FZUS54 KLCH 150809 CWFLCH Coastal Waters Forecast National Weather Service Lake Charles LA 309 AM CDT Wed Apr 15 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. GMZ400-152100- 309 AM CDT Wed Apr 15 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 will continue the generally calm weather we have been seeing for the past several days. Steady onshore flow will remain around 10 to 15 knots with waves below 5 feet. On Saturday evening, a cold front will move offshore, causing widespread rain along with a wind shift. Winds look concerning for Sunday night/Monday, with offshore winds around 30 knots and gusts up to 40 knots being possible. Marine headlines are likely after the passage of the front. $$ GMZ430-152100- Sabine Lake- 309 AM CDT Wed Apr 15 2026 .TODAY...South winds 10 to 15 knots. Lake waters choppy. .TONIGHT...South winds 10 to 15 knots. Lake waters choppy. .THURSDAY...South winds 10 to 15 knots. Lake waters choppy. .THURSDAY NIGHT...South winds 10 to 15 knots, diminishing to 5 to 10 knots after midnight. Lake waters choppy. .FRIDAY...South winds 10 to 15 knots. Lake waters choppy. .FRIDAY NIGHT...South winds 10 to 15 knots. Lake waters choppy. .SATURDAY...South winds 10 to 15 knots. Lake waters choppy. A slight chance of showers and thunderstorms in the afternoon. .SATURDAY NIGHT...West winds 10 to 15 knots, becoming north 20 to 25 knots after midnight. Lake waters very rough. A slight chance of thunderstorms in the evening. A chance of showers. .SUNDAY...Northeast winds 20 to 25 knots, diminishing to 15 to 20 knots in the afternoon. Lake waters very rough. .SUNDAY NIGHT...Northeast winds 10 to 15 knots. Lake waters choppy. Winds and waves higher in and near thunderstorms. $$ GMZ432-152100- Calcasieu Lake- 309 AM CDT Wed Apr 15 2026 .TODAY...South winds 10 to 15 knots. Lake waters choppy. .TONIGHT...South winds 10 to 15 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 with gusts up to 25 knots. Lake waters choppy. .FRIDAY NIGHT...South winds 10 to 15 knots with gusts up to 20 knots. Lake waters choppy. .SATURDAY...South winds 10 to 15 knots. Lake waters choppy. A slight chance of showers and thunderstorms in the afternoon. .SATURDAY NIGHT...West winds 10 to 15 knots, becoming north 15 to 20 knots after midnight. Lake waters rough. A slight chance of thunderstorms in the evening. Showers likely. .SUNDAY...Northeast winds 15 to 20 knots. Lake waters rough. A slight chance of showers in the morning. .SUNDAY NIGHT...Northeast winds 10 to 15 knots. Lake waters choppy. Winds and waves higher in and near thunderstorms. $$ GMZ435-152100- Vermilion and West Cote Blanche Bays- 309 AM CDT Wed Apr 15 2026 .TODAY...Southeast winds 10 to 15 knots. Bay waters choppy. .TONIGHT...South winds 5 to 10 knots. Bay waters light chop. .THURSDAY...South winds 5 to 10 knots. Bay waters light chop. .THURSDAY NIGHT...South winds 5 to 10 knots. Bay waters light chop. .FRIDAY...South winds 5 to 10 knots, increasing to 10 to 15 knots with gusts up to 20 knots in the afternoon. Bay waters choppy. .FRIDAY NIGHT...South winds 10 to 15 knots. Bay waters choppy. .SATURDAY...South winds around 10 knots. Bay waters light chop. .SATURDAY NIGHT...Southwest winds around 10 knots, becoming north 15 to 20 knots after midnight. Bay waters rough. A chance of showers. .SUNDAY...North winds 20 to 25 knots, becoming northeast 15 to 20 knots in the afternoon. Bay waters very rough. A slight chance of showers in the morning. .SUNDAY NIGHT...Northeast winds 10 to 15 knots. Bay waters choppy. $$ GMZ436-152100- Atchafalaya and East Cote Blanche Bays- 309 AM CDT Wed Apr 15 2026 .TODAY...Southeast winds 5 to 10 knots. Bay waters light chop. .TONIGHT...Southeast winds 5 to 10 knots. Bay waters light chop. .THURSDAY...South winds 5 to 10 knots. Bay waters light chop. .THURSDAY NIGHT...South winds 5 to 10 knots. Bay waters light chop. .FRIDAY...South winds 5 to 10 knots. Bay waters light chop. .FRIDAY NIGHT...South winds 5 to 10 knots. Bay waters light chop. .SATURDAY...South winds 5 to 10 knots. Bay waters light chop. .SATURDAY NIGHT...South winds 5 to 10 knots, becoming northwest 10 to 15 knots after midnight. Bay waters choppy. A slight chance of showers in the evening, then a chance of showers after midnight. .SUNDAY...North winds 15 to 20 knots, becoming northeast 10 to 15 knots in the afternoon. Bay waters rough. A slight chance of showers in the morning. .SUNDAY NIGHT...Northeast winds 10 to 15 knots. Bay waters choppy. $$ GMZ450-152100- Coastal waters from Cameron LA to High Island TX out 20 NM- 309 AM CDT Wed Apr 15 2026 .TODAY...South winds around 15 knots with gusts up to 20 knots. Seas 2 to 3 feet. Wave Detail: South 3 feet at 4 seconds. .TONIGHT...South winds around 15 knots. Seas 2 to 3 feet. Wave Detail: South 3 feet at 4 seconds. .THURSDAY...South winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: South 3 feet at 5 seconds. .THURSDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: South 2 feet at 5 seconds. .FRIDAY...Southeast winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: South 3 feet at 4 seconds. .FRIDAY NIGHT...South winds 15 to 20 knots. Seas 3 to 4 feet. Wave Detail: South 4 feet at 5 seconds. .SATURDAY...South winds 10 to 15 knots. Seas 2 to 3 feet. A slight chance of showers and thunderstorms in the afternoon. .SATURDAY NIGHT...Southeast winds 15 to 20 knots, becoming north 25 to 30 knots after midnight. Seas 2 to 3 feet, building to 3 to 5 feet, occasionally to 6 feet after midnight. A slight chance of thunderstorms in the evening. Showers likely. .SUNDAY...Northeast winds 25 to 30 knots, diminishing to 20 to 25 knots in the afternoon. Seas 4 to 6 feet, occasionally to 8 feet. A slight chance of showers in the morning. .SUNDAY NIGHT...Northeast winds 20 to 25 knots, diminishing to 15 to 20 knots after midnight. Seas 2 to 4 feet. Winds and seas higher in and near thunderstorms. $$ GMZ452-152100- Coastal waters from Intracoastal City to Cameron LA out 20 NM- 309 AM CDT Wed Apr 15 2026 .TODAY...Southeast winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: South 3 feet at 5 seconds. .TONIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: South 2 feet at 5 seconds. .THURSDAY...South winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: South 2 feet at 5 seconds. .THURSDAY NIGHT...South winds around 10 knots. Seas around 2 feet. Wave Detail: South 2 feet at 5 seconds. .FRIDAY...South winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: South 3 feet at 4 seconds. .FRIDAY NIGHT...South winds around 15 knots with gusts up to 20 knots. Seas 2 to 3 feet. Wave Detail: South 3 feet at 4 seconds. .SATURDAY...South winds 10 to 15 knots. Seas 2 to 3 feet. .SATURDAY NIGHT...South winds 10 to 15 knots, becoming north 25 to 30 knots after midnight. Seas 2 to 4 feet. A chance of showers with a slight chance of thunderstorms in the evening, then showers likely after midnight. .SUNDAY...Northeast winds 25 to 30 knots, diminishing to 20 to 25 knots in the afternoon. Seas 3 to 5 feet, occasionally to 6 feet. A slight chance of showers in the morning. .SUNDAY NIGHT...Northeast winds 20 to 25 knots. Seas 2 to 4 feet. Winds and seas higher in and near thunderstorms. $$ GMZ455-152100- Coastal waters from Lower Atchafalaya River to Intracoastal City LA out 20 NM- 309 AM CDT Wed Apr 15 2026 .TODAY...Southeast winds around 10 knots. Seas around 2 feet. Wave Detail: Southeast 1 foot at 2 seconds. .TONIGHT...Southeast winds around 10 knots. Seas around 2 feet. Wave Detail: Southeast 1 foot at 2 seconds and south 1 foot at 5 seconds. .THURSDAY...South winds 5 to 10 knots. Seas around 2 feet. .THURSDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet. .FRIDAY...Southeast winds 5 to 10 knots. Seas around 2 feet. Wave Detail: South 1 foot at 2 seconds. .FRIDAY NIGHT...South winds 10 to 15 knots. Seas around 2 feet. Wave Detail: South 2 feet at 5 seconds and south 1 foot at 2 seconds. .SATURDAY...South winds 5 to 10 knots. Seas around 2 feet. .SATURDAY NIGHT...South winds 5 to 10 knots, becoming northwest 15 to 20 knots after midnight. Seas 2 to 3 feet. A slight chance of showers in the evening, then a chance of showers after midnight. .SUNDAY...North winds 20 to 25 knots, becoming northeast 15 to 20 knots in the afternoon. Seas 2 to 4 feet. A slight chance of showers in the morning. .SUNDAY NIGHT...Northeast winds 15 to 20 knots. Seas 2 to 3 feet. $$ GMZ470-152100- Coastal waters from Cameron LA to High Island TX from 20 to 60 NM- 309 AM CDT Wed Apr 15 2026 .TODAY...Southeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: Southeast 3 feet at 6 seconds. .TONIGHT...Southeast winds 10 to 15 knots. Seas around 3 feet. Wave Detail: South 3 feet at 6 seconds. .THURSDAY...South winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: South 3 feet at 6 seconds. .THURSDAY NIGHT...South winds around 10 knots. Seas 2 to 3 feet. Wave Detail: South 2 feet at 6 seconds. .FRIDAY...Southeast winds 10 to 15 knots. Seas around 3 feet. Wave Detail: South 3 feet at 7 seconds. .FRIDAY NIGHT...South winds around 15 knots with gusts up to 20 knots. Seas 3 to 4 feet. Wave Detail: Southeast 4 feet at 6 seconds. .SATURDAY...South winds 10 to 15 knots, diminishing to 5 to 10 knots in the afternoon. Seas 2 to 4 feet. A slight chance of showers in the afternoon. .SATURDAY NIGHT...Southeast winds 10 to 15 knots, becoming northeast 25 to 30 knots after midnight. Seas 2 to 3 feet, building to 4 to 6 feet, occasionally to 8 feet after midnight. Showers likely with a slight chance of thunderstorms. .SUNDAY...Northeast winds 25 to 30 knots. Seas 6 to 9 feet, occasionally to 11 feet. A slight chance of showers. .SUNDAY NIGHT...Northeast winds 20 to 25 knots. Seas 5 to 7 feet, occasionally to 9 feet. Winds and seas higher in and near thunderstorms. $$ GMZ472-152100- Coastal waters from Intracoastal City to Cameron LA from 20 to 60 NM- 309 AM CDT Wed Apr 15 2026 .TODAY...Southeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: South 3 feet at 6 seconds. .TONIGHT...Southeast winds 10 to 15 knots. Seas around 3 feet. Wave Detail: South 3 feet at 6 seconds. .THURSDAY...South winds around 10 knots. Seas around 3 feet. Wave Detail: South 3 feet at 6 seconds. .THURSDAY NIGHT...South winds around 10 knots. Seas 2 to 3 feet. Wave Detail: South 2 feet at 6 seconds. .FRIDAY...Southeast winds 10 to 15 knots. Seas around 3 feet. Wave Detail: South 3 feet at 7 seconds. .FRIDAY NIGHT...South winds 10 to 15 knots with gusts up to 20 knots. Seas around 3 feet. Wave Detail: Southeast 3 feet at 6 seconds. .SATURDAY...South winds 10 to 15 knots. Seas around 3 feet. .SATURDAY NIGHT...Southeast winds 10 to 15 knots, becoming north 20 to 25 knots after midnight. Seas 2 to 3 feet, building to 3 to 5 feet, occasionally to 6 feet after midnight. A chance of showers. A slight chance of thunderstorms after midnight. .SUNDAY...Northeast winds 25 to 30 knots, diminishing to 20 to 25 knots in the afternoon. Seas 5 to 8 feet, occasionally to 10 feet. A slight chance of showers in the morning. .SUNDAY NIGHT...Northeast winds 20 to 25 knots. Seas 5 to 7 feet, occasionally to 9 feet. Winds and seas higher in and near thunderstorms. $$ GMZ475-152100- Coastal waters from Lower Atchafalaya River to Intracoastal City LA from 20 to 60 NM- 309 AM CDT Wed Apr 15 2026 .TODAY...Southeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: Southeast 4 feet at 7 seconds. .TONIGHT...Southeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: South 3 feet at 6 seconds. .THURSDAY...South winds around 10 knots. Seas 2 to 3 feet. Wave Detail: South 3 feet at 6 seconds. .THURSDAY NIGHT...South winds around 10 knots. Seas 2 to 3 feet. Wave Detail: South 3 feet at 6 seconds. .FRIDAY...Southeast winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: South 3 feet at 6 seconds. .FRIDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 4 feet. Wave Detail: Southeast 4 feet at 6 seconds. .SATURDAY...South winds 10 to 15 knots. Seas 2 to 4 feet. .SATURDAY NIGHT...South winds 5 to 10 knots, becoming northwest 15 to 20 knots after midnight. Seas 2 to 3 feet. A slight chance of showers in the evening, then a chance of showers after midnight. .SUNDAY...Northeast winds 20 to 25 knots. Seas 5 to 7 feet, occasionally to 9 feet. A slight chance of showers in the morning. .SUNDAY NIGHT...Northeast winds 20 to 25 knots. Seas 5 to 7 feet, occasionally to 9 feet. $$