Coastal Waters Forecast
Issued by NWS Lake Charles, LA
Issued by NWS Lake Charles, LA
638 FZUS54 KLCH 291748 CWFLCH Coastal Waters Forecast National Weather Service Lake Charles LA 1247 PM CDT Fri Aug 29 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. GMZ400-300600- 1247 PM CDT Fri Aug 29 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... Scattered showers and storms ongoing near the coast should continue to advance through the coastal waters today ahead of a slowly southward advancing frontal boundary. This front will slide toward the coast Saturday morning which should bring about widespread shower and thunderstorm activity. Winds will turn offshore from Saturday afternoon through the middle of next week as the frontal boundary moves off the coast and into the Gulf waters. $$ GMZ430-300600- Sabine Lake- 1247 PM CDT Fri Aug 29 2025 .TONIGHT...Southeast winds around 5 knots. Lake waters smooth. A chance of showers this evening. A chance of thunderstorms. Showers likely after midnight. .SATURDAY...Northeast winds around 5 knots. Lake waters smooth. Showers likely with a chance of thunderstorms in the morning, then showers and thunderstorms likely in the afternoon. .SATURDAY NIGHT...East winds around 5 knots. Lake waters smooth. A chance of showers. .SUNDAY...Northeast winds around 5 knots. Lake waters smooth. A chance of showers and thunderstorms. .SUNDAY NIGHT...Northeast winds around 5 knots. Lake waters smooth. A chance of showers and thunderstorms. .MONDAY...Northeast winds around 5 knots. Lake waters smooth. A chance of showers and thunderstorms in the morning, then showers and thunderstorms likely in the afternoon. .MONDAY NIGHT...East winds around 5 knots, becoming north around 5 knots after midnight. Lake waters smooth. Showers and thunderstorms likely early in the evening, then a chance of showers with a slight chance of thunderstorms in the late evening and overnight. .TUESDAY...North winds around 5 knots. Lake waters smooth. A chance of showers and thunderstorms. .TUESDAY NIGHT...Southwest winds around 5 knots, becoming west after midnight. Lake waters smooth. A chance of showers and thunderstorms early in the evening, then a slight chance of showers in the late evening and early morning. .WEDNESDAY...Northwest winds around 5 knots. Lake waters smooth. .WEDNESDAY NIGHT...North winds around 5 knots. Lake waters smooth. Winds and waves higher in and near thunderstorms. $$ GMZ432-300600- Calcasieu Lake- 1247 PM CDT Fri Aug 29 2025 .TONIGHT...South winds around 5 knots, becoming east after midnight. Lake waters smooth. A slight chance of showers this evening. A chance of thunderstorms. Showers likely 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...Northeast winds around 5 knots. Lake waters smooth. A chance of showers. .SUNDAY...Northeast winds around 5 knots. Lake waters smooth. A chance of showers and thunderstorms. .SUNDAY NIGHT...Northeast winds around 5 knots. Lake waters smooth. A chance of showers and thunderstorms. .MONDAY...East winds around 5 knots. Lake waters smooth. A chance of showers and thunderstorms. .MONDAY NIGHT...Northeast winds around 5 knots. 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. .TUESDAY...North winds around 5 knots. Lake waters smooth. A chance of showers and thunderstorms. .TUESDAY NIGHT...West 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. .WEDNESDAY...Northwest winds around 5 knots. Lake waters smooth. A slight chance of showers and thunderstorms early in the morning. A slight chance of showers and thunderstorms in the afternoon. .WEDNESDAY NIGHT...North winds around 5 knots. Lake waters smooth. Winds and waves higher in and near thunderstorms. $$ GMZ435-300600- Vermilion and West Cote Blanche Bays- 1247 PM CDT Fri Aug 29 2025 .TONIGHT...South winds around 5 knots, becoming southwest after midnight. Bay waters smooth. A chance of showers and thunderstorms early this evening, then a slight chance of showers and thunderstorms late this evening. A chance of showers and thunderstorms after midnight. .SATURDAY...Northwest winds around 5 knots. Bay waters smooth. A chance of thunderstorms in the morning. Showers likely. Thunderstorms likely in the afternoon. .SATURDAY NIGHT...North winds around 5 knots. Bay waters smooth. A chance of showers. A chance of thunderstorms in the evening. A slight chance of thunderstorms late. .SUNDAY...Northeast winds around 5 knots. Bay waters smooth. A chance of showers. A slight chance of thunderstorms early in the morning, then a chance of thunderstorms in the late morning and afternoon. .SUNDAY NIGHT...Northeast winds around 5 knots. Bay waters smooth. A chance of showers and thunderstorms. .MONDAY...East winds 5 to 10 knots. Bay waters light chop. A chance of showers and thunderstorms. .MONDAY NIGHT...East winds around 5 knots. Bay waters smooth. A chance of showers and thunderstorms. .TUESDAY...North winds around 5 knots. Bay waters smooth. A chance of showers and thunderstorms. .TUESDAY NIGHT...West winds around 5 knots. Bay waters smooth. A chance of thunderstorms in the evening. A chance of showers. A slight chance of thunderstorms after midnight. .WEDNESDAY...Northwest winds 5 to 10 knots. Bay waters light chop. A slight chance of showers and thunderstorms. .WEDNESDAY NIGHT...North winds around 5 knots. Bay waters smooth. A slight chance of showers and thunderstorms early in the evening. Winds and waves higher in and near thunderstorms. $$ GMZ436-300600- Atchafalaya and East Cote Blanche Bays- 1247 PM CDT Fri Aug 29 2025 .TONIGHT...South winds around 5 knots. Bay waters smooth. A chance of showers and thunderstorms early this evening, then a slight chance of showers and thunderstorms late this evening. A chance of showers and thunderstorms after midnight. .SATURDAY...Northwest winds around 5 knots. Bay waters smooth. A chance of thunderstorms in the morning. Showers likely. Thunderstorms likely in the afternoon. .SATURDAY NIGHT...North winds around 5 knots. Bay waters smooth. A chance of showers. .SUNDAY...Northeast winds around 5 knots. Bay waters smooth. A chance of showers and thunderstorms. .SUNDAY NIGHT...Northeast 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 late in the evening. A chance of showers and thunderstorms after midnight. .MONDAY...East winds 5 to 10 knots. Bay waters light chop. A chance of showers and thunderstorms. .MONDAY NIGHT...East winds around 5 knots. Bay waters smooth. A chance of showers and thunderstorms. .TUESDAY...North winds around 5 knots. Bay waters smooth. A chance of showers and thunderstorms. .TUESDAY NIGHT...Northwest winds around 5 knots. Bay 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...Northwest winds 5 to 10 knots. Bay waters light chop. A slight chance of thunderstorms. A chance of showers early in the morning, then a slight chance of showers in the late morning and afternoon. .WEDNESDAY NIGHT...North winds around 5 knots. Bay waters smooth. A slight chance of thunderstorms early in the evening. A slight chance of showers. Winds and waves higher in and near thunderstorms. $$ GMZ450-300600- Coastal waters from Cameron LA to High Island TX out 20 NM- 1247 PM CDT Fri Aug 29 2025 .TONIGHT...South winds 5 to 10 knots. Seas around 2 feet this evening, then 1 foot or less. Wave Detail: South 1 foot at 4 seconds. A slight chance of showers and thunderstorms this evening, then showers likely with a chance of thunderstorms after midnight. .SATURDAY...North winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: Southwest 1 foot at 4 seconds and southeast 1 foot at 4 seconds. A chance of thunderstorms. A chance of showers. .SATURDAY NIGHT...East winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: East 1 foot at 3 seconds and southwest 1 foot at 4 seconds. A chance of showers. A slight chance of thunderstorms in the evening, then a chance of thunderstorms after midnight. .SUNDAY...Northeast winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: East 1 foot at 3 seconds. A chance of showers and thunderstorms. .SUNDAY NIGHT...East winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: East 1 foot at 3 seconds. A chance of showers and thunderstorms. .MONDAY...Northeast winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: Northeast 1 foot at 3 seconds. Thunderstorms likely in the morning. Showers likely. A chance of thunderstorms in the afternoon. .MONDAY NIGHT...East winds 5 to 10 knots. Seas 1 foot or less. A chance of showers. .TUESDAY...North winds 5 to 10 knots. Seas 1 foot or less. A chance of showers and thunderstorms until late afternoon, then a slight chance of showers and thunderstorms late. .TUESDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or less. A chance of showers with a slight chance of thunderstorms. .WEDNESDAY...Northwest winds 5 to 10 knots. Seas around 2 feet. A chance of showers with a slight chance of thunderstorms early in the morning, then a slight chance of showers in the late morning and early afternoon. .WEDNESDAY NIGHT...North winds 5 to 10 knots. Seas 1 foot or less. A slight chance of showers. Winds and seas higher in and near thunderstorms. $$ GMZ452-300600- Coastal waters from Intracoastal City to Cameron LA out 20 NM- 1247 PM CDT Fri Aug 29 2025 .TONIGHT...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 this evening, then a chance of showers and thunderstorms after midnight. .SATURDAY...Northwest winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: Southwest 1 foot at 3 seconds and southeast 1 foot at 4 seconds. A chance of thunderstorms. Showers likely early in the morning, then a chance of showers in the late morning and afternoon. .SATURDAY NIGHT...Northeast winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: Southwest 1 foot at 3 seconds and northeast 1 foot at 3 seconds. A chance of showers. A slight chance of thunderstorms until early morning, then a chance of thunderstorms late. .SUNDAY...Northeast winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: East 1 foot at 3 seconds. A chance of showers and thunderstorms. .SUNDAY NIGHT...Northeast winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: Northeast 1 foot at 3 seconds. A chance of showers and thunderstorms. .MONDAY...East winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: Northeast 1 foot at 3 seconds. A chance of thunderstorms. Showers likely, mainly in the morning. .MONDAY NIGHT...East winds 5 to 10 knots. Seas 1 foot or less. A chance of showers and thunderstorms. .TUESDAY...North winds 5 to 10 knots. Seas 1 foot or less. A chance of showers and thunderstorms. .TUESDAY NIGHT...West winds 5 to 10 knots. Seas 1 foot or less. 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...Northwest winds 5 to 10 knots. Seas around 2 feet. A slight chance of thunderstorms. A chance of showers early in the morning, then a slight chance of showers in the late morning and afternoon. .WEDNESDAY NIGHT...North winds 5 to 10 knots. Seas 1 foot or less. A slight chance of showers. Winds and seas higher in and near thunderstorms. $$ GMZ455-300600- Coastal waters from Lower Atchafalaya River to Intracoastal City LA out 20 NM- 1247 PM CDT Fri Aug 29 2025 .TONIGHT...South winds around 5 knots. Seas 1 foot or less. Wave Detail: South 1 foot at 2 seconds. A chance of showers and thunderstorms early this evening. A slight chance of showers late this evening, then a chance of showers and thunderstorms after midnight. .SATURDAY...Northwest winds around 5 knots. Seas 1 foot or less. Wave Detail: Southwest 1 foot at 3 seconds. A chance of thunderstorms. Showers likely early in the morning, then a chance of showers in the late morning and afternoon. .SATURDAY NIGHT...North winds around 5 knots, becoming northeast after midnight. Seas 1 foot or less. Wave Detail: Northwest 1 foot at 3 seconds. A chance of showers in the evening. A chance of thunderstorms. Showers likely after midnight. .SUNDAY...Northeast winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: Northwest 1 foot at 2 seconds and northeast 1 foot at 2 seconds. A chance of thunderstorms. Showers likely, mainly in the morning. .SUNDAY NIGHT...Northeast winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: Northwest 1 foot at 2 seconds and northeast 1 foot at 2 seconds. A chance of showers and thunderstorms. .MONDAY...East winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: Northeast 1 foot at 2 seconds. A chance of thunderstorms. Showers likely, mainly in the morning. .MONDAY NIGHT...East winds 5 to 10 knots. Seas 1 foot or less. A chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. .TUESDAY...North winds 5 to 10 knots. Seas 1 foot or less. A chance of thunderstorms. Showers likely early in the morning, then a chance of showers in the late morning and afternoon. .TUESDAY NIGHT...Northwest winds 5 to 10 knots. Seas 1 foot or less. 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...Northwest winds 5 to 10 knots. Seas 1 foot or less. A chance of thunderstorms in the morning. A chance of showers. A slight chance of thunderstorms in the afternoon. .WEDNESDAY NIGHT...North winds 5 to 10 knots. Seas 1 foot or less. A slight chance of thunderstorms early in the evening. A slight chance of showers until early morning, then a chance of showers late. Winds and seas higher in and near thunderstorms. $$ GMZ470-300600- Coastal waters from Cameron LA to High Island TX from 20 to 60 NM- 1247 PM CDT Fri Aug 29 2025 .TONIGHT...South winds 5 to 10 knots. Seas around 2 feet. Wave Detail: South 1 foot at 5 seconds. A slight chance of showers and thunderstorms after midnight. A chance of showers and thunderstorms late. .SATURDAY...West winds 5 to 10 knots, becoming north in the afternoon. Seas around 2 feet in the morning, then 1 foot or less. Wave Detail: Southwest 1 foot at 4 seconds and southeast 1 foot at 5 seconds. A chance of thunderstorms. A chance of showers. .SATURDAY NIGHT...East winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: Southwest 1 foot at 4 seconds and northeast 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. .SUNDAY...Northeast winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: East 1 foot at 4 seconds. A chance of thunderstorms. Showers likely, mainly in the morning. .SUNDAY NIGHT...East winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: Northeast 1 foot at 4 seconds. A chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. .MONDAY...Northeast winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: Northeast 1 foot at 4 seconds. Showers and thunderstorms likely in the morning, then showers likely with a chance of thunderstorms in the afternoon. .MONDAY NIGHT...East winds 5 to 10 knots. Seas 1 foot or less, then around 2 feet after midnight. Showers likely with a chance of thunderstorms early in the evening, then a chance of showers with a slight chance of thunderstorms late in the evening. Showers likely with a chance of thunderstorms after midnight. .TUESDAY...North winds 5 to 10 knots. Seas around 2 feet in the morning, then 1 foot or less. Showers likely in the morning. A chance of thunderstorms. A chance of showers in the afternoon. .TUESDAY NIGHT...Northwest winds 5 to 10 knots. Seas 1 foot or less, then around 2 feet after midnight. A slight chance of thunderstorms early in the evening. A slight chance of showers in the evening, then a chance of showers with a slight chance of thunderstorms after midnight. .WEDNESDAY...Northwest winds 5 to 10 knots. Seas around 2 feet. A slight chance of thunderstorms early in the morning. A chance of showers in the morning, then a slight chance of showers early in the afternoon. .WEDNESDAY NIGHT...North winds 5 to 10 knots. Seas around 2 feet. A slight chance of showers after midnight. Winds and seas higher in and near thunderstorms. $$ GMZ472-300600- Coastal waters from Intracoastal City to Cameron LA from 20 to 60 NM- 1247 PM CDT Fri Aug 29 2025 .TONIGHT...South winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Southeast 2 feet at 5 seconds and south 1 foot at 2 seconds. A chance of showers and thunderstorms after midnight. .SATURDAY...Northwest winds around 5 knots. Seas 1 foot or less. Wave Detail: Southwest 1 foot at 3 seconds and southeast 1 foot at 5 seconds. A chance of thunderstorms. Showers likely, mainly in the morning. .SATURDAY NIGHT...Northeast winds around 5 knots. Seas 1 foot or less. Wave Detail: West 1 foot at 3 seconds and northeast 1 foot at 5 seconds. A chance of showers with a slight chance of thunderstorms in the evening, then showers likely with a chance of thunderstorms after midnight. .SUNDAY...Northeast winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: Northeast 1 foot at 5 seconds. A chance of thunderstorms. Showers likely until late afternoon, then a chance of showers late. .SUNDAY NIGHT...Northeast winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: Northeast 1 foot at 4 seconds. A chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. .MONDAY...Northeast winds around 10 knots. Seas 1 foot or less. Wave Detail: Northeast 1 foot at 4 seconds. Showers and thunderstorms likely in the morning, then showers likely with a chance of thunderstorms in the afternoon. .MONDAY NIGHT...Northeast winds around 10 knots. Seas 1 foot or less, then around 2 feet after midnight. A chance of thunderstorms. .TUESDAY...North winds 5 to 10 knots. Seas around 2 feet in the morning, then 1 foot or less. A chance of thunderstorms. Showers likely until late afternoon, then a chance of showers late. .TUESDAY NIGHT...North winds 5 to 10 knots, becoming west 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. A slight chance of thunderstorms after midnight. .WEDNESDAY...Northwest winds around 10 knots. Seas around 2 feet. A slight chance of thunderstorms. A chance of showers until late afternoon, then a slight chance of showers late. .WEDNESDAY NIGHT...North winds 5 to 10 knots. Seas around 2 feet. A slight chance of showers in the evening, then a chance of showers after midnight. Winds and seas higher in and near thunderstorms. $$ GMZ475-300600- Coastal waters from Lower Atchafalaya River to Intracoastal City LA from 20 to 60 NM- 1247 PM CDT Fri Aug 29 2025 .TONIGHT...South winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Southeast 2 feet at 5 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. .SATURDAY...Northwest winds around 5 knots. Seas 1 foot or less. Wave Detail: Northwest 1 foot at 3 seconds and south 1 foot at 4 seconds. Thunderstorms likely in the morning. Showers likely. A chance of thunderstorms in the afternoon. .SATURDAY NIGHT...North winds around 5 knots. Seas 1 foot or less. Wave Detail: Northwest 1 foot at 3 seconds and southeast 1 foot at 5 seconds. A chance of showers with a slight chance of thunderstorms in the evening, then showers likely with a chance of thunderstorms after midnight. .SUNDAY...North winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: Southwest 1 foot at 3 seconds and southeast 1 foot at 8 seconds. A chance of thunderstorms. Showers. .SUNDAY NIGHT...Northeast winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: West 1 foot at 2 seconds and northeast 1 foot at 4 seconds. A chance of thunderstorms. .MONDAY...Northeast winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: Northeast 1 foot at 4 seconds. Showers and thunderstorms likely until late afternoon, then showers likely with a chance of thunderstorms late. .MONDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet. Showers likely with a chance of thunderstorms early in the evening, then a chance of showers with a slight chance of thunderstorms late in the evening. Showers likely with a chance of thunderstorms after midnight. .TUESDAY...North winds 5 to 10 knots. Seas around 2 feet. A chance of thunderstorms. Showers likely until late afternoon, then a chance of showers late. .TUESDAY NIGHT...North winds 5 to 10 knots. Seas around 2 feet. A chance of thunderstorms early in the evening. A chance of showers in the evening, then showers likely with a slight chance of thunderstorms after midnight. .WEDNESDAY...Northwest winds 5 to 10 knots. Seas around 2 feet. Showers likely in the morning. A chance of thunderstorms. A chance of showers in the afternoon. .WEDNESDAY NIGHT...North winds 5 to 10 knots. Seas around 2 feet. A slight chance of thunderstorms early in the evening. A slight chance of showers in the evening, then a chance of showers after midnight. Winds and seas higher in and near thunderstorms. $$