Coastal Waters Forecast
Issued by NWS Lake Charles, LA
Issued by NWS Lake Charles, LA
515 FZUS54 KLCH 122009 CWFLCH Coastal Waters Forecast National Weather Service Lake Charles LA 309 PM CDT Sat Sep 12 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. GMZ400-130900- 309 PM CDT Sat Sep 12 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... Pockets of coastal showers and storms are ongoing across nearshore waters. These will persist through sundown. Primary concerns will be cloud to water lightning and locally volatile winds. High pressure builds in Sunday through the midweek which will diminish rain chances each day. By Wednesday, only isolated chances are expected. High pressure will also keep winds and seas low through the period. $$ GMZ430-130900- Sabine Lake- 309 PM CDT Sat Sep 12 2026 .TONIGHT...South winds 5 to 10 knots, becoming southwest late. Lake waters light chop. .SUNDAY...South winds around 5 knots. Lake waters smooth. A chance of showers and thunderstorms. .SUNDAY NIGHT...South winds around 5 knots. Lake waters smooth. .MONDAY...South winds around 5 knots, increasing to 5 to 10 knots in the afternoon. Lake waters light chop. A chance of showers and thunderstorms in the afternoon. .MONDAY NIGHT...South winds around 5 knots. Lake waters smooth. .TUESDAY...Southeast winds around 5 knots. Lake waters smooth. A slight chance of showers and thunderstorms in the afternoon. .TUESDAY NIGHT...Southeast winds around 5 knots. Lake waters smooth. .WEDNESDAY...East winds 5 to 10 knots. Lake waters light chop. A slight chance of showers and thunderstorms. .WEDNESDAY NIGHT...Southeast winds 5 to 10 knots. Lake waters light chop. A slight chance of showers and thunderstorms after midnight. .THURSDAY...East winds 5 to 10 knots. Lake waters light chop. A slight chance of showers and thunderstorms. .THURSDAY NIGHT...East winds around 5 knots. Lake waters smooth. Winds and waves higher in and near thunderstorms. $$ GMZ432-130900- Calcasieu Lake- 309 PM CDT Sat Sep 12 2026 .TONIGHT...South winds 5 to 10 knots, becoming southwest late. Lake waters light chop. A slight chance of showers and thunderstorms early this evening. .SUNDAY...Southwest winds around 5 knots, becoming south in the afternoon. Lake waters light chop. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. .SUNDAY NIGHT...South winds around 5 knots. Lake waters smooth. .MONDAY...South winds around 5 knots, increasing to 5 to 10 knots in the afternoon. Lake waters light chop. A slight chance of showers and thunderstorms. .MONDAY NIGHT...South winds 5 to 10 knots, diminishing to around 5 knots after midnight. Lake waters light chop. .TUESDAY...Southeast winds around 5 knots. Lake waters smooth. A slight chance of showers and thunderstorms in the afternoon. .TUESDAY NIGHT...Southeast winds 5 to 10 knots, becoming east after midnight. Lake waters light chop. .WEDNESDAY...East winds 5 to 10 knots. Lake waters light chop. A slight chance of showers and thunderstorms in the afternoon. .WEDNESDAY NIGHT...East winds 5 to 10 knots. Lake waters light chop. A slight chance of showers and thunderstorms. .THURSDAY...East winds 5 to 10 knots. Lake waters light chop. A slight chance of showers and thunderstorms in the afternoon. .THURSDAY NIGHT...East winds 5 to 10 knots. Lake waters light chop. Winds and waves higher in and near thunderstorms. $$ GMZ435-130900- Vermilion and West Cote Blanche Bays- 309 PM CDT Sat Sep 12 2026 .TONIGHT...Southwest winds 5 to 10 knots. Bay waters light chop. .SUNDAY...South winds around 5 knots. Bay waters smooth. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. .SUNDAY NIGHT...South winds around 5 knots. Bay waters smooth. .MONDAY...Southeast winds around 5 knots. Bay waters smooth. A slight chance of showers and thunderstorms in the afternoon. .MONDAY NIGHT...South winds around 5 knots. Bay waters smooth. .TUESDAY...Northeast winds around 5 knots, becoming southeast around 5 knots in the afternoon. Bay waters smooth. .TUESDAY NIGHT...Southeast winds around 5 knots. Bay waters smooth. .WEDNESDAY...East winds 10 to 15 knots. Bay waters choppy. A chance of showers and thunderstorms in the afternoon. .WEDNESDAY NIGHT...East winds 10 to 15 knots. Bay waters choppy. A slight chance of showers and thunderstorms in the evening. .THURSDAY...East winds 10 to 15 knots. Bay waters choppy. A slight chance of showers and thunderstorms in the afternoon. .THURSDAY NIGHT...East winds 5 to 10 knots. Bay waters light chop. Winds and waves higher in and near thunderstorms. $$ GMZ436-130900- Atchafalaya and East Cote Blanche Bays- 309 PM CDT Sat Sep 12 2026 .TONIGHT...Southwest winds 5 to 10 knots. Bay waters light chop. A slight chance of showers and thunderstorms early this evening. A slight chance of showers and thunderstorms late. .SUNDAY...Southwest winds around 5 knots. Bay waters smooth. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. .SUNDAY NIGHT...South winds around 5 knots. Bay waters smooth. A slight chance of showers and thunderstorms in the evening. .MONDAY...Southeast winds around 5 knots. Bay waters smooth. A chance of showers and thunderstorms in the afternoon. .MONDAY NIGHT...South winds around 5 knots. Bay waters smooth. .TUESDAY...Northeast winds around 5 knots, becoming southeast in the afternoon. Bay waters smooth. A slight chance of showers and thunderstorms in the afternoon. .TUESDAY NIGHT...East winds around 5 knots. Bay waters smooth. .WEDNESDAY...East winds 10 to 15 knots. Bay waters choppy. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. .WEDNESDAY NIGHT...East 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. .THURSDAY...East winds 10 to 15 knots. Bay waters choppy. A slight chance of showers and thunderstorms in the afternoon. .THURSDAY NIGHT...East winds 5 to 10 knots. Bay waters light chop. Winds and waves higher in and near thunderstorms. $$ GMZ450-130900- Coastal waters from Cameron LA to High Island TX out 20 NM- 309 PM CDT Sat Sep 12 2026 .TONIGHT...South winds around 10 knots. Seas around 2 feet. Wave Detail: South 2 feet at 5 seconds. .SUNDAY...South winds 5 to 10 knots. Seas around 2 feet. Wave Detail: South 2 feet at 5 seconds. A slight chance of showers and thunderstorms. .SUNDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet. Wave Detail: South 2 feet at 5 seconds. .MONDAY...South winds 5 to 10 knots. Seas around 2 feet. Wave Detail: South 2 feet at 5 seconds. .MONDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet. Wave Detail: South 2 feet at 5 seconds. .TUESDAY...Southeast winds 5 to 10 knots. Seas around 2 feet. Wave Detail: South 2 feet at 5 seconds. .TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas around 2 feet. .WEDNESDAY...East winds 10 to 15 knots. Seas around 2 feet. A chance of showers and thunderstorms. .WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet. A chance of showers with a slight chance of thunderstorms. .THURSDAY...East winds 10 to 15 knots. Seas 2 to 3 feet. A slight chance of thunderstorms. A chance of showers, mainly in the morning. .THURSDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet. Winds and seas higher in and near thunderstorms. $$ GMZ452-130900- Coastal waters from Intracoastal City to Cameron LA out 20 NM- 309 PM CDT Sat Sep 12 2026 .TONIGHT...Southwest winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Southwest 2 feet at 5 seconds. .SUNDAY...South winds around 5 knots. Seas around 2 feet in the morning, then 1 foot or less. Wave Detail: Southwest 1 foot at 5 seconds. A slight chance of showers and thunderstorms. .SUNDAY NIGHT...South winds 5 to 10 knots. Seas 1 foot or less, then around 2 feet after midnight. Wave Detail: South 1 foot at 5 seconds, becoming south 2 feet at 5 seconds. .MONDAY...South winds around 5 knots. Seas 1 foot or less. Wave Detail: South 1 foot at 5 seconds. A slight chance of showers and thunderstorms in the morning. .MONDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet. Wave Detail: South 2 feet at 5 seconds. .TUESDAY...Southeast winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: South 1 foot at 5 seconds. .TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas around 2 feet. A slight chance of showers and thunderstorms after midnight. .WEDNESDAY...East winds 10 to 15 knots. Seas 2 to 3 feet. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. .WEDNESDAY NIGHT...East winds 15 to 20 knots. Seas 2 to 4 feet. A slight chance of thunderstorms. A chance of showers, mainly in the evening. .THURSDAY...East winds 10 to 15 knots. Seas 2 to 4 feet. A slight chance of showers and thunderstorms. .THURSDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet. Winds and seas higher in and near thunderstorms. $$ GMZ455-130900- Coastal waters from Lower Atchafalaya River to Intracoastal City LA out 20 NM- 309 PM CDT Sat Sep 12 2026 .TONIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: Southwest 1 foot at 4 seconds. A slight chance of showers and thunderstorms late. .SUNDAY...Southwest winds around 5 knots. Seas 1 foot or less. Wave Detail: Southwest 1 foot at 5 seconds. A chance of showers and thunderstorms, mainly in the morning. .SUNDAY NIGHT...South winds around 5 knots. Seas 1 foot or less. Wave Detail: Southwest 1 foot at 5 seconds. .MONDAY...Southeast winds around 5 knots. Seas 1 foot or less. Wave Detail: South 1 foot at 5 seconds. A slight chance of showers and thunderstorms in the afternoon. .MONDAY NIGHT...South winds around 5 knots. Seas 1 foot or less. Wave Detail: South 1 foot at 5 seconds. .TUESDAY...Northeast winds around 5 knots, becoming east around 5 knots in the afternoon. Seas 1 foot or less. Wave Detail: South 1 foot at 4 seconds. A slight chance of showers and thunderstorms in the afternoon. .TUESDAY NIGHT...East winds 5 to 10 knots. Seas 1 foot or less. A slight chance of showers and thunderstorms after midnight. .WEDNESDAY...East winds 10 to 15 knots, increasing to 15 to 20 knots in the afternoon. Seas 2 to 3 feet. A chance of showers and thunderstorms. .WEDNESDAY NIGHT...East winds 15 to 20 knots. Seas 2 to 4 feet. A slight chance of thunderstorms. A chance of showers, mainly in the evening. .THURSDAY...East winds 15 to 20 knots, diminishing to 10 to 15 knots in the afternoon. Seas 2 to 3 feet. A slight chance of showers. A slight chance of thunderstorms in the afternoon. .THURSDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet. A slight chance of showers. Winds and seas higher in and near thunderstorms. $$ GMZ470-130900- Coastal waters from Cameron LA to High Island TX from 20 to 60 NM- 309 PM CDT Sat Sep 12 2026 .TONIGHT...South winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Southwest 2 feet at 6 seconds. .SUNDAY...South winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Southwest 2 feet at 6 seconds. A slight chance of showers and thunderstorms. .SUNDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet. Wave Detail: South 2 feet at 5 seconds. .MONDAY...Southeast winds 5 to 10 knots. Seas around 2 feet. Wave Detail: South 2 feet at 6 seconds. .MONDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet. Wave Detail: South 2 feet at 6 seconds. .TUESDAY...Southeast winds 5 to 10 knots. Seas around 2 feet. Wave Detail: South 2 feet at 6 seconds. .TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas around 2 feet. .WEDNESDAY...East winds 10 to 15 knots. Seas 2 to 3 feet. A chance of showers and thunderstorms. .WEDNESDAY NIGHT...East winds around 15 knots. Seas 3 to 5 feet, occasionally to 6 feet. A chance of showers with a slight chance of thunderstorms. .THURSDAY...East winds 15 to 20 knots. Seas 3 to 5 feet, occasionally to 6 feet. A slight chance of thunderstorms. A chance of showers, mainly in the morning. .THURSDAY NIGHT...East winds 10 to 15 knots. Seas 3 to 5 feet, occasionally to 6 feet. A slight chance of showers after midnight. Winds and seas higher in and near thunderstorms. $$ GMZ472-130900- Coastal waters from Intracoastal City to Cameron LA from 20 to 60 NM- 309 PM CDT Sat Sep 12 2026 .TONIGHT...South winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Southwest 2 feet at 6 seconds. .SUNDAY...South winds around 5 knots. Seas around 2 feet. Wave Detail: Southwest 2 feet at 6 seconds. A chance of showers and thunderstorms, mainly in the morning. .SUNDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet. Wave Detail: South 2 feet at 5 seconds. .MONDAY...Southeast winds around 5 knots. Seas around 2 feet. Wave Detail: South 2 feet at 5 seconds. A slight chance of showers and thunderstorms in the morning. .MONDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet. Wave Detail: South 2 feet at 6 seconds. .TUESDAY...Southeast winds around 5 knots, becoming east in the afternoon. Seas around 2 feet. Wave Detail: South 2 feet at 6 seconds. .TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas around 2 feet. A slight chance of showers and thunderstorms after midnight. .WEDNESDAY...East winds 10 to 15 knots, increasing to 15 to 20 knots in the afternoon. Seas 2 to 4 feet. A chance of showers and thunderstorms. .WEDNESDAY NIGHT...East winds 15 to 20 knots. Seas 4 to 6 feet, occasionally to 8 feet. A chance of showers with a slight chance of thunderstorms. .THURSDAY...East winds 15 to 20 knots. Seas 4 to 6 feet, occasionally to 8 feet. A slight chance of thunderstorms. A chance of showers, mainly in the morning. .THURSDAY NIGHT...East winds 15 to 20 knots. Seas 4 to 6 feet, occasionally to 8 feet. A slight chance of showers. Winds and seas higher in and near thunderstorms. $$ GMZ475-130900- Coastal waters from Lower Atchafalaya River to Intracoastal City LA from 20 to 60 NM- 309 PM CDT Sat Sep 12 2026 .TONIGHT...South winds around 5 knots. Seas around 2 feet. Wave Detail: Southwest 1 foot at 5 seconds. A slight chance of showers and thunderstorms late. .SUNDAY...South winds around 5 knots, becoming east around 5 knots in the afternoon. Seas around 2 feet in the morning, then 1 foot or less. Wave Detail: Southwest 1 foot at 5 seconds. A chance of showers and thunderstorms, mainly in the morning. .SUNDAY NIGHT...Southeast winds around 5 knots. Seas around 2 feet. Wave Detail: South 2 feet at 5 seconds. .MONDAY...Southeast winds around 5 knots. Seas around 2 feet. Wave Detail: South 2 feet at 6 seconds. A slight chance of thunderstorms in the morning. A slight chance of showers. .MONDAY NIGHT...Southeast winds around 5 knots. Seas 1 foot or less. Wave Detail: South 1 foot at 6 seconds. .TUESDAY...East winds around 5 knots, increasing to 5 to 10 knots in the afternoon. Seas around 2 feet. Wave Detail: South 2 feet at 6 seconds. .TUESDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet. A slight chance of showers and thunderstorms after midnight. .WEDNESDAY...East winds 10 to 15 knots, increasing to 15 to 20 knots in the afternoon. Seas 2 to 3 feet, building to 3 to 5 feet, occasionally to 6 feet in the afternoon. A chance of showers and thunderstorms. .WEDNESDAY NIGHT...East winds 20 to 25 knots. Seas 5 to 8 feet, occasionally to 10 feet. A slight chance of thunderstorms. A chance of showers, mainly in the evening. .THURSDAY...East winds 15 to 20 knots. Seas 4 to 6 feet, occasionally to 8 feet. A chance of showers. .THURSDAY NIGHT...East winds 20 to 25 knots, diminishing to 15 to 20 knots after midnight. Seas 5 to 7 feet, occasionally to 9 feet. A slight chance of showers in the evening, then a chance of showers after midnight. Winds and seas higher in and near thunderstorms. $$