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FZUS54 KLCH 140809
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Coastal Waters Forecast
National Weather Service Lake Charles LA
309 AM CDT Mon Sep 14 2026

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.

GMZ400-142100-
309 AM CDT Mon Sep 14 2026

.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 over the northern Gulf will keep conditions calm,
with seas around 1 foot and winds between 5 and 10 knots.


Near midweek, a disturbance will begin to develop over the
northeast Gulf. Models are showing a decent fetch along the coast
with wave heights up to 9 feet on Wednesday night and Thursday.
Winds will be 20 to 25 knots from the east for the second half of
the week. Mariners should expect Small Craft Advisories or similar
headlines starting on Wednesday.

$$

GMZ430-142100-
Sabine Lake-
309 AM CDT Mon Sep 14 2026

.TODAY...Light and variable winds, becoming south 5 to 10 knots.
Lake waters light chop. A slight chance of showers and
thunderstorms this afternoon.
.TONIGHT...South winds around 5 knots. Lake waters smooth.
.TUESDAY...Southeast winds around 5 knots. Lake waters smooth.
.TUESDAY NIGHT...Southeast winds around 5 knots. Lake waters
smooth.
.WEDNESDAY...East winds 5 to 10 knots. Lake waters light chop. A
slight chance of showers and thunderstorms in the afternoon.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Lake waters light
chop. A slight chance of thunderstorms in the evening. A slight
chance of showers.
.THURSDAY...East winds 10 to 15 knots, diminishing to 5 to
10 knots in the afternoon. Lake waters choppy. A slight chance of
showers and thunderstorms in the morning.
.THURSDAY NIGHT...East winds around 5 knots. Lake waters smooth.
.FRIDAY...Northeast winds 5 to 10 knots, becoming east in the
afternoon. Lake waters light chop.
.FRIDAY NIGHT...Southeast winds around 5 knots, becoming east
after midnight. Lake waters smooth.

Winds and waves higher in and near thunderstorms.

$$

GMZ432-142100-
Calcasieu Lake-
309 AM CDT Mon Sep 14 2026

.TODAY...South winds around 5 knots, increasing to 5 to 10 knots
late. Lake waters light chop.
.TONIGHT...South winds around 5 knots. Lake waters smooth.
.TUESDAY...Southeast winds around 5 knots. Lake waters smooth. A
slight chance of showers and thunderstorms in the afternoon.
.TUESDAY NIGHT...Southeast winds around 5 knots. Lake waters
smooth.
.WEDNESDAY...East winds 5 to 10 knots. Lake waters light chop. A
chance of showers and thunderstorms in the afternoon.
.WEDNESDAY NIGHT...East winds around 10 knots with gusts up to
20 knots. Lake waters light chop. A slight chance of
thunderstorms in the evening. A slight chance of showers.
.THURSDAY...East winds 10 to 15 knots. Lake waters choppy.
.THURSDAY NIGHT...East winds 5 to 10 knots. Lake waters light
chop.
.FRIDAY...Northeast winds 5 to 10 knots, becoming east in the
afternoon. Lake waters light chop.
.FRIDAY NIGHT...East winds around 5 knots. Lake waters smooth.

Winds and waves higher in and near thunderstorms.

$$

GMZ435-142100-
Vermilion and West Cote Blanche Bays-
309 AM CDT Mon Sep 14 2026

.TODAY...Light and variable winds, becoming south around 5 knots
this afternoon. Bay waters smooth.
.TONIGHT...South winds around 5 knots. Bay waters smooth.
.TUESDAY...Northeast winds around 5 knots, becoming southeast in
the afternoon. Bay waters smooth.
.TUESDAY NIGHT...Southeast winds around 5 knots, becoming east
after midnight. Bay waters light chop.
.WEDNESDAY...East winds 10 to 15 knots. Bay waters choppy. A
slight chance of showers and thunderstorms in the morning, then
showers likely with a chance of thunderstorms in the afternoon.
.WEDNESDAY NIGHT...East winds 15 to 20 knots, diminishing to
10 to 15 knots after midnight. Bay waters rough.
.THURSDAY...East winds 10 to 15 knots. Bay waters choppy.
.THURSDAY NIGHT...East winds 10 to 15 knots. Bay waters choppy.
.FRIDAY...Northeast winds 10 to 15 knots, becoming east 5 to
10 knots in the afternoon. Bay waters choppy. A slight chance of
showers and thunderstorms in the afternoon.
.FRIDAY NIGHT...East winds 5 to 10 knots. Bay waters light chop.

Winds and waves higher in and near thunderstorms.

$$

GMZ436-142100-
Atchafalaya and East Cote Blanche Bays-
309 AM CDT Mon Sep 14 2026

.TODAY...Light and variable winds, becoming north around 5 knots
late this morning, then becoming southwest this afternoon. Bay
waters smooth. A slight chance of showers and thunderstorms late.
.TONIGHT...South winds around 5 knots. Bay waters smooth.
.TUESDAY...Northeast winds around 5 knots, becoming south around
5 knots in the afternoon. Bay waters smooth. A slight chance of
showers and thunderstorms in the afternoon.
.TUESDAY NIGHT...Southeast winds around 5 knots, becoming east
after midnight. Bay waters light chop. A chance of showers and
thunderstorms in the evening.
.WEDNESDAY...East winds 10 to 15 knots. Bay waters choppy. A
chance of showers with a slight chance of thunderstorms in the
morning, then showers with a chance of thunderstorms in the
afternoon.
.WEDNESDAY NIGHT...East winds 10 to 15 knots with gusts up to
20 knots. Bay waters choppy. A slight chance of showers and
thunderstorms in the evening.
.THURSDAY...East winds 10 to 15 knots. Bay waters choppy.
.THURSDAY NIGHT...East winds 10 to 15 knots, diminishing to 5 to
10 knots after midnight. Bay waters choppy.
.FRIDAY...Northeast winds 5 to 10 knots. Bay waters light chop. A
chance of showers and thunderstorms in the afternoon.
.FRIDAY NIGHT...East 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.

$$

GMZ450-142100-
Coastal waters from Cameron LA to High Island TX out 20 NM-
309 AM CDT Mon Sep 14 2026

.TODAY...South winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: South 2 feet at 5 seconds.
.TONIGHT...South winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: South 2 feet at 5 seconds.
.TUESDAY...Southeast winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: South 2 feet at 5 seconds.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet. Wave Detail: Southeast 2 feet at 4 seconds.
.WEDNESDAY...East winds 10 to 15 knots with gusts up to 20 knots.
Seas 2 to 3 feet. Wave Detail: East 2 feet at 4 seconds. A chance
of showers with a slight chance of thunderstorms.
.WEDNESDAY NIGHT...East winds 15 to 20 knots with gusts up to
25 knots. Seas 2 to 4 feet. Wave Detail: Southeast 3 feet at
5 seconds. Showers likely with a slight chance of thunderstorms.
.THURSDAY...East winds 15 to 20 knots. Seas 2 to 4 feet. A slight
chance of thunderstorms. A chance of showers, mainly in the
morning.
.THURSDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 4 feet.
.FRIDAY...East winds 10 to 15 knots. Seas 2 to 3 feet.
.FRIDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet. A
slight chance of showers after midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ452-142100-
Coastal waters from Intracoastal City to Cameron LA out 20 NM-
309 AM CDT Mon Sep 14 2026

.TODAY...South winds around 5 knots. Seas 1 foot or less. Wave
Detail: South 1 foot at 5 seconds.
.TONIGHT...South 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 south 2 feet at 6 seconds.
.TUESDAY...Southeast winds around 5 knots. Seas 1 foot or less.
Wave Detail: South 1 foot at 5 seconds.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet. Wave Detail: Southeast 1 foot at 4 seconds.
.WEDNESDAY...East winds 10 to 15 knots, increasing to 15 to
20 knots in the afternoon. Seas 2 to 3 feet. Wave Detail: East
3 feet at 4 seconds. A chance of showers with a slight chance of
thunderstorms in the morning, then showers likely with a chance
of thunderstorms in the afternoon.
.WEDNESDAY NIGHT...East winds 20 to 25 knots, diminishing to
15 to 20 knots after midnight. Seas 3 to 5 feet, occasionally to
6 feet. Wave Detail: Southeast 4 feet at 5 seconds. A chance of
showers with a slight chance of thunderstorms.
.THURSDAY...East winds 15 to 20 knots. Seas 2 to 4 feet. A slight
chance of showers and thunderstorms in the morning.
.THURSDAY NIGHT...East winds 15 to 20 knots. Seas 2 to 4 feet.
.FRIDAY...East winds 10 to 15 knots. Seas 2 to 3 feet.
.FRIDAY NIGHT...East winds 10 to 15 knots, diminishing to 5 to
10 knots after midnight. Seas around 2 feet. A slight chance of
showers and thunderstorms after midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ455-142100-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA out 20 NM-
309 AM CDT Mon Sep 14 2026

.TODAY...Light and variable winds, becoming southeast around
5 knots early this afternoon, then becoming southwest late. Seas
1 foot or less. Wave Detail: South 1 foot at 5 seconds.
.TONIGHT...South winds around 5 knots. Seas 1 foot or less. Wave
Detail: South 1 foot at 5 seconds.
.TUESDAY...Northeast winds around 5 knots, becoming east around
5 knots in the afternoon. Seas 1 foot or less. Wave Detail: South
1 foot at 4 seconds.
.TUESDAY NIGHT...East winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: Southeast 1 foot at 3 seconds. A slight chance of
showers and thunderstorms after midnight.
.WEDNESDAY...Northeast winds 10 to 15 knots, becoming east 15 to
20 knots in the afternoon. Seas 2 to 3 feet. Wave Detail: East
2 feet at 3 seconds. A chance of thunderstorms. Showers.
.WEDNESDAY NIGHT...East winds 15 to 20 knots with gusts up to
25 knots. Seas 2 to 4 feet. Wave Detail: East 3 feet at
4 seconds. A chance of showers with a slight chance of
thunderstorms in the evening, then a slight chance of showers
after midnight.
.THURSDAY...East winds 15 to 20 knots. Seas 2 to 3 feet. A slight
chance of showers.
.THURSDAY NIGHT...East winds 15 to 20 knots, diminishing to 10 to
15 knots after midnight. Seas 2 to 3 feet.
.FRIDAY...Northeast winds 10 to 15 knots. Seas 2 to 3 feet,
subsiding to 1 to 2 feet in the afternoon. A slight chance of
showers in the morning, then a chance of showers with a slight
chance of thunderstorms in the afternoon.
.FRIDAY NIGHT...East winds 10 to 15 knots, diminishing to 5 to
10 knots after midnight. Seas around 2 feet. 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.

$$

GMZ470-142100-
Coastal waters from Cameron LA to High Island TX from 20 to 60 NM-
309 AM CDT Mon Sep 14 2026

.TODAY...South winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: South 2 feet at 6 seconds.
.TONIGHT...South winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: South 2 feet at 6 seconds.
.TUESDAY...Southeast winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: South 2 feet at 6 seconds.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet. Wave Detail: Southeast 2 feet at 6 seconds.
.WEDNESDAY...East winds 10 to 15 knots with gusts up to 20 knots.
Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 5 seconds. A
chance of showers with a slight chance of thunderstorms.
.WEDNESDAY NIGHT...East winds 15 to 20 knots with gusts up to
25 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail:
East 4 feet at 6 seconds. Showers likely with a slight chance of
thunderstorms.
.THURSDAY...East winds 15 to 20 knots. Seas 4 to 6 feet,
occasionally to 8 feet. A slight chance of thunderstorms. A
chance of showers, mainly in the morning.
.THURSDAY NIGHT...East winds 15 to 20 knots. Seas 4 to 6 feet,
occasionally to 8 feet.
.FRIDAY...East winds 10 to 15 knots. Seas 3 to 5 feet,
occasionally to 6 feet. A slight chance of showers in the
afternoon.
.FRIDAY NIGHT...East winds 10 to 15 knots, diminishing to 5 to
10 knots after midnight. Seas 2 to 4 feet. 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.

$$

GMZ472-142100-
Coastal waters from Intracoastal City to Cameron LA from 20 to
60 NM-
309 AM CDT Mon Sep 14 2026

.TODAY...Southeast winds around 5 knots. Seas around 2 feet. Wave
Detail: South 2 feet at 6 seconds.
.TONIGHT...South winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: South 2 feet at 6 seconds.
.TUESDAY...East winds around 5 knots. Seas around 2 feet. Wave
Detail: South 2 feet at 6 seconds.
.TUESDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: Southeast 2 feet at 6 seconds.
.WEDNESDAY...East winds 10 to 15 knots, increasing to 15 to
20 knots in the afternoon. Seas 2 to 4 feet. Wave Detail:
Southeast 4 feet at 5 seconds. A chance of thunderstorms. A
chance of showers in the morning, then showers likely in the
afternoon.
.WEDNESDAY NIGHT...East winds 20 to 25 knots. Seas 5 to 7 feet,
occasionally to 9 feet. Wave Detail: East 6 feet at 6 seconds. A
slight chance of thunderstorms. Showers likely, mainly in the
evening.
.THURSDAY...East winds 15 to 20 knots. Seas 4 to 6 feet,
occasionally to 8 feet. A slight chance of thunderstorms. A
chance of showers, mainly in the morning.
.THURSDAY NIGHT...East winds 20 to 25 knots, diminishing to 15 to
20 knots after midnight. Seas 5 to 7 feet, occasionally to
9 feet.
.FRIDAY...East winds 15 to 20 knots, becoming northeast 10 to
15 knots in the afternoon. Seas 3 to 5 feet, occasionally to
6 feet. A slight chance of showers. A slight chance of
thunderstorms in the afternoon.
.FRIDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 4 feet. 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.

$$

GMZ475-142100-
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA from 20 to 60 NM-
309 AM CDT Mon Sep 14 2026

.TODAY...South winds around 5 knots, becoming east late this
morning and afternoon. Seas 1 foot or less. Wave Detail: South
1 foot at 5 seconds.
.TONIGHT...Southeast winds around 5 knots. Seas 1 foot or less.
Wave Detail: South 1 foot at 6 seconds.
.TUESDAY...Northeast winds around 5 knots, becoming east in the
afternoon. Seas 1 foot or less, then around 2 feet in the
afternoon. Wave Detail: South 1 foot at 6 seconds.
.TUESDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: Southeast 2 feet at 5 seconds. A slight chance of
showers after midnight.
.WEDNESDAY...East winds 15 to 20 knots, increasing to 20 to
25 knots in the afternoon. Seas 2 to 3 feet, building to 3 to
5 feet, occasionally to 6 feet in the afternoon. Wave Detail:
East 3 feet at 4 seconds, becoming east 5 feet at 5 seconds. A
chance of thunderstorms. Showers.
.WEDNESDAY NIGHT...East winds 20 to 25 knots with gusts up to
30 knots. Seas 5 to 8 feet, occasionally to 10 feet. Wave Detail:
East 8 feet at 7 seconds. A slight chance of thunderstorms in the
evening. A chance of showers.
.THURSDAY...East winds 20 to 25 knots. Seas 5 to 7 feet,
occasionally to 9 feet. A chance of showers, mainly in the
morning.
.THURSDAY NIGHT...East winds 20 to 25 knots. Seas 5 to 8 feet,
occasionally to 10 feet.
.FRIDAY...Northeast winds 15 to 20 knots. Seas 3 to 5 feet,
occasionally to 6 feet. A slight chance of showers in the
morning, then a chance of showers with a slight chance of
thunderstorms in the afternoon.
.FRIDAY NIGHT...East winds 15 to 20 knots, diminishing to 10 to
15 knots after midnight. Seas 3 to 5 feet, occasionally to
6 feet. 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.

$$