Expires:202608172100;;868985 FZUS54 KLCH 170808 CWFLCH Coastal Waters Forecast National Weather Service Lake Charles LA 308 AM CDT Mon Aug 17 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. GMZ455-172100- Coastal waters from Lower Atchafalaya River to Intracoastal City LA out 20 NM- 308 AM CDT Mon Aug 17 2026 .TODAY...West winds around 5 knots, becoming southwest late. 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. .TUESDAY...West winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: West 1 foot at 3 seconds. .TUESDAY NIGHT...West winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: West 1 foot at 3 seconds. .WEDNESDAY...West winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: West 1 foot at 3 seconds. .WEDNESDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: Southwest 1 foot at 3 seconds. .THURSDAY...West winds 5 to 10 knots. Seas 1 foot or less. .THURSDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or less. .FRIDAY...West winds 5 to 10 knots. Seas 1 foot or less. .FRIDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or less. A slight chance of showers and thunderstorms after midnight. Winds and seas higher in and near thunderstorms. $$