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FZUS54 KLCH 031807
CWFLCH

Coastal Waters Forecast
National Weather Service Lake Charles LA
106 PM CDT Sun Aug 3 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.

GMZ400-040700-
106 PM CDT Sun Aug 3 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 surface front will remain nearly stationary right along the
coast and with a weak pressure pattern over the coastal waters,
mainly light westerly to offshore winds and low seas are expected.
There will still be a chance for showers and thunderstorms south
of front. By mid week, lower pressure will form over the Plains
with a weak surface high over the northern Gulf. This will allow
for light onshore winds to return.

$$

GMZ430-040700-
Sabine Lake-
106 PM CDT Sun Aug 3 2025

.TONIGHT...South winds around 5 knots early this evening,
becoming light and variable, then becoming northwest around
5 knots late. Lake waters smooth.
.MONDAY...Northeast winds around 5 knots. Lake waters smooth. A
slight chance of showers and thunderstorms in the afternoon.
.MONDAY NIGHT...South winds around 5 knots in the evening,
becoming light and variable. Lake waters smooth.
.TUESDAY...North winds around 5 knots, becoming southeast in the
afternoon. Lake waters smooth. A slight chance of showers and
thunderstorms in the morning, then a chance of showers and
thunderstorms in the afternoon.
.TUESDAY NIGHT...South winds around 5 knots. Lake waters smooth.
A slight chance of showers and thunderstorms in the evening.
.WEDNESDAY...South winds around 5 knots. Lake waters smooth. A
chance of showers and thunderstorms.
.WEDNESDAY NIGHT...Southwest winds around 5 knots. Lake waters
smooth. A slight chance of showers and thunderstorms in the
evening.
.THURSDAY...West winds around 5 knots, becoming south around
5 knots in the afternoon. Lake waters smooth. A chance of showers
and thunderstorms.
.THURSDAY NIGHT...Southwest winds around 5 knots. Lake waters
smooth. A slight chance of showers and thunderstorms.
.FRIDAY...West winds around 5 knots, becoming south in the
afternoon. Lake waters smooth. A chance of showers and
thunderstorms.
.FRIDAY NIGHT...South winds around 5 knots. Lake waters smooth. A
slight chance of showers and thunderstorms after midnight.

Winds and waves higher in and near thunderstorms.

$$

GMZ432-040700-
Calcasieu Lake-
106 PM CDT Sun Aug 3 2025

.TONIGHT...West winds around 5 knots this evening, becoming light
and variable, then becoming northeast around 5 knots late. Lake
waters smooth. A slight chance of showers and thunderstorms late.
.MONDAY...Northeast winds around 5 knots. Lake waters smooth.
.MONDAY NIGHT...South winds around 5 knots, becoming southeast
after midnight. Lake waters smooth. A slight chance of showers
and thunderstorms after midnight.
.TUESDAY...North winds around 5 knots, becoming southeast in the
afternoon. Lake waters smooth. A slight chance of showers and
thunderstorms in the morning, then a chance of showers and
thunderstorms in the afternoon.
.TUESDAY NIGHT...South winds around 5 knots. Lake waters smooth.
A slight chance of showers and thunderstorms.
.WEDNESDAY...South winds around 5 knots. Lake waters smooth. A
chance of showers and thunderstorms.
.WEDNESDAY NIGHT...Southwest winds around 5 knots. Lake waters
smooth. A slight chance of showers and thunderstorms.
.THURSDAY...Northwest winds around 5 knots, becoming southwest in
the afternoon. Lake waters smooth. A chance of showers and
thunderstorms.
.THURSDAY NIGHT...Southwest winds around 5 knots. Lake waters
smooth. A slight chance of showers and thunderstorms.
.FRIDAY...West winds around 5 knots, becoming south around
5 knots in the afternoon. Lake waters smooth. A chance of showers
and thunderstorms.
.FRIDAY NIGHT...South winds around 5 knots. Lake waters smooth. A
slight chance of showers and thunderstorms.

Winds and waves higher in and near thunderstorms.

$$

GMZ435-040700-
Vermilion and West Cote Blanche Bays-
106 PM CDT Sun Aug 3 2025

.TONIGHT...North winds around 5 knots. Bay waters smooth. A
slight chance of showers and thunderstorms early this evening. A
slight chance of showers and thunderstorms after midnight.
.MONDAY...North winds around 5 knots. Bay waters smooth. A slight
chance of showers and thunderstorms.
.MONDAY NIGHT...South winds around 5 knots. Bay waters smooth. A
slight chance of showers and thunderstorms in the evening, then a
chance of showers and thunderstorms after midnight.
.TUESDAY...Northeast winds around 5 knots, becoming south in the
afternoon. Bay waters smooth. A chance of thunderstorms. A chance
of showers in the morning, then showers likely in the afternoon.
.TUESDAY NIGHT...South winds around 5 knots. Bay waters smooth. A
slight chance of showers and thunderstorms in the evening, then a
chance of showers and thunderstorms after midnight.
.WEDNESDAY...South winds around 5 knots. Bay waters smooth. A
chance of showers and thunderstorms in the morning, then showers
and thunderstorms likely in the afternoon.
.WEDNESDAY NIGHT...Southwest winds around 5 knots. Bay waters
smooth. A slight chance of showers and thunderstorms in the
evening, then a chance of showers and thunderstorms after
midnight.
.THURSDAY...Northwest winds around 5 knots, becoming southwest in
the afternoon. Bay waters smooth. A chance of showers and
thunderstorms in the morning, then showers and thunderstorms
likely in the afternoon.
.THURSDAY NIGHT...Southwest winds around 5 knots. Bay waters
smooth. A chance of showers and thunderstorms.
.FRIDAY...Northwest winds around 5 knots, becoming south in the
afternoon. Bay waters smooth. A chance of showers and
thunderstorms.
.FRIDAY NIGHT...South winds around 5 knots. Bay waters smooth. A
slight chance of showers and thunderstorms in the evening, then a
chance of showers and thunderstorms after midnight.

Winds and waves higher in and near thunderstorms.

$$

GMZ436-040700-
Atchafalaya and East Cote Blanche Bays-
106 PM CDT Sun Aug 3 2025

.TONIGHT...North winds around 5 knots. Bay waters smooth. A
slight chance of thunderstorms this evening. A chance of showers.
A chance of thunderstorms after midnight.
.MONDAY...North winds around 5 knots, becoming northwest in the
afternoon. Bay waters smooth. A chance of showers and
thunderstorms.
.MONDAY NIGHT...South winds around 5 knots. Bay waters smooth. A
chance of showers. A slight chance of thunderstorms in the
evening, then a chance of thunderstorms after midnight.
.TUESDAY...South winds around 5 knots. Bay waters smooth. A
chance of showers and thunderstorms in the morning, then showers
and thunderstorms likely in the afternoon.
.TUESDAY NIGHT...South winds around 5 knots. Bay waters smooth. A
slight chance of showers and thunderstorms in the evening, then a
chance of showers and thunderstorms after midnight.
.WEDNESDAY...Southwest winds around 5 knots. Bay waters smooth.
Showers and thunderstorms likely.
.WEDNESDAY NIGHT...Southwest winds around 5 knots. Bay waters
smooth. A slight chance of showers and thunderstorms in the
evening, then a chance of showers and thunderstorms after
midnight.
.THURSDAY...West winds around 5 knots. Bay waters smooth. Showers
likely. A chance of thunderstorms in the morning, then
thunderstorms likely in the afternoon.
.THURSDAY NIGHT...West winds around 5 knots. Bay waters smooth. A
slight chance of showers and thunderstorms in the evening, then a
chance of showers and thunderstorms after midnight.
.FRIDAY...Northwest winds around 5 knots, becoming southwest
around 5 knots in the afternoon. Bay waters smooth. Showers
likely. A chance of thunderstorms in the morning, then
thunderstorms likely in the afternoon.
.FRIDAY NIGHT...South winds around 5 knots. Bay waters smooth. A
slight chance of showers and thunderstorms in the evening, then a
chance of showers and thunderstorms after midnight.

Winds and waves higher in and near thunderstorms.

$$

GMZ450-040700-
Coastal waters from Cameron LA to High Island TX out 20 NM-
106 PM CDT Sun Aug 3 2025

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

$$

GMZ452-040700-
Coastal waters from Intracoastal City to Cameron LA out 20 NM-
106 PM CDT Sun Aug 3 2025

.TONIGHT...West winds around 5 knots, becoming north after
midnight. Seas 1 foot or less. Wave Detail: Northwest 1 foot at
2 seconds. A slight chance of showers and thunderstorms early
this evening. A slight chance of showers and thunderstorms after
midnight, then a chance of showers and thunderstorms late.
.MONDAY...Northeast winds 5 to 10 knots, becoming west in the
afternoon. Seas 1 foot or less. Wave Detail: North 1 foot at
2 seconds. A slight chance of showers and thunderstorms.
.MONDAY NIGHT...South winds around 5 knots. Seas 1 foot or less.
Wave Detail: Southwest 1 foot at 2 seconds. A slight chance of
showers in the evening, then a chance of showers and
thunderstorms after midnight.
.TUESDAY...North winds around 5 knots, becoming south in the
afternoon. Seas 1 foot or less. Wave Detail: Northwest 1 foot at
2 seconds. A chance of showers and thunderstorms.
.TUESDAY NIGHT...South winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: Southwest 1 foot at 2 seconds. A slight chance of
showers and thunderstorms in the evening, then a chance of
showers and thunderstorms after midnight.
.WEDNESDAY...Southwest winds around 5 knots. Seas 1 foot or less.
Wave Detail: South 1 foot at 4 seconds. A chance of
thunderstorms. Showers likely, mainly in the morning.
.WEDNESDAY NIGHT...Southwest 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.
.THURSDAY...West winds around 5 knots. Seas 1 foot or less. A
chance of thunderstorms. Showers likely, mainly in the morning.
.THURSDAY NIGHT...Southwest winds around 5 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.
.FRIDAY...Southwest winds around 5 knots. Seas 1 foot or less. A
chance of thunderstorms. Showers likely, mainly in the morning.
.FRIDAY NIGHT...South 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.

$$

GMZ455-040700-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA out 20 NM-
106 PM CDT Sun Aug 3 2025

.TONIGHT...Northwest winds around 5 knots, becoming north after
midnight. Seas 1 foot or less. A slight chance of thunderstorms
this evening. A chance of showers. A chance of thunderstorms
after midnight.
.MONDAY...North winds 5 to 10 knots, diminishing to around
5 knots in the afternoon. Seas 1 foot or less. A chance of
showers and thunderstorms.
.MONDAY NIGHT...South winds around 5 knots. Seas 1 foot or less.
A chance of showers. A slight chance of thunderstorms in the
evening, then a chance of thunderstorms after midnight.
.TUESDAY...South winds around 5 knots. Seas 1 foot or less. Wave
Detail: Southwest 1 foot at 2 seconds. Showers and thunderstorms
likely.
.TUESDAY NIGHT...South winds around 5 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.
.WEDNESDAY...Southwest winds around 5 knots. Seas 1 foot or less.
Wave Detail: Southwest 1 foot at 3 seconds. Showers and
thunderstorms likely, mainly in the morning.
.WEDNESDAY NIGHT...Southwest winds around 5 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.
.THURSDAY...West winds around 5 knots. Seas 1 foot or less.
Showers likely with a chance of thunderstorms.
.THURSDAY NIGHT...Southwest winds around 5 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.
.FRIDAY...West winds around 5 knots. Seas 1 foot or less. A
chance of thunderstorms. Showers likely, mainly in the morning.
.FRIDAY NIGHT...South winds around 5 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.

$$

GMZ470-040700-
Coastal waters from Cameron LA to High Island TX from 20 to 60 NM-
106 PM CDT Sun Aug 3 2025

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

Winds and seas higher in and near thunderstorms.

$$

GMZ472-040700-
Coastal waters from Intracoastal City to Cameron LA from 20 to
60 NM-
106 PM CDT Sun Aug 3 2025

.TONIGHT...Northwest winds around 5 knots. Seas 1 foot or less.
Wave Detail: Northwest 1 foot at 3 seconds. A chance of showers
with a slight chance of thunderstorms after midnight. A chance of
showers and thunderstorms late.
.MONDAY...North winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: Northwest 1 foot at 2 seconds. A chance of showers and
thunderstorms, mainly in the morning.
.MONDAY NIGHT...South winds around 5 knots. Seas 1 foot or less.
Wave Detail: Northeast 1 foot at 2 seconds. A slight chance of
showers in the evening, then a chance of showers with a slight
chance of thunderstorms after midnight.
.TUESDAY...South winds around 5 knots. Seas 1 foot or less. Wave
Detail: West 1 foot at 2 seconds. A chance of thunderstorms.
Showers likely, mainly in the morning.
.TUESDAY NIGHT...South winds around 5 knots. Seas 1 foot or less.
Wave Detail: South 1 foot at 3 seconds. A slight chance of
showers and thunderstorms in the evening, then a chance of
showers and thunderstorms after midnight.
.WEDNESDAY...South winds around 5 knots. Seas 1 foot or less.
Wave Detail: South 1 foot at 4 seconds. A chance of
thunderstorms. Showers likely, mainly in the morning.
.WEDNESDAY NIGHT...South winds around 5 knots. Seas 1 foot or
less. A chance of showers and thunderstorms after midnight.
.THURSDAY...West winds around 5 knots. Seas 1 foot or less. A
chance of thunderstorms. Showers likely, mainly in the morning.
.THURSDAY NIGHT...Southwest winds around 5 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.
.FRIDAY...West winds around 5 knots. Seas 1 foot or less. A
chance of thunderstorms. Showers likely, mainly in the morning.
.FRIDAY NIGHT...South winds 5 to 10 knots. Seas 1 foot or less. A
chance of showers and thunderstorms after midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ475-040700-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA from 20 to 60 NM-
106 PM CDT Sun Aug 3 2025

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

$$