000
FZUS54 KLCH 132009
CWFLCH

Coastal Waters Forecast
National Weather Service Lake Charles LA
309 PM CDT Sun Sep 13 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.

GMZ400-140900-
309 PM CDT Sun Sep 13 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...

High pressure ridging over the region will keep conditions mostly
dry with mild onshore winds. Scattered nocturnal showers and
storms will be possible each evening through the week.

Winds and seas will start to see an increasing fetch towards the
middle to end of the week as an upper disturbance moves into the
northeast Gulf. Small craft advisories may be needed as early as
Wednesday night.

$$

GMZ430-140900-
Sabine Lake-
309 PM CDT Sun Sep 13 2026

.TONIGHT...South winds around 5 knots. Lake waters smooth.
.MONDAY...Southeast winds around 5 knots, becoming south in the
afternoon. Lake waters light chop. A slight chance of showers and
thunderstorms.
.MONDAY NIGHT...South winds around 5 knots. Lake waters smooth.
.TUESDAY...Southeast winds around 5 knots, increasing to 5 to
10 knots in the afternoon. Lake waters light chop.
.TUESDAY NIGHT...Southeast winds around 5 knots. Lake waters
smooth.
.WEDNESDAY...East winds 5 to 10 knots. Lake waters light chop. A
slight chance of showers and thunderstorms.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Lake waters light
chop. A slight chance of thunderstorms in the evening. A slight
chance of showers.
.THURSDAY...East winds 5 to 10 knots. Lake waters light chop.
.THURSDAY NIGHT...East winds around 5 knots. Lake waters smooth.
.FRIDAY...Northeast winds 5 to 10 knots. Lake waters light chop.
.FRIDAY NIGHT...Southeast winds around 5 knots. Lake waters
smooth.

Winds and waves higher in and near thunderstorms.

$$

GMZ432-140900-
Calcasieu Lake-
309 PM CDT Sun Sep 13 2026

.TONIGHT...South winds around 5 knots. Lake waters smooth.
.MONDAY...Southeast winds around 5 knots, becoming south in the
afternoon. Lake waters light chop. A slight chance of showers and
thunderstorms in the morning.
.MONDAY NIGHT...South winds around 5 knots. Lake waters smooth.
.TUESDAY...Southeast winds around 5 knots, increasing to 5 to
10 knots in the afternoon. Lake waters light chop.
.TUESDAY NIGHT...South winds 5 to 10 knots, becoming east after
midnight. Lake waters light chop.
.WEDNESDAY...East winds 5 to 10 knots. Lake waters light chop. A
chance of showers and thunderstorms in the afternoon.
.WEDNESDAY NIGHT...East winds 10 to 15 knots with gusts up to
20 knots. Lake waters choppy. A slight chance of thunderstorms in
the evening. A slight chance of showers.
.THURSDAY...East winds around 10 knots. Lake waters light chop.
.THURSDAY NIGHT...East winds 5 to 10 knots. Lake waters light
chop.
.FRIDAY...Northeast winds 5 to 10 knots. Lake waters light chop.
.FRIDAY NIGHT...East winds around 5 knots. Lake waters smooth.

Winds and waves higher in and near thunderstorms.

$$

GMZ435-140900-
Vermilion and West Cote Blanche Bays-
309 PM CDT Sun Sep 13 2026

.TONIGHT...Southwest winds around 5 knots. Bay waters smooth.
.MONDAY...North winds around 5 knots, becoming south in the
afternoon. Bay waters smooth. A slight chance of showers and
thunderstorms in the afternoon.
.MONDAY NIGHT...South winds around 5 knots. Bay waters smooth.
.TUESDAY...Northeast winds around 5 knots, becoming southeast in
the afternoon. Bay waters smooth. A slight chance of showers and
thunderstorms in the afternoon.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters light
chop.
.WEDNESDAY...East winds 10 to 15 knots. Bay waters choppy. A
slight chance of showers and thunderstorms in the morning, then
showers likely with a chance of thunderstorms in the afternoon.
.WEDNESDAY NIGHT...East winds 15 to 20 knots, diminishing to
10 to 15 knots after midnight. Bay waters rough. A slight chance
of showers and thunderstorms in the evening.
.THURSDAY...East winds 10 to 15 knots. Bay waters choppy.
.THURSDAY NIGHT...East winds 10 to 15 knots, diminishing to 5 to
10 knots after midnight. Bay waters choppy.
.FRIDAY...Northeast winds 5 to 10 knots. Bay waters light chop.
.FRIDAY NIGHT...East winds 5 to 10 knots. Bay waters light chop.

Winds and waves higher in and near thunderstorms.

$$

GMZ436-140900-
Atchafalaya and East Cote Blanche Bays-
309 PM CDT Sun Sep 13 2026

.TONIGHT...Southwest winds around 5 knots. Bay waters smooth.
.MONDAY...North winds around 5 knots, becoming southwest in the
afternoon. Bay waters smooth. A slight chance of showers and
thunderstorms in the afternoon.
.MONDAY NIGHT...South winds around 5 knots. Bay waters smooth.
.TUESDAY...Northeast winds around 5 knots, becoming southeast in
the afternoon. Bay waters smooth. A chance of showers and
thunderstorms in the afternoon.
.TUESDAY NIGHT...East winds 5 to 10 knots. Bay waters light chop.
.WEDNESDAY...East winds 10 to 15 knots. Bay waters choppy. A
chance of showers with a slight chance of thunderstorms in the
morning, then showers likely with a chance of thunderstorms in
the afternoon.
.WEDNESDAY NIGHT...East winds 10 to 15 knots with gusts up to
20 knots. Bay waters choppy. A slight chance of showers and
thunderstorms in the evening.
.THURSDAY...East winds 10 to 15 knots. Bay waters choppy.
.THURSDAY NIGHT...East winds 10 to 15 knots, diminishing to 5 to
10 knots after midnight. Bay waters choppy.
.FRIDAY...Northeast winds 5 to 10 knots. Bay waters light chop. A
slight chance of showers and thunderstorms in the afternoon.
.FRIDAY NIGHT...East winds around 5 knots. Bay waters smooth.

Winds and waves higher in and near thunderstorms.

$$

GMZ450-140900-
Coastal waters from Cameron LA to High Island TX out 20 NM-
309 PM CDT Sun Sep 13 2026

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

Winds and seas higher in and near thunderstorms.

$$

GMZ452-140900-
Coastal waters from Intracoastal City to Cameron LA out 20 NM-
309 PM CDT Sun Sep 13 2026

.TONIGHT...South winds 5 to 10 knots. Seas 1 foot or less, then
around 2 feet after midnight. Wave Detail: Southwest 1 foot at
5 seconds, becoming south 1 foot at 5 seconds.
.MONDAY...South winds around 5 knots. Seas 1 foot or less. Wave
Detail: South 1 foot at 5 seconds.
.MONDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: South 2 feet at 6 seconds.
.TUESDAY...Southeast winds around 5 knots. Seas 1 foot or less.
Wave Detail: South 1 foot at 5 seconds.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet. Wave Detail: Southeast 1 foot at 4 seconds. A slight
chance of showers and thunderstorms after midnight.
.WEDNESDAY...East winds 10 to 15 knots, increasing to 15 to
20 knots in the afternoon. Seas 2 to 3 feet. Wave Detail: East
3 feet at 4 seconds. A chance of showers. A slight chance of
thunderstorms in the morning, then a chance of thunderstorms in
the afternoon.
.WEDNESDAY NIGHT...East winds 20 to 25 knots, diminishing to
15 to 20 knots after midnight. Seas 3 to 5 feet, occasionally to
6 feet. A slight chance of thunderstorms. A chance of showers,
mainly in the evening.
.THURSDAY...East winds 15 to 20 knots, diminishing to 10 to
15 knots in the afternoon. Seas 2 to 4 feet.
.THURSDAY NIGHT...East winds 15 to 20 knots, diminishing to 10 to
15 knots after midnight. Seas 2 to 4 feet.
.FRIDAY...Northeast winds 10 to 15 knots, becoming east 5 to
10 knots in the afternoon. Seas 2 to 3 feet.
.FRIDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet.

Winds and seas higher in and near thunderstorms.

$$

GMZ455-140900-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA out 20 NM-
309 PM CDT Sun Sep 13 2026

.TONIGHT...Southwest winds around 5 knots. Seas 1 foot or less.
Wave Detail: Southwest 1 foot at 4 seconds.
.MONDAY...North winds around 5 knots, becoming south in the
afternoon. Seas 1 foot or less. Wave Detail: South 1 foot at
5 seconds.
.MONDAY NIGHT...South winds around 5 knots. Seas 1 foot or less.
Wave Detail: South 1 foot at 5 seconds.
.TUESDAY...East winds around 5 knots. Seas 1 foot or less. Wave
Detail: South 1 foot at 4 seconds. A slight chance of showers and
thunderstorms in the afternoon.
.TUESDAY NIGHT...East winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: Southeast 1 foot at 3 seconds. A chance of showers
with a slight chance of thunderstorms after midnight.
.WEDNESDAY...East winds 10 to 15 knots, increasing to 15 to
20 knots in the afternoon. Seas 2 to 3 feet. Wave Detail: East
2 feet at 3 seconds. Showers likely. A slight chance of
thunderstorms in the morning, then a chance of thunderstorms in
the afternoon.
.WEDNESDAY NIGHT...East winds 15 to 20 knots with gusts up to
25 knots. Seas 2 to 4 feet. A slight chance of showers and
thunderstorms in the evening.
.THURSDAY...East winds 15 to 20 knots, diminishing to 10 to
15 knots in the afternoon. Seas 2 to 3 feet.
.THURSDAY NIGHT...East winds 15 to 20 knots, diminishing to 10 to
15 knots after midnight. Seas 2 to 3 feet.
.FRIDAY...Northeast winds 10 to 15 knots. Seas 1 to 2 feet. A
slight chance of showers in the afternoon.
.FRIDAY NIGHT...East winds 5 to 10 knots. Seas 1 to 2 feet. A
slight chance of showers. A slight chance of thunderstorms after
midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ470-140900-
Coastal waters from Cameron LA to High Island TX from 20 to 60 NM-
309 PM CDT Sun Sep 13 2026

.TONIGHT...South winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: South 2 feet at 5 seconds.
.MONDAY...Southeast winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: South 2 feet at 6 seconds. A slight chance of showers and
thunderstorms in the morning.
.MONDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: South 2 feet at 6 seconds.
.TUESDAY...Southeast winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: South 2 feet at 6 seconds.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet. Wave Detail: Southeast 2 feet at 6 seconds.
.WEDNESDAY...East winds 10 to 15 knots with gusts up to 20 knots.
Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 5 seconds. A
chance of showers. A slight chance of thunderstorms in the
morning, then a chance of thunderstorms in the afternoon.
.WEDNESDAY NIGHT...East winds 15 to 20 knots with gusts up to
25 knots. Seas 4 to 6 feet, occasionally to 8 feet. A chance of
showers with a slight chance of thunderstorms.
.THURSDAY...East winds 15 to 20 knots. Seas 4 to 6 feet,
occasionally to 8 feet. A slight chance of showers and
thunderstorms.
.THURSDAY NIGHT...East winds 10 to 15 knots. Seas 3 to 5 feet,
occasionally to 6 feet.
.FRIDAY...Northeast winds 10 to 15 knots. Seas 3 to 5 feet,
occasionally to 6 feet.
.FRIDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 4 feet.

Winds and seas higher in and near thunderstorms.

$$

GMZ472-140900-
Coastal waters from Intracoastal City to Cameron LA from 20 to
60 NM-
309 PM CDT Sun Sep 13 2026

.TONIGHT...South winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: South 2 feet at 5 seconds.
.MONDAY...Southeast winds around 5 knots. Seas around 2 feet.
Wave Detail: South 2 feet at 6 seconds. A slight chance of
showers and thunderstorms in the morning.
.MONDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: South 2 feet at 6 seconds.
.TUESDAY...Southeast winds around 5 knots, becoming east in the
afternoon. Seas around 2 feet. Wave Detail: South 2 feet at
6 seconds.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet. Wave Detail: Southeast 2 feet at 6 seconds. A slight
chance of showers after midnight.
.WEDNESDAY...East winds 10 to 15 knots, increasing to 15 to
20 knots in the afternoon. Seas 2 to 4 feet. Wave Detail:
Southeast 4 feet at 5 seconds. A chance of thunderstorms. Showers
likely, mainly in the morning.
.WEDNESDAY NIGHT...East winds 20 to 25 knots with gusts up to
30 knots. Seas 5 to 8 feet, occasionally to 10 feet. A chance of
showers with a slight chance of thunderstorms.
.THURSDAY...East winds 15 to 20 knots. Seas 5 to 7 feet,
occasionally to 9 feet. A slight chance of thunderstorms in the
morning. A slight chance of showers.
.THURSDAY NIGHT...East winds 15 to 20 knots. Seas 5 to 7 feet,
occasionally to 9 feet.
.FRIDAY...Northeast winds 10 to 15 knots. Seas 3 to 5 feet,
occasionally to 6 feet. A slight chance of showers.
.FRIDAY 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.

$$

GMZ475-140900-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA from 20 to 60 NM-
309 PM CDT Sun Sep 13 2026

.TONIGHT...South winds around 5 knots. Seas around 2 feet. Wave
Detail: South 2 feet at 5 seconds.
.MONDAY...East winds around 5 knots. Seas around 2 feet in the
morning, then 1 foot or less. Wave Detail: South 2 feet at
5 seconds, becoming south 1 foot at 6 seconds.
.MONDAY NIGHT...Southeast winds around 5 knots. Seas 1 foot or
less. Wave Detail: South 1 foot at 6 seconds.
.TUESDAY...East winds around 5 knots, increasing to 5 to 10 knots
in the afternoon. Seas 1 foot or less, then around 2 feet in the
afternoon. Wave Detail: South 1 foot at 6 seconds.
.TUESDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: Southeast 2 feet at 5 seconds. A slight chance of
showers and thunderstorms after midnight.
.WEDNESDAY...East winds 10 to 15 knots, increasing to 20 to
25 knots in the afternoon. Seas 2 to 3 feet, building to 4 to
6 feet, occasionally to 8 feet in the afternoon. Wave Detail:
East 3 feet at 4 seconds, becoming east 5 feet at 5 seconds.
Showers likely with a chance of thunderstorms.
.WEDNESDAY NIGHT...East winds 25 to 30 knots, diminishing to
20 to 25 knots after midnight. Seas 6 to 9 feet, occasionally to
11 feet. A chance of showers with a slight chance of
thunderstorms in the evening, then a slight chance of showers
after midnight.
.THURSDAY...East winds 20 to 25 knots. Seas 5 to 8 feet,
occasionally to 10 feet. A slight chance of showers.
.THURSDAY NIGHT...East winds 20 to 25 knots. Seas 6 to 9 feet,
occasionally to 11 feet, subsiding to 5 to 7 feet, occasionally
to 9 feet after midnight.
.FRIDAY...Northeast winds 15 to 20 knots, diminishing to 10 to
15 knots in the afternoon. Seas 3 to 5 feet, occasionally to
6 feet. A slight chance of thunderstorms in the morning. A slight
chance of showers.
.FRIDAY NIGHT...East winds 15 to 20 knots, diminishing to 10 to
15 knots after midnight. Seas 3 to 5 feet, occasionally to
6 feet. A slight chance of showers.

Winds and seas higher in and near thunderstorms.

$$