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FZUS54 KLCH 142010
CWFLCH

Coastal Waters Forecast
National Weather Service Lake Charles LA
309 PM CDT Mon Sep 14 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.

GMZ400-150900-
309 PM CDT Mon Sep 14 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 over the northern gulf will keep conditions
calm, with seas around 1 foot and winds between 5 and 10 knots today
and Tuesday. By Wednesday, a disturbance will traverse the northern
gulf from east to west with a strong fetch developing along the
coast. Winds of 20-25 knots will develop increasing wave heights to
up to 8 feet Wednesday night and Thursday. Mariners should expect
Small Craft Advisories or similar headlines starting on Wednesday.

$$

GMZ430-150900-
Sabine Lake-
309 PM CDT Mon Sep 14 2026

.TONIGHT...South winds around 5 knots. Lake waters smooth.
.TUESDAY...Southeast winds around 5 knots. Lake waters smooth. A
slight chance of showers and thunderstorms in the afternoon.
.TUESDAY NIGHT...Southeast winds around 5 knots. Lake waters
smooth.
.WEDNESDAY...Northeast winds 5 to 10 knots, becoming east in the
afternoon. Lake waters light chop. A slight chance of showers and
thunderstorms in the afternoon.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Lake waters light
chop. A slight chance of thunderstorms in the evening. A chance
of showers.
.THURSDAY...East winds 5 to 10 knots. Lake waters light chop. A
slight chance of showers and thunderstorms in the morning.
.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, becoming east
after midnight. Lake waters smooth.
.SATURDAY...East winds around 5 knots. Lake waters smooth. A
slight chance of showers and thunderstorms.
.SATURDAY NIGHT...Southeast winds around 5 knots. Lake waters
smooth. A slight chance of showers and thunderstorms after
midnight.

Winds and waves higher in and near thunderstorms.

$$

GMZ432-150900-
Calcasieu Lake-
309 PM CDT Mon Sep 14 2026

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

Winds and waves higher in and near thunderstorms.

$$

GMZ435-150900-
Vermilion and West Cote Blanche Bays-
309 PM CDT Mon Sep 14 2026

.TONIGHT...Southwest winds around 5 knots. Bay waters smooth.
.TUESDAY...Northeast winds around 5 knots, becoming south in the
afternoon. Bay waters smooth.
.TUESDAY NIGHT...South winds around 5 knots, becoming east around
5 knots after midnight. Bay waters smooth.
.WEDNESDAY...East winds 10 to 15 knots. Bay waters choppy.
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 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.
.SATURDAY...East winds 5 to 10 knots, becoming southeast in the
afternoon. Bay waters light chop. A chance of showers. A slight
chance of thunderstorms in the morning, then a chance of
thunderstorms in the afternoon.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters light
chop. A slight chance of thunderstorms. A slight chance of
showers in the evening, then a chance of showers after midnight.

Winds and waves higher in and near thunderstorms.

$$

GMZ436-150900-
Atchafalaya and East Cote Blanche Bays-
309 PM CDT Mon Sep 14 2026

.TONIGHT...Southwest winds around 5 knots. Bay waters smooth.
.TUESDAY...Northeast winds around 5 knots, becoming south in the
afternoon. Bay waters smooth. A slight chance of showers and
thunderstorms in the afternoon.
.TUESDAY NIGHT...Southeast winds around 5 knots, becoming east
after midnight. Bay waters smooth. A chance of showers and
thunderstorms in the evening.
.WEDNESDAY...East winds 10 to 15 knots. Bay waters choppy. A
slight chance of showers and thunderstorms in the morning, then
showers 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 5 to 10 knots. Bay waters light chop.
A slight chance of showers and thunderstorms.
.SATURDAY...East winds 5 to 10 knots. Bay 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.
.SATURDAY NIGHT...Southeast winds around 5 knots. Bay waters
smooth. A slight chance of thunderstorms. A slight chance of
showers in the evening, then a chance of showers after midnight.

Winds and waves higher in and near thunderstorms.

$$

GMZ450-150900-
Coastal waters from Cameron LA to High Island TX out 20 NM-
309 PM CDT Mon Sep 14 2026

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

Winds and seas higher in and near thunderstorms.

$$

GMZ452-150900-
Coastal waters from Intracoastal City to Cameron LA out 20 NM-
309 PM CDT Mon Sep 14 2026

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

Winds and seas higher in and near thunderstorms.

$$

GMZ455-150900-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA out 20 NM-
309 PM CDT Mon Sep 14 2026

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

Winds and seas higher in and near thunderstorms.

$$

GMZ470-150900-
Coastal waters from Cameron LA to High Island TX from 20 to 60 NM-
309 PM CDT Mon Sep 14 2026

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

Winds and seas higher in and near thunderstorms.

$$

GMZ472-150900-
Coastal waters from Intracoastal City to Cameron LA from 20 to
60 NM-
309 PM CDT Mon Sep 14 2026

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

Winds and seas higher in and near thunderstorms.

$$

GMZ475-150900-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA from 20 to 60 NM-
309 PM CDT Mon Sep 14 2026

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

Winds and seas higher in and near thunderstorms.

$$