199
FZUS54 KLCH 191812
CWFLCH

Coastal Waters Forecast
National Weather Service Lake Charles LA
111 PM CDT Tue Aug 19 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.

GMZ400-200700-
111 PM CDT Tue Aug 19 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 weak pressure pattern will be found over the northwest Gulf for
the next few days. This will bring about light and variable winds
along with low seas. A trough will move toward the coast from the
north on Thursday increasing chances for showers and
thunderstorms during any time of day.

$$

GMZ430-200700-
Sabine Lake-
111 PM CDT Tue Aug 19 2025

.TONIGHT...South winds around 5 knots early this evening,
becoming light and variable, then becoming northwest around
5 knots late. Lake waters smooth. A chance of showers and
thunderstorms early this evening.
.WEDNESDAY...North winds around 5 knots. Lake waters smooth. A
chance of showers and thunderstorms.
.WEDNESDAY NIGHT...Northwest winds around 5 knots. Lake waters
smooth. A chance of showers and thunderstorms.
.THURSDAY...North winds around 5 knots, becoming northeast around
5 knots in the afternoon. Lake waters smooth. Showers likely with
a chance of thunderstorms in the morning, then showers with
thunderstorms likely in the afternoon.
.THURSDAY NIGHT...South winds around 5 knots, becoming northwest
after midnight. Lake waters smooth. A chance of thunderstorms. A
chance of showers in the evening, then showers likely after
midnight.
.FRIDAY...North winds around 5 knots, becoming east around
5 knots in the afternoon. Lake waters smooth. Showers likely with
a chance of thunderstorms.
.FRIDAY NIGHT...Light and variable winds. Lake waters smooth. A
chance of showers with a slight chance of thunderstorms.
.SATURDAY...North winds around 5 knots, becoming east in the
afternoon. Lake waters smooth. A chance of showers and
thunderstorms.
.SATURDAY NIGHT...South winds around 5 knots, becoming west
around 5 knots after midnight. Lake waters smooth. A slight
chance of showers and thunderstorms.
.SUNDAY...North winds around 5 knots, becoming east in the
afternoon. Lake waters smooth. A chance of showers. A slight
chance of thunderstorms in the morning, then a chance of
thunderstorms in the afternoon.
.SUNDAY NIGHT...South winds around 5 knots, becoming west around
5 knots after midnight. Lake waters smooth. A slight chance of
showers after midnight.

Winds and waves higher in and near thunderstorms.

$$

GMZ432-200700-
Calcasieu Lake-
111 PM CDT Tue Aug 19 2025

.TONIGHT...South winds around 5 knots this evening, becoming
light and variable, then becoming northwest around 5 knots late.
Lake waters smooth. A chance of showers and thunderstorms early
this evening. A slight chance of showers and thunderstorms late.
.WEDNESDAY...North winds around 5 knots. Lake waters smooth. A
chance of showers and thunderstorms.
.WEDNESDAY NIGHT...Northwest winds around 5 knots. Lake waters
smooth. A chance of showers and thunderstorms.
.THURSDAY...North winds around 5 knots. Lake waters smooth. A
chance of showers and thunderstorms in the morning, then showers
and thunderstorms in the afternoon.
.THURSDAY NIGHT...Southwest winds around 5 knots, becoming
northwest after midnight. Lake waters smooth. A chance of
thunderstorms. A chance of showers in the evening, then showers
likely after midnight.
.FRIDAY...North winds around 5 knots, becoming east in the
afternoon. Lake 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 west after
midnight. Lake waters smooth. A chance of showers with a slight
chance of thunderstorms.
.SATURDAY...North winds around 5 knots, becoming east in the
afternoon. Lake waters smooth. A chance of showers and
thunderstorms.
.SATURDAY NIGHT...Southwest winds around 5 knots, becoming west
after midnight. Lake waters smooth. A slight chance of showers
and thunderstorms.
.SUNDAY...North winds around 5 knots, becoming east in the
afternoon. Lake waters smooth. A chance of showers and
thunderstorms.
.SUNDAY NIGHT...South winds around 5 knots, becoming west after
midnight. Lake waters smooth. A slight chance of showers after
midnight.

Winds and waves higher in and near thunderstorms.

$$

GMZ435-200700-
Vermilion and West Cote Blanche Bays-
111 PM CDT Tue Aug 19 2025

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

Winds and waves higher in and near thunderstorms.

$$

GMZ436-200700-
Atchafalaya and East Cote Blanche Bays-
111 PM CDT Tue Aug 19 2025

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

Winds and waves higher in and near thunderstorms.

$$

GMZ450-200700-
Coastal waters from Cameron LA to High Island TX out 20 NM-
111 PM CDT Tue Aug 19 2025

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

Winds and seas higher in and near thunderstorms.

$$

GMZ452-200700-
Coastal waters from Intracoastal City to Cameron LA out 20 NM-
111 PM CDT Tue Aug 19 2025

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

Winds and seas higher in and near thunderstorms.

$$

GMZ455-200700-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA out 20 NM-
111 PM CDT Tue Aug 19 2025

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

Winds and seas higher in and near thunderstorms.

$$

GMZ470-200700-
Coastal waters from Cameron LA to High Island TX from 20 to 60 NM-
111 PM CDT Tue Aug 19 2025

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

Winds and seas higher in and near thunderstorms.

$$

GMZ472-200700-
Coastal waters from Intracoastal City to Cameron LA from 20 to
60 NM-
111 PM CDT Tue Aug 19 2025

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

Winds and seas higher in and near thunderstorms.

$$

GMZ475-200700-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA from 20 to 60 NM-
111 PM CDT Tue Aug 19 2025

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

$$