FZUS54 KLCH 210809 CWFLCH Coastal Waters Forecast National Weather Service Lake Charles LA 308 AM CDT Sun Jun 21 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. GMZ400-212100- 308 AM CDT Sun Jun 21 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... The pressure gradient will gradually tighten into Sunday night which is increase winds. Sunday night into Monday there could be a brief period where winds reach SCA criteria over a portion of the gulf waters. Winds will decrease again by Tuesday with a light to moderate onshore flow anticipated through the remainder of the week. $$ GMZ430-212100- Sabine Lake- 308 AM CDT Sun Jun 21 2026 .TODAY...South winds 10 to 15 knots. Lake waters choppy. Showers likely with a chance of thunderstorms this morning, then a slight chance of showers and thunderstorms this afternoon. .TONIGHT...South winds 10 to 15 knots. Lake waters choppy. .MONDAY...South winds 10 to 15 knots. Lake waters choppy. .MONDAY NIGHT...South winds 5 to 10 knots. Lake waters light chop. .TUESDAY...South winds 5 to 10 knots. Lake waters light chop. .TUESDAY NIGHT...Southwest winds 5 to 10 knots. Lake waters light chop. .WEDNESDAY...Southwest winds 5 to 10 knots. Lake waters light chop. .WEDNESDAY NIGHT...Southwest winds 5 to 10 knots. Lake waters light chop. .THURSDAY...Southwest winds 5 to 10 knots. Lake waters light chop. .THURSDAY NIGHT...South winds 5 to 10 knots. Lake waters light chop. Winds and waves higher in and near thunderstorms. $$ GMZ432-212100- Calcasieu Lake- 308 AM CDT Sun Jun 21 2026 .TODAY...South winds 10 to 15 knots with gusts up to 20 knots. Lake waters choppy. A chance of showers and thunderstorms this morning. .TONIGHT...South winds 10 to 15 knots with gusts up to 20 knots. Lake waters choppy. .MONDAY...South winds 10 to 15 knots with gusts up to 20 knots. Lake waters choppy. .MONDAY NIGHT...South 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. .THURSDAY NIGHT...South winds 5 to 10 knots. Lake waters light chop. Winds and waves higher in and near thunderstorms. $$ GMZ435-212100- Vermilion and West Cote Blanche Bays- 308 AM CDT Sun Jun 21 2026 .TODAY...South winds 10 to 15 knots. Bay waters choppy. A slight chance of showers and thunderstorms early this morning. .TONIGHT...South winds 10 to 15 knots with gusts up to 20 knots. Bay waters choppy. .MONDAY...South winds 10 to 15 knots. Bay waters choppy. .MONDAY NIGHT...South winds around 10 knots. Bay waters light chop. .TUESDAY...Southwest winds 5 to 10 knots. Bay waters light chop. .TUESDAY NIGHT...Southwest winds 5 to 10 knots. Bay waters light chop. .WEDNESDAY...Southwest winds 5 to 10 knots. Bay waters light chop. .WEDNESDAY NIGHT...Southwest winds 5 to 10 knots. Bay waters light chop. .THURSDAY...Southwest winds 5 to 10 knots. Bay waters light chop. .THURSDAY NIGHT...Southwest winds 5 to 10 knots. Bay waters light chop. Winds and waves higher in and near thunderstorms. $$ GMZ436-212100- Atchafalaya and East Cote Blanche Bays- 308 AM CDT Sun Jun 21 2026 .TODAY...South winds 10 to 15 knots. Bay waters choppy. .TONIGHT...South winds 10 to 15 knots with gusts up to 20 knots. Bay waters choppy. .MONDAY...South winds 10 to 15 knots. Bay waters choppy. .MONDAY NIGHT...South winds 5 to 10 knots. Bay waters light chop. .TUESDAY...Southwest winds 5 to 10 knots. Bay waters light chop. .TUESDAY NIGHT...Southwest winds 5 to 10 knots. Bay waters light chop. .WEDNESDAY...West winds 5 to 10 knots. Bay waters light chop. .WEDNESDAY NIGHT...Southwest winds 5 to 10 knots. Bay waters light chop. .THURSDAY...Southwest winds 5 to 10 knots. Bay waters light chop. .THURSDAY NIGHT...Southwest winds 5 to 10 knots. Bay waters light chop. $$ GMZ450-212100- Coastal waters from Cameron LA to High Island TX out 20 NM- 308 AM CDT Sun Jun 21 2026 .TODAY...South winds 15 to 20 knots. Seas 3 to 4 feet. Wave Detail: South 3 feet at 5 seconds. A chance of showers and thunderstorms early this morning, then a slight chance of showers and thunderstorms late this morning. .TONIGHT...South winds 15 to 20 knots with gusts up to 25 knots. Seas 3 to 4 feet. Wave Detail: South 4 feet at 5 seconds. .MONDAY...South winds 15 to 20 knots, diminishing to 10 to 15 knots in the afternoon. Seas 2 to 4 feet. Wave Detail: South 4 feet at 6 seconds. .MONDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: South 3 feet at 5 seconds. .TUESDAY...South winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: South 3 feet at 5 seconds. .TUESDAY NIGHT...South winds 10 to 15 knots. Seas around 2 feet. Wave Detail: South 2 feet at 5 seconds. .WEDNESDAY...Southwest winds 5 to 10 knots, increasing to 10 to 15 knots in the afternoon. Seas around 2 feet. .WEDNESDAY NIGHT...Southwest winds 10 to 15 knots. Seas around 2 feet. .THURSDAY...Southwest winds 5 to 10 knots, becoming south 10 to 15 knots in the afternoon. Seas around 2 feet. .THURSDAY NIGHT...South winds 10 to 15 knots. Seas around 2 feet. Winds and seas higher in and near thunderstorms. $$ GMZ452-212100- Coastal waters from Intracoastal City to Cameron LA out 20 NM- 308 AM CDT Sun Jun 21 2026 .TODAY...South winds around 15 knots with gusts up to 20 knots. Seas 2 to 4 feet. Wave Detail: South 4 feet at 5 seconds. A slight chance of showers and thunderstorms this morning. .TONIGHT...South winds 15 to 20 knots. Seas 2 to 4 feet. Wave Detail: South 3 feet at 5 seconds. .MONDAY...South winds 15 to 20 knots, diminishing to 10 to 15 knots in the afternoon. Seas 2 to 4 feet. Wave Detail: South 4 feet at 6 seconds. .MONDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: South 3 feet at 5 seconds. .TUESDAY...Southwest winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: South 3 feet at 6 seconds. .TUESDAY NIGHT...Southwest winds around 10 knots. Seas around 2 feet. Wave Detail: South 2 feet at 5 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 5 to 10 knots. Seas around 2 feet. .THURSDAY NIGHT...South winds 10 to 15 knots. Seas around 2 feet. Winds and seas higher in and near thunderstorms. $$ GMZ455-212100- Coastal waters from Lower Atchafalaya River to Intracoastal City LA out 20 NM- 308 AM CDT Sun Jun 21 2026 .TODAY...South winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: South 2 feet at 3 seconds and south 2 feet at 6 seconds. A slight chance of showers and thunderstorms early this morning. .TONIGHT...South winds 10 to 15 knots with gusts up to 20 knots. Seas 2 to 3 feet. Wave Detail: South 2 feet at 3 seconds. .MONDAY...South winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: South 3 feet at 6 seconds and south 2 feet at 3 seconds. .MONDAY NIGHT...South winds around 10 knots. Seas around 2 feet. Wave Detail: South 2 feet at 4 seconds. .TUESDAY...Southwest winds 5 to 10 knots. Seas around 2 feet. Wave Detail: South 2 feet at 6 seconds. .TUESDAY NIGHT...Southwest winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Southwest 1 foot at 3 seconds. .WEDNESDAY...West winds 5 to 10 knots. Seas around 2 feet in the morning, then 1 foot or less. .WEDNESDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or less. .THURSDAY...Southwest winds 5 to 10 knots. Seas 1 foot or less. .THURSDAY NIGHT...South winds 5 to 10 knots. Seas 1 foot or less. Winds and seas higher in and near thunderstorms. $$ GMZ470-212100- Coastal waters from Cameron LA to High Island TX from 20 to 60 NM- 308 AM CDT Sun Jun 21 2026 .TODAY...South winds around 15 knots with gusts up to 20 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: South 4 feet at 7 seconds. A chance of showers and thunderstorms early this morning. .TONIGHT...South winds 15 to 20 knots with gusts up to 25 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: South 5 feet at 6 seconds. .MONDAY...South winds 15 to 20 knots, diminishing to 10 to 15 knots in the afternoon. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: South 5 feet at 7 seconds. .MONDAY NIGHT...South winds 10 to 15 knots with gusts up to 20 knots. Seas 3 to 4 feet. Wave Detail: South 4 feet at 6 seconds. .TUESDAY...South winds 5 to 10 knots. Seas 2 to 4 feet. Wave Detail: South 3 feet at 7 seconds. .TUESDAY NIGHT...South winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: South 3 feet at 6 seconds. .WEDNESDAY...Southwest winds 5 to 10 knots. Seas 2 to 3 feet. .WEDNESDAY NIGHT...South winds around 10 knots. Seas around 2 feet. .THURSDAY...South winds 5 to 10 knots. Seas around 2 feet. .THURSDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet. Winds and seas higher in and near thunderstorms. $$ GMZ472-212100- Coastal waters from Intracoastal City to Cameron LA from 20 to 60 NM- 308 AM CDT Sun Jun 21 2026 .TODAY...South winds around 15 knots with gusts up to 20 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: South 5 feet at 7 seconds. A slight chance of showers and thunderstorms early this morning. .TONIGHT...South winds 15 to 20 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: South 5 feet at 6 seconds. .MONDAY...South winds 10 to 15 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: South 5 feet at 7 seconds. .MONDAY NIGHT...South winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: South 4 feet at 6 seconds. .TUESDAY...South winds 5 to 10 knots. Seas 2 to 4 feet. Wave Detail: South 4 feet at 7 seconds. .TUESDAY NIGHT...Southwest winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: South 3 feet at 6 seconds. .WEDNESDAY...Southwest winds 5 to 10 knots. Seas around 2 feet. .WEDNESDAY NIGHT...Southwest winds 5 to 10 knots. Seas around 2 feet. .THURSDAY...Southwest winds 5 to 10 knots. Seas around 2 feet. .THURSDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet. Winds and seas higher in and near thunderstorms. $$ GMZ475-212100- Coastal waters from Lower Atchafalaya River to Intracoastal City LA from 20 to 60 NM- 308 AM CDT Sun Jun 21 2026 .TODAY...South winds around 15 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: South 5 feet at 7 seconds. .TONIGHT...South winds 15 to 20 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: South 5 feet at 6 seconds. .MONDAY...South winds 10 to 15 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: South 5 feet at 6 seconds. .MONDAY NIGHT...South winds around 10 knots. Seas 3 to 4 feet. Wave Detail: South 4 feet at 6 seconds. .TUESDAY...Southwest winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: South 3 feet at 7 seconds. .TUESDAY NIGHT...Southwest winds 5 to 10 knots. Seas around 2 feet. Wave Detail: South 2 feet at 6 seconds. .WEDNESDAY...West winds around 5 knots. Seas around 2 feet. .WEDNESDAY NIGHT...Southwest winds 5 to 10 knots. Seas around 2 feet. .THURSDAY...Southwest winds around 5 knots. Seas around 2 feet in the morning, then 1 foot or less. .THURSDAY NIGHT...South winds 5 to 10 knots. Seas 1 foot or less, then around 2 feet after midnight. $$