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FZUS54 KLCH 200809
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Coastal Waters Forecast
National Weather Service Lake Charles LA
309 AM CDT Sun Sep 20 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.

GMZ400-202100-
309 AM CDT Sun Sep 20 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 exist across the
coastal waters through Tuesday. A weak frontal boundary may move
into the coastal waters Wednesday, with offshore winds increasing
into SCEC criteria and increasing rain chances.

$$

GMZ430-202100-
Sabine Lake-
309 AM CDT Sun Sep 20 2026

.TODAY...East winds around 5 knots, becoming southeast late. Lake
waters light chop.
.TONIGHT...South winds 5 to 10 knots, diminishing to around
5 knots after midnight. Lake waters light chop.
.MONDAY...Northeast winds around 5 knots, becoming southeast in
the afternoon. Lake waters smooth.
.MONDAY NIGHT...South winds around 5 knots, becoming west around
5 knots after midnight. Lake waters smooth.
.TUESDAY...North winds around 5 knots, becoming northeast around
5 knots in the afternoon. Lake waters smooth.
.TUESDAY NIGHT...Southeast winds around 5 knots, becoming east
after midnight. Lake waters smooth.
.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 5 to 10 knots. Lake waters
light chop.

$$

GMZ432-202100-
Calcasieu Lake-
309 AM CDT Sun Sep 20 2026

.TODAY...East winds around 5 knots, becoming southeast early this
afternoon, then becoming south late. Lake waters light chop.
.TONIGHT...South winds 5 to 10 knots, becoming southwest after
midnight. Lake waters light chop.
.MONDAY...North winds around 5 knots, becoming south around
5 knots in the afternoon. Lake waters smooth.
.MONDAY NIGHT...South winds around 5 knots, becoming west around
5 knots after midnight. Lake waters smooth.
.TUESDAY...North winds 5 to 10 knots, becoming east in the
afternoon. Lake waters light chop. A slight chance of showers and
thunderstorms in the afternoon.
.TUESDAY NIGHT...South winds around 5 knots, becoming east around
5 knots after midnight. Lake waters smooth.
.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. Lake waters choppy.
.THURSDAY NIGHT...Northeast winds 5 to 10 knots. Lake waters
light chop.

Winds and waves higher in and near thunderstorms.

$$

GMZ435-202100-
Vermilion and West Cote Blanche Bays-
309 AM CDT Sun Sep 20 2026

.TODAY...East winds around 5 knots, becoming southeast this
afternoon. Bay waters light chop.
.TONIGHT...South winds 5 to 10 knots, becoming west after
midnight. Bay waters light chop.
.MONDAY...North 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.
.MONDAY NIGHT...South winds around 5 knots, becoming northwest
after midnight. Bay waters smooth.
.TUESDAY...North winds around 5 knots, becoming east in the
afternoon. Bay waters smooth. A slight chance of showers and
thunderstorms in the afternoon.
.TUESDAY NIGHT...South winds around 5 knots, becoming east after
midnight. Bay waters smooth.
.WEDNESDAY...Northeast winds 5 to 10 knots. Bay waters light
chop.
.WEDNESDAY NIGHT...East winds 5 to 10 knots, becoming northeast
10 to 15 knots after midnight. Bay waters choppy.
.THURSDAY...Northeast winds 10 to 15 knots, diminishing to 5 to
10 knots in the afternoon. Bay waters choppy.
.THURSDAY NIGHT...Northeast winds 10 to 15 knots. Bay waters
choppy.

Winds and waves higher in and near thunderstorms.

$$

GMZ436-202100-
Atchafalaya and East Cote Blanche Bays-
309 AM CDT Sun Sep 20 2026

.TODAY...East winds around 5 knots, becoming south around 5 knots
this afternoon. Bay waters smooth.
.TONIGHT...South winds around 5 knots, becoming southwest after
midnight. Bay waters smooth.
.MONDAY...North winds around 5 knots, becoming west in the
afternoon. Bay waters smooth. A chance of showers and
thunderstorms in the afternoon.
.MONDAY NIGHT...Southwest winds around 5 knots, becoming north
after midnight. Bay waters smooth.
.TUESDAY...North winds around 5 knots, becoming east in the
afternoon. Bay waters smooth. A chance of showers and
thunderstorms in the afternoon.
.TUESDAY NIGHT...Southeast winds around 5 knots. 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 5 to 10 knots. 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.

Winds and waves higher in and near thunderstorms.

$$

GMZ450-202100-
Coastal waters from Cameron LA to High Island TX out 20 NM-
309 AM CDT Sun Sep 20 2026

.TODAY...Southeast winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southeast 2 feet at 5 seconds.
.TONIGHT...South winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southeast 2 feet at 4 seconds.
.MONDAY...East winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: Southeast 1 foot at 4 seconds.
.MONDAY NIGHT...South winds 5 to 10 knots, becoming southwest
after midnight. Seas 1 foot or less. Wave Detail: South 1 foot at
4 seconds.
.TUESDAY...North winds 5 to 10 knots, becoming east in the
afternoon. Seas 1 foot or less. Wave Detail: Northwest 1 foot at
3 seconds. A chance of showers and thunderstorms in the morning.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 foot or
less. Wave Detail: Southeast 1 foot at 3 seconds. A chance of
showers and thunderstorms after midnight.
.WEDNESDAY...Northeast winds 10 to 15 knots. Seas around 2 feet.
A slight chance of showers and thunderstorms in the morning.
.WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet. A
slight chance of showers and thunderstorms after midnight.
.THURSDAY...Northeast winds 15 to 20 knots, becoming east 10 to
15 knots in the afternoon. Seas 2 to 3 feet.
.THURSDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet.

Winds and seas higher in and near thunderstorms.

$$

GMZ452-202100-
Coastal waters from Intracoastal City to Cameron LA out 20 NM-
309 AM CDT Sun Sep 20 2026

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

Winds and seas higher in and near thunderstorms.

$$

GMZ455-202100-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA out 20 NM-
309 AM CDT Sun Sep 20 2026

.TODAY...East winds around 5 knots. Seas 1 foot or less. Wave
Detail: Southeast 1 foot at 3 seconds.
.TONIGHT...South winds around 5 knots. Seas 1 foot or less. Wave
Detail: Southeast 1 foot at 3 seconds.
.MONDAY...North 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 afternoon.
.MONDAY NIGHT...South winds around 5 knots, becoming north after
midnight. Seas 1 foot or less.
.TUESDAY...North winds 5 to 10 knots, becoming east in the
afternoon. Seas 1 foot or less. Wave Detail: Northeast 1 foot at
2 seconds. A slight chance of showers and thunderstorms.
.TUESDAY NIGHT...Southeast 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.
A slight chance of showers and thunderstorms in the afternoon.
.WEDNESDAY NIGHT...East winds 5 to 10 knots, becoming northeast
10 to 15 knots after midnight. Seas 1 foot or less, then around
2 feet after midnight.
.THURSDAY...Northeast winds 10 to 15 knots, diminishing to 5 to
10 knots in the afternoon. Seas 1 to 2 feet.
.THURSDAY NIGHT...Northeast winds 10 to 15 knots. Seas 1 to
2 feet.

Winds and seas higher in and near thunderstorms.

$$

GMZ470-202100-
Coastal waters from Cameron LA to High Island TX from 20 to 60 NM-
309 AM CDT Sun Sep 20 2026

.TODAY...Southeast winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southeast 2 feet at 6 seconds. A slight chance of showers
late this morning and afternoon. A slight chance of thunderstorms
early this afternoon.
.TONIGHT...Southeast winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: Southeast 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: Southeast 2 feet at
5 seconds, becoming southeast 1 foot at 5 seconds.
.MONDAY NIGHT...Southeast 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: Northeast 1 foot at 4 seconds. A chance of showers
and thunderstorms in the morning.
.TUESDAY NIGHT...Southeast winds around 5 knots. Seas 1 foot or
less. Wave Detail: East 1 foot at 4 seconds. A chance of showers
and thunderstorms after midnight.
.WEDNESDAY...Northeast winds 10 to 15 knots. Seas 2 to 3 feet. A
slight chance of showers and thunderstorms.
.WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas around 2 feet.
A slight chance of showers and thunderstorms after midnight.
.THURSDAY...Northeast winds 15 to 20 knots. Seas 2 to 4 feet. A
slight chance of showers and thunderstorms.
.THURSDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet.

Winds and seas higher in and near thunderstorms.

$$

GMZ472-202100-
Coastal waters from Intracoastal City to Cameron LA from 20 to
60 NM-
309 AM CDT Sun Sep 20 2026

.TODAY...East winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southeast 2 feet at 6 seconds.
.TONIGHT...Southeast winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: Southeast 2 feet at 5 seconds.
.MONDAY...East winds around 5 knots. Seas 1 foot or less. Wave
Detail: Southeast 1 foot at 5 seconds.
.MONDAY NIGHT...Southeast 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: Northeast 1 foot at 4 seconds. A chance of showers
and thunderstorms in the morning.
.TUESDAY NIGHT...Southeast 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 after midnight.
.WEDNESDAY...Northeast winds 10 to 15 knots. Seas 2 to 3 feet.
.WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas around 2 feet.
.THURSDAY...Northeast winds 15 to 20 knots, diminishing to 10 to
15 knots in the afternoon. Seas 2 to 4 feet. A slight chance of
showers in the afternoon.
.THURSDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet.

Winds and seas higher in and near thunderstorms.

$$

GMZ475-202100-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA from 20 to 60 NM-
309 AM CDT Sun Sep 20 2026

.TODAY...East winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southeast 2 feet at 6 seconds.
.TONIGHT...Southeast winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: Southeast 2 feet at 5 seconds.
.MONDAY...Northeast winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: Southeast 1 foot at 4 seconds. A slight chance of
showers and thunderstorms in the afternoon.
.MONDAY NIGHT...East winds around 5 knots. Seas 1 foot or less.
Wave Detail: East 1 foot at 4 seconds.
.TUESDAY...Northeast winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: Northeast 1 foot at 4 seconds. A slight chance of
showers and thunderstorms in the morning.
.TUESDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: East 2 feet at 4 seconds.
.WEDNESDAY...Northeast winds 10 to 15 knots. Seas 2 to 3 feet.
.WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet.
.THURSDAY...Northeast winds 15 to 20 knots, diminishing to 10 to
15 knots in the afternoon. Seas 2 to 4 feet. A slight chance of
showers in the afternoon.
.THURSDAY NIGHT...Northeast winds 10 to 15 knots. Seas 2 to
4 feet.

Winds and seas higher in and near thunderstorms.

$$