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FZUS54 KLCH 040514
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Coastal Waters Forecast
National Weather Service Lake Charles LA
1214 AM CDT Mon Aug 4 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.

GMZ400-041800-
1214 AM CDT Mon Aug 4 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...

With boundary situated over coastal waters, expect elevated
rainchances to persist in the evenings and overnight hours. A trof
moves into the northeast Gulf which will keep elevated rain chances
for coastal waters into majority of the next work week.

Outside of nearby showers and thunderstorms, wind and seas are
forecast to remain low and offshore through the forecast time frame.

$$

GMZ430-041800-
Sabine Lake-
1214 AM CDT Mon Aug 4 2025

.TODAY...Northeast winds around 5 knots, becoming southeast
around 5 knots late. Lake waters smooth. A slight chance of
showers and thunderstorms early this afternoon.
.TONIGHT...South winds around 5 knots in the evening, becoming
light and variable. Lake waters smooth.
.TUESDAY...North winds around 5 knots, becoming east 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...Northeast winds around 5 knots, becoming south
around 5 knots in the afternoon. Lake waters smooth. A chance of
showers and thunderstorms.
.WEDNESDAY NIGHT...Southwest winds around 5 knots. Lake waters
smooth.
.THURSDAY...Light and variable winds, 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.

Winds and waves higher in and near thunderstorms.

$$

GMZ432-041800-
Calcasieu Lake-
1214 AM CDT Mon Aug 4 2025

.TODAY...Northeast winds around 5 knots. Lake waters smooth.
.TONIGHT...Southeast winds around 5 knots, becoming north around
5 knots after midnight. Lake waters smooth.
.TUESDAY...North winds around 5 knots, becoming east 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...North winds around 5 knots, becoming south in the
afternoon. Lake waters smooth. A chance of showers and
thunderstorms.
.WEDNESDAY NIGHT...Southwest winds around 5 knots. Lake waters
smooth. A slight chance of showers. A slight chance of
thunderstorms after midnight.
.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 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.

$$

GMZ435-041800-
Vermilion and West Cote Blanche Bays-
1214 AM CDT Mon Aug 4 2025

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

Winds and waves higher in and near thunderstorms.

$$

GMZ436-041800-
Atchafalaya and East Cote Blanche Bays-
1214 AM CDT Mon Aug 4 2025

.TODAY...North winds around 5 knots. Bay waters smooth. A chance
of showers and thunderstorms early this morning. A slight chance
of showers and thunderstorms early this afternoon, then a chance
of showers and thunderstorms late.
.TONIGHT...Southeast winds around 5 knots. Bay waters smooth. A
slight chance of showers. A slight chance of thunderstorms in the
evening, then a chance of thunderstorms after midnight.
.TUESDAY...Northeast winds around 5 knots, becoming south around
5 knots in the afternoon. 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. A
chance of showers and thunderstorms.
.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...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.
.FRIDAY...Northwest winds around 5 knots, becoming southwest 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, becoming southeast
around 5 knots after midnight. Bay waters smooth. A chance of
showers and thunderstorms.

Winds and waves higher in and near thunderstorms.

$$

GMZ450-041800-
Coastal waters from Cameron LA to High Island TX out 20 NM-
1214 AM CDT Mon Aug 4 2025

.TODAY...Northeast winds around 5 knots, becoming south late.
Seas 1 foot or less. Wave Detail: Northeast 1 foot at 2 seconds.
A chance of showers and thunderstorms early this morning, then a
slight chance of showers and thunderstorms late this morning and
early afternoon.
.TONIGHT...Southwest winds around 5 knots. Seas 1 foot or less.
Wave Detail: South 1 foot at 2 seconds.
.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 slight 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 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. Wave Detail: South 1 foot at 3 seconds. A slight chance of
showers and thunderstorms after midnight.
.THURSDAY...Southwest winds 5 to 10 knots. 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.
.FRIDAY...West winds 5 to 10 knots, becoming southwest in the
afternoon. Seas 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.

Winds and seas higher in and near thunderstorms.

$$

GMZ452-041800-
Coastal waters from Intracoastal City to Cameron LA out 20 NM-
1214 AM CDT Mon Aug 4 2025

.TODAY...North winds 5 to 10 knots, becoming west late. Seas
1 foot or less. Wave Detail: North 1 foot at 2 seconds. A slight
chance of showers and thunderstorms this morning. A slight chance
of showers and thunderstorms late.
.TONIGHT...Southwest winds around 5 knots. Seas 1 foot or less.
Wave Detail: Southwest 1 foot at 2 seconds. A slight chance of
showers and thunderstorms after midnight.
.TUESDAY...North winds around 5 knots, becoming southeast 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.
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 showers and
thunderstorms.
.WEDNESDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or
less. Wave Detail: South 1 foot at 4 seconds. A slight chance of
showers and thunderstorms after midnight.
.THURSDAY...West winds around 5 knots. 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 southwest in the
afternoon. 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.

$$

GMZ455-041800-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA out 20 NM-
1214 AM CDT Mon Aug 4 2025

.TODAY...North winds around 5 knots. Seas 1 foot or less. A
chance of showers and thunderstorms, mainly this morning.
.TONIGHT...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.
.TUESDAY...Northeast winds around 5 knots, becoming southeast in
the afternoon. Seas 1 foot or less. A chance of showers and
thunderstorms.
.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.
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. 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 around 5 knots. Seas 1 foot or less.
A chance of showers and thunderstorms.

Winds and seas higher in and near thunderstorms.

$$

GMZ470-041800-
Coastal waters from Cameron LA to High Island TX from 20 to 60 NM-
1214 AM CDT Mon Aug 4 2025

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

Winds and seas higher in and near thunderstorms.

$$

GMZ472-041800-
Coastal waters from Intracoastal City to Cameron LA from 20 to
60 NM-
1214 AM CDT Mon Aug 4 2025

.TODAY...North winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: North 1 foot at 2 seconds. A chance of showers and
thunderstorms early this morning, then a slight chance of showers
and thunderstorms late this morning and afternoon.
.TONIGHT...South winds around 5 knots. Seas 1 foot or less. A
slight chance of showers and thunderstorms after midnight.
.TUESDAY...North winds around 5 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.
.TUESDAY NIGHT...South winds around 5 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 with a slight
chance of thunderstorms after midnight.
.WEDNESDAY...South winds around 5 knots. Seas 1 foot or less.
Wave Detail: Southeast 1 foot at 3 seconds. A chance of
thunderstorms. Showers likely, mainly in the morning.
.WEDNESDAY NIGHT...South winds around 5 knots. Seas 1 foot or
less. Wave Detail: Southeast 1 foot at 5 seconds. A slight 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 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
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.

$$

GMZ475-041800-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA from 20 to 60 NM-
1214 AM CDT Mon Aug 4 2025

.TODAY...North winds around 5 knots. Seas 1 foot or less. Wave
Detail: Northwest 1 foot at 3 seconds. Showers likely this
morning. A chance of thunderstorms. A chance of showers this
afternoon.
.TONIGHT...East winds around 5 knots, becoming south after
midnight. Seas 1 foot or less. Wave Detail: North 1 foot at
3 seconds. A slight chance of showers and thunderstorms in the
evening, then a chance of showers and thunderstorms after
midnight.
.TUESDAY...Northwest winds around 5 knots, becoming east in the
afternoon. Seas 1 foot or less. Wave Detail: Southwest 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: Southeast 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 around 5 knots. Seas 1 foot or less.
Wave Detail: Southeast 1 foot at 4 seconds. Showers and
thunderstorms likely, mainly in the morning.
.WEDNESDAY NIGHT...Southwest winds around 5 knots. Seas 1 foot or
less. Wave Detail: South 1 foot at 6 seconds. 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...West 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, 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.

$$