FZUS54 KLCH 230809 CWFLCH Coastal Waters Forecast National Weather Service Lake Charles LA 308 AM CDT Sun Aug 23 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. GMZ400-232100- 308 AM CDT Sun Aug 23 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... Light onshore winds will persist through the week with seas ranging from 1-2 feet. Precipitation chances return across the coastal waters Thursday into next weekend. $$ GMZ430-232100- Sabine Lake- 308 AM CDT Sun Aug 23 2026 .TODAY...West winds around 5 knots, becoming south late. Lake waters light chop. .TONIGHT...Southwest winds 5 to 10 knots. Lake waters light chop. .MONDAY...West winds 5 to 10 knots, becoming southwest in the afternoon. Lake waters light chop. .MONDAY NIGHT...Southwest winds 5 to 10 knots. Lake waters light chop. .TUESDAY...Southwest winds 5 to 10 knots. Lake waters light chop. .TUESDAY NIGHT...Southwest winds 5 to 10 knots. Lake waters light chop. .WEDNESDAY...Southwest winds 5 to 10 knots. Lake waters light chop. .WEDNESDAY NIGHT...Southwest winds 5 to 10 knots. Lake waters light chop. .THURSDAY...Southwest winds 5 to 10 knots. Lake waters light chop. A chance of showers and thunderstorms. .THURSDAY NIGHT...Southwest winds 5 to 10 knots. Lake waters light chop. A slight chance of showers and thunderstorms after midnight. Winds and waves higher in and near thunderstorms. $$ GMZ432-232100- Calcasieu Lake- 308 AM CDT Sun Aug 23 2026 .TODAY...West winds around 5 knots, becoming southwest late. Lake waters light chop. .TONIGHT...Southwest winds 5 to 10 knots. Lake waters light chop. .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. .TUESDAY NIGHT...Southwest winds 5 to 10 knots. Lake waters light chop. .WEDNESDAY...Southwest winds 5 to 10 knots, increasing to 10 to 15 knots in the afternoon. Lake waters choppy. .WEDNESDAY NIGHT...Southwest winds 10 to 15 knots, diminishing to 5 to 10 knots after midnight. Lake waters choppy. .THURSDAY...Southwest winds 5 to 10 knots. Lake waters light chop. A chance of showers and thunderstorms. .THURSDAY NIGHT...Southwest winds 5 to 10 knots. Lake waters light chop. A chance of showers and thunderstorms after midnight. Winds and waves higher in and near thunderstorms. $$ GMZ435-232100- Vermilion and West Cote Blanche Bays- 308 AM CDT Sun Aug 23 2026 .TODAY...Northwest winds 5 to 10 knots, becoming southwest this afternoon. Bay waters light chop. .TONIGHT...Southwest winds 5 to 10 knots. Bay waters light chop. .MONDAY...Southwest winds 5 to 10 knots. Bay waters light chop. A chance of showers and thunderstorms in the afternoon. .MONDAY NIGHT...Southwest winds around 10 knots. Bay waters light chop. A chance of showers and thunderstorms in the evening. .TUESDAY...Southwest winds 5 to 10 knots. Bay waters light chop. A slight chance of showers and thunderstorms. .TUESDAY NIGHT...Southwest winds 5 to 10 knots. Bay waters light chop. .WEDNESDAY...Southwest winds 5 to 10 knots. Bay waters light chop. A slight chance of showers and thunderstorms in the afternoon. .WEDNESDAY NIGHT...Southwest winds 5 to 10 knots. Bay waters light chop. A slight chance of showers and thunderstorms after midnight. .THURSDAY...Southwest winds 5 to 10 knots. Bay waters light chop.A chance of showers and thunderstorms in the morning, then showers and thunderstorms likely in the afternoon. .THURSDAY NIGHT...Southwest winds around 5 knots. Bay waters smooth. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. Winds and waves higher in and near thunderstorms. $$ GMZ436-232100- Atchafalaya and East Cote Blanche Bays- 308 AM CDT Sun Aug 23 2026 .TODAY...West winds 5 to 10 knots, becoming southwest late. Bay waters light chop. A slight chance of showers and thunderstorms this afternoon. .TONIGHT...Southwest winds 5 to 10 knots. Bay waters light chop. .MONDAY...West winds 5 to 10 knots. Bay waters light chop. A chance of showers and thunderstorms in the afternoon. .MONDAY NIGHT...Southwest winds 5 to 10 knots. Bay waters light chop. A slight chance of showers and thunderstorms in the evening. .TUESDAY...West winds 5 to 10 knots. Bay waters light chop. A chance of showers and thunderstorms. .TUESDAY NIGHT...Southwest winds 5 to 10 knots. Bay waters light chop. .WEDNESDAY...West winds 5 to 10 knots. Bay waters light chop. A chance of showers and thunderstorms in the afternoon. .WEDNESDAY NIGHT...Southwest winds 5 to 10 knots. Bay waters light chop. A slight chance of showers and thunderstorms after midnight. .THURSDAY...West winds 5 to 10 knots. Bay waters light chop. Showers likely. A chance of thunderstorms in the morning, then thunderstorms likely in the afternoon. .THURSDAY NIGHT...Southwest winds around 5 knots. Bay waters smooth. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. Winds and waves higher in and near thunderstorms. $$ GMZ450-232100- Coastal waters from Cameron LA to High Island TX out 20 NM- 308 AM CDT Sun Aug 23 2026 .TODAY...West winds 5 to 10 knots, becoming southwest 10 to 15 knots late. Seas around 2 feet. Wave Detail: Southwest 2 feet at 4 seconds. .TONIGHT...Southwest winds 10 to 15 knots. Seas around 2 feet. Wave Detail: Southwest 2 feet at 3 seconds. .MONDAY...Southwest winds 10 to 15 knots. Seas around 2 feet. Wave Detail: Southwest 2 feet at 4 seconds. .MONDAY NIGHT...Southwest winds 10 to 15 knots. Seas around 2 feet. Wave Detail: South 2 feet at 3 seconds. .TUESDAY...Southwest winds 10 to 15 knots. Seas around 2 feet. Wave Detail: Southwest 2 feet at 4 seconds. .TUESDAY NIGHT...Southwest winds 10 to 15 knots. Seas around 2 feet. Wave Detail: Southwest 2 feet at 4 seconds. .WEDNESDAY...Southwest winds 10 to 15 knots. Seas around 2 feet. .WEDNESDAY NIGHT...Southwest winds 10 to 15 knots. Seas 2 to 3 feet. .THURSDAY...Southwest winds 10 to 15 knots. Seas 2 to 3 feet. A chance of showers and thunderstorms, mainly in the morning. .THURSDAY NIGHT...Southwest winds 10 to 15 knots. Seas around 2 feet. A slight chance of showers and thunderstorms after midnight. Winds and seas higher in and near thunderstorms. $$ GMZ452-232100- Coastal waters from Intracoastal City to Cameron LA out 20 NM- 308 AM CDT Sun Aug 23 2026 .TODAY...West winds 5 to 10 knots, becoming southwest late. Seas around 2 feet this morning, then 1 foot or less. Wave Detail: West 2 feet at 4 seconds, becoming southwest 1 foot at 4 seconds. .TONIGHT...Southwest winds 10 to 15 knots. Seas around 2 feet. Wave Detail: Southwest 2 feet at 3 seconds. .MONDAY...Southwest winds 5 to 10 knots. Seas around 2 feet in the morning, then 1 foot or less. Wave Detail: Southwest 2 feet at 4 seconds, becoming southwest 1 foot at 4 seconds. .MONDAY NIGHT...Southwest winds 10 to 15 knots. Seas around 2 feet. Wave Detail: Southwest 2 feet at 4 seconds. .TUESDAY...Southwest winds 10 to 15 knots, diminishing to 5 to 10 knots in the afternoon. Seas around 2 feet in the morning, then 1 foot or less. Wave Detail: Southwest 2 feet at 4 seconds, becoming southwest 1 foot at 4 seconds. .TUESDAY NIGHT...Southwest winds 10 to 15 knots. Seas around 2 feet. Wave Detail: Southwest 2 feet at 4 seconds. .WEDNESDAY...Southwest winds 5 to 10 knots. Seas around 2 feet. .WEDNESDAY NIGHT...Southwest winds 10 to 15 knots. Seas around 2 feet. .THURSDAY...West winds 10 to 15 knots, diminishing to 5 to 10 knots in the afternoon. Seas around 2 feet. A chance of showers and thunderstorms. .THURSDAY NIGHT...Southwest winds around 10 knots. Seas around 2 feet. A chance of showers and thunderstorms after midnight. Winds and seas higher in and near thunderstorms. $$ GMZ455-232100- Coastal waters from Lower Atchafalaya River to Intracoastal City LA out 20 NM- 308 AM CDT Sun Aug 23 2026 .TODAY...West winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: West 1 foot at 3 seconds. .TONIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: Southwest 1 foot at 3 seconds. .MONDAY...West winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: West 1 foot at 3 seconds. A slight chance of showers and thunderstorms in the afternoon. .MONDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: Southwest 1 foot at 3 seconds. .TUESDAY...West winds 5 to 10 knots, diminishing to around 5 knots in the afternoon. Seas 1 foot or less. Wave Detail: Southwest 1 foot at 3 seconds. A chance of showers and thunderstorms, mainly in the morning. .TUESDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: Southwest 1 foot at 3 seconds. .WEDNESDAY...West winds 5 to 10 knots. Seas 1 foot or less. A slight chance of showers and thunderstorms in the afternoon. .WEDNESDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or less. A slight chance of showers and thunderstorms after midnight. .THURSDAY...West winds 5 to 10 knots. Seas 1 foot or less. Showers and thunderstorms likely, mainly in the morning. .THURSDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or less. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. Winds and seas higher in and near thunderstorms. $$ GMZ470-232100- Coastal waters from Cameron LA to High Island TX from 20 to 60 NM- 308 AM CDT Sun Aug 23 2026 .TODAY...West winds 5 to 10 knots. Seas around 2 feet this morning, then 1 foot or less. Wave Detail: Southwest 2 feet at 4 seconds, becoming southwest 1 foot at 4 seconds. .TONIGHT...Southwest winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Southwest 2 feet at 3 seconds. .MONDAY...Southwest winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Southwest 2 feet at 4 seconds. .MONDAY NIGHT...South winds 5 to 10 knots, becoming southwest 10 to 15 knots after midnight. Seas around 2 feet. Wave Detail: South 2 feet at 4 seconds. .TUESDAY...Southwest winds 10 to 15 knots, diminishing to 5 to 10 knots in the afternoon. Seas around 2 feet. Wave Detail: Southwest 2 feet at 4 seconds. .TUESDAY NIGHT...South winds 5 to 10 knots, becoming southwest 10 to 15 knots after midnight. Seas around 2 feet. Wave Detail: South 2 feet at 4 seconds. .WEDNESDAY...Southwest winds 5 to 10 knots. Seas around 2 feet. .WEDNESDAY NIGHT...Southwest winds 10 to 15 knots. Seas around 2 feet. .THURSDAY...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. .THURSDAY NIGHT...Southwest winds 10 to 15 knots. Seas around 2 feet. A slight chance of showers and thunderstorms after midnight. Winds and seas higher in and near thunderstorms. $$ GMZ472-232100- Coastal waters from Intracoastal City to Cameron LA from 20 to 60 NM- 308 AM CDT Sun Aug 23 2026 .TODAY...West winds 5 to 10 knots. Seas around2 feet this morning, then 1 foot or less. Wave Detail: West 2 feet at 4 seconds, becoming west 1 foot at 4 seconds. .TONIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or less, then around 2 feet after midnight. Wave Detail: Southwest 1 foot at 4 seconds, becoming southwest 2 feet at 3 seconds. .MONDAY...Southwest winds 5 to 10 knots. Seas around 2 feet in the morning, then 1 foot or less. Wave Detail: Southwest 2 feet at 4 seconds, becoming west 1 foot at 4 seconds. .MONDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or less, then around 2 feet after midnight. Wave Detail: Southwest 1 foot at 4 seconds, becoming southwest 2 feet at 3 seconds. .TUESDAY...Southwest winds 5 to 10 knots. Seas around 2 feet in the morning, then 1 foot or less. Wave Detail: Southwest 2 feet at 4 seconds, becoming southwest 1 foot at 4 seconds. .TUESDAY NIGHT...Southwest winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Southwest 2 feet at 4 seconds. .WEDNESDAY...Southwest winds 5 to 10 knots. Seas around 2 feet in the morning, then 1 foot or less. .WEDNESDAY NIGHT...Southwest winds 5 to 10 knots. Seas around 2 feet. .THURSDAY...West winds 5 to 10 knots. Seas around 2 feet. A chance of showers and thunderstorms. .THURSDAY NIGHT...Southwest winds 5 to 10 knots. Seas around 2 feet. A chance of showers and thunderstorms after midnight. Winds and seas higher in and near thunderstorms. $$ GMZ475-232100- Coastal waters from Lower Atchafalaya River to Intracoastal City LA from 20 to 60 NM- 308 AM CDT Sun Aug 23 2026 .TODAY...West winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: Northwest 1 foot at 3 seconds. .TONIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: West 1 foot at 4 seconds. .MONDAY...West winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: West 1 foot at 3 seconds. .MONDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: West 1 foot at 4 seconds. .TUESDAY...West winds 5 to 10 knots, diminishing to around 5 knots in the afternoon. Seas 1 foot or less. Wave Detail: Southwest 1 foot at 3 seconds. A slight chance of showers and thunderstorms in the morning. .TUESDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: Southwest 1 foot at 3 seconds. .WEDNESDAY...West winds 5 to 10 knots. Seas 1 foot or less. .WEDNESDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or less. A slight chance of showers and thunderstorms after midnight. .THURSDAY...West winds 5 to 10 knots. Seas 1 foot or less. A chance of showers and thunderstorms. .THURSDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or less. A chance of showers and thunderstorms after midnight. Winds and seas higher in and near thunderstorms. $$