots. Seas 2 to 3 feet. Showers
likely with a chance of thunderstorms in the morning, then a
slight chance of showers and thunderstorms in the afternoon.
.SUNDAY NIGHT...Northeast winds 15 to 20 knots. Seas 2 to 3 feet.
.MONDAY...Northeast winds 10 to 15 knots. Seas 2 to 3 feet.
.MONDAY NIGHT...Southeast winds around 10 knots. Seas around
2 feet.

Winds and seas higher in and near thunderstorms.

$$

GMZ455-182215-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA out 20 NM-
407 AM CDT Thu Apr 18 2024

.TODAY...Southeast winds 5 to 10 knots, increasing to 10 to
15 knots this afternoon. Seas around 2 feet. Patchy fog early
this morning.
.TONIGHT...South winds 5 to 10 knots. Seas around 2 feet.
.FRIDAY...South winds around 5 knots, becoming southeast in the
afternoon. Seas around 2 feet.
.FRIDAY NIGHT...Southeast winds around 5 knots. Seas around
2 feet in the evening, then 1 foot or less.
.SATURDAY...Southeast winds 5 to 10 knots. Seas 1 foot or less.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 foot or
less, then around 2 feet after midnight. A chance of showers and
thunderstorms after midnight.
.SUNDAY...Southwest winds 5 to 10 knots, becoming north 10 to
15 knots in the afternoon. Seas around 2 feet. A chance of
thunderstorms. Showers likely, mainly in the morning.
.SUNDAY NIGHT...Northeast winds around 15 knots. Seas around
2 feet.
.MONDAY...Northeast winds 10 to 15 knots, diminishing to 5 to
10 knots in the afternoon. Seas around 2 feet.
.MONDAY NIGHT...East winds 5 to 10 knots. Seas 1 foot or less,
then around 2 feet after midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ470-182215-
Coastal waters from Cameron LA to High Island TX from 20 to 60 NM-
407 AM CDT Thu Apr 18 2024

.TODAY...Southeast winds 10 to 15 knots. Seas 3 to 4 feet. Patchy
fog this morning.
.TONIGHT...South winds 10 to 15 knots. Seas 3 to 4 feet.
.FRIDAY...Southeast winds 5 to 10 knots. Seas 2 to 4 feet.
.FRIDAY NIGHT...Southeast winds around 10 knots. Seas 2 to
3 feet.
.SATURDAY...Southeast winds around 10 knots. Seas 2 to 3 feet.
.SATURDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to
3 feet. Showers likely with a chance of thunderstorms after
midnight.
.SUNDAY...North winds 10 to 15 knots. Seas 2 to 3 feet. Showers
likely with a chance of thunderstorms in the morning.
.SUNDAY NIGHT...Northeast winds 15 to 20 knots. Seas 3 to 5 feet,
occasionally to 6 feet.
.MONDAY...Northeast winds 10 to 15 knots. Seas 2 to 4 feet.
.MONDAY NIGHT...Southeast winds around 10 knots. Seas 2 to
3 feet.

Winds and seas higher in and near thunderstorms.

$$

GMZ472-182215-
Coastal waters from Intracoastal City to Cameron LA from 20 to
60 NM-
407 AM CDT Thu Apr 18 2024

.TODAY...Southeast winds 10 to 15 knots with gusts up to
20 knots. Seas 3 to 4 feet. Patchy fog this morning.
.TONIGHT...Southeast winds 10 to 15 knots, becoming south 5 to
10 knots after midnight. Seas 3 to 4 feet.
.FRIDAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet.
.FRIDAY NIGHT...Southeast winds around 10 knots. Seas 2 to
3 feet.
.SATURDAY...Southeast winds 5 to 10 knots. Seas around 2 feet.
.SATURDAY NIGHT...Southeast winds 10 to 15 knots. Seas around
2 feet. A chance of showers and thunderstorms after midnight.
.SUNDAY...Southwest winds 5 to 10 knots, becoming north 10 to
15 knots in the afternoon. Seas 2 to 3 feet. Showers likely with
a chance of thunderstorms in the morning, then a slight chance of
showers and thunderstorms in the afternoon.
.SUNDAY NIGHT...Northeast winds 15 to 20 knots. Seas 3 to 4 feet.
.MONDAY...Northeast winds 10 to 15 knots. Seas 2 to 4 feet.
.MONDAY NIGHT...East winds around 10 knots. Seas 2 to 3 feet.

Winds and seas higher in and near thunderstorms.

$$

GMZ475-182215-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA from 20 to 60 NM-
407 AM CDT Thu Apr 18 2024

.TODAY...Southeast winds 5 to 10 knots, increasing to 10 to
15 knots this afternoon. Seas 3 to 4 feet. Patchy fog this
morning.
.TONIGHT...South winds 5 to 10 knots. Seas around 3 feet.
.FRIDAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet.
.FRIDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3 feet.
.SATURDAY...Southeast winds 5 to 10 knots. Seas around 2 feet.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet. A chance of showers and thunderstorms after midnight.
.SUNDAY...South winds 5 to 10 knots, becoming northwest 10 to
15 knots in the afternoon. Seas 2 to 3 feet. A chance of
thunderstorms. Showers likely, mainly in the morning.
.SUNDAY NIGHT...Northeast winds around 15 knots. Seas 2 to
4 feet.
.MONDAY...Northeast winds 10 to 15 knots. Seas 2 to 3 feet.
.MONDAY NIGHT...East winds around 10 knots. Seas 2 to 3 feet.

Winds and seas higher in and near thunderstorms.

$$