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FZUS54 KLCH 141744
CWFLCH

Coastal Waters Forecast
National Weather Service Lake Charles LA
1243 PM CDT Mon Jul 14 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.

GMZ400-150600-
1243 PM CDT Mon Jul 14 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...

High pressure extending across the northern Gulf will maintain
light onshore winds and low seas through Wednesday. The forecast
through the second half of the week will be highly dependent on
the potential tropical development in the eastern gulf. Regardless
of development, much higher precipitation chances and increasing
winds and seas are expected Thursday through the end of the week.

$$

GMZ430-150600-
Sabine Lake-
1243 PM CDT Mon Jul 14 2025

.TONIGHT...Southwest winds 5 to 10 knots, diminishing to around
5 knots late. Lake waters light chop.
.TUESDAY...Southwest winds around 5 knots, becoming south in the
afternoon. Lake waters light chop. A slight chance of showers and
thunderstorms in the afternoon.
.TUESDAY NIGHT...South winds 5 to 10 knots, becoming southwest
after midnight. Lake waters light chop.
.WEDNESDAY...West winds around 5 knots, becoming south in the
afternoon. Lake waters light chop.
.WEDNESDAY NIGHT...Southwest winds 5 to 10 knots, diminishing to
around 5 knots after midnight. Lake waters light chop.
.THURSDAY...West winds around 5 knots, becoming south 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.
.THURSDAY NIGHT...Southwest winds around 5 knots. Lake waters
smooth. A slight chance of thunderstorms. A slight chance of
showers in the evening, then a chance of showers after midnight.
.FRIDAY...Southwest winds around 5 knots. 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. Lake waters smooth. A
slight chance of showers and thunderstorms after midnight.
.SATURDAY...Southwest winds 5 to 10 knots. Lake waters light
chop. A chance of showers and thunderstorms.
.SATURDAY NIGHT...Southwest winds 5 to 10 knots. Lake waters
light chop.

Winds and waves higher in and near thunderstorms.

$$

GMZ432-150600-
Calcasieu Lake-
1243 PM CDT Mon Jul 14 2025

.TONIGHT...Southwest winds 5 to 10 knots. Lake waters light chop.
.TUESDAY...West winds around 5 knots, becoming south in the
afternoon. Lake waters light chop. A slight chance of showers and
thunderstorms.
.TUESDAY NIGHT...Southwest winds 5 to 10 knots. Lake waters light
chop.
.WEDNESDAY...West winds around 5 knots, becoming south in the
afternoon. Lake waters light chop.
.WEDNESDAY NIGHT...Southwest winds 5 to 10 knots. Lake waters
light chop.
.THURSDAY...West 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 in the
evening, then a chance of showers and thunderstorms after
midnight.
.FRIDAY...Southwest winds around 5 knots. Lake waters smooth.
Showers. A chance of thunderstorms in the morning, then
thunderstorms likely in the afternoon.
.FRIDAY NIGHT...South winds 5 to 10 knots. Lake waters light
chop. A slight chance of thunderstorms. A slight chance of
showers in the evening, then a chance of showers after midnight.
.SATURDAY...Southwest winds 5 to 10 knots. Lake waters light
chop. A chance of thunderstorms. Showers likely, mainly in the
morning.
.SATURDAY NIGHT...Southwest winds 5 to 10 knots. Lake waters
light chop.

Winds and waves higher in and near thunderstorms.

$$

GMZ435-150600-
Vermilion and West Cote Blanche Bays-
1243 PM CDT Mon Jul 14 2025

.TONIGHT...Southwest winds around 5 knots. Bay waters smooth.
.TUESDAY...Northwest winds around 5 knots, becoming southwest
around 5 knots 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.
.TUESDAY NIGHT...West winds 5 to 10 knots. Bay waters light chop.
.WEDNESDAY...Northwest winds around 5 knots, becoming southwest
around 5 knots 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. Bay waters
smooth. 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, becoming west in the
afternoon. Bay waters smooth. Thunderstorms likely. Showers.
.THURSDAY NIGHT...South winds around 5 knots. Bay waters smooth.
A chance of thunderstorms. A chance of showers in the evening,
then showers likely after midnight.
.FRIDAY...Southwest winds 5 to 10 knots. Bay waters light chop.
Showers. A chance of thunderstorms in the morning, then
thunderstorms likely in the afternoon.
.FRIDAY NIGHT...Southwest winds 5 to 10 knots. Bay waters light
chop. A slight chance of thunderstorms. A slight chance of
showers in the evening, then a chance of showers after midnight.
.SATURDAY...Southwest winds around 5 knots. Bay waters smooth.
Showers likely with a chance of thunderstorms in the morning,
then showers and thunderstorms likely in the afternoon.
.SATURDAY NIGHT...Southwest winds around 5 knots. Bay waters
smooth. A slight chance of showers and thunderstorms after
midnight.

Winds and waves higher in and near thunderstorms.

$$

GMZ436-150600-
Atchafalaya and East Cote Blanche Bays-
1243 PM CDT Mon Jul 14 2025

.TONIGHT...Southwest winds around 5 knots. Bay waters smooth. A
slight chance of showers and thunderstorms early this evening.
.TUESDAY...West winds around 5 knots. Bay waters smooth. A chance
of showers. A slight chance of thunderstorms in the morning, then
a chance of thunderstorms in the afternoon.
.TUESDAY NIGHT...West winds around 5 knots. Bay waters smooth.
.WEDNESDAY...Northwest winds around 5 knots. Bay waters smooth. A
chance of showers and thunderstorms.
.WEDNESDAY 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.
.THURSDAY...North winds around 5 knots, becoming west in the
afternoon. Bay waters smooth. Showers with a chance of
thunderstorms in the morning, then showers with thunderstorms
likely in the afternoon.
.THURSDAY NIGHT...Southwest winds around 5 knots. Bay waters
smooth. A chance of thunderstorms. A chance of showers in the
evening, then showers likely after midnight.
.FRIDAY...Southwest winds 5 to 10 knots. Bay waters light chop.
Showers. A chance of thunderstorms in the morning, then
thunderstorms likely in the afternoon.
.FRIDAY NIGHT...Southwest winds 5 to 10 knots. Bay waters light
chop. A slight chance of thunderstorms. A slight chance of
showers in the evening, then a chance of showers after midnight.
.SATURDAY...Southwest winds around 5 knots. Bay waters smooth.
Showers likely with a chance of thunderstorms in the morning,
then showers and thunderstorms likely in the afternoon.
.SATURDAY NIGHT...Southwest winds around 5 knots. Bay waters
smooth. A slight chance of showers and thunderstorms after
midnight.

Winds and waves higher in and near thunderstorms.

$$

GMZ450-150600-
Coastal waters from Cameron LA to High Island TX out 20 NM-
1243 PM CDT Mon Jul 14 2025

.TONIGHT...South winds around 10 knots. Seas around 2 feet. Wave
Detail: South 2 feet at 5 seconds.
.TUESDAY...Southwest winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: South 2 feet at 5 seconds. A slight chance of
showers and thunderstorms.
.TUESDAY NIGHT...Southwest winds around 10 knots. Seas around
2 feet. Wave Detail: South 2 feet at 5 seconds.
.WEDNESDAY...Southwest winds 5 to 10 knots. Seas around 2 feet in
the morning, then 1 foot or less. Wave Detail: South 1 foot at
5 seconds.
.WEDNESDAY NIGHT...Southwest winds 5 to 10 knots. Seas around
2 feet. Wave Detail: South 2 feet at 5 seconds. A slight chance
of showers after midnight.
.THURSDAY...West winds 5 to 10 knots, becoming south in the
afternoon. Seas 1 foot or less. Wave Detail: South 1 foot at
5 seconds. 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...Southwest winds 5 to 10 knots. Seas around 2 feet. A
chance of thunderstorms. Showers likely.
.FRIDAY NIGHT...South winds around 10 knots. Seas around 2 feet.
A chance of showers and thunderstorms after midnight.
.SATURDAY...Southwest winds 5 to 10 knots. Seas around 2 feet. A
chance of showers and thunderstorms.
.SATURDAY NIGHT...South winds around 10 knots. Seas around
2 feet. A slight chance of showers and thunderstorms after
midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ452-150600-
Coastal waters from Intracoastal City to Cameron LA out 20 NM-
1243 PM CDT Mon Jul 14 2025

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

Winds and seas higher in and near thunderstorms.

$$

GMZ455-150600-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA out 20 NM-
1243 PM CDT Mon Jul 14 2025

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

Winds and seas higher in and near thunderstorms.

$$

GMZ470-150600-
Coastal waters from Cameron LA to High Island TX from 20 to 60 NM-
1243 PM CDT Mon Jul 14 2025

.TONIGHT...South winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: South 2 feet at 5 seconds.
.TUESDAY...South winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: South 2 feet at 5 seconds. A slight chance of showers and
thunderstorms.
.TUESDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: South 2 feet at 6 seconds.
.WEDNESDAY...Southwest winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: South 2 feet at 5 seconds. A slight chance of
showers and thunderstorms in the morning.
.WEDNESDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: South 2 feet at 6 seconds. A slight chance of
showers after midnight.
.THURSDAY...Southwest winds 5 to 10 knots, becoming south in the
afternoon. Seas around 2 feet in the morning, then 1 foot or
less. Wave Detail: South 2 feet at 5 seconds, becoming south
1 foot at 5 seconds. A chance of showers. A chance of
thunderstorms, mainly in the morning.
.THURSDAY 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.
.FRIDAY...Southwest winds 5 to 10 knots. Seas around 2 feet.
Showers likely with a chance of thunderstorms in the morning,
then a chance of showers with a slight chance of thunderstorms in
the afternoon.
.FRIDAY NIGHT...South winds around 10 knots. Seas around 2 feet.
A chance of showers with a slight chance of thunderstorms after
midnight.
.SATURDAY...Southwest winds 5 to 10 knots. Seas around 2 feet. A
chance of showers. A chance of thunderstorms, mainly in the
morning.
.SATURDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet.
A slight chance of showers and thunderstorms after midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ472-150600-
Coastal waters from Intracoastal City to Cameron LA from 20 to
60 NM-
1243 PM CDT Mon Jul 14 2025

.TONIGHT...Southwest winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: South 2 feet at 5 seconds.
.TUESDAY...Southwest winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: South 2 feet at 6 seconds. A slight chance of
showers and thunderstorms.
.TUESDAY NIGHT...Southwest winds 5 to 10 knots. Seas around
2 feet. Wave Detail: South 2 feet at 6 seconds.
.WEDNESDAY...West winds around 5 knots. Seas around 2 feet in the
morning, then 1 foot or less. Wave Detail: Southwest 1 foot at
5 seconds. A slight chance of showers and thunderstorms.
.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...Northwest winds around 5 knots. Seas 1 foot or less.
Wave Detail: Southwest 1 foot at 5 seconds. Showers and
thunderstorms likely in the morning, then showers likely with a
chance of thunderstorms in the afternoon.
.THURSDAY NIGHT...Southwest winds around 5 knots, increasing to
around 10 knots after midnight. 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.
.FRIDAY...Southwest winds 5 to 10 knots. Seas around 2 feet in
the morning, then 1 foot or less. Showers with a chance of
thunderstorms in the morning, then showers likely with a slight
chance of thunderstorms in the afternoon.
.FRIDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet. A
chance of showers with a slight chance of thunderstorms after
midnight.
.SATURDAY...Southwest winds 5 to 10 knots. Seas around 2 feet. A
chance of thunderstorms. Showers likely, mainly in the morning.
.SATURDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet.
A slight chance of showers and thunderstorms after midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ475-150600-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA from 20 to 60 NM-
1243 PM CDT Mon Jul 14 2025

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

Winds and seas higher in and near thunderstorms.

$$