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FZUS54 KLCH 030604
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Coastal Waters Forecast
National Weather Service Lake Charles LA
103 AM 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.

GMZ400-031900-
103 AM 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 midweek.

Weak boundary sitting along the north central Gulf, combined with
waning upper high, will allow scattered nocturnal convection to
return this morning and following mornings. Upper high relaxes from
west to east, with rain chances to follow this trend today into the
weekend. Although surface high will meander around the northern Gulf
Sunday into the work week, expect a return of scattered to numerous
showers and thunderstorms across the waters beneath weakness
aloft.

$$

GMZ430-031900-
Sabine Lake-
103 AM CDT Thu Jul 3 2025

.TODAY...West winds around 5 knots early this morning, becoming
light and variable, then becoming south around 5 knots this
afternoon. Lake waters smooth.
.TONIGHT...Southwest winds around 5 knots. Lake waters smooth.
.FRIDAY...West winds around 5 knots, becoming south 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 southwest 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. A slight chance of showers 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 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.
.MONDAY...North 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 and thunderstorms after
midnight.

Winds and waves higher in and near thunderstorms.

$$

GMZ432-031900-
Calcasieu Lake-
103 AM CDT Thu Jul 3 2025

.TODAY...West winds around 5 knots, becoming southwest this
afternoon. Lake waters smooth.
.TONIGHT...Southwest winds 5 to 10 knots, becoming west after
midnight. 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 southwest around
5 knots in the afternoon. Lake waters smooth. A slight chance of
showers and thunderstorms.
.SATURDAY NIGHT...West winds around 5 knots. Lake waters smooth.
A slight chance of showers and thunderstorms after midnight.
.SUNDAY...North winds around 5 knots, becoming south in the
afternoon. Lake waters smooth. A chance of showers and
thunderstorms.
.SUNDAY 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.
.MONDAY...North winds around 5 knots, becoming south in the
afternoon. Lake waters light chop. A chance of showers and
thunderstorms.
.MONDAY NIGHT...South winds 5 to 10 knots. Lake waters light
chop. A slight chance of showers and thunderstorms after
midnight.

Winds and waves higher in and near thunderstorms.

$$

GMZ435-031900-
Vermilion and West Cote Blanche Bays-
103 AM CDT Thu Jul 3 2025

.TODAY...West winds around 5 knots. Bay waters smooth. A slight
chance of showers and thunderstorms late.
.TONIGHT...West winds around 5 knots. Bay waters smooth. A slight
chance of showers and thunderstorms.
.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 showers and thunderstorms.
.SATURDAY...Northwest winds around 5 knots. Bay waters smooth. A
slight chance of showers and thunderstorms in the morning, then a
chance of showers and thunderstorms in the afternoon.
.SATURDAY NIGHT...Northwest 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...North 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.
.SUNDAY NIGHT...Southwest winds around 5 knots. Bay waters
smooth. A chance of showers with a slight chance of
thunderstorms.
.MONDAY...Southwest winds 5 to 10 knots. Bay waters light chop.
Showers likely with a chance of thunderstorms.
.MONDAY 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.

$$

GMZ436-031900-
Atchafalaya and East Cote Blanche Bays-
103 AM CDT Thu Jul 3 2025

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

Winds and waves higher in and near thunderstorms.

$$

GMZ450-031900-
Coastal waters from Cameron LA to High Island TX out 20 NM-
103 AM CDT Thu Jul 3 2025

.TODAY...Southwest winds 5 to 10 knots. Seas around 2 feet this
morning, then 1 foot or less. Wave Detail: Southwest 2 feet at
5 seconds, becoming southwest 1 foot at 5 seconds.
.TONIGHT...Southwest winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: Southwest 2 feet at 5 seconds.
.FRIDAY...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 in the morning.
.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 after midnight.
.SATURDAY...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.
.SATURDAY 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.
.SUNDAY...Northwest winds 5 to 10 knots, becoming southwest 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 slight chance of showers in the evening, then a chance of
showers with a slight chance of thunderstorms after midnight.
.MONDAY...South winds 5 to 10 knots. Seas 1 foot or less. A
chance of showers. A chance of thunderstorms, 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.

Winds and seas higher in and near thunderstorms.

$$

GMZ452-031900-
Coastal waters from Intracoastal City to Cameron LA out 20 NM-
103 AM CDT Thu Jul 3 2025

.TODAY...West winds around 10 knots, becoming 5 to 10 knots late
this morning and afternoon. Seas around 2 feet. Wave Detail: West
2 feet at 4 seconds.
.TONIGHT...West winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southwest 2 feet at 5 seconds.
.FRIDAY...West winds around 5 knots. Seas 1 foot or less. Wave
Detail: Southwest 1 foot at 4 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 slight chance of
showers and thunderstorms.
.SATURDAY...Northwest winds around 5 knots, becoming west in the
afternoon. Seas 1 foot or less. Wave Detail: West 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. 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...South 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 chance of showers with a slight chance of thunderstorms
after midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ455-031900-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA out 20 NM-
103 AM CDT Thu Jul 3 2025

.TODAY...West winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: West 1 foot at 3 seconds. A slight chance of showers and
thunderstorms.
.TONIGHT...West winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: West 1 foot at 3 seconds. A slight chance of showers and
thunderstorms in the evening, then a chance of showers and
thunderstorms after midnight.
.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: West 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...North winds 5 to 10 knots, becoming northwest in the
afternoon. Seas 1 foot or less. Wave Detail: Northwest 1 foot at
3 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 3 seconds. 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 southeast in the
afternoon. Seas 1 foot or less. A chance of thunderstorms.
Showers 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...Southwest 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.

Winds and seas higher in and near thunderstorms.

$$

GMZ470-031900-
Coastal waters from Cameron LA to High Island TX from 20 to 60 NM-
103 AM CDT Thu Jul 3 2025

.TODAY...Southwest winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: South 2 feet at 6 seconds.
.TONIGHT...Southwest winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: South 2 feet at 6 seconds.
.FRIDAY...Southwest winds around 5 knots. Seas around 2 feet.
Wave Detail: South 2 feet at 6 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: Southwest 1 foot at 5 seconds. A slight
chance of showers after midnight.
.SATURDAY...Southwest 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 morning.
.SATURDAY NIGHT...Southwest winds around 5 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.
.SUNDAY...Northwest winds around 5 knots. Seas 1 foot or less. A
chance of showers and thunderstorms, mainly in the morning.
.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 5 to 10 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.

Winds and seas higher in and near thunderstorms.

$$

GMZ472-031900-
Coastal waters from Intracoastal City to Cameron LA from 20 to
60 NM-
103 AM CDT Thu Jul 3 2025

.TODAY...West winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: West 2 feet at 5 seconds and southeast 1 foot at
6 seconds.
.TONIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or less,
then around 2 feet after midnight. Wave Detail: South 1 foot at
6 seconds, becoming southwest 2 feet at 5 seconds and southeast
1 foot at 6 seconds.
.FRIDAY...Northwest winds around 5 knots. Seas 1 foot or less.
Wave Detail: West 1 foot at 5 seconds and southeast 1 foot at
7 seconds. A slight chance of showers and thunderstorms.
.FRIDAY 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 after midnight.
.SATURDAY...Northwest winds around 5 knots. Seas 1 foot or less.
Wave Detail: West 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: West 1 foot at 4 seconds. A chance of showers and
thunderstorms after midnight.
.SUNDAY...North 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.
.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...Southeast 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
chance of showers with a slight chance of thunderstorms after
midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ475-031900-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA from 20 to 60 NM-
103 AM CDT Thu Jul 3 2025

.TODAY...West winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: West 2 feet at 4 seconds and southeast 1 foot at
6 seconds. A slight chance of showers and thunderstorms.
.TONIGHT...West winds 5 to 10 knots. Seas around 2 feet in the
evening, then 1 foot or less. Wave Detail: West 1 foot at
5 seconds and southeast 1 foot at 7 seconds, becoming west 1 foot
at 4 seconds and southeast 1 foot at 8 seconds. A slight chance
of showers and thunderstorms after midnight.
.FRIDAY...Northwest winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: West 1 foot at 4 seconds and southeast 1 foot at
9 seconds. A chance of showers with a slight chance of
thunderstorms.
.FRIDAY NIGHT...Northwest winds 5 to 10 knots. Seas 1 foot or
less. Wave Detail: Northwest 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: Northwest 1 foot at 4 seconds. A chance of showers
and thunderstorms, mainly in the morning.
.SATURDAY NIGHT...Northwest winds around 5 knots. Seas 1 foot or
less. Wave Detail: Northwest 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 around 5 knots, becoming east in the
afternoon. 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.
.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.
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
chance of showers with a slight chance of thunderstorms after
midnight.

Winds and seas higher in and near thunderstorms.

$$