Coastal Waters Forecast
Issued by NWS Lake Charles, LA
Issued by NWS Lake Charles, LA
938 FZUS54 KLCH 221828 CWFLCH Coastal Waters Forecast National Weather Service Lake Charles LA 127 PM CDT Fri Aug 22 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. GMZ400-230700- 127 PM CDT Fri Aug 22 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... A trough will stall along the coast through tonight. This trough will help bring an increase in chances for showers and thunderstorms during any time of day through Friday. More typical scattered showers and thunderstorms, mainly late night and early morning, and again in the afternoon will be in the forecast over the weekend as the weak front is driven offshore. $$ GMZ430-230700- Sabine Lake- 127 PM CDT Fri Aug 22 2025 .TONIGHT...Northeast winds around 5 knots. Lake waters smooth. Thunderstorms likely this evening. Showers likely. A chance of thunderstorms after midnight. .SATURDAY...Northeast winds around 5 knots. Lake waters smooth. A chance of thunderstorms. Showers likely, mainly in the morning. .SATURDAY NIGHT...South winds around 5 knots, becoming northwest after midnight. Lake waters smooth. A slight chance of showers and thunderstorms. .SUNDAY...North winds around 5 knots, becoming east in the afternoon. Lake waters smooth. A slight chance of thunderstorms. .SUNDAY NIGHT...South winds around 5 knots, becoming west after midnight. Lake waters smooth. A slight chance of showers and thunderstorms early in the evening. .MONDAY...Northeast winds around 5 knots, becoming southeast in the afternoon. Lake waters smooth. .MONDAY NIGHT...Southwest winds around 5 knots. Lake waters smooth. A slight chance of showers after midnight. .TUESDAY...Northeast winds around 5 knots, becoming southeast in the afternoon. Lake waters smooth. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. .TUESDAY NIGHT...Southeast winds around 5 knots, becoming east after midnight. Lake waters smooth. A chance of showers. A chance of thunderstorms early in the evening, then a slight chance of thunderstorms in the late evening and overnight. .WEDNESDAY...East winds 5 to 10 knots. Lake waters light chop. A chance of showers and thunderstorms. .WEDNESDAY NIGHT...East winds around 5 knots. Lake waters smooth. A chance of showers and thunderstorms early in the evening, then a slight chance of showers and thunderstorms in the late evening and overnight. Winds and waves higher in and near thunderstorms. $$ GMZ432-230700- Calcasieu Lake- 127 PM CDT Fri Aug 22 2025 .TONIGHT...Northeast winds around 5 knots. Lake waters smooth. Thunderstorms likely this evening. Showers likely. A chance of thunderstorms after midnight. .SATURDAY...Northeast winds around 5 knots. Lake waters smooth. A chance of thunderstorms. Showers likely early in the morning, then a chance of showers in the late morning and afternoon. .SATURDAY NIGHT...Southwest winds around 5 knots, becoming north after midnight. Lake waters smooth. A slight chance of showers. A slight chance of thunderstorms in the evening. A slight chance of thunderstorms late. .SUNDAY...North winds around 5 knots, becoming east in the afternoon. Lake waters smooth. A slight chance of showers and thunderstorms. .SUNDAY NIGHT...South winds around 5 knots, becoming northwest after midnight. Lake waters smooth. A slight chance of showers and thunderstorms early in the evening. .MONDAY...Northeast winds around 5 knots, becoming southeast in the afternoon. Lake waters smooth. .MONDAY NIGHT...Southwest winds around 5 knots. Lake waters smooth. .TUESDAY...Northeast winds around 5 knots, becoming southeast in the afternoon. Lake waters smooth. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. .TUESDAY NIGHT...Southeast winds around 5 knots, becoming east after midnight. Lake waters light chop. A chance of showers. A chance of thunderstorms early in the evening, then a slight chance of thunderstorms in the late evening and overnight. .WEDNESDAY...East winds 5 to 10 knots. Lake waters light chop. A chance of showers and thunderstorms. .WEDNESDAY NIGHT...East winds around 5 knots. Lake waters smooth. A chance of showers and thunderstorms early in the evening, then a slight chance of showers and thunderstorms in the late evening and overnight. Winds and waves higher in and near thunderstorms. $$ GMZ435-230700- Vermilion and West Cote Blanche Bays- 127 PM CDT Fri Aug 22 2025 .TONIGHT...Northeast winds around 5 knots. Bay waters smooth. Thunderstorms likely this evening. Showers likely. A chance of thunderstorms after midnight. .SATURDAY...North winds around 5 knots, becoming west around 5 knots in the afternoon. Bay waters smooth. A chance of thunderstorms. Showers likely, mainly in the morning. .SATURDAY NIGHT...Southwest winds around 5 knots, becoming northwest after midnight. Bay waters smooth. A slight chance of showers and thunderstorms. .SUNDAY...North winds around 5 knots, becoming west in the afternoon. Bay waters smooth. A chance of showers and thunderstorms until late afternoon, then a slight chance of showers and thunderstorms late. .SUNDAY NIGHT...Southwest winds around 5 knots, becoming northwest after midnight. Bay waters smooth. A slight chance of showers and thunderstorms early in the evening. .MONDAY...North winds 5 to 10 knots, becoming southeast in the afternoon. Bay waters light chop. A slight chance of showers early in the afternoon. A slight chance of showers and thunderstorms late. .MONDAY NIGHT...Southwest winds around 5 knots. Bay waters smooth. .TUESDAY...Northeast winds 5 to 10 knots, becoming south in the afternoon. Bay waters light chop. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. .TUESDAY NIGHT...Southeast winds around 5 knots, becoming east after midnight. Bay waters light chop. A chance of showers. A chance of thunderstorms early in the evening, then a slight chance of thunderstorms in the late evening and overnight. .WEDNESDAY...East winds 5 to 10 knots. Bay waters light chop. A chance of showers and thunderstorms. .WEDNESDAY NIGHT...East winds 5 to 10 knots. Bay waters light chop. A chance of showers and thunderstorms early in the evening, then a slight chance of showers and thunderstorms in the late evening and overnight. Winds and waves higher in and near thunderstorms. $$ GMZ436-230700- Atchafalaya and East Cote Blanche Bays- 127 PM CDT Fri Aug 22 2025 .TONIGHT...North winds around 5 knots. Bay waters smooth. Thunderstorms likely this evening. Showers likely. A chance of thunderstorms after midnight. .SATURDAY...North winds around 5 knots, becoming west in the afternoon. Bay waters smooth. Showers likely. A chance of thunderstorms in the morning, then thunderstorms likely in the afternoon. .SATURDAY NIGHT...Southwest winds around 5 knots, becoming west after midnight. Bay waters smooth. A chance of showers and thunderstorms. .SUNDAY...North winds around 5 knots, becoming west around 5 knots in the afternoon. Bay waters smooth. A chance of showers and thunderstorms. .SUNDAY NIGHT...Southwest winds around 5 knots, becoming northwest after midnight. Bay waters smooth. A chance of showers and thunderstorms early in the evening. A slight chance of showers after midnight. A slight chance of thunderstorms late. .MONDAY...North winds 5 to 10 knots, becoming southwest in the afternoon. Bay waters light chop. A slight chance of showers and thunderstorms. .MONDAY NIGHT...Southwest winds around 5 knots. Bay waters smooth. A slight chance of showers and thunderstorms early in the evening. A slight chance of showers and thunderstorms after midnight. .TUESDAY...Northeast winds 5 to 10 knots, becoming south in the afternoon. Bay waters light chop. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. .TUESDAY NIGHT...Southeast winds around 5 knots, becoming east after midnight. Bay waters light chop. A chance of showers. .WEDNESDAY...East winds 5 to 10 knots. Bay waters light chop. A chance of showers and thunderstorms. .WEDNESDAY NIGHT...East winds around 5 knots. Bay waters smooth. A chance of showers and thunderstorms early in the evening, then a slight chance of showers and thunderstorms in the late evening and overnight. Winds and waves higher in and near thunderstorms. $$ GMZ450-230700- Coastal waters from Cameron LA to High Island TX out 20 NM- 127 PM CDT Fri Aug 22 2025 .TONIGHT...East winds around 5 knots. Seas 1 foot or less. A chance of showers this evening. Thunderstorms likely. Showers likely after midnight. .SATURDAY...Northeast winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: Northeast 1 foot at 2 seconds. Showers with thunderstorms likely in the morning, then a chance of showers and thunderstorms in the afternoon. .SATURDAY NIGHT...Southeast winds around 5 knots, becoming northeast after midnight. Seas 1 foot or less. Wave Detail: East 1 foot at 2 seconds. A chance of showers. A slight chance of thunderstorms until early morning, then a chance of thunderstorms late. .SUNDAY...North winds 5 to 10 knots, becoming east in the afternoon. Seas 1 foot or less. Wave Detail: Northwest 1 foot at 2 seconds. A chance of showers and thunderstorms until late afternoon, then a slight chance of showers and thunderstorms late. .SUNDAY NIGHT...South winds 5 to 10 knots, becoming west after midnight. Seas 1 foot or less. Wave Detail: South 1 foot at 3 seconds. A slight chance of showers after midnight. A slight chance of showers and thunderstorms late. .MONDAY...Northeast winds 5 to 10 knots, becoming southeast in the afternoon. Seas 1 foot or less. Wave Detail: Northwest 1 foot at 2 seconds and southeast 1 foot at 5 seconds. A slight chance of showers and thunderstorms until late afternoon. .MONDAY NIGHT...South winds 5 to 10 knots. Seas 1 foot or less. A slight chance of showers after midnight. .TUESDAY...Southeast winds 5 to 10 knots. Seas 1 foot or less. A chance of showers and thunderstorms. .TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas around 2 feet. A chance of showers. A chance of thunderstorms early in the evening, then a slight chance of thunderstorms in the late evening and overnight. .WEDNESDAY...East winds around 10 knots. Seas around 2 feet in the morning, then 1 foot or less. A chance of showers and thunderstorms. .WEDNESDAY NIGHT...East winds around 10 knots. Seas around 2 feet. A chance of showers. A chance of thunderstorms early in the evening, then a slight chance of thunderstorms in the late evening and overnight. Winds and seas higher in and near thunderstorms. $$ GMZ452-230700- Coastal waters from Intracoastal City to Cameron LA out 20 NM- 127 PM CDT Fri Aug 22 2025 .TONIGHT...East winds around 5 knots. Seas 1 foot or less. A chance of showers and thunderstorms this evening, then showers and thunderstorms likely after midnight. .SATURDAY...Northeast winds around 5 knots. Seas 1 foot or less. Showers and thunderstorms likely, mainly in the morning. .SATURDAY NIGHT...South winds around 5 knots, becoming west after midnight. Seas 1 foot or less. Wave Detail: West 1 foot at 2 seconds. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. .SUNDAY...North winds 5 to 10 knots, becoming southeast in the afternoon. Seas 1 foot or less. Wave Detail: Northwest 1 foot at 2 seconds. A chance of showers and thunderstorms until late afternoon, then a slight chance of showers and thunderstorms late. .SUNDAY NIGHT...Southwest winds 5 to 10 knots, becoming west after midnight. Seas 1 foot or less. Wave Detail: South 1 foot at 4 seconds. A slight chance of showers and thunderstorms early in the evening. A slight chance of showers after midnight. A slight chance of thunderstorms late. .MONDAY...Northeast winds 5 to 10 knots, becoming southeast in the afternoon. Seas 1 foot or less. Wave Detail: Northwest 1 foot at 3 seconds and southeast 1 foot at 5 seconds. A slight chance of showers and thunderstorms until late afternoon. .MONDAY NIGHT...South winds 5 to 10 knots. Seas 1 foot or less. A slight chance of showers after midnight. A slight chance of showers and thunderstorms late. .TUESDAY...Southeast winds 5 to 10 knots. Seas 1 foot or less. A chance of showers. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. .TUESDAY NIGHT...South winds 5 to 10 knots, becoming east after midnight. Seas 1 foot or less, then around 2 feet after midnight. A chance of showers. A chance of thunderstorms early in the evening, then a slight chance of thunderstorms in the late evening and overnight. .WEDNESDAY...East winds around 10 knots. Seas around 2 feet in the morning, then 1 foot or less. A chance of showers and thunderstorms. .WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas 1 foot or less. A chance of thunderstorms in the evening. A chance of showers. A slight chance of thunderstorms after midnight. Winds and seas higher in and near thunderstorms. $$ GMZ455-230700- Coastal waters from Lower Atchafalaya River to Intracoastal City LA out 20 NM- 127 PM CDT Fri Aug 22 2025 .TONIGHT...Northeast winds around 5 knots, becoming southwest after midnight. Seas 1 foot or less. A chance of showers and thunderstorms this evening. Showers and thunderstorms likely after midnight. .SATURDAY...Northwest winds around 5 knots. Seas 1 foot or less. Showers and thunderstorms likely, mainly in the morning. .SATURDAY NIGHT...West winds around 5 knots. Seas 1 foot or less. Wave Detail: Southwest 1 foot at 2 seconds. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. .SUNDAY...Northwest winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: West 1 foot at 2 seconds. A chance of showers and thunderstorms until late afternoon, then a slight chance of showers and thunderstorms late. .SUNDAY NIGHT...West winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: Southwest 1 foot at 3 seconds. A slight chance of showers and thunderstorms early in the evening. A slight chance of showers and thunderstorms after midnight. .MONDAY...North winds 5 to 10 knots, becoming southeast in the afternoon. Seas 1 foot or less. Wave Detail: West 1 foot at 3 seconds. A slight chance of showers and thunderstorms. .MONDAY NIGHT...Southwest winds around 5 knots. Seas 1 foot or less. A slight chance of showers and thunderstorms early in the evening. A slight chance of showers and thunderstorms after midnight. .TUESDAY...Northeast winds 5 to 10 knots, becoming southeast in the afternoon. Seas 1 foot or less. A chance of showers. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. .TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 foot or less. A chance of showers. .WEDNESDAY...East winds 5 to 10 knots. Seas 1 foot or less. A chance of showers and thunderstorms. .WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas 1 foot or less. A chance of showers and thunderstorms early in the evening, then a slight chance of showers and thunderstorms late in the evening. A chance of showers and thunderstorms after midnight. Winds and seas higher in and near thunderstorms. $$ GMZ470-230700- Coastal waters from Cameron LA to High Island TX from 20 to 60 NM- 127 PM CDT Fri Aug 22 2025 .TONIGHT...East winds around 5 knots, becoming southeast after midnight. Seas 1 foot or less. Wave Detail: Northeast 1 foot at 2 seconds. A chance of showers with a slight chance of thunderstorms this evening, then showers likely with a chance of thunderstorms after midnight. .SATURDAY...North winds around 5 knots, becoming northeast in the afternoon. Seas 1 foot or less. Showers with thunderstorms likely in the morning, then a chance of showers and thunderstorms in the afternoon. .SATURDAY NIGHT...East winds around 5 knots, becoming south after midnight. Seas 1 foot or less. Wave Detail: South 1 foot at 2 seconds and northeast 1 foot at 2 seconds. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. .SUNDAY...North winds 5 to 10 knots, becoming east in the afternoon. Seas 1 foot or less. Wave Detail: Northwest 1 foot at 3 seconds. Showers likely in the morning. A chance of thunderstorms. A chance of showers in the afternoon. .SUNDAY 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 early in the evening. A slight chance of showers after midnight. A slight chance of thunderstorms late. .MONDAY...Northeast winds 5 to 10 knots, becoming east in the afternoon. Seas 1 foot or less. Wave Detail: Northwest 1 foot at 3 seconds and southeast 1 foot at 6 seconds. A slight chance of showers and thunderstorms until late afternoon. .MONDAY NIGHT...South winds around 5 knots. Seas around 2 feet. A chance of showers with a slight chance of thunderstorms after midnight. .TUESDAY...Southeast winds 5 to 10 knots. Seas around 2 feet in the morning, then 1 foot or less. A chance of showers. A chance of thunderstorms until late afternoon, then a slight chance of thunderstorms late. .TUESDAY NIGHT...Southeast winds around 10 knots. Seas around 2 feet. A chance of showers with a slight chance of thunderstorms. .WEDNESDAY...East winds around 10 knots. Seas around 2 feet. A chance of showers and thunderstorms. .WEDNESDAY NIGHT...East winds around 10 knots. Seas around 2 feet. A chance of showers. A chance of thunderstorms early in the evening, then a slight chance of thunderstorms in the late evening and overnight. Winds and seas higher in and near thunderstorms. $$ GMZ472-230700- Coastal waters from Intracoastal City to Cameron LA from 20 to 60 NM- 127 PM CDT Fri Aug 22 2025 .TONIGHT...East winds around 5 knots, becoming south after midnight. Seas 1 foot or less. A chance of showers and thunderstorms this evening, then showers and thunderstorms likely after midnight. .SATURDAY...Northwest winds around 5 knots, becoming northeast in the afternoon. Seas 1 foot or less. Showers with thunderstorms likely in the morning, then a chance of showers and thunderstorms in the afternoon. .SATURDAY NIGHT...East winds around 5 knots, becoming southwest after midnight. Seas 1 foot or less. Wave Detail: Southwest 1 foot at 2 seconds. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. .SUNDAY...North winds 5 to 10 knots, becoming northeast in the afternoon. Seas 1 foot or less. Wave Detail: West 1 foot at 2 seconds and southeast 1 foot at 4 seconds. Thunderstorms likely in the morning. Showers likely. A chance of thunderstorms in the afternoon. .SUNDAY NIGHT...South winds around 5 knots, becoming west after midnight. Seas 1 foot or less. Wave Detail: South 1 foot at 3 seconds and southeast 1 foot at 6 seconds. A chance of showers with a slight chance of thunderstorms early in the evening. A slight chance of showers and thunderstorms after midnight. .MONDAY...North winds 5 to 10 knots, becoming east in the afternoon. Seas 1 foot or less. Wave Detail: Northwest 1 foot at 2 seconds and south 1 foot at 5 seconds. A chance of showers and thunderstorms until late afternoon, then a slight chance of showers late. .MONDAY NIGHT...South winds around 5 knots. Seas around 2 feet. A chance of showers with a slight chance of thunderstorms after midnight. .TUESDAY...Southeast winds 5 to 10 knots. Seas 1 foot or less. A chance of showers with a slight chance of thunderstorms. .TUESDAY NIGHT...Southeast winds around 10 knots. Seas around 2 feet. A chance of showers with a slight chance of thunderstorms. .WEDNESDAY...East winds around 10 knots. Seas around 2 feet in the morning, then 1 foot or less. A chance of showers and thunderstorms. .WEDNESDAY NIGHT...East winds around 10 knots. Seas around 2 feet. A chance of showers. Winds and seas higher in and near thunderstorms. $$ GMZ475-230700- Coastal waters from Lower Atchafalaya River to Intracoastal City LA from 20 to 60 NM- 127 PM CDT Fri Aug 22 2025 .TONIGHT...South winds around 5 knots. Seas 1 foot or less. 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. .SATURDAY...West winds 5 to 10 knots, becoming northwest in the afternoon. Seas 1 foot or less. Wave Detail: Southwest 1 foot at 2 seconds. Showers with thunderstorms likely in the morning, then a chance of showers and thunderstorms in the afternoon. .SATURDAY NIGHT...Southwest winds around 5 knots. Seas 1 foot or less. Wave Detail: West 1 foot at 3 seconds. A chance of showers and thunderstorms early in the evening, then a slight chance of showers and thunderstorms late in the evening. Showers likely with a chance of thunderstorms after midnight. .SUNDAY...Northwest winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: West 1 foot at 3 seconds and south 1 foot at 5 seconds. Showers and thunderstorms likely, mainly in the morning. .SUNDAY NIGHT...West winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: Southwest 1 foot at 3 seconds and south 1 foot at 6 seconds. A chance of showers and thunderstorms. .MONDAY...North winds 5 to 10 knots, becoming east in the afternoon. Seas 1 foot or less, then around 2 feet in the afternoon. Wave Detail: West 1 foot at 3 seconds and south 1 foot at 6 seconds. A chance of showers and thunderstorms until late afternoon, then a slight chance of showers and thunderstorms late. .MONDAY NIGHT...South winds around 5 knots. Seas around 2 feet in the evening, then 1 foot or less. A slight chance of thunderstorms early in the evening. A slight chance of showers in the evening. A chance of showers with a slight chance of thunderstorms after midnight. .TUESDAY...North winds 5 to 10 knots, becoming east in the afternoon. Seas 1 foot or less. A chance of showers with a slight chance of thunderstorms. .TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 foot or less. A chance of showers with a slight chance of thunderstorms. .WEDNESDAY...East winds 5 to 10 knots. Seas 1 foot or less. A chance of showers and thunderstorms. .WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet. A chance of showers. Winds and seas higher in and near thunderstorms. $$