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FZUS54 KLCH 031821
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Coastal Waters Forecast
National Weather Service Lake Charles LA
1220 PM CST Wed Dec 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-
1220 PM CST Wed Dec 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...

Onshore to prevail ahead of a developing coastal low that will
bring widespread precipitation across the coastal waters tonight
through late Saturday. Strong offshore winds and increasing seas
are expected to develop Thursday in the vicinity of the center of
the coastal low before abating late Friday as the low pushes off
to the east. Drier conditions and light to moderate offshore winds
will prevail from Sunday through early next week.

$$

GMZ430-040700-
Sabine Lake-
1220 PM CST Wed Dec 3 2025

.TONIGHT...East winds 10 to 15 knots. Lake waters choppy. A
chance of thunderstorms this evening. Showers. Thunderstorms
likely after midnight.
.THURSDAY...Northeast winds around 15 knots with gusts up to
20 knots. Lake waters choppy. Showers with a chance of
thunderstorms.
.THURSDAY NIGHT...North winds 15 to 20 knots, diminishing to
10 to 15 knots after midnight. Lake waters rough. Showers likely
with a slight chance of thunderstorms in the evening, then a
chance of showers after midnight.
.FRIDAY...North winds 10 to 15 knots, diminishing to 5 to
10 knots in the afternoon. Lake waters choppy. Showers likely,
mainly in the morning.
.FRIDAY NIGHT...Northeast winds 5 to 10 knots. Lake waters light
chop. A chance of showers.
.SATURDAY...Northeast winds 5 to 10 knots. Lake waters light
chop. A chance of showers, mainly in the morning.
.SATURDAY NIGHT...East winds around 5 knots, becoming north after
midnight. Lake waters smooth.
.SUNDAY...North winds 5 to 10 knots. Lake waters light chop.
.SUNDAY NIGHT...North winds 5 to 10 knots, increasing to 10 to
15 knots after midnight. Lake waters choppy.
.MONDAY...North winds 10 to 15 knots, diminishing to 5 to
10 knots in the afternoon. Lake waters choppy.
.MONDAY NIGHT...Northeast winds around 5 knots. Lake waters
smooth.

Winds and waves higher in and near thunderstorms.

$$

GMZ432-040700-
Calcasieu Lake-
1220 PM CST Wed Dec 3 2025

.TONIGHT...East winds 10 to 15 knots with gusts up to 20 knots.
Lake waters choppy. Showers likely this evening. A chance of
thunderstorms. Showers after midnight.
.THURSDAY...Northeast winds 15 to 20 knots. Lake waters rough.
Showers with a chance of thunderstorms.
.THURSDAY NIGHT...Northeast winds 15 to 20 knots, becoming north
10 to 15 knots after midnight. Lake waters rough. Showers likely
with a slight chance of thunderstorms in the evening, then a
chance of showers after midnight.
.FRIDAY...North winds 10 to 15 knots. Lake waters choppy. Showers
likely, mainly in the morning.
.FRIDAY NIGHT...Northeast winds 5 to 10 knots. Lake waters light
chop. A chance of showers.
.SATURDAY...Northeast winds 5 to 10 knots. Lake waters light
chop. A chance of showers. A slight chance of thunderstorms in
the afternoon.
.SATURDAY NIGHT...East winds 5 to 10 knots, becoming north after
midnight. Lake waters light chop. A slight chance of showers in
the evening.
.SUNDAY...North winds 5 to 10 knots. Lake waters light chop.
.SUNDAY NIGHT...North winds 10 to 15 knots. Lake waters choppy.
.MONDAY...North winds 10 to 15 knots, diminishing to 5 to
10 knots in the afternoon. Lake waters choppy.
.MONDAY NIGHT...Northeast 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-
1220 PM CST Wed Dec 3 2025

.TONIGHT...East winds 10 to 15 knots. Bay waters choppy. A chance
of showers with a slight chance of thunderstorms this evening,
then showers with a chance of thunderstorms after midnight.
.THURSDAY...Northeast winds around 15 knots with gusts up to
20 knots. Bay waters choppy. A chance of thunderstorms. Showers.
.THURSDAY NIGHT...Northeast winds 10 to 15 knots. Bay waters
choppy. A slight chance of thunderstorms. Showers.
.FRIDAY...North winds 10 to 15 knots, diminishing to 5 to
10 knots in the afternoon. Bay waters choppy. A slight chance of
thunderstorms in the morning. Showers.
.FRIDAY NIGHT...Northeast winds 5 to 10 knots. Bay waters light
chop. Showers likely, mainly in the evening.
.SATURDAY...Northeast winds 5 to 10 knots. Bay waters light chop.
A chance of showers with a slight chance of thunderstorms.
.SATURDAY NIGHT...Northeast winds around 5 knots. Bay waters
smooth. A chance of showers in the evening, then a slight chance
of showers and thunderstorms after midnight.
.SUNDAY...North winds 5 to 10 knots. Bay waters light chop.
.SUNDAY NIGHT...North winds 5 to 10 knots, increasing to 10 to
15 knots after midnight. Bay waters choppy.
.MONDAY...North winds 10 to 15 knots, diminishing to 5 to
10 knots in the afternoon. Bay waters choppy.
.MONDAY NIGHT...Northeast winds 5 to 10 knots. Bay waters light
chop.

Winds and waves higher in and near thunderstorms.

$$

GMZ436-040700-
Atchafalaya and East Cote Blanche Bays-
1220 PM CST Wed Dec 3 2025

.TONIGHT...East winds 5 to 10 knots, increasing to 10 to 15 knots
late. Bay waters choppy. A chance of showers late this evening
and early morning. A slight chance of thunderstorms after
midnight, then showers with a chance of thunderstorms late.
.THURSDAY...East winds 10 to 15 knots with gusts up to 20 knots.
Bay waters choppy. A chance of thunderstorms. Showers.
.THURSDAY NIGHT...Northeast winds 10 to 15 knots, diminishing to
5 to 10 knots after midnight. Bay waters choppy. Showers with a
chance of thunderstorms in the evening, then showers with a
slight chance of thunderstorms after midnight.
.FRIDAY...North winds 5 to 10 knots. Bay waters light chop.
Showers with a slight chance of thunderstorms.
.FRIDAY NIGHT...Northeast winds 5 to 10 knots. Bay waters light
chop. Showers likely.
.SATURDAY...Northeast winds 5 to 10 knots. Bay waters light chop.
A slight chance of thunderstorms. Showers likely.
.SATURDAY NIGHT...Northeast winds around 5 knots. Bay waters
smooth. A chance of showers with a slight chance of
thunderstorms.
.SUNDAY...North winds 5 to 10 knots. Bay waters light chop.
.SUNDAY NIGHT...North winds 5 to 10 knots. Bay waters light chop.
.MONDAY...North winds 10 to 15 knots, diminishing to 5 to
10 knots in the afternoon. Bay waters choppy.
.MONDAY NIGHT...Northeast winds around 5 knots. Bay waters
smooth.

Winds and waves higher in and near thunderstorms.

$$

GMZ450-040700-
Coastal waters from Cameron LA to High Island TX out 20 NM-
1220 PM CST Wed Dec 3 2025

.TONIGHT...Southeast winds 15 to 20 knots. Seas 2 to 4 feet. Wave
Detail: Southeast 3 feet at 5 seconds. A chance of thunderstorms.
A chance of showers early this evening, then showers late this
evening and overnight.
.THURSDAY...Northeast winds 15 to 20 knots. Seas 2 to 4 feet.
Wave Detail: East 3 feet at 5 seconds. Showers with a chance of
thunderstorms.
.THURSDAY NIGHT...North winds 15 to 20 knots. Seas 2 to 4 feet.
Wave Detail: Northeast 3 feet at 4 seconds and southeast 2 feet
at 6 seconds. A slight chance of thunderstorms. Showers.
.FRIDAY...North winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: North 3 feet at 4 seconds and south 1 foot at 6 seconds.
Showers likely.
.FRIDAY NIGHT...Northeast winds 5 to 10 knots. Seas around
2 feet. Wave Detail: Northeast 1 foot at 3 seconds and south
1 foot at 6 seconds. A chance of showers.
.SATURDAY...Northeast winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: Northeast 2 feet at 3 seconds and south 1 foot at
5 seconds. A chance of showers. A slight chance of thunderstorms
in the afternoon.
.SATURDAY NIGHT...East winds 5 to 10 knots, becoming north after
midnight. Seas around 2 feet. A slight chance of showers in the
evening.
.SUNDAY...North winds around 10 knots. Seas around 2 feet.
.SUNDAY NIGHT...North winds 10 to 15 knots, increasing to 15 to
20 knots after midnight. Seas 2 to 3 feet.
.MONDAY...North winds 15 to 20 knots, diminishing to 10 to
15 knots in the afternoon. Seas 2 to 3 feet.
.MONDAY NIGHT...Northeast winds around 10 knots. Seas 1 foot or
less.

Winds and seas higher in and near thunderstorms.

$$

GMZ452-040700-
Coastal waters from Intracoastal City to Cameron LA out 20 NM-
1220 PM CST Wed Dec 3 2025

.TONIGHT...Southeast winds 15 to 20 knots. Seas 2 to 4 feet. Wave
Detail: Southeast 4 feet at 5 seconds. Showers likely this
evening. A chance of thunderstorms. Showers after midnight.
.THURSDAY...Northeast winds 15 to 20 knots. Seas 2 to 4 feet.
Wave Detail: Southeast 3 feet at 5 seconds. A chance of
thunderstorms. Showers.
.THURSDAY NIGHT...Northeast winds 15 to 20 knots. Seas 2 to
4 feet. Wave Detail: Northeast 3 feet at 4 seconds and southeast
2 feet at 6 seconds. A slight chance of thunderstorms. Showers.
.FRIDAY...North winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: North 2 feet at 3 seconds and south 1 foot at 6 seconds.
Showers with a slight chance of thunderstorms in the morning,
then showers likely in the afternoon.
.FRIDAY NIGHT...Northeast winds around 10 knots. Seas around
2 feet. Wave Detail: Northeast 2 feet at 3 seconds and south
1 foot at 6 seconds. Showers likely.
.SATURDAY...Northeast winds around 10 knots. Seas around 2 feet.
Wave Detail: Northeast 2 feet at 3 seconds and south 1 foot at
5 seconds. A chance of showers. A slight chance of thunderstorms
in the afternoon.
.SATURDAY NIGHT...East winds 5 to 10 knots, becoming northeast
after midnight. Seas around 2 feet. A chance of showers in the
evening, then a slight chance of showers and thunderstorms after
midnight.
.SUNDAY...North winds around 10 knots. Seas around 2 feet.
.SUNDAY NIGHT...North winds 10 to 15 knots, increasing to 15 to
20 knots after midnight. Seas 2 to 3 feet.
.MONDAY...North winds 15 to 20 knots, diminishing to 10 to
15 knots in the afternoon. Seas 2 to 3 feet.
.MONDAY NIGHT...Northeast winds around 10 knots. Seas around
2 feet in the evening, then 1 foot or less.

Winds and seas higher in and near thunderstorms.

$$

GMZ455-040700-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA out 20 NM-
1220 PM CST Wed Dec 3 2025

.TONIGHT...East winds 10 to 15 knots. Seas around 2 feet. Wave
Detail: Southeast 2 feet at 3 seconds. A slight chance of showers
early this evening, then showers with a slight chance of
thunderstorms late this evening and overnight.
.THURSDAY...East winds around 15 knots with gusts up to 20 knots.
Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 4 seconds. A
chance of thunderstorms. Showers.
.THURSDAY NIGHT...Northeast winds 10 to 15 knots. Seas 2 to
3 feet. Wave Detail: East 2 feet at 3 seconds and south 1 foot at
5 seconds. Showers. A chance of thunderstorms, mainly in the
evening.
.FRIDAY...North winds 10 to 15 knots. Seas around 2 feet. Wave
Detail: North 2 feet at 3 seconds. A slight chance of
thunderstorms in the morning. Showers.
.FRIDAY NIGHT...Northeast winds 5 to 10 knots. Seas 1 to 2 feet
in the evening, then 1 foot or less. Wave Detail: Northeast
1 foot at 2 seconds. Showers likely.
.SATURDAY...Northeast winds 5 to 10 knots. Seas around 2 feet in
the morning, then 1 foot or less. Wave Detail: Northeast 1 foot
at 2 seconds. A slight chance of thunderstorms. Showers likely.
.SATURDAY NIGHT...Northeast winds 5 to 10 knots. Seas 1 foot or
less. A chance of showers with a slight chance of thunderstorms.
.SUNDAY...North winds 5 to 10 knots. Seas 1 foot or less.
.SUNDAY NIGHT...North winds 5 to 10 knots, increasing to 10 to
15 knots after midnight. Seas around 2 feet.
.MONDAY...North winds 10 to 15 knots. Seas around 2 feet.
.MONDAY NIGHT...Northeast winds 5 to 10 knots. Seas 1 foot or
less.

Winds and seas higher in and near thunderstorms.

$$

GMZ470-040700-
Coastal waters from Cameron LA to High Island TX from 20 to 60 NM-
1220 PM CST Wed Dec 3 2025

.TONIGHT...Southeast winds 15 to 20 knots. Seas 3 to 4 feet. Wave
Detail: Southeast 4 feet at 5 seconds. A chance of thunderstorms.
A chance of showers early this evening, then showers late this
evening and overnight.
.THURSDAY...Northeast winds 15 to 20 knots. Seas 3 to 5 feet,
occasionally to 6 feet. Wave Detail: Northeast 4 feet at
5 seconds and southeast 4 feet at 6 seconds. Showers with a
chance of thunderstorms.
.THURSDAY NIGHT...North winds 15 to 20 knots. Seas 3 to 5 feet,
occasionally to 6 feet. Wave Detail: East 4 feet at 6 seconds.
Showers with a chance of thunderstorms in the evening, then
showers likely with a slight chance of thunderstorms after
midnight.
.FRIDAY...North winds 10 to 15 knots. Seas 2 to 4 feet. Wave
Detail: North 3 feet at 4 seconds and south 2 feet at 6 seconds.
Showers with a slight chance of thunderstorms in the morning,
then showers likely in the afternoon.
.FRIDAY NIGHT...Northeast winds 5 to 10 knots. Seas 2 to 3 feet.
Wave Detail: Northeast 2 feet at 4 seconds and south 2 feet at
6 seconds. Showers likely.
.SATURDAY...Northeast winds around 10 knots. Seas around 2 feet.
Wave Detail: Northeast 2 feet at 4 seconds and south 1 foot at
6 seconds. A chance of showers. A chance of thunderstorms in the
afternoon.
.SATURDAY NIGHT...Northeast winds 5 to 10 knots, becoming north
after midnight. Seas around 2 feet. A chance of showers with a
slight chance of thunderstorms in the evening, then a slight
chance of showers after midnight.
.SUNDAY...North winds 10 to 15 knots. Seas around 2 feet.
.SUNDAY NIGHT...North winds 10 to 15 knots, increasing to 15 to
20 knots after midnight. Seas 2 to 4 feet.
.MONDAY...North winds 15 to 20 knots, diminishing to 10 to
15 knots in the afternoon. Seas 2 to 4 feet.
.MONDAY NIGHT...Northeast winds around 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-
1220 PM CST Wed Dec 3 2025

.TONIGHT...Southeast winds 15 to 20 knots. Seas 2 to 4 feet. Wave
Detail: Southeast 4 feet at 5 seconds. A chance of showers with a
slight chance of thunderstorms early this evening, then showers
with a chance of thunderstorms late this evening and overnight.
.THURSDAY...East winds 15 to 20 knots. Seas around 4 feet. Wave
Detail: East 4 feet at 5 seconds. A chance of thunderstorms.
Showers.
.THURSDAY NIGHT...Northeast winds 15 to 20 knots. Seas 3 to
4 feet. Wave Detail: East 3 feet at 5 seconds. Showers with a
chance of thunderstorms in the evening, then showers with a
slight chance of thunderstorms after midnight.
.FRIDAY...North winds 10 to 15 knots. Seas 2 to 4 feet. Wave
Detail: North 3 feet at 4 seconds and south 2 feet at 6 seconds.
A slight chance of thunderstorms in the morning. Showers.
.FRIDAY NIGHT...Northeast winds around 10 knots. Seas 2 to
3 feet. Wave Detail: North 2 feet at 4 seconds and southeast
2 feet at 6 seconds. Showers likely.
.SATURDAY...Northeast winds around 10 knots. Seas 2 to 3 feet.
Wave Detail: Northeast 2 feet at 4 seconds and south 2 feet at
6 seconds. Showers likely. A chance of thunderstorms in the
afternoon.
.SATURDAY NIGHT...East winds 5 to 10 knots, becoming north after
midnight. Seas around 2 feet. A slight chance of thunderstorms. A
chance of showers, mainly in the evening.
.SUNDAY...North winds 10 to 15 knots. Seas around 2 feet. A
slight chance of showers in the morning.
.SUNDAY NIGHT...North winds 10 to 15 knots, increasing to 15 to
20 knots after midnight. Seas 2 to 4 feet.
.MONDAY...North winds 15 to 20 knots, diminishing to 10 to
15 knots in the afternoon. Seas 2 to 4 feet.
.MONDAY NIGHT...Northeast winds 10 to 15 knots. Seas 2 to 3 feet.

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-
1220 PM CST Wed Dec 3 2025

.TONIGHT...Southeast winds 15 to 20 knots. Seas 2 to 4 feet. Wave
Detail: Southeast 4 feet at 5 seconds. A slight chance of showers
early this evening, then showers likely with a slight chance of
thunderstorms late this evening and overnight.
.THURSDAY...Southeast winds 15 to 20 knots, becoming east in the
afternoon. Seas 3 to 4 feet. Wave Detail: Southeast 4 feet at
5 seconds. A chance of thunderstorms. Showers.
.THURSDAY NIGHT...East winds 10 to 15 knots, becoming north after
midnight. Seas around 3 feet. Wave Detail: Southeast 3 feet at
5 seconds and northeast 2 feet at 4 seconds. Showers. A chance of
thunderstorms, mainly in the evening.
.FRIDAY...North winds 10 to 15 knots. Seas 2 to 4 feet. Wave
Detail: North 3 feet at 4 seconds and southwest 2 feet at
6 seconds. A slight chance of thunderstorms in the morning.
Showers.
.FRIDAY NIGHT...Northeast winds 10 to 15 knots. Seas 2 to 3 feet.
Wave Detail: North 2 feet at 4 seconds and south 2 feet at
6 seconds. Showers in the evening, then showers likely with a
slight chance of thunderstorms after midnight.
.SATURDAY...Northeast winds 10 to 15 knots. Seas 2 to 3 feet.
Wave Detail: Northeast 2 feet at 4 seconds and south 2 feet at
5 seconds. Showers with a slight chance of thunderstorms in the
morning, then showers likely with a chance of thunderstorms in
the afternoon.
.SATURDAY NIGHT...East winds 10 to 15 knots, becoming north after
midnight. Seas 2 to 3 feet. A chance of showers. A chance of
thunderstorms, mainly in the evening.
.SUNDAY...North winds 10 to 15 knots. Seas 2 to 3 feet. A slight
chance of showers in the morning.
.SUNDAY NIGHT...North winds 10 to 15 knots, increasing to 15 to
20 knots after midnight. Seas 2 to 4 feet. A slight chance of
showers in the evening.
.MONDAY...North winds 15 to 20 knots. Seas 2 to 4 feet.
.MONDAY NIGHT...Northeast winds 10 to 15 knots. Seas 2 to 3 feet.

Winds and seas higher in and near thunderstorms.

$$