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FZUS54 KLCH 120831
CWFLCH

Coastal Waters Forecast
National Weather Service Lake Charles LA
331 AM CDT Mon May 12 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.

GMZ400-122130-
331 AM CDT Mon May 12 2025

.SYNOPSIS...

Low pressure inland over the Lower Mississippi Valley, will bring
a light to occasionally modest offshore flow into today before
the low weakens and moves off to the northeast. Before its
passage, a corridor of slightly higher offshore winds is expected
to develop off the central and southeast Louisiana shore from
this morning to the evening hours. Small craft should exercise
caution. By Tuesday, expect southerly flow to return as high
pressure ridging in from the east will replace the low. These
southerly winds will persist through the period, with some
increase on Wednesday as a series of low pressure systems develop
over the Plains.

$$

GMZ430-122130-
Sabine Lake-
331 AM CDT Mon May 12 2025

.TODAY...Northwest winds 5 to 10 knots. Lake waters light chop.
.TONIGHT...Southwest winds 5 to 10 knots. Lake waters light chop.
.TUESDAY...Southwest winds 5 to 10 knots, becoming south 10 to
15 knots with gusts up to 20 knots in the afternoon. Lake waters
choppy.
.TUESDAY NIGHT...South winds 15 to 20 knots. Lake waters rough.
.WEDNESDAY...Southwest winds around 15 knots with gusts up to
20 knots. Lake waters choppy.
.WEDNESDAY NIGHT...South winds 10 to 15 knots with gusts up to
20 knots. Lake waters choppy.
.THURSDAY...South winds 10 to 15 knots. Lake waters choppy.
.THURSDAY NIGHT...South winds 10 to 15 knots. Lake waters choppy.
.FRIDAY...South winds 10 to 15 knots. Lake waters choppy.
.FRIDAY NIGHT...South winds 10 to 15 knots. Lake waters choppy.

$$

GMZ432-122130-
Calcasieu Lake-
331 AM CDT Mon May 12 2025

.TODAY...Northwest winds 5 to 10 knots. Lake waters light chop.
.TONIGHT...Southwest winds 5 to 10 knots. Lake waters light chop.
.TUESDAY...Southwest winds 5 to 10 knots, becoming south 10 to
15 knots with gusts up to 25 knots in the afternoon. Lake waters
choppy.
.TUESDAY NIGHT...South winds 15 to 20 knots with gusts up to
25 knots. Lake waters rough.
.WEDNESDAY...Southwest winds 15 to 20 knots with gusts up to
25 knots. Lake waters rough.
.WEDNESDAY NIGHT...South winds around 15 knots with gusts up to
25 knots. Lake waters choppy.
.THURSDAY...South winds 10 to 15 knots. Lake waters choppy.
.THURSDAY NIGHT...South winds 10 to 15 knots. Lake waters choppy.
.FRIDAY...South winds 10 to 15 knots. Lake waters choppy.
.FRIDAY NIGHT...South winds 10 to 15 knots. Lake waters choppy.

$$

GMZ435-122130-
Vermilion and West Cote Blanche Bays-
331 AM CDT Mon May 12 2025

.TODAY...Northwest winds 5 to 10 knots. Bay waters light chop.
.TONIGHT...West winds 5 to 10 knots. Bay waters light chop.
.TUESDAY...Southwest winds 5 to 10 knots, increasing to 10 to
15 knots in the afternoon. Bay waters choppy.
.TUESDAY NIGHT...South winds 10 to 15 knots, increasing to 15 to
20 knots after midnight. Bay waters rough.
.WEDNESDAY...South winds around 15 knots with gusts up to
20 knots. Bay waters choppy.
.WEDNESDAY NIGHT...South winds around 15 knots with gusts up to
20 knots. Bay waters choppy.
.THURSDAY...South winds 10 to 15 knots. Bay waters choppy.
.THURSDAY NIGHT...South winds 10 to 15 knots. Bay waters choppy.
.FRIDAY...South winds around 10 knots. Bay waters light chop.
.FRIDAY NIGHT...South winds 10 to 15 knots. Bay waters choppy.

$$

GMZ436-122130-
Atchafalaya and East Cote Blanche Bays-
331 AM CDT Mon May 12 2025

.TODAY...Northwest winds 5 to 10 knots. Bay waters light chop. A
slight chance of showers and thunderstorms early this morning.
.TONIGHT...West winds 5 to 10 knots. Bay waters light chop.
.TUESDAY...Southwest winds 5 to 10 knots. Bay waters light chop.
.TUESDAY NIGHT...South winds 10 to 15 knots with gusts up to
20 knots. Bay waters choppy.
.WEDNESDAY...South winds 10 to 15 knots with gusts up to
20 knots. Bay waters choppy.
.WEDNESDAY NIGHT...South winds 10 to 15 knots with gusts up to
20 knots. Bay waters choppy.
.THURSDAY...South winds 10 to 15 knots. Bay waters choppy.
.THURSDAY NIGHT...South winds 10 to 15 knots. Bay waters choppy.
.FRIDAY...South winds around 10 knots. Bay waters light chop.
.FRIDAY NIGHT...South winds around 10 knots. Bay waters light
chop.

Winds and waves higher in and near thunderstorms.

$$

GMZ450-122130-
Coastal waters from Cameron LA to High Island TX out 20 NM-
331 AM CDT Mon May 12 2025

.TODAY...Northwest winds around 10 knots. Seas 1 foot or less.
Wave Detail: Northwest 1 foot at 3 seconds.
.TONIGHT...Southwest winds 10 to 15 knots. Seas around 2 feet.
Wave Detail: Southwest 2 feet at 3 seconds.
.TUESDAY...Southwest winds 10 to 15 knots, becoming south 15 to
20 knots in the afternoon. Seas 2 to 3 feet. Wave Detail:
Southwest 3 feet at 4 seconds.
.TUESDAY NIGHT...South winds 20 to 25 knots. Seas 4 to 6 feet,
occasionally to 8 feet. Wave Detail: South 5 feet at 5 seconds.
.WEDNESDAY...Southwest winds 15 to 20 knots with gusts up to
25 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail:
South 5 feet at 6 seconds.
.WEDNESDAY NIGHT...South winds 15 to 20 knots. Seas 3 to 4 feet.
Wave Detail: South 4 feet at 5 seconds.
.THURSDAY...South winds 15 to 20 knots, diminishing to 10 to
15 knots in the afternoon. Seas 2 to 4 feet.
.THURSDAY NIGHT...South winds around 15 knots. Seas 2 to 4 feet.
.FRIDAY...South winds 10 to 15 knots. Seas 2 to 3 feet.
.FRIDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet.

$$

GMZ452-122130-
Coastal waters from Intracoastal City to Cameron LA out 20 NM-
331 AM CDT Mon May 12 2025

.TODAY...Northwest winds 10 to 15 knots. Seas around 2 feet. Wave
Detail: Northwest 2 feet at 3 seconds.
.TONIGHT...Southwest winds 10 to 15 knots. Seas around 2 feet.
Wave Detail: West 2 feet at 4 seconds.
.TUESDAY...Southwest winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: Southwest 3 feet at 4 seconds.
.TUESDAY NIGHT...South winds 15 to 20 knots, increasing to 20 to
25 knots after midnight. Seas 4 to 6 feet, occasionally to
8 feet. Wave Detail: South 5 feet at 5 seconds.
.WEDNESDAY...South winds 15 to 20 knots with gusts up to
25 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail:
South 5 feet at 6 seconds.
.WEDNESDAY NIGHT...South winds 15 to 20 knots. Seas 3 to 5 feet,
occasionally to 6 feet. Wave Detail: Southwest 4 feet at
6 seconds.
.THURSDAY...South winds 15 to 20 knots, diminishing to 10 to
15 knots in the afternoon. Seas 3 to 5 feet, occasionally to
6 feet.
.THURSDAY NIGHT...Southeast winds 10 to 15 knots, becoming south
15 to 20 knots after midnight. Seas 2 to 4 feet.
.FRIDAY...South winds 10 to 15 knots. Seas 2 to 4 feet.
.FRIDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet.

$$

GMZ455-122130-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA out 20 NM-
331 AM CDT Mon May 12 2025

...SMALL CRAFT EXERCISE CAUTION IN EFFECT THROUGH THIS EVENING...

.TODAY...Northwest winds 10 to 15 knots. Seas around 2 feet. Wave
Detail: West 2 feet at 3 seconds. A slight chance of showers and
thunderstorms early this morning.
.TONIGHT...West winds around 10 knots. Seas around 2 feet. Wave
Detail: West 2 feet at 3 seconds.
.TUESDAY...Southwest winds around 10 knots. Seas around 2 feet.
Wave Detail: Southwest 2 feet at 3 seconds.
.TUESDAY NIGHT...South winds 10 to 15 knots, increasing to 15 to
20 knots after midnight. Seas 2 to 4 feet. Wave Detail: Southwest
3 feet at 4 seconds.
.WEDNESDAY...South winds 15 to 20 knots. Seas 2 to 4 feet. Wave
Detail: South 3 feet at 6 seconds.
.WEDNESDAY NIGHT...South winds around 15 knots with gusts up to
20 knots. Seas 2 to 4 feet. Wave Detail: South 3 feet at
6 seconds and south 2 feet at 3 seconds.
.THURSDAY...South winds 10 to 15 knots, diminishing to 5 to
10 knots in the afternoon. Seas 2 to 4 feet.
.THURSDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet.
.FRIDAY...South winds 10 to 15 knots. Seas 2 to 3 feet.
.FRIDAY NIGHT...South winds 10 to 15 knots. Seas around 2 feet.

Winds and seas higher in and near thunderstorms.

$$

GMZ470-122130-
Coastal waters from Cameron LA to High Island TX from 20 to 60 NM-
331 AM CDT Mon May 12 2025

.TODAY...Northwest winds 10 to 15 knots, becoming west 5 to
10 knots late. Seas around 2 feet. Wave Detail: Northwest 2 feet
at 3 seconds and southeast 1 foot at 6 seconds.
.TONIGHT...Southwest winds 10 to 15 knots. Seas around 2 feet.
Wave Detail: Southwest 2 feet at 4 seconds and southeast 1 foot
at 6 seconds.
.TUESDAY...South winds 15 to 20 knots. Seas 2 to 3 feet. Wave
Detail: South 3 feet at 5 seconds.
.TUESDAY NIGHT...South 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 6 feet, occasionally to 8 feet after
midnight. Wave Detail: South 5 feet at 5 seconds, becoming south
6 feet at 6 seconds.
.WEDNESDAY...South winds around 20 knots, diminishing to around
15 knots in the afternoon. Seas 4 to 6 feet, occasionally to
8 feet. Wave Detail: South 6 feet at 7 seconds.
.WEDNESDAY NIGHT...South winds 15 to 20 knots with gusts up to
25 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail:
South 5 feet at 7 seconds.
.THURSDAY...South winds 15 to 20 knots, diminishing to 10 to
15 knots in the afternoon. Seas 4 to 6 feet, occasionally to
8 feet.
.THURSDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to
5 feet, occasionally to 6 feet.
.FRIDAY...South winds 10 to 15 knots. Seas 3 to 4 feet.
.FRIDAY NIGHT...South winds around 15 knots. Seas 3 to 4 feet.

$$

GMZ472-122130-
Coastal waters from Intracoastal City to Cameron LA from 20 to
60 NM-
331 AM CDT Mon May 12 2025

...SMALL CRAFT EXERCISE CAUTION IN EFFECT THROUGH THIS EVENING...

.TODAY...Northwest winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: West 2 feet at 4 seconds and southeast 1 foot at
6 seconds. A slight chance of showers and thunderstorms early
this morning, then a slight chance of showers late this morning.
.TONIGHT...Southwest winds 10 to 15 knots. Seas around 2 feet.
Wave Detail: West 2 feet at 4 seconds and southeast 1 foot at
6 seconds.
.TUESDAY...Southwest winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: South 3 feet at 6 seconds.
.TUESDAY NIGHT...South winds 15 to 20 knots with gusts up to
25 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail:
Southwest 6 feet at 6 seconds.
.WEDNESDAY...South winds around 20 knots, diminishing to around
15 knots in the afternoon. Seas 5 to 6 feet, occasionally to
8 feet. Wave Detail: South 6 feet at 7 seconds.
.WEDNESDAY NIGHT...South winds around 15 knots, increasing to
around 20 knots after midnight. Seas 4 to 5 feet, occasionally to
6 feet. Wave Detail: South 5 feet at 7 seconds.
.THURSDAY...South winds 15 to 20 knots, diminishing to 10 to
15 knots in the afternoon. Seas 4 to 5 feet, occasionally to
6 feet.
.THURSDAY NIGHT...Southeast winds 10 to 15 knots. Seas around
4 feet.
.FRIDAY...South winds 10 to 15 knots. Seas 3 to 4 feet.
.FRIDAY NIGHT...South winds 10 to 15 knots. Seas 3 to 4 feet.

Winds and seas higher in and near thunderstorms.

$$

GMZ475-122130-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA from 20 to 60 NM-
331 AM CDT Mon May 12 2025

...SMALL CRAFT EXERCISE CAUTION IN EFFECT THROUGH THIS EVENING...

.TODAY...West winds 15 to 20 knots, diminishing to 10 to 15 knots
late. Seas 2 to 4 feet. Wave Detail: West 4 feet at 5 seconds and
southeast 1 foot at 6 seconds. A chance of showers and
thunderstorms this morning, then a chance of showers early this
afternoon.
.TONIGHT...West winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: West 3 feet at 5 seconds and southeast 1 foot at
6 seconds.
.TUESDAY...Southwest winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: Southwest 3 feet at 5 seconds and southeast 1 foot at
6 seconds.
.TUESDAY NIGHT...South winds 15 to 20 knots with gusts up to
25 knots. Seas 2 to 4 feet, building to 4 to 5 feet, occasionally
to 6 feet after midnight. Wave Detail: South 4 feet at 6 seconds,
becoming southwest 5 feet at 6 seconds.
.WEDNESDAY...South winds 15 to 20 knots with gusts up to
25 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail:
South 6 feet at 6 seconds.
.WEDNESDAY NIGHT...South winds 15 to 20 knots with gusts up to
25 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail:
South 5 feet at 7 seconds.
.THURSDAY...South winds 15 to 20 knots, diminishing to 10 to
15 knots in the afternoon. Seas 4 to 5 feet, occasionally to
6 feet.
.THURSDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to
4 feet.
.FRIDAY...South winds 10 to 15 knots. Seas 3 to 4 feet.
.FRIDAY NIGHT...South winds 10 to 15 knots. Seas 3 to 4 feet.

Winds and seas higher in and near thunderstorms.

$$