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FZUS54 KLCH 011709
CWFLCH

Coastal Waters Forecast
National Weather Service Lake Charles LA
1209 PM CDT Mon Sep 1 2025

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.

GMZ400-020600-
1209 PM CDT Mon Sep 1 2025

.Synopsis for Lower Atchafalaya River LA to High Island TX out
60 NM including Sabine and Calcasieu Lakes and Vermilion and Cote
Blanche Bays...

A stationary front draped along the coast will be the
focus for showers and storms through Wednesday as it slowly meanders
south through the coastal waters. East to northeast winds will
prevail during that time before turning west to northwest Wed
through Fri as storms taper off.

$$

GMZ430-020600-
Sabine Lake-
1209 PM CDT Mon Sep 1 2025

.TONIGHT...Southeast winds around 5 knots, becoming northeast
after midnight. Lake waters smooth. A chance of showers and
thunderstorms early this evening. A slight chance of showers late
this evening and overnight. A slight chance of thunderstorms
late.
.TUESDAY...East winds around 5 knots. Lake waters smooth. A
chance of showers with a slight chance of thunderstorms early in
the morning. A chance of showers and thunderstorms early in the
afternoon, then a slight chance of showers and thunderstorms
late.
.TUESDAY NIGHT...Southeast winds around 5 knots, becoming
northeast after midnight. Lake waters smooth. A slight chance of
showers and thunderstorms early in the evening.
.WEDNESDAY...Northwest winds around 5 knots, becoming southwest
around 5 knots in the afternoon. Lake waters smooth. A slight
chance of showers and thunderstorms in the afternoon.
.WEDNESDAY NIGHT...Southwest winds around 5 knots. Lake waters
smooth. A slight chance of showers and thunderstorms early in the
evening.
.THURSDAY...West winds around 5 knots, becoming southwest around
5 knots in the afternoon. Lake waters smooth.
.THURSDAY NIGHT...Southwest winds around 5 knots. Lake waters
smooth.
.FRIDAY...Southwest winds around 5 knots. Lake waters smooth.
.FRIDAY NIGHT...South winds around 5 knots. Lake waters smooth.
.SATURDAY...South winds around 5 knots. Lake waters smooth. A
chance of showers and thunderstorms in the afternoon.
.SATURDAY NIGHT...Southeast winds around 5 knots. Lake waters
smooth. A chance of showers and thunderstorms early in the
evening, then a slight chance of showers in the late evening and
overnight. A slight chance of thunderstorms after midnight.

Winds and waves higher in and near thunderstorms.

$$

GMZ432-020600-
Calcasieu Lake-
1209 PM CDT Mon Sep 1 2025

.TONIGHT...East winds around 5 knots. Lake waters smooth. A
chance of showers and thunderstorms early this evening. A slight
chance of showers and thunderstorms after midnight.
.TUESDAY...East winds around 5 knots. Lake waters smooth. A
slight chance of thunderstorms in the morning. A chance of
showers. A chance of thunderstorms in the afternoon.
.TUESDAY NIGHT...East winds around 5 knots. Lake waters smooth. A
slight chance of showers and thunderstorms in the evening, then a
slight chance of showers after midnight.
.WEDNESDAY...North winds around 5 knots, becoming southwest in
the afternoon. Lake waters smooth. A slight chance of showers and
thunderstorms in the afternoon.
.WEDNESDAY NIGHT...Southwest winds around 5 knots. Lake waters
smooth. A slight chance of showers and thunderstorms early in the
evening.
.THURSDAY...West winds around 5 knots. Lake waters smooth.
.THURSDAY NIGHT...Southwest winds around 5 knots. Lake waters
smooth.
.FRIDAY...Southwest winds around 5 knots. Lake waters smooth.
.FRIDAY NIGHT...South winds around 5 knots. Lake waters smooth.
.SATURDAY...Southwest winds around 5 knots, becoming south in the
afternoon. Lake waters smooth. A chance of showers and
thunderstorms in the afternoon.
.SATURDAY NIGHT...Southeast winds around 5 knots, becoming east
after midnight. Lake waters smooth. A chance of showers and
thunderstorms early in the evening, then a slight chance of
showers in the late evening and overnight. A slight chance of
thunderstorms after midnight.

Winds and waves higher in and near thunderstorms.

$$

GMZ435-020600-
Vermilion and West Cote Blanche Bays-
1209 PM CDT Mon Sep 1 2025

.TONIGHT...East winds 5 to 10 knots. Bay waters light chop. A
chance of showers and thunderstorms early this evening, then a
slight chance of showers and thunderstorms late this evening and
overnight.
.TUESDAY...East winds 5 to 10 knots. Bay waters light chop. A
chance of showers. A slight chance of thunderstorms early in the
morning, then a chance of thunderstorms in the late morning and
afternoon.
.TUESDAY NIGHT...East winds around 5 knots. Bay waters smooth. A
slight chance of thunderstorms until early morning. A slight
chance of showers.
.WEDNESDAY...Northeast winds around 5 knots, becoming southeast
in the afternoon. Bay waters smooth. A slight chance of showers
and thunderstorms.
.WEDNESDAY NIGHT...South winds around 5 knots. Bay waters smooth.
A slight chance of showers and thunderstorms early in the
evening.
.THURSDAY...Northwest winds around 5 knots, becoming southwest
around 5 knots in the afternoon. Bay waters smooth.
.THURSDAY NIGHT...Southwest winds around 5 knots. Bay waters
smooth.
.FRIDAY...Southwest winds around 5 knots. Bay waters smooth.
.FRIDAY NIGHT...South winds around 5 knots. Bay waters smooth.
.SATURDAY...West winds around 5 knots, becoming south around
5 knots in the afternoon. Bay waters smooth. A slight chance of
showers and thunderstorms in the afternoon.
.SATURDAY NIGHT...South winds around 5 knots, becoming east
around 5 knots after midnight. Bay waters smooth. A slight chance
of thunderstorms early in the evening. A slight chance of
showers.

Winds and waves higher in and near thunderstorms.

$$

GMZ436-020600-
Atchafalaya and East Cote Blanche Bays-
1209 PM CDT Mon Sep 1 2025

.TONIGHT...East winds 5 to 10 knots. Bay waters light chop. A
chance of showers and thunderstorms early this evening, then a
slight chance of showers and thunderstorms late this evening. A
chance of showers and thunderstorms late.
.TUESDAY...East winds 5 to 10 knots. Bay waters light chop. A
chance of showers and thunderstorms.
.TUESDAY NIGHT...East winds around 5 knots. Bay waters smooth. A
slight chance of thunderstorms. A chance of showers until early
morning, then a slight chance of showers late.
.WEDNESDAY...Northeast winds around 5 knots, becoming southeast
around 5 knots in the afternoon. Bay waters smooth. A slight
chance of showers and thunderstorms until late afternoon, then a
chance of showers and thunderstorms late.
.WEDNESDAY NIGHT...South winds around 5 knots. Bay waters smooth.
A slight chance of showers and thunderstorms early in the
evening.
.THURSDAY...Northwest winds around 5 knots, becoming west around
5 knots in the afternoon. Bay waters smooth.
.THURSDAY NIGHT...South winds around 5 knots. Bay waters smooth.
.FRIDAY...Southwest winds around 5 knots. Bay waters smooth.
.FRIDAY NIGHT...South winds around 5 knots. Bay waters smooth.
.SATURDAY...West winds around 5 knots, becoming southwest around
5 knots in the afternoon. Bay waters smooth. A slight chance of
showers and thunderstorms in the afternoon.
.SATURDAY NIGHT...South winds around 5 knots, becoming east after
midnight. Bay waters smooth. A slight chance of thunderstorms
early in the evening. A slight chance of showers.

Winds and waves higher in and near thunderstorms.

$$

GMZ450-020600-
Coastal waters from Cameron LA to High Island TX out 20 NM-
1209 PM CDT Mon Sep 1 2025

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

$$

GMZ452-020600-
Coastal waters from Intracoastal City to Cameron LA out 20 NM-
1209 PM CDT Mon Sep 1 2025

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

$$

GMZ455-020600-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA out 20 NM-
1209 PM CDT Mon Sep 1 2025

.TONIGHT...East winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: East 1 foot at 3 seconds. A chance of showers and
thunderstorms early this evening, then a slight chance of showers
and thunderstorms late this evening and early morning. A chance
of showers and thunderstorms late.
.TUESDAY...East winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: East 1 foot at 3 seconds. A chance of thunderstorms.
.TUESDAY NIGHT...East winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: East 1 foot at 3 seconds. A chance of showers. A
chance of thunderstorms, mainly in the evening.
.WEDNESDAY...East winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: East 1 foot at 3 seconds. A chance of showers and
thunderstorms until late afternoon, then a slight chance of
showers and thunderstorms late.
.WEDNESDAY NIGHT...South winds around 5 knots. Seas 1 foot or
less. A slight chance of showers and thunderstorms.
.THURSDAY...Northwest winds around 5 knots. Seas 1 foot or less.
A slight chance of showers and thunderstorms early in the
morning.
.THURSDAY NIGHT...South winds around 5 knots. Seas 1 foot or
less.
.FRIDAY...South winds around 5 knots. Seas 1 foot or less.
.FRIDAY NIGHT...South winds around 5 knots. Seas 1 foot or less.
.SATURDAY...Southeast winds around 5 knots. Seas 1 foot or less.
A slight chance of thunderstorms. A slight chance of showers in
the morning, then a chance of showers in the afternoon.
.SATURDAY NIGHT...Southeast winds around 5 knots. Seas 1 foot or
less. A chance of showers with a slight chance of thunderstorms
early in the evening, then a slight chance of showers late in the
evening. A chance of showers with a slight chance of
thunderstorms after midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ470-020600-
Coastal waters from Cameron LA to High Island TX from 20 to 60 NM-
1209 PM CDT Mon Sep 1 2025

.TONIGHT...East winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: East 2 feet at 4 seconds. A chance of thunderstorms. A
chance of showers until early morning, then showers likely late.
.TUESDAY...East winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: East 2 feet at 4 seconds. Showers likely in the morning.
A chance of thunderstorms. A chance of showers in the afternoon.
.TUESDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: East 2 feet at 4 seconds. A chance of showers. A
slight chance of thunderstorms in the late evening and overnight.
.WEDNESDAY...Northeast winds 5 to 10 knots. Seas around 2 feet in
the morning, then 1 foot or less. Wave Detail: East 2 feet at
4 seconds. A chance of showers and thunderstorms until late
afternoon, then a slight chance of showers late.
.WEDNESDAY NIGHT...South winds around 5 knots. Seas 1 foot or
less. Wave Detail: East 1 foot at 5 seconds.
.THURSDAY...Northwest winds around 5 knots. Seas 1 foot or less.
Wave Detail: West 1 foot at 2 seconds and southeast 1 foot at
5 seconds.
.THURSDAY NIGHT...South winds 5 to 10 knots. Seas 1 foot or less,
then around 2 feet after midnight.
.FRIDAY...South winds 5 to 10 knots. Seas 1 foot or less.
.FRIDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 foot or
less.
.SATURDAY...Southeast winds 5 to 10 knots. Seas around 2 feet in
the morning, then 1 foot or less. A chance of showers with a
slight chance of thunderstorms.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 foot or
less, then around 2 feet after midnight. A chance of showers with
a slight chance of thunderstorms early in the evening, then a
slight chance of showers late in the evening. A chance of showers
and thunderstorms after midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ472-020600-
Coastal waters from Intracoastal City to Cameron LA from 20 to
60 NM-
1209 PM CDT Mon Sep 1 2025

.TONIGHT...East winds around 10 knots. Seas around 2 feet. Wave
Detail: East 2 feet at 4 seconds. A chance of thunderstorms. A
chance of showers until early morning, then showers likely late.
.TUESDAY...East winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: East 2 feet at 4 seconds. Showers likely in the morning.
A chance of thunderstorms. A chance of showers in the afternoon.
.TUESDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: East 2 feet at 4 seconds. A chance of showers. A
slight chance of thunderstorms until early morning, then a chance
of thunderstorms late.
.WEDNESDAY...Northeast winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: East 2 feet at 5 seconds. A chance of showers and
thunderstorms until late afternoon, then a slight chance of
showers and thunderstorms late.
.WEDNESDAY NIGHT...Southeast winds around 5 knots. Seas 1 foot or
less. Wave Detail: East 1 foot at 5 seconds. A slight chance of
showers and thunderstorms early in the evening. A slight chance
of showers and thunderstorms after midnight.
.THURSDAY...North winds around 5 knots. Seas 1 foot or less. Wave
Detail: West 1 foot at 2 seconds and southeast 1 foot at
5 seconds. A slight chance of showers and thunderstorms in the
morning.
.THURSDAY NIGHT...South winds 5 to 10 knots. Seas 1 foot or less.
.FRIDAY...South winds 5 to 10 knots. Seas 1 foot or less.
.FRIDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 foot or
less. A slight chance of showers after midnight.
.SATURDAY...Southeast winds around 5 knots. Seas around 2 feet in
the morning, then 1 foot or less. A slight chance of
thunderstorms. A slight chance of showers early in the morning,
then a chance of showers in the late morning and afternoon.
.SATURDAY NIGHT...East winds 5 to 10 knots. Seas 1 foot or less,
then around 2 feet after midnight. A chance of showers with a
slight chance of thunderstorms early in the evening, then a
slight chance of showers late in the evening. A chance of showers
with a slight chance of thunderstorms after midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ475-020600-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA from 20 to 60 NM-
1209 PM CDT Mon Sep 1 2025

.TONIGHT...East winds around 10 knots. Seas around 2 feet. Wave
Detail: East 2 feet at 4 seconds. A chance of thunderstorms. A
chance of showers until early morning, then showers likely late.
.TUESDAY...East winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: East 2 feet at 4 seconds. A chance of thunderstorms.
Showers likely until late afternoon, then a chance of showers
late.
.TUESDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: East 2 feet at 4 seconds. Showers likely.
.WEDNESDAY...Northeast winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: East 2 feet at 5 seconds. Showers likely in the
morning. A chance of thunderstorms. A chance of showers in the
afternoon.
.WEDNESDAY 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
5 seconds. A chance of showers with a slight chance of
thunderstorms early in the evening. A slight chance of showers in
the late evening and overnight. A slight chance of thunderstorms
after midnight.
.THURSDAY...North winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: East 1 foot at 6 seconds. A slight chance of showers and
thunderstorms until late afternoon.
.THURSDAY NIGHT...Southeast winds around 5 knots. Seas 1 foot or
less.
.FRIDAY...Southeast winds around 5 knots. Seas 1 foot or less.
.FRIDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 foot or
less. A slight chance of showers after midnight.
.SATURDAY...East winds around 5 knots. Seas 1 foot or less. A
chance of showers with a slight chance of thunderstorms.
.SATURDAY NIGHT...East winds 5 to 10 knots. Seas 1 foot or less,
then around 2 feet after midnight. A chance of showers with a
slight chance of thunderstorms early in the evening, then a
slight chance of showers late in the evening. A chance of showers
with a slight chance of thunderstorms after midnight.

Winds and seas higher in and near thunderstorms.

$$