Coastal Waters Forecast
Issued by NWS Lake Charles, LA
Issued by NWS Lake Charles, LA
380 FZUS54 KLCH 091807 CWFLCH Coastal Waters Forecast National Weather Service Lake Charles LA 107 PM CDT Sat Aug 9 2025 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. GMZ400-100700- 107 PM CDT Sat Aug 9 2025 .Synopsis for Lower Atchafalaya River LA to High Island TX out 60 NM including Sabine and Calcasieu Lakes and Vermilion and Cote Blanche Bays... Mainly light easterly winds with low seas are expected through Monday as a weak inverted trough moves across the northwest Gulf. Shower and thunderstorm activity is expected to increase as moisture associated with the trough also increase. By mid week, a surface will ridge into the coastal waters from the east providing light onshore winds with relative low seas continuing. $$ GMZ430-100700- Sabine Lake- 107 PM CDT Sat Aug 9 2025 .TONIGHT...Southeast winds 5 to 10 knots, becoming east after midnight. Lake waters light chop. A slight chance of showers and thunderstorms early this evening. A slight chance of showers and thunderstorms after midnight, then a chance of showers and thunderstorms late. .SUNDAY...East winds around 5 knots. Lake waters smooth. A chance of showers and thunderstorms. .SUNDAY NIGHT...Southeast winds around 5 knots. Lake waters smooth. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. .MONDAY...Northeast winds around 5 knots, becoming southeast around 5 knots in the afternoon. Lake waters smooth. A chance of showers and thunderstorms in the morning, then showers and thunderstorms likely in the afternoon. .MONDAY NIGHT...South winds around 5 knots in the evening, becoming light and variable. Lake waters smooth. A slight chance of showers and thunderstorms. .TUESDAY...West winds around 5 knots, becoming south in the afternoon. Lake waters smooth. A chance of showers and thunderstorms. .TUESDAY NIGHT...South winds around 5 knots. Lake waters smooth. A slight chance of showers in the evening, then a chance of showers with a slight chance of thunderstorms after midnight. .WEDNESDAY...West winds around 5 knots, becoming south around 5 knots in the afternoon. Lake waters smooth. A chance of showers and thunderstorms. .WEDNESDAY NIGHT...South winds around 5 knots. Lake waters smooth. A slight chance of showers and thunderstorms. .THURSDAY...South winds around 5 knots, increasing to 5 to 10 knots in the afternoon. Lake waters light chop. A chance of showers and thunderstorms. .THURSDAY NIGHT...South winds 5 to 10 knots. Lake waters light chop. Winds and waves higher in and near thunderstorms. $$ GMZ432-100700- Calcasieu Lake- 107 PM CDT Sat Aug 9 2025 .TONIGHT...Southeast winds around 5 knots, becoming east late. Lake waters smooth. A slight chance of showers and thunderstorms early this evening. A slight chance of showers and thunderstorms after midnight, then a chance of showers and thunderstorms late. .SUNDAY...East winds 5 to 10 knots. Lake waters light chop. A chance of showers and thunderstorms in the morning, then showers and thunderstorms likely in the afternoon. .SUNDAY NIGHT...Southeast winds around 5 knots. Lake waters smooth. A chance of showers and thunderstorms. .MONDAY...Northeast winds around 5 knots, becoming southeast in the afternoon. Lake waters smooth. A chance of showers and thunderstorms in the morning, then showers and thunderstorms likely in the afternoon. .MONDAY NIGHT...South winds around 5 knots. Lake waters smooth. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. .TUESDAY...West winds around 5 knots, becoming south in the afternoon. Lake waters smooth. A chance of showers and thunderstorms. .TUESDAY NIGHT...South winds around 5 knots. Lake waters smooth. A slight chance of thunderstorms. A slight chance of showers in the evening, then a chance of showers after midnight. .WEDNESDAY...Southwest winds around 5 knots, becoming south in the afternoon. Lake waters light chop. A chance of showers and thunderstorms. .WEDNESDAY NIGHT...South winds 5 to 10 knots. Lake waters light chop. A slight chance of showers and thunderstorms. .THURSDAY...South winds 5 to 10 knots. Lake waters light chop. A chance of showers and thunderstorms. .THURSDAY NIGHT...South 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. $$ GMZ435-100700- Vermilion and West Cote Blanche Bays- 107 PM CDT Sat Aug 9 2025 .TONIGHT...Southeast winds 5 to 10 knots, becoming east late. Bay waters light chop. A chance of showers and thunderstorms early this evening. A slight chance of showers and thunderstorms after midnight, then a chance of showers and thunderstorms late. .SUNDAY...East winds 5 to 10 knots. Bay waters light chop. A chance of showers and thunderstorms in the morning, then showers and thunderstorms likely in the afternoon. .SUNDAY NIGHT...East winds around 5 knots. Bay waters smooth. A chance of showers and thunderstorms. .MONDAY...Northeast winds around 5 knots, becoming southeast in the afternoon. Bay waters smooth. A chance of showers and thunderstorms in the morning, then showers and thunderstorms likely in the afternoon. .MONDAY NIGHT...South winds around 5 knots. Bay waters smooth. A chance of showers and thunderstorms. .TUESDAY...East winds around 5 knots, becoming southeast in the afternoon. Bay waters smooth. Showers likely. A chance of thunderstorms in the morning, then thunderstorms likely in the afternoon. .TUESDAY NIGHT...South winds around 5 knots. Bay waters smooth. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. .WEDNESDAY...South winds around 5 knots. Bay waters smooth. Showers likely with a chance of thunderstorms in the morning, then showers and thunderstorms likely in the afternoon. .WEDNESDAY NIGHT...South winds 5 to 10 knots. Bay waters light chop. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. .THURSDAY...South winds around 5 knots. Bay waters smooth. A chance of showers and thunderstorms in the morning, then showers and thunderstorms likely in the afternoon. .THURSDAY NIGHT...South winds 5 to 10 knots. Bay waters light chop. A slight chance of showers and thunderstorms. Winds and waves higher in and near thunderstorms. $$ GMZ436-100700- Atchafalaya and East Cote Blanche Bays- 107 PM CDT Sat Aug 9 2025 .TONIGHT...East winds 5 to 10 knots. Bay waters light chop. A chance of showers and thunderstorms early this evening. A slight chance of showers and thunderstorms late this evening, then a chance of showers and thunderstorms after midnight. .SUNDAY...East winds 5 to 10 knots. Bay waters light chop. Showers and thunderstorms likely. .SUNDAY NIGHT...East winds around 5 knots. Bay waters smooth. A chance of showers and thunderstorms. .MONDAY...Northeast winds around 5 knots, becoming southeast in the afternoon. Bay waters smooth. Showers and thunderstorms likely. .MONDAY NIGHT...South 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. .TUESDAY...Southeast winds around 5 knots. Bay waters smooth. Thunderstorms likely. Showers likely. .TUESDAY NIGHT...South 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. .WEDNESDAY...South winds around 5 knots. Bay waters smooth. Showers likely with a chance of thunderstorms in the morning, then showers and thunderstorms likely in the afternoon. .WEDNESDAY NIGHT...South 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. .THURSDAY...South winds around 5 knots. Bay waters smooth. Showers likely. A chance of thunderstorms in the morning, then thunderstorms likely in the afternoon. .THURSDAY NIGHT...South winds around 5 knots. Bay waters smooth. A slight chance of showers and thunderstorms. Winds and waves higher in and near thunderstorms. $$ GMZ450-100700- Coastal waters from Cameron LA to High Island TX out 20 NM- 107 PM CDT Sat Aug 9 2025 .TONIGHT...Southeast winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Southeast 2 feet at 4 seconds. A slight chance of showers and thunderstorms early this evening. A slight chance of showers and thunderstorms after midnight, then a chance of showers and thunderstorms late. .SUNDAY...East winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: East 1 foot at 4 seconds. A chance of showers and thunderstorms. .SUNDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: Southeast 1 foot at 4 seconds. A chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. .MONDAY...East winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: Southeast 1 foot at 3 seconds. A chance of thunderstorms. Showers likely, mainly in the morning. .MONDAY NIGHT...South winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: South 1 foot at 4 seconds. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. .TUESDAY...West winds around 5 knots, becoming south in the afternoon. Seas 1 foot or less. Wave Detail: South 1 foot at 3 seconds. A chance of showers and thunderstorms, mainly in the morning. .TUESDAY NIGHT...South winds 5 to 10 knots. Seas 1 foot or less. A slight chance of showers in the evening, then a chance of showers and thunderstorms after midnight. .WEDNESDAY...Southwest winds 5 to 10 knots, becoming south in the afternoon. Seas 1 foot or less. A chance of showers and thunderstorms. .WEDNESDAY NIGHT...South winds around 10 knots. Seas around 2 feet. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. .THURSDAY...South winds 5 to 10 knots. Seas around 2 feet. A chance of showers and thunderstorms. .THURSDAY NIGHT...South winds around 10 knots. Seas around 2 feet. A slight chance of showers and thunderstorms after midnight. Winds and seas higher in and near thunderstorms. $$ GMZ452-100700- Coastal waters from Intracoastal City to Cameron LA out 20 NM- 107 PM CDT Sat Aug 9 2025 .TONIGHT...Southeast winds around 10 knots. Seas around 2 feet. Wave Detail: Southeast 2 feet at 3 seconds. A chance of showers and thunderstorms early this evening. A slight chance of showers and thunderstorms late this evening and early morning, then a chance of showers and thunderstorms late. .SUNDAY...East winds around 10 knots. Seas around 2 feet in the morning, then 1 foot or less. Wave Detail: East 1 foot at 4 seconds, becoming east 1 foot at 3 seconds. Showers and thunderstorms likely, mainly in the morning. .SUNDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: Southeast 1 foot at 3 seconds. A chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. .MONDAY...East winds around 5 knots, becoming southeast in the afternoon. Seas 1 foot or less. Wave Detail: Southeast 1 foot at 3 seconds. Showers and thunderstorms likely, mainly in the morning. .MONDAY NIGHT...South winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: South 1 foot at 3 seconds. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. .TUESDAY...South winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: South 1 foot at 3 seconds. A chance of thunderstorms. Showers likely, mainly in the morning. .TUESDAY NIGHT...South winds 5 to 10 knots. Seas 1 foot or less, then around 2 feet after midnight. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. .WEDNESDAY...South winds 5 to 10 knots. Seas around 2 feet in the morning, then 1 foot or less. A chance of thunderstorms. Showers likely, mainly in the morning. .WEDNESDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. .THURSDAY...South winds 5 to 10 knots. Seas around 2 feet. A chance of thunderstorms. Showers likely, mainly in the morning. .THURSDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet. A slight chance of showers and thunderstorms after midnight. Winds and seas higher in and near thunderstorms. $$ GMZ455-100700- Coastal waters from Lower Atchafalaya River to Intracoastal City LA out 20 NM- 107 PM CDT Sat Aug 9 2025 .TONIGHT...East winds 5 to 10 knots. Seas around 2 feet. Wave Detail: East 1 foot at 3 seconds. A chance of showers this evening. A chance of thunderstorms. Showers likely after midnight. .SUNDAY...East winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: East 1 foot at 3 seconds. Showers and thunderstorms likely, mainly in the morning. .SUNDAY NIGHT...Southeast winds around 5 knots. Seas 1 foot or less. Wave Detail: East 1 foot at 3 seconds. A chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. .MONDAY...East winds around 5 knots. Seas 1 foot or less. Wave Detail: Southeast 1 foot at 3 seconds. Showers and thunderstorms likely, mainly in the morning. .MONDAY NIGHT...South winds around 5 knots. Seas 1 foot or less. Wave Detail: Southeast 1 foot at 3 seconds. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. .TUESDAY...Southeast winds around 5 knots. Seas 1 foot or less. Wave Detail: South 1 foot at 3 seconds. Showers and thunderstorms likely, mainly in the morning. .TUESDAY NIGHT...South winds around 5 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. .WEDNESDAY...South winds around 5 knots. Seas 1 foot or less. A chance of thunderstorms. Showers likely, mainly in the morning. .WEDNESDAY NIGHT...South 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. .THURSDAY...South winds around 5 knots. Seas 1 foot or less. A chance of thunderstorms. Showers likely, mainly in the morning. .THURSDAY NIGHT...South winds around 5 knots. Seas 1 foot or less. A slight chance of showers and thunderstorms. Winds and seas higher in and near thunderstorms. $$ GMZ470-100700- Coastal waters from Cameron LA to High Island TX from 20 to 60 NM- 107 PM CDT Sat Aug 9 2025 .TONIGHT...Southeast winds 5 to 10 knots. Seas around 2 feet. Wave Detail: East 2 feet at 4 seconds. A slight chance of showers and thunderstorms early this evening. A slight chance of showers and thunderstorms after midnight, then a chance of showers and thunderstorms late. .SUNDAY...East winds 5 to 10 knots. Seas around 2 feet. Wave Detail: East 1 foot at 4 seconds. A chance of thunderstorms. Showers likely, mainly in the morning. .SUNDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: East 1 foot at 4 seconds. A chance of showers with a slight chance of thunderstorms in the evening, then showers likely with a chance of thunderstorms after midnight. .MONDAY...South winds around 5 knots, becoming southeast in the afternoon. Seas 1 foot or less. Wave Detail: East 1 foot at 4 seconds. A chance of thunderstorms. Showers likely, mainly in the morning. .MONDAY NIGHT...South winds around 5 knots. Seas 1 foot or less. Wave Detail: Southeast 1 foot at 4 seconds. A chance of showers and thunderstorms after midnight. .TUESDAY...Southwest winds around 5 knots, becoming southeast in the afternoon. Seas 1 foot or less. Wave Detail: East 1 foot at 3 seconds and southwest 1 foot at 4 seconds. A chance of showers and thunderstorms, mainly in the morning. .TUESDAY NIGHT...South winds 5 to 10 knots. Seas 1 foot or less, then around 2 feet after midnight. A chance of showers and thunderstorms after midnight. .WEDNESDAY...South winds around 5 knots. Seas around 2 feet. Showers likely with a chance of thunderstorms in the morning, then a chance of showers with a slight chance of thunderstorms in the afternoon. .WEDNESDAY NIGHT...South winds around 10 knots. Seas around 2 feet. A chance of showers and thunderstorms after midnight. .THURSDAY...South winds around 10 knots. Seas around 2 feet. A chance of thunderstorms. Showers likely, mainly in the morning. .THURSDAY NIGHT...South winds around 10 knots. Seas around 2 feet. A slight chance of showers and thunderstorms after midnight. Winds and seas higher in and near thunderstorms. $$ GMZ472-100700- Coastal waters from Intracoastal City to Cameron LA from 20 to 60 NM- 107 PM CDT Sat Aug 9 2025 .TONIGHT...East winds 5 to 10 knots. Seas around 2 feet. Wave Detail: East 2 feet at 4 seconds. A chance of showers this evening. A chance of thunderstorms. Showers likely after midnight. .SUNDAY...East winds 5 to 10 knots. Seas around 2 feet in the morning, then 1 foot or less. Wave Detail: East 2 feet at 4 seconds, becoming east 1 foot at 4 seconds. Showers and thunderstorms likely, mainly in the morning. .SUNDAY NIGHT...East winds 5 to 10 knots, becoming southeast after midnight. Seas 1 foot or less. Wave Detail: East 1 foot at 4 seconds. A chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. .MONDAY...Southwest winds around 5 knots, becoming east in the afternoon. Seas 1 foot or less. Wave Detail: Southeast 1 foot at 3 seconds. A chance of thunderstorms. Showers likely, mainly in the morning. .MONDAY NIGHT...South winds around 5 knots. Seas 1 foot or less. Wave Detail: South 1 foot at 4 seconds. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. .TUESDAY...Southwest winds around 5 knots, becoming southeast in the afternoon. Seas 1 foot or less. Wave Detail: South 1 foot at 4 seconds. A chance of thunderstorms. Showers likely, mainly in the morning. .TUESDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. .WEDNESDAY...South winds 5 to 10 knots. Seas around 2 feet. A chance of thunderstorms. Showers likely, mainly in the morning. .WEDNESDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. .THURSDAY...South winds 5 to 10 knots. Seas around 2 feet. A chance of thunderstorms. Showers likely, mainly in the morning. .THURSDAY NIGHT...South 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. $$ GMZ475-100700- Coastal waters from Lower Atchafalaya River to Intracoastal City LA from 20 to 60 NM- 107 PM CDT Sat Aug 9 2025 .TONIGHT...East winds 10 to 15 knots. Seas around 2 feet. Wave Detail: East 2 feet at 4 seconds. A chance of thunderstorms. A chance of showers until early morning, then showers likely late. .SUNDAY...East winds 5 to 10 knots. Seas around 2 feet in the morning, then 1 foot or less. Wave Detail: East 2 feet at 4 seconds, becoming east 1 foot at 5 seconds. Showers and thunderstorms likely, mainly in the morning. .SUNDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: East 1 foot at 4 seconds. A chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. .MONDAY...West winds around 5 knots, becoming east in the afternoon. Seas 1 foot or less. Wave Detail: Southeast 1 foot at 3 seconds. A chance of thunderstorms. Showers, mainly in the morning. .MONDAY NIGHT...South winds around 5 knots. Seas 1 foot or less. Wave Detail: Southeast 1 foot at 3 seconds. A slight chance of showers and thunderstorms in the evening, then showers likely with a chance of thunderstorms after midnight. .TUESDAY...Southeast winds around 5 knots. Seas 1 foot or less, then around 2 feet in the afternoon. Wave Detail: South 1 foot at 3 seconds, becoming southeast 1 foot at 4 seconds. Showers and thunderstorms likely, mainly in the morning. .TUESDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet. A slight chance of showers and thunderstorms in the evening, then showers likely with a chance of thunderstorms after midnight. .WEDNESDAY...South winds around 5 knots. Seas around 2 feet. A chance of thunderstorms. Showers, mainly in the morning. .WEDNESDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet. A chance of showers and thunderstorms after midnight. .THURSDAY...South winds 5 to 10 knots. Seas around 2 feet in the morning, then 1 foot or less. A chance of thunderstorms. Showers likely, mainly in the morning. .THURSDAY NIGHT...South 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. $$