874
FZUS54 KLCH 212010
CWFLCH

Coastal Waters Forecast
National Weather Service Lake Charles LA
310 PM CDT Mon Sep 21 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.

GMZ400-220900-
310 PM CDT Mon Sep 21 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...

Light east to southeast winds and low seas will persist
across the coastal waters through Tuesday. A weak frontal boundary
will move into the coastal waters Wednesday with offshore winds
briefly increasing to 15-20 knots Thursday. Onshore flow returns by
the weekend.

$$

GMZ430-220900-
Sabine Lake-
310 PM CDT Mon Sep 21 2026

.TONIGHT...South winds around 5 knots this evening, becoming
light and variable, then becoming north around 5 knots late. Lake
waters smooth.
.TUESDAY...Northeast winds around 5 knots. Lake waters smooth. A
chance of showers and thunderstorms in the afternoon.
.TUESDAY NIGHT...East winds around 5 knots. Lake waters smooth. A
chance of showers and thunderstorms in the evening.
.WEDNESDAY...Northeast winds 5 to 10 knots. Lake waters light
chop.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Lake waters light
chop.
.THURSDAY...Northeast winds 10 to 15 knots, diminishing to 5 to
10 knots in the afternoon. Lake waters choppy.
.THURSDAY NIGHT...Northeast winds around 5 knots, increasing to
5 to 10 knots after midnight. Lake waters light chop.
.FRIDAY...Northeast winds 5 to 10 knots, becoming east in the
afternoon. Lake waters light chop.
.FRIDAY NIGHT...Southeast winds around 5 knots. Lake waters
smooth.
.SATURDAY...East winds around 5 knots. Lake waters smooth.
.SATURDAY NIGHT...South winds around 5 knots. Lake waters smooth.

Winds and waves higher in and near thunderstorms.

$$

GMZ432-220900-
Calcasieu Lake-
310 PM CDT Mon Sep 21 2026

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

Winds and waves higher in and near thunderstorms.

$$

GMZ435-220900-
Vermilion and West Cote Blanche Bays-
310 PM CDT Mon Sep 21 2026

.TONIGHT...West winds around 5 knots, becoming north around
5 knots late this evening and overnight. Bay waters smooth. A
chance of showers and thunderstorms early this evening.
.TUESDAY...Northeast winds 5 to 10 knots, becoming east in the
afternoon. Bay waters light chop.
.TUESDAY NIGHT...South winds around 5 knots, becoming east around
5 knots after midnight. Bay waters smooth. A slight chance of
showers and thunderstorms in the evening.
.WEDNESDAY...Northeast winds 5 to 10 knots. Bay waters light
chop.
.WEDNESDAY NIGHT...East winds around 5 knots, becoming northeast
after midnight. Bay waters light chop.
.THURSDAY...Northeast winds 10 to 15 knots, diminishing to 5 to
10 knots in the afternoon. Bay waters choppy.
.THURSDAY NIGHT...Northeast winds 5 to 10 knots. Bay waters light
chop.
.FRIDAY...Northeast winds 5 to 10 knots, becoming southeast in
the afternoon. Bay waters light chop.
.FRIDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters light
chop.
.SATURDAY...Southeast winds 5 to 10 knots. Bay waters light chop.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters light
chop.

Winds and waves higher in and near thunderstorms.

$$

GMZ436-220900-
Atchafalaya and East Cote Blanche Bays-
310 PM CDT Mon Sep 21 2026

.TONIGHT...West winds around 5 knots, becoming northeast late
this evening and overnight. Bay waters smooth. A chance of
showers and thunderstorms early this evening.
.TUESDAY...Northeast winds 5 to 10 knots, becoming east in the
afternoon. Bay waters light chop.
.TUESDAY NIGHT...Southeast winds around 5 knots, becoming east
after midnight. Bay waters smooth.
.WEDNESDAY...Northeast winds 5 to 10 knots. Bay waters light
chop. A slight chance of showers and thunderstorms in the
afternoon.
.WEDNESDAY NIGHT...East winds around 5 knots, becoming northeast
after midnight. Bay waters light chop.
.THURSDAY...Northeast winds 5 to 10 knots. Bay waters light chop.
.THURSDAY NIGHT...Northeast winds 5 to 10 knots. Bay waters light
chop.
.FRIDAY...Northeast winds 5 to 10 knots, becoming southeast in
the afternoon. Bay waters light chop.
.FRIDAY NIGHT...Southeast 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.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters light
chop.

Winds and waves higher in and near thunderstorms.

$$

GMZ450-220900-
Coastal waters from Cameron LA to High Island TX out 20 NM-
310 PM CDT Mon Sep 21 2026

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

Winds and seas higher in and near thunderstorms.

$$

GMZ452-220900-
Coastal waters from Intracoastal City to Cameron LA out 20 NM-
310 PM CDT Mon Sep 21 2026

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

Winds and seas higher in and near thunderstorms.

$$

GMZ455-220900-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA out 20 NM-
310 PM CDT Mon Sep 21 2026

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

Winds and seas higher in and near thunderstorms.

$$

GMZ470-220900-
Coastal waters from Cameron LA to High Island TX from 20 to 60 NM-
310 PM CDT Mon Sep 21 2026

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

Winds and seas higher in and near thunderstorms.

$$

GMZ472-220900-
Coastal waters from Intracoastal City to Cameron LA from 20 to
60 NM-
310 PM CDT Mon Sep 21 2026

.TONIGHT...East winds around 5 knots. Seas 1 foot or less. Wave
Detail: Southeast 1 foot at 4 seconds.
.TUESDAY...Northeast winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: East 2 feet at 4 seconds.
.TUESDAY NIGHT...East winds 5 to 10 knots, diminishing to around
5 knots after midnight. Seas 1 foot or less. Wave Detail:
Southeast 1 foot at 4 seconds.
.WEDNESDAY...Northeast winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: East 2 feet at 4 seconds.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: East 2 feet at 5 seconds.
.THURSDAY...Northeast winds 10 to 15 knots. Seas 2 to 3 feet.
Wave Detail: East 3 feet at 5 seconds.
.THURSDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet.
.FRIDAY...East winds 5 to 10 knots. Seas around 2 feet.
.FRIDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet.
.SATURDAY...East winds 5 to 10 knots. Seas 2 to 3 feet.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to
3 feet.

$$

GMZ475-220900-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA from 20 to 60 NM-
310 PM CDT Mon Sep 21 2026

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

$$