National Weather Service Marine Forecast FZUS54 KLCH

FZUS54 KLCH 302009
CWFLCH

Coastal Waters Forecast
National Weather Service Lake Charles LA
309 PM CDT Thu Jul 30 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.

GMZ400-310900
309 PM CDT Thu Jul 30 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...

A light southwest flow will remain in place into Saturday evening, however a weak boundary may move into the coastal waters early Sunday with a brief period of offshore winds. South to SW winds will occur again by Sunday evening and last into the middle of next week.

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GMZ430-310900
Sabine Lake
309 PM CDT Thu Jul 30 2026

TONIGHT
Southwest winds 5 to 10 knots. Lake waters light chop.

FRIDAY
Southwest winds 5 to 10 knots. Lake waters light chop.

FRIDAY NIGHT
Southwest winds around 10 knots. Lake waters light chop.

SATURDAY
West winds around 10 knots. Lake waters light chop.

SATURDAY NIGHT
Southwest winds 10 to 15 knots with gusts up to 20 knots. Lake waters choppy. A chance of showers and thunderstorms after midnight.

SUNDAY
West 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.

SUNDAY NIGHT
Southwest winds 5 to 10 knots. Lake waters light chop. A slight chance of showers and thunderstorms after midnight.

MONDAY
Southwest winds 5 to 10 knots. Lake waters light chop.

MONDAY NIGHT
Southwest winds 5 to 10 knots. Lake waters light chop.

TUESDAY
Southwest winds 5 to 10 knots. Lake waters light chop. A slight chance of showers and thunderstorms in the afternoon.

TUESDAY NIGHT
South winds 5 to 10 knots. Lake waters light chop.

Winds and waves higher in and near thunderstorms.

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GMZ432-310900
Calcasieu Lake
309 PM CDT Thu Jul 30 2026

TONIGHT
Southwest winds 10 to 15 knots, diminishing to 5 to 10 knots late. Lake waters choppy.

FRIDAY
Southwest winds 5 to 10 knots, increasing to 10 to 15 knots with gusts up to 20 knots in the afternoon. Lake waters choppy. A slight chance of showers and thunderstorms in the afternoon.

FRIDAY NIGHT
Southwest winds 10 to 15 knots with gusts up to 20 knots. Lake waters choppy.

SATURDAY
West winds 10 to 15 knots with gusts up to 20 knots. Lake waters choppy.

SATURDAY NIGHT
Southwest winds 10 to 15 knots with gusts up to 20 knots. Lake waters choppy. A chance of showers and thunderstorms after midnight.

SUNDAY
West winds 10 to 15 knots. Lake waters choppy. A slight chance of showers and thunderstorms.

SUNDAY NIGHT
Southwest winds 5 to 10 knots. Lake waters light chop. A slight chance of showers and thunderstorms after midnight.

MONDAY
West winds 5 to 10 knots, becoming southwest in the afternoon. Lake waters light chop.

MONDAY NIGHT
Southwest winds 5 to 10 knots. Lake waters light chop.

TUESDAY
Southwest winds 5 to 10 knots. Lake waters light chop. A slight chance of showers and thunderstorms.

TUESDAY NIGHT
Southwest winds 5 to 10 knots. Lake waters light chop.

Winds and waves higher in and near thunderstorms.

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GMZ435-310900
Vermilion and West Cote Blanche Bays
309 PM CDT Thu Jul 30 2026

TONIGHT
Southwest winds 10 to 15 knots. Bay waters choppy.

FRIDAY
Southwest winds 10 to 15 knots. Bay waters choppy. A slight chance of showers and thunderstorms in the afternoon.

FRIDAY NIGHT
Southwest winds 10 to 15 knots. Bay waters choppy.

SATURDAY
West winds around 15 knots with gusts up to 20 knots. Bay waters choppy.

SATURDAY NIGHT
Southwest winds 15 to 20 knots. Bay waters rough. Showers likely with a chance of thunderstorms after midnight.

SUNDAY
West winds 15 to 20 knots, diminishing to 10 to 15 knots in the afternoon. Bay waters rough. A chance of showers and thunderstorms.

SUNDAY NIGHT
Southwest winds 10 to 15 knots. Bay waters choppy. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight.

MONDAY
West winds 5 to 10 knots, becoming southwest in the afternoon. Bay waters light chop. A slight chance of showers and thunderstorms.

MONDAY NIGHT
Southwest winds 5 to 10 knots. Bay waters light chop. A slight chance of showers and thunderstorms after midnight.

TUESDAY
Southwest winds 5 to 10 knots. Bay waters light chop. A slight chance of showers and thunderstorms.

TUESDAY NIGHT
Southwest 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.

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GMZ436-310900
Atchafalaya and East Cote Blanche Bays
309 PM CDT Thu Jul 30 2026

TONIGHT
Southwest winds 5 to 10 knots. Bay waters light chop.

FRIDAY
Southwest winds 5 to 10 knots. Bay waters light chop.

FRIDAY NIGHT
Southwest winds 10 to 15 knots. Bay waters choppy.

SATURDAY
West winds 10 to 15 knots with gusts up to 20 knots. Bay waters choppy.

SATURDAY NIGHT
Southwest winds 10 to 15 knots, increasing to 15 to 20 knots after midnight. Bay waters rough. Showers likely with a chance of thunderstorms after midnight.

SUNDAY
West winds 10 to 15 knots with gusts up to 20 knots. Bay waters choppy. Showers and thunderstorms likely, mainly in the morning.

SUNDAY NIGHT
Southwest winds 10 to 15 knots, diminishing to 5 to 10 knots after midnight. Bay waters choppy. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight.

MONDAY
West winds 5 to 10 knots. Bay waters light chop. A chance of showers and thunderstorms, mainly in the morning.

MONDAY NIGHT
Southwest winds 5 to 10 knots. Bay waters light chop. A slight chance of showers and thunderstorms.

TUESDAY
Southwest winds 5 to 10 knots. Bay waters light chop. A slight chance of showers and thunderstorms.

TUESDAY NIGHT
Southwest winds around 5 knots. Bay waters smooth. A slight chance of showers and thunderstorms after midnight.

Winds and waves higher in and near thunderstorms.

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GMZ450-310900
Coastal waters from Cameron LA to High Island TX out 20 NM
309 PM CDT Thu Jul 30 2026

TONIGHT
Southwest winds 10 to 15 knots. Seas around 2 feet. Wave Detail: South 2 feet at 5 seconds.

FRIDAY
Southwest winds 10 to 15 knots. Seas around 2 feet. Wave Detail: Southwest 2 feet at 4 seconds.

FRIDAY NIGHT
Southwest winds 10 to 15 knots, increasing to 15 to 20 knots after midnight. Seas 2 to 3 feet. Wave Detail: Southwest 3 feet at 4 seconds.

SATURDAY
Southwest winds 15 to 20 knots. Seas 2 to 3 feet. Wave Detail: Southwest 3 feet at 4 seconds.

SATURDAY NIGHT
Southwest winds around 20 knots with gusts up to 25 knots. Seas 3 to 4 feet. Wave Detail: Southwest 4 feet at 5 seconds. A chance of showers and thunderstorms after midnight.

SUNDAY
West winds 15 to 20 knots, diminishing to 10 to 15 knots in the afternoon. Seas 2 to 4 feet. Wave Detail: Southwest 4 feet at 5 seconds. A chance of showers and thunderstorms in the morning.

SUNDAY NIGHT
Southwest winds around 15 knots with gusts up to 20 knots. Seas 2 to 3 feet. A slight chance of showers and thunderstorms after midnight.

MONDAY
Southwest winds 10 to 15 knots. Seas 2 to 3 feet.

MONDAY NIGHT
Southwest winds around 15 knots. Seas 2 to 3 feet. A slight chance of showers and thunderstorms after midnight.

TUESDAY
Southwest winds 10 to 15 knots. Seas 2 to 3 feet. A slight chance of showers and thunderstorms.

TUESDAY NIGHT
South winds 10 to 15 knots. Seas around 2 feet.

Winds and seas higher in and near thunderstorms.

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GMZ452-310900
Coastal waters from Intracoastal City to Cameron LA out 20 NM
309 PM CDT Thu Jul 30 2026

TONIGHT
Southwest winds 10 to 15 knots. Seas around 2 feet. Wave Detail: Southwest 2 feet at 4 seconds.

FRIDAY
Southwest winds 10 to 15 knots. Seas around 2 feet. Wave Detail: Southwest 2 feet at 4 seconds.

FRIDAY NIGHT
Southwest winds 10 to 15 knots, increasing to 15 to 20 knots after midnight. Seas 2 to 3 feet. Wave Detail: Southwest 3 feet at 4 seconds.

SATURDAY
West winds 15 to 20 knots with gusts up to 25 knots. Seas 2 to 4 feet. Wave Detail: Southwest 4 feet at 5 seconds.

SATURDAY NIGHT
Southwest winds around 20 knots with gusts up to 25 knots. Seas 3 to 4 feet. Wave Detail: Southwest 4 feet at 5 seconds. Showers likely with a chance of thunderstorms after midnight.

SUNDAY
West winds 15 to 20 knots with gusts up to 25 knots. Seas 2 to 4 feet. Wave Detail: Southwest 4 feet at 5 seconds. Showers and thunderstorms likely, mainly in the morning.

SUNDAY NIGHT
Southwest winds around 15 knots with gusts up to 20 knots. Seas 2 to 3 feet. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight.

MONDAY
West winds 10 to 15 knots. Seas 2 to 3 feet. A slight chance of showers and thunderstorms in the morning.

MONDAY NIGHT
Southwest winds 10 to 15 knots. Seas around 2 feet. A slight chance of showers and thunderstorms after midnight.

TUESDAY
Southwest winds 10 to 15 knots, diminishing to 5 to 10 knots in the afternoon. Seas around 2 feet. A slight chance of showers and thunderstorms in the morning.

TUESDAY NIGHT
South winds around 10 knots. Seas around 2 feet.

Winds and seas higher in and near thunderstorms.

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GMZ455-310900
Coastal waters from Lower Atchafalaya River to Intracoastal City LA out 20 NM
309 PM CDT Thu Jul 30 2026

TONIGHT
Southwest winds around 10 knots. Seas 1 foot or less, then around 2 feet after midnight. Wave Detail: Southwest 1 foot at 3 seconds.

FRIDAY
Southwest winds around 10 knots. Seas around 2 feet in the morning, then 1 foot or less. Wave Detail: Southwest 1 foot at 3 seconds, becoming southwest 1 foot at 2 seconds.

FRIDAY NIGHT
Southwest winds 10 to 15 knots. Seas around 2 feet. Wave Detail: Southwest 2 feet at 3 seconds.

SATURDAY
West winds around 15 knots with gusts up to 20 knots. Seas 2 to 3 feet. Wave Detail: Southwest 2 feet at 4 seconds.

SATURDAY NIGHT
Southwest winds 15 to 20 knots. Seas 2 to 3 feet. Wave Detail: Southwest 3 feet at 4 seconds. Showers likely with a chance of thunderstorms after midnight.

SUNDAY
West winds 15 to 20 knots. Seas 2 to 3 feet. Wave Detail: Southwest 3 feet at 4 seconds. Showers with thunderstorms likely in the morning, then a slight chance of showers and thunderstorms in the afternoon.

SUNDAY NIGHT
Southwest winds 10 to 15 knots. Seas 2 to 3 feet. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight.

MONDAY
West winds 10 to 15 knots. Seas around 2 feet. A chance of showers and thunderstorms, mainly in the morning.

MONDAY NIGHT
Southwest winds around 10 knots. Seas around 2 feet. A slight chance of showers and thunderstorms after midnight.

TUESDAY
Southwest winds 5 to 10 knots. Seas around 2 feet in the morning, then 1 foot or less. A slight chance of showers and thunderstorms in the morning.

TUESDAY NIGHT
Southwest winds 5 to 10 knots. Seas 1 foot or less.

Winds and seas higher in and near thunderstorms.

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GMZ470-310900
Coastal waters from Cameron LA to High Island TX from 20 to 60 NM
309 PM CDT Thu Jul 30 2026

TONIGHT
Southwest winds 10 to 15 knots. Seas around 2 feet. Wave Detail: South 2 feet at 5 seconds.

FRIDAY
Southwest winds around 10 knots. Seas around 2 feet. Wave Detail: Southwest 2 feet at 5 seconds.

FRIDAY NIGHT
Southwest winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: South 3 feet at 5 seconds.

SATURDAY
Southwest winds 10 to 15 knots with gusts up to 20 knots. Seas around 3 feet. Wave Detail: Southwest 3 feet at 4 seconds.

SATURDAY NIGHT
Southwest winds 15 to 20 knots with gusts up to 25 knots. Seas 3 to 4 feet. Wave Detail: Southwest 4 feet at 5 seconds. A chance of showers and thunderstorms after midnight.

SUNDAY
West winds 15 to 20 knots, diminishing to 10 to 15 knots in the afternoon. Seas 3 to 4 feet. Wave Detail: Southwest 4 feet at 5 seconds. Showers likely with a chance of thunderstorms in the morning, then a slight chance of showers and thunderstorms in the afternoon.

SUNDAY NIGHT
Southwest winds around 15 knots with gusts up to 20 knots. Seas around 3 feet. A slight chance of showers and thunderstorms after midnight.

MONDAY
Southwest winds 10 to 15 knots. Seas 2 to 3 feet. A slight chance of showers and thunderstorms in the morning.

MONDAY NIGHT
Southwest winds 10 to 15 knots. Seas 2 to 3 feet. A slight chance of showers and thunderstorms after midnight.

TUESDAY
Southwest winds 10 to 15 knots, becoming south 5 to 10 knots in the afternoon. Seas 2 to 3 feet. A slight chance of showers and thunderstorms in the morning.

TUESDAY NIGHT
South winds 5 to 10 knots. Seas around 2 feet.

Winds and seas higher in and near thunderstorms.

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GMZ472-310900
Coastal waters from Intracoastal City to Cameron LA from 20 to 60 NM
309 PM CDT Thu Jul 30 2026

TONIGHT
Southwest winds around 10 knots. Seas around 2 feet. Wave Detail: Southwest 2 feet at 5 seconds.

FRIDAY
Southwest winds around 10 knots. Seas around 2 feet. Wave Detail: Southwest 2 feet at 5 seconds.

FRIDAY NIGHT
Southwest winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: Southwest 3 feet at 5 seconds.

SATURDAY
West winds around 15 knots with gusts up to 20 knots. Seas 2 to 3 feet. Wave Detail: Southwest 3 feet at 5 seconds.

SATURDAY NIGHT
Southwest winds 15 to 20 knots with gusts up to 25 knots. Seas 3 to 4 feet. Wave Detail: South 4 feet at 6 seconds. Showers likely with a chance of thunderstorms after midnight.

SUNDAY
West winds 15 to 20 knots with gusts up to 25 knots. Seas 3 to 4 feet. Wave Detail: Southwest 4 feet at 6 seconds. Showers and thunderstorms likely, mainly in the morning.

SUNDAY NIGHT
Southwest winds 10 to 15 knots with gusts up to 20 knots. Seas around 3 feet. A chance of showers and thunderstorms after midnight.

MONDAY
West winds 10 to 15 knots, becoming southwest 5 to 10 knots in the afternoon. Seas 2 to 3 feet. A chance of showers and thunderstorms in the morning.

MONDAY NIGHT
Southwest winds 10 to 15 knots. Seas around 2 feet. A slight chance of showers and thunderstorms after midnight.

TUESDAY
Southwest winds 5 to 10 knots. Seas around 2 feet. A slight chance of showers and thunderstorms in the morning.

TUESDAY NIGHT
South winds 5 to 10 knots. Seas around 2 feet.

Winds and seas higher in and near thunderstorms.

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GMZ475-310900
Coastal waters from Lower Atchafalaya River to Intracoastal City LA from 20 to 60 NM
309 PM CDT Thu Jul 30 2026

TONIGHT
Southwest winds around 10 knots. Seas around 2 feet. Wave Detail: Southwest 2 feet at 4 seconds.

FRIDAY
Southwest winds around 10 knots. Seas around 2 feet. Wave Detail: Southwest 2 feet at 4 seconds.

FRIDAY NIGHT
Southwest winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: Southwest 3 feet at 5 seconds.

SATURDAY
West winds around 15 knots with gusts up to 20 knots. Seas 2 to 3 feet. Wave Detail: Southwest 3 feet at 4 seconds. A slight chance of showers and thunderstorms.

SATURDAY NIGHT
Southwest winds 15 to 20 knots with gusts up to 25 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: West 5 feet at 6 seconds. A chance of showers and thunderstorms after midnight.

SUNDAY
West winds 15 to 20 knots with gusts up to 25 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: Southwest 5 feet at 6 seconds. Showers with thunderstorms likely in the morning, then a chance of showers and thunderstorms in the afternoon.

SUNDAY NIGHT
Southwest winds around 15 knots with gusts up to 20 knots. Seas 3 to 4 feet. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight.

MONDAY
West winds 10 to 15 knots. Seas 2 to 4 feet. A chance of showers and thunderstorms, mainly in the morning.

MONDAY NIGHT
Southwest winds 10 to 15 knots. Seas around 2 feet. A slight chance of showers and thunderstorms after midnight.

TUESDAY
Southwest winds 10 to 15 knots, diminishing to around 5 knots in the afternoon. Seas around 2 feet. A slight chance of showers and thunderstorms.

TUESDAY NIGHT
South winds 5 to 10 knots. Seas around 2 feet.

Winds and seas higher in and near thunderstorms.