Coastal Waters Forecast
Issued by NWS Lake Charles, LA

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FZUS54 KLCH 031803
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Coastal Waters Forecast
National Weather Service Lake Charles LA
103 PM CDT Thu Jul 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-
103 PM CDT Thu Jul 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...

High pressure area situated over the northern Gulf, while weak and
meandering at times, will result in light, variable winds and low
seas through the start of next week. Upper level weakness then
moves overhead in line with expansive surface high situated over
the eastern seaboard. This will bring about consistent onshore
flow beginning in the early to mid next work week. Daily scattered
showers to return to the forecast this weekend.

$$

GMZ430-040700-
Sabine Lake-
103 PM CDT Thu Jul 3 2025

.TONIGHT...Southwest winds around 5 knots. Lake waters smooth.
.FRIDAY...Light and variable winds, becoming south around 5 knots
in the afternoon. Lake waters smooth. A slight chance of showers
and thunderstorms.
.FRIDAY NIGHT...Southwest winds around 5 knots. Lake waters
smooth.
.SATURDAY...Light and variable winds, becoming south around
5 knots in the afternoon. Lake waters smooth. A slight chance of
showers and thunderstorms.
.SATURDAY NIGHT...Southwest winds around 5 knots. Lake waters
smooth.
.SUNDAY...Northwest winds around 5 knots, becoming south 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...Southwest winds around 5 knots. Lake waters
smooth. A slight chance of showers and thunderstorms after
midnight.
.MONDAY...West winds around 5 knots, becoming south in the
afternoon. Lake waters smooth. A chance of showers and
thunderstorms.
.MONDAY NIGHT...Southwest winds around 5 knots. Lake waters
smooth. A slight chance of showers after midnight.
.TUESDAY...West winds around 5 knots, becoming south in the
afternoon. Lake waters light chop. A chance of showers and
thunderstorms.
.TUESDAY NIGHT...Southwest winds 5 to 10 knots. Lake waters light
chop.

Winds and waves higher in and near thunderstorms.

$$

GMZ432-040700-
Calcasieu Lake-
103 PM CDT Thu Jul 3 2025

.TONIGHT...Southwest winds 5 to 10 knots, becoming west late.
Lake waters light chop.
.FRIDAY...Northwest winds around 5 knots, becoming southwest
around 5 knots in the afternoon. Lake waters smooth. A slight
chance of showers and thunderstorms.
.FRIDAY NIGHT...Southwest winds around 5 knots. Lake waters
smooth.
.SATURDAY...North 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.
.SATURDAY NIGHT...West winds around 5 knots. Lake waters smooth.
A slight chance of showers and thunderstorms after midnight.
.SUNDAY...Northwest winds around 5 knots, becoming south in the
afternoon. Lake waters smooth. A chance of showers and
thunderstorms.
.SUNDAY NIGHT...Southwest winds 5 to 10 knots. Lake waters light
chop. A chance of showers with a slight chance of thunderstorms
after midnight.
.MONDAY...West winds around 5 knots, becoming south in the
afternoon. Lake waters light chop. A chance of showers and
thunderstorms.
.MONDAY NIGHT...Southwest winds 5 to 10 knots. Lake waters light
chop. A slight chance of showers and thunderstorms after
midnight.
.TUESDAY...Southwest winds around 5 knots, increasing to 5 to
10 knots in the afternoon. Lake waters light chop. A chance of
showers. A slight chance of thunderstorms in the morning, then a
chance of thunderstorms in the afternoon.
.TUESDAY NIGHT...Southwest winds 5 to 10 knots. Lake waters light
chop.

Winds and waves higher in and near thunderstorms.

$$

GMZ435-040700-
Vermilion and West Cote Blanche Bays-
103 PM CDT Thu Jul 3 2025

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

Winds and waves higher in and near thunderstorms.

$$

GMZ436-040700-
Atchafalaya and East Cote Blanche Bays-
103 PM CDT Thu Jul 3 2025

.TONIGHT...West winds 5 to 10 knots. Bay waters light chop. 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.
.FRIDAY...Northwest winds around 5 knots. Bay waters smooth. A
chance of showers and thunderstorms.
.FRIDAY NIGHT...Northwest winds around 5 knots. Bay waters
smooth. A chance of showers. A chance of thunderstorms, mainly in
the evening.
.SATURDAY...Northwest winds around 5 knots. Bay waters smooth. A
chance of showers and thunderstorms.
.SATURDAY NIGHT...Northwest winds around 5 knots. Bay waters
smooth. A chance of showers and thunderstorms.
.SUNDAY...North winds around 5 knots, becoming southwest in the
afternoon. Bay waters smooth. A chance of thunderstorms. Showers
likely, mainly in the morning.
.SUNDAY NIGHT...South 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.
.MONDAY...Southeast winds around 5 knots, becoming southwest in
the afternoon. Bay waters smooth. Showers likely with a chance of
thunderstorms.
.MONDAY NIGHT...Southwest winds around 5 knots. Bay waters
smooth. A slight chance of showers and thunderstorms after
midnight.
.TUESDAY...Southwest winds around 5 knots, increasing to 5 to
10 knots in the afternoon. Bay waters light chop. A chance of
showers and thunderstorms.
.TUESDAY NIGHT...Southwest winds 5 to 10 knots. Bay waters light
chop. A slight 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-
103 PM CDT Thu Jul 3 2025

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

$$

GMZ452-040700-
Coastal waters from Intracoastal City to Cameron LA out 20 NM-
103 PM CDT Thu Jul 3 2025

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

$$

GMZ455-040700-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA out 20 NM-
103 PM CDT Thu Jul 3 2025

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

$$

GMZ470-040700-
Coastal waters from Cameron LA to High Island TX from 20 to 60 NM-
103 PM CDT Thu Jul 3 2025

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

Winds and seas higher in and near thunderstorms.

$$

GMZ472-040700-
Coastal waters from Intracoastal City to Cameron LA from 20 to
60 NM-
103 PM CDT Thu Jul 3 2025

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

$$

GMZ475-040700-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA from 20 to 60 NM-
103 PM CDT Thu Jul 3 2025

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

$$