Coastal Waters Forecast
Issued by NWS Lake Charles, LA

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FZUS54 KLCH 211530
CWFLCH

Coastal Waters Forecast
National Weather Service Lake Charles LA
1030 AM CDT Thu Mar 21 2024

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.

GMZ400-220415-
1030 AM CDT Thu Mar 21 2024

.SYNOPSIS...
Easterly winds will increase through the morning as a surface low
moves up the Texas gulf coast and across the region. A Small
Craft Advisory has been issued for the coastal waters as well as
the coastal lakes and bays through late tonight. Widespread
showers and thunderstorms will develop this morning and continue
through Friday morning before ending with the passage of a cold
front. Offshore flow will increase Friday night and Saturday
behind the departing cold front and small craft advisories will
likely be issued for this period. Beginning early Sunday, winds
will turn back onshore increase in onshore flow ahead of an
incoming system.

$$

GMZ430-220415-
Sabine Lake-
1030 AM CDT Thu Mar 21 2024

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.REST OF TODAY...East winds 10 to 15 knots, increasing to around 20
knots this afternoon. Lake waters rough. A chance of
thunderstorms. Showers.
.TONIGHT...East winds 15 to 20 knots, becoming southeast 10 to
15 knots after midnight. Lake waters rough. A chance of
thunderstorms. A chance of showers in the evening, then showers
likely after midnight.
.FRIDAY...Northwest winds 5 to 10 knots, increasing to 10 to
15 knots with gusts up to 25 knots in the afternoon. Lake waters
choppy. A chance of showers with a slight chance of thunderstorms
in the morning.
.FRIDAY NIGHT...North winds 15 to 20 knots with gusts up to
25 knots. Lake waters rough.
.SATURDAY...North winds 10 to 15 knots with gusts up to 25 knots,
diminishing to 5 to 10 knots in the afternoon. Lake waters
choppy.
.SATURDAY NIGHT...Northeast winds 5 to 10 knots, becoming east
10 to 15 knots after midnight. Lake waters choppy.
.SUNDAY...Southeast winds 10 to 15 knots. Lake waters choppy.
.SUNDAY NIGHT...Southeast winds around 15 knots. Lake waters
choppy.
.MONDAY...South winds 15 to 20 knots. Lake waters rough. A chance
of thunderstorms. A chance of showers.
.MONDAY NIGHT...Southwest winds 10 to 15 knots, becoming
northwest after midnight. Lake waters choppy. A chance of showers
and thunderstorms, mainly in the evening.

Winds and waves higher in and near thunderstorms.

$$

GMZ432-220415-
Calcasieu Lake-
1030 AM CDT Thu Mar 21 2024

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.REST OF TODAY...East winds 10 to 15 knots, increasing to around 20
knots this afternoon. Lake waters rough. Showers likely with a
slight chance of thunderstorms late this morning, then showers
with a chance of thunderstorms this afternoon.
.TONIGHT...East winds 15 to 20 knots, becoming southeast 10 to
15 knots after midnight. Gusts up to 30 knots. Lake waters rough.
A chance of thunderstorms. A chance of showers in the evening,
then showers likely after midnight.
.FRIDAY...Northwest winds 5 to 10 knots, increasing to 15 to
20 knots with gusts up to 30 knots in the afternoon. Lake waters
rough. A chance of showers and thunderstorms in the morning.
.FRIDAY NIGHT...Northwest winds 15 to 20 knots with gusts up to
30 knots. Lake waters rough.
.SATURDAY...North winds 15 to 20 knots, diminishing to 10 to
15 knots in the afternoon. Gusts up to 30 knots. Lake waters
rough.
.SATURDAY NIGHT...Northeast winds 10 to 15 knots. Lake waters
choppy.
.SUNDAY...Southeast winds 15 to 20 knots. Lake waters rough.
.SUNDAY NIGHT...Southeast winds around 15 knots. Lake waters
choppy.
.MONDAY...South winds 15 to 20 knots. Lake waters rough. A slight
chance of showers and thunderstorms in the morning, then a chance
of showers and thunderstorms in the afternoon.
.MONDAY NIGHT...Southwest winds 15 to 20 knots, becoming
northwest around 10 knots after midnight. Lake waters rough. A
chance of showers and thunderstorms, mainly in the evening.

Winds and waves higher in and near thunderstorms.

$$

GMZ435-220415-
Vermilion and West Cote Blanche Bays-
1030 AM CDT Thu Mar 21 2024

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.REST OF TODAY...East winds 15 to 20 knots. Gusts up to 25 knots
this afternoon. Bay waters rough. A slight chance of
thunderstorms. A chance of showers late this morning, then showers
this afternoon.
.TONIGHT...Southeast winds 10 to 15 knots with gusts up to
20 knots. Bay waters choppy. A chance of thunderstorms. Showers
likely, mainly in the evening.
.FRIDAY...Southwest winds 5 to 10 knots, becoming west in the
afternoon. Bay waters light chop. A chance of showers and
thunderstorms in the morning.
.FRIDAY NIGHT...Northwest winds 10 to 15 knots with gusts up to
25 knots. Bay waters choppy.
.SATURDAY...North winds 10 to 15 knots with gusts up to 25 knots.
Bay waters choppy.
.SATURDAY NIGHT...Northeast winds around 10 knots. Bay waters
light chop.
.SUNDAY...Southeast winds 10 to 15 knots. Bay waters choppy.
.SUNDAY NIGHT...Southeast winds 15 to 20 knots. Bay waters rough.
.MONDAY...Southeast winds 15 to 20 knots. Bay waters rough. A
chance of showers with a slight chance of thunderstorms in the
afternoon.
.MONDAY NIGHT...South winds around 20 knots, becoming west after
midnight. Bay waters rough. A chance of showers and
thunderstorms.

Winds and waves higher in and near thunderstorms.

$$

GMZ436-220415-
Atchafalaya and East Cote Blanche Bays-
1030 AM CDT Thu Mar 21 2024

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.REST OF TODAY...East winds 15 to 20 knots. Bay and inland waters
rough. A slight chance of showers late this morning, then showers
this afternoon. A slight chance of thunderstorms late.
.TONIGHT...Southeast winds 10 to 15 knots with gusts up to
25 knots. Bay and inland waters choppy. A chance of
thunderstorms. Showers likely, mainly in the evening.
.FRIDAY...South winds 5 to 10 knots, becoming west in the
afternoon. Bay and inland waters light chop. A chance of showers
and thunderstorms in the morning.
.FRIDAY NIGHT...Northwest winds 10 to 15 knots with gusts up to
25 knots. Bay and inland waters choppy.
.SATURDAY...North winds 10 to 15 knots with gusts up to 25 knots.
Bay and inland waters choppy.
.SATURDAY NIGHT...Northeast winds around 10 knots. Bay and inland
waters light chop.
.SUNDAY...Southeast winds 10 to 15 knots. Bay and inland waters
choppy.
.SUNDAY NIGHT...Southeast winds 10 to 15 knots, increasing to
15 to 20 knots after midnight. Bay and inland waters rough.
.MONDAY...Southeast winds 15 to 20 knots. Bay and inland waters
rough. A chance of showers with a slight chance of thunderstorms
in the afternoon.
.MONDAY NIGHT...South winds around 20 knots, becoming southwest
after midnight. Bay and inland waters rough. A chance of
thunderstorms. A chance of showers.

Winds and waves higher in and near thunderstorms.

$$

GMZ450-220415-
Coastal waters from Cameron LA to High Island TX out 20 NM-
1030 AM CDT Thu Mar 21 2024

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.REST OF TODAY...East winds 20 to 25 knots. Seas 3 to 4 feet,
building to 4 to 6 feet, occasionally to 8 feet this afternoon. A
chance of thunderstorms. Showers late this morning and early
afternoon, then showers likely late.
.TONIGHT...Southeast winds 20 to 25 knots, becoming south 15 to
20 knots after midnight. Gusts up to 35 knots. Seas 4 to 6 feet,
occasionally to 8 feet. A chance of showers and thunderstorms.
.FRIDAY...Northwest winds 10 to 15 knots with gusts up to
25 knots. Seas 2 to 3 feet. A chance of showers with a slight
chance of thunderstorms in the morning.
.FRIDAY NIGHT...North winds 15 to 20 knots with gusts up to
30 knots. Seas 2 to 3 feet.
.SATURDAY...North winds 15 to 20 knots, diminishing to 10 to
15 knots in the afternoon. Seas 2 to 3 feet.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots, becoming east
10 to 15 knots with gusts up to 20 knots after midnight. Seas
1 foot or less, then around 2 feet after midnight.
.SUNDAY...Southeast winds 15 to 20 knots. Seas 2 to 3 feet.
.SUNDAY NIGHT...Southeast winds 15 to 20 knots. Seas 3 to 5 feet,
occasionally to 6 feet.
.MONDAY...South winds 15 to 20 knots. Seas 3 to 5 feet,
occasionally to 6 feet. A slight chance of showers and
thunderstorms in the morning, then a chance of showers and
thunderstorms in the afternoon.
.MONDAY NIGHT...Southwest winds 15 to 20 knots, becoming
northwest around 10 knots after midnight. Seas 2 to 4 feet. A
chance of showers and thunderstorms, mainly in the evening.

Winds and seas higher in and near thunderstorms.

$$

GMZ452-220415-
Coastal waters from Intracoastal City to Cameron LA out 20 NM-
1030 AM CDT Thu Mar 21 2024

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.REST OF TODAY...East winds 15 to 20 knots, increasing to 20 to
25 knots this afternoon. Seas 2 to 3 feet, building to 3 to
5 feet, occasionally to 6 feet this afternoon. Showers likely
with a slight chance of thunderstorms late this morning, then
showers with a chance of thunderstorms this afternoon.
.TONIGHT...Southeast winds 20 to 25 knots, diminishing to 15 to
20 knots after midnight. Seas 3 to 5 feet, occasionally to
6 feet. A chance of showers and thunderstorms.
.FRIDAY...West winds 10 to 15 knots with gusts up to 25 knots.
Seas 2 to 3 feet. A chance of showers and thunderstorms in the
morning.
.FRIDAY NIGHT...Northwest winds 15 to 20 knots, becoming north
20 to 25 knots after midnight. Seas 2 to 4 feet.
.SATURDAY...North winds 15 to 20 knots with gusts up to 30 knots,
diminishing to 10 to 15 knots with gusts up to 20 knots in the
afternoon. Seas 2 to 4 feet.
.SATURDAY NIGHT...Northeast winds around 10 knots, becoming east
with gusts up to 20 knots after midnight. Seas around 2 feet.
.SUNDAY...Southeast winds around 15 knots. Seas 2 to 3 feet.
.SUNDAY NIGHT...Southeast winds 15 to 20 knots. Seas 3 to 5 feet,
occasionally to 6 feet.
.MONDAY...Southeast winds around 20 knots. Seas 3 to 5 feet,
occasionally to 6 feet. A slight chance of thunderstorms. A
slight chance of showers in the morning, then a chance of showers
in the afternoon.
.MONDAY NIGHT...South winds 15 to 20 knots, becoming northwest
10 to 15 knots after midnight. Seas 3 to 5 feet, occasionally to
6 feet. A chance of thunderstorms. A chance of showers.

Winds and seas higher in and near thunderstorms.

$$

GMZ455-220415-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA out 20 NM-
1030 AM CDT Thu Mar 21 2024

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.REST OF TODAY...East winds 15 to 20 knots with gusts up to
25 knots. Seas 2 to 3 feet. A slight chance of thunderstorms. A
chance of showers late this morning, then showers this afternoon.
.TONIGHT...Southeast winds 15 to 20 knots, diminishing to 10 to
15 knots after midnight. Seas 2 to 3 feet. A chance of
thunderstorms. Showers likely, mainly in the evening.
.FRIDAY...Southwest winds 5 to 10 knots, becoming west in the
afternoon. Seas around 2 feet. A chance of showers and
thunderstorms in the morning.
.FRIDAY NIGHT...Northwest winds 15 to 20 knots with gusts up to
30 knots. Seas 2 to 3 feet.
.SATURDAY...North winds 15 to 20 knots with gusts up to 30 knots,
diminishing to 10 to 15 knots with gusts up to 20 knots in the
afternoon. Seas 2 to 3 feet.
.SATURDAY NIGHT...North winds around 10 knots, becoming northeast
after midnight. Seas 1 foot or less.
.SUNDAY...Southeast winds 10 to 15 knots. Seas around 2 feet.
.SUNDAY NIGHT...Southeast winds 15 to 20 knots. Seas 2 to 4 feet.
.MONDAY...Southeast winds around 20 knots. Seas 2 to 4 feet. A
chance of showers with a slight chance of thunderstorms in the
afternoon.
.MONDAY NIGHT...South winds around 20 knots, becoming southwest
after midnight. Seas 2 to 4 feet. A chance of showers and
thunderstorms.

Winds and seas higher in and near thunderstorms.

$$

GMZ470-220415-
Coastal waters from Cameron LA to High Island TX from 20 to 60 NM-
1030 AM CDT Thu Mar 21 2024

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.REST OF TODAY...East winds 20 to 25 knots with gusts up to
30 knots. Seas 3 to 4 feet, building to 4 to 6 feet, occasionally
to 8 feet this afternoon. Showers with a chance of thunderstorms
late this morning, then showers with thunderstorms likely this
afternoon.
.TONIGHT...Southeast winds 15 to 20 knots, becoming south after
midnight. Gusts up to 30 knots. Seas 5 to 6 feet, occasionally to
8 feet, subsiding to 3 to 5 feet, occasionally to 6 feet after
midnight. A chance of showers and thunderstorms, mainly in the
evening.
.FRIDAY...Northwest winds 10 to 15 knots with gusts up to
20 knots. Seas 3 to 4 feet.
.FRIDAY NIGHT...Northwest winds 15 to 20 knots with gusts up to
30 knots. Seas 3 to 5 feet, occasionally to 6 feet.
.SATURDAY...North winds 15 to 20 knots with gusts up to 30 knots,
diminishing to 10 to 15 knots with gusts up to 20 knots in the
afternoon. Seas 3 to 5 feet, occasionally to 6 feet, subsiding to
2 to 3 feet in the afternoon.
.SATURDAY NIGHT...Northeast winds 5 to 10 knots, becoming east
10 to 15 knots after midnight. Seas around 2 feet.
.SUNDAY...Southeast winds around 15 knots. Seas 2 to 4 feet.
.SUNDAY NIGHT...Southeast winds around 20 knots. Seas 4 to
5 feet, occasionally to 6 feet, building to 5 to 7 feet,
occasionally to 9 feet after midnight.
.MONDAY...South winds 15 to 20 knots. Seas 5 to 7 feet,
occasionally to 9 feet. A slight chance of showers and
thunderstorms in the morning, then a chance of showers and
thunderstorms in the afternoon.
.MONDAY NIGHT...Southwest winds 10 to 15 knots, becoming north
after midnight. Seas 4 to 6 feet, occasionally to 8 feet. A
chance of thunderstorms. A chance of showers.

Winds and seas higher in and near thunderstorms.

$$

GMZ472-220415-
Coastal waters from Intracoastal City to Cameron LA from 20 to
60 NM-
1030 AM CDT Thu Mar 21 2024

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.REST OF TODAY...East winds 15 to 20 knots, increasing to 20 to
25 knots this afternoon. Seas 3 to 4 feet, building to 4 to
6 feet, occasionally to 8 feet this afternoon. Showers with a
slight chance of thunderstorms late this morning, then showers
with a chance of thunderstorms this afternoon.
.TONIGHT...Southeast winds 15 to 20 knots with gusts up to
30 knots. Seas 4 to 6 feet, occasionally to 8 feet. A chance of
showers and thunderstorms, mainly in the evening.
.FRIDAY...West winds 10 to 15 knots with gusts up to 20 knots.
Seas 3 to 4 feet. A slight chance of showers and thunderstorms in
the morning.
.FRIDAY NIGHT...Northwest winds 15 to 20 knots, becoming north
20 to 25 knots after midnight. Seas 3 to 5 feet, occasionally to
6 feet, building to 5 to 6 feet, occasionally to 8 feet after
midnight.
.SATURDAY...North winds 15 to 20 knots, diminishing to 10 to
15 knots in the afternoon. Gusts up to 30 knots. Seas 4 to
6 feet, occasionally to 8 feet, subsiding to 2 to 4 feet in the
afternoon.
.SATURDAY NIGHT...North winds around 10 knots, becoming east with
gusts up to 20 knots after midnight. Seas 2 to 3 feet.
.SUNDAY...Southeast winds around 15 knots. Seas 2 to 4 feet.
.SUNDAY NIGHT...Southeast winds 15 to 20 knots. Seas 3 to 5 feet,
occasionally to 6 feet, building to 5 to 7 feet, occasionally to
9 feet after midnight.
.MONDAY...Southeast winds around 20 knots. Seas 5 to 7 feet,
occasionally to 9 feet. A slight chance of showers in the
morning, then a chance of showers with a slight chance of
thunderstorms in the afternoon.
.MONDAY NIGHT...South winds 15 to 20 knots, becoming northwest
10 to 15 knots after midnight. Seas 5 to 7 feet, occasionally to
9 feet. A chance of showers and thunderstorms.

Winds and seas higher in and near thunderstorms.

$$

GMZ475-220415-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA from 20 to 60 NM-
1030 AM CDT Thu Mar 21 2024

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.REST OF TODAY...East winds 15 to 20 knots with gusts up to
25 knots. Seas 2 to 3 feet, building to 3 to 5 feet, occasionally
to 6 feet this afternoon. Showers likely with a slight chance of
thunderstorms late this morning, then showers with a chance of
thunderstorms this afternoon.
.TONIGHT...Southeast winds 15 to 20 knots with gusts up to
30 knots. Seas 3 to 5 feet, occasionally to 6 feet. A chance of
thunderstorms. Showers, mainly in the evening.
.FRIDAY...Southwest winds 10 to 15 knots, becoming west in the
afternoon. Seas 3 to 4 feet. A chance of showers and
thunderstorms in the morning.
.FRIDAY NIGHT...Northwest winds 15 to 20 knots with gusts up to
30 knots. Seas 4 to 6 feet, occasionally to 8 feet.
.SATURDAY...North winds 15 to 20 knots with gusts up to 30 knots.
Seas 4 to 6 feet, occasionally to 8 feet.
.SATURDAY NIGHT...North winds 10 to 15 knots, becoming northeast
after midnight. Seas 2 to 4 feet.
.SUNDAY...Southeast winds 10 to 15 knots. Seas 2 to 3 feet.
.SUNDAY NIGHT...Southeast winds 15 to 20 knots, increasing to
20 to 25 knots after midnight. Seas 3 to 5 feet, occasionally to
6 feet, building to 5 to 7 feet, occasionally to 9 feet after
midnight.
.MONDAY...Southeast winds 20 to 25 knots. Seas 6 to 8 feet,
occasionally to 10 feet. A chance of showers with a slight chance
of thunderstorms in the afternoon.
.MONDAY NIGHT...South winds around 20 knots, becoming southwest
after midnight. Seas 5 to 7 feet, occasionally to 9 feet. A
chance of showers. A slight chance of thunderstorms in the
evening, then a chance of thunderstorms after midnight.

Winds and seas higher in and near thunderstorms.

$$


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