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FZUS54 KLCH 131802
CWFLCH

Coastal Waters Forecast
National Weather Service Lake Charles LA
101 PM CDT Sun Jul 13 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.

GMZ400-140700-
101 PM CDT Sun Jul 13 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 late next week. Daily
scattered showers and thunderstorms will continue over the coastal
waters through Monday with lower rain chances Tuesday and
Wednesday as upper level ridging builds across the northern gulf.

$$

GMZ430-140700-
Sabine Lake-
101 PM CDT Sun Jul 13 2025

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

Winds and waves higher in and near thunderstorms.

$$

GMZ432-140700-
Calcasieu Lake-
101 PM CDT Sun Jul 13 2025

.TONIGHT...South winds 5 to 10 knots. Lake waters light chop. A
slight chance of showers and thunderstorms early this evening.
.MONDAY...Southwest winds 5 to 10 knots. Lake waters light chop.
A chance of showers and thunderstorms.
.MONDAY NIGHT...Southwest winds 5 to 10 knots. 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 morning, then a chance of showers and
thunderstorms in the afternoon.
.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. A slight chance of showers and
thunderstorms in the afternoon.
.WEDNESDAY NIGHT...Southwest winds 5 to 10 knots. Lake waters
light chop.
.THURSDAY...Northwest winds around 5 knots, becoming south in the
afternoon. Lake waters light chop. A slight chance of showers and
thunderstorms in the morning, then a chance of showers and
thunderstorms in the afternoon.
.THURSDAY NIGHT...Southwest 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.
.FRIDAY...West winds around 5 knots, becoming south 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. Lake 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.

$$

GMZ435-140700-
Vermilion and West Cote Blanche Bays-
101 PM CDT Sun Jul 13 2025

.TONIGHT...South winds 5 to 10 knots. Bay waters light chop. A
slight chance of showers and thunderstorms late.
.MONDAY...Southwest winds around 5 knots. Bay waters smooth. A
chance of showers and thunderstorms in the morning, then showers
and thunderstorms likely in the afternoon.
.MONDAY NIGHT...Southwest winds around 5 knots. Bay waters
smooth.
.TUESDAY...Northwest winds around 5 knots, becoming southwest in
the afternoon. Bay waters light chop. A chance of showers and
thunderstorms.
.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 5 to 10 knots, becoming west
after midnight. Bay waters light chop. 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 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 and thunderstorms.
.FRIDAY...Southwest winds around 5 knots. Bay waters smooth.
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 chance of showers.

Winds and waves higher in and near thunderstorms.

$$

GMZ436-140700-
Atchafalaya and East Cote Blanche Bays-
101 PM CDT Sun Jul 13 2025

.TONIGHT...South winds around 5 knots. Bay waters smooth. A
slight chance of showers and thunderstorms early this evening. A
slight chance of showers and thunderstorms late.
.MONDAY...Southwest winds around 5 knots. Bay waters smooth. A
chance of showers and thunderstorms in the morning, then showers
and thunderstorms likely in the afternoon.
.MONDAY NIGHT...Southwest winds around 5 knots. Bay waters
smooth. A chance of showers and thunderstorms in the evening.
.TUESDAY...Northwest winds around 5 knots, becoming southwest in
the afternoon. Bay waters smooth. A chance of showers and
thunderstorms.
.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...South winds around 5 knots, becoming west
after midnight. 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 likely 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 around 5 knots. Bay waters smooth.
Showers. A chance of thunderstorms in the morning, then
thunderstorms likely in the afternoon.
.FRIDAY NIGHT...South winds around 5 knots. Bay waters smooth. A
slight chance of thunderstorms. A chance of showers.

Winds and waves higher in and near thunderstorms.

$$

GMZ450-140700-
Coastal waters from Cameron LA to High Island TX out 20 NM-
101 PM CDT Sun Jul 13 2025

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

$$

GMZ452-140700-
Coastal waters from Intracoastal City to Cameron LA out 20 NM-
101 PM CDT Sun Jul 13 2025

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

$$

GMZ455-140700-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA out 20 NM-
101 PM CDT Sun Jul 13 2025

.TONIGHT...South winds around 5 knots. Seas 1 foot or less. Wave
Detail: South 1 foot at 5 seconds. A chance of showers and
thunderstorms late.
.MONDAY...Southwest winds around 5 knots. Seas 1 foot or less.
Wave Detail: Southwest 1 foot at 3 seconds. A chance of showers
and thunderstorms.
.MONDAY NIGHT...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...West winds around 5 knots. Seas 1 foot or less. Wave
Detail: Southwest 1 foot at 4 seconds. A chance of showers. A
chance of 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. A slight chance of
showers and thunderstorms after midnight.
.WEDNESDAY...Northwest winds around 5 knots. Seas 1 foot or less.
Wave Detail: West 1 foot at 3 seconds. A chance of showers and
thunderstorms.
.WEDNESDAY NIGHT...South winds around 5 knots, becoming west
after midnight. 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...North winds around 5 knots, becoming west in the
afternoon. Seas 1 foot or less. Showers likely with a chance of
thunderstorms.
.THURSDAY NIGHT...Southwest 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...Southwest winds around 5 knots. Seas 1 foot or less. A
chance of thunderstorms. Showers.
.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.

$$

GMZ470-140700-
Coastal waters from Cameron LA to High Island TX from 20 to 60 NM-
101 PM CDT Sun Jul 13 2025

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

Winds and seas higher in and near thunderstorms.

$$

GMZ472-140700-
Coastal waters from Intracoastal City to Cameron LA from 20 to
60 NM-
101 PM CDT Sun Jul 13 2025

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

$$

GMZ475-140700-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA from 20 to 60 NM-
101 PM CDT Sun Jul 13 2025

.TONIGHT...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 early this evening. A slight chance of showers and
thunderstorms after midnight, then a chance of showers and
thunderstorms late.
.MONDAY...Southwest winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: South 2 feet at 5 seconds. A chance of showers and
thunderstorms.
.MONDAY NIGHT...Southwest winds around 5 knots. Seas around
2 feet. Wave Detail: South 1 foot at 5 seconds. A slight chance
of showers and thunderstorms after midnight.
.TUESDAY...West winds around 5 knots. Seas around 2 feet. Wave
Detail: Southwest 1 foot at 5 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 5 seconds. A slight chance of
showers and thunderstorms after midnight.
.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. 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. A
chance of thunderstorms. Showers.
.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 likely with a chance of
thunderstorms after midnight.
.FRIDAY...Southwest winds around 5 knots. Seas 1 foot or less. A
chance of thunderstorms. Showers.
.FRIDAY NIGHT...South winds around 5 knots, increasing to around
10 knots after midnight. 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.

Winds and seas higher in and near thunderstorms.

$$