Coastal Waters Forecast
Issued by NWS Lake Charles, LA
Issued by NWS Lake Charles, LA
306 FZUS54 KLCH 280535 CWFLCH Coastal Waters Forecast National Weather Service Lake Charles LA 1235 AM CDT Thu Aug 28 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. GMZ400-281800- 1235 AM CDT Thu Aug 28 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... Light onshore winds will prevail into early Saturday. A slowly advancing front slides south Friday into Saturday which should bring about widespread shower and thunderstorm activity. Winds will turn offshore late Saturday or Sunday through the middle of next week as the frontal boundary moves off the coast. $$ GMZ430-281800- Sabine Lake- 1235 AM CDT Thu Aug 28 2025 .TODAY...South winds 5 to 10 knots. Lake waters light chop. A chance of showers and thunderstorms. .TONIGHT...South winds 5 to 10 knots. Lake waters light chop. A slight chance of showers and thunderstorms early in the evening. A slight chance of showers and thunderstorms late. .FRIDAY...Southwest winds 5 to 10 knots. Lake waters light chop. A chance of showers and thunderstorms in the morning, then showers and thunderstorms likely in the afternoon. .FRIDAY NIGHT...South winds around 5 knots. Lake waters smooth. A chance of thunderstorms. Showers likely early in the evening, then a chance of showers in the late evening and overnight. .SATURDAY...Northwest winds around 5 knots. Lake waters smooth. Showers with a chance of thunderstorms in the morning, then showers with thunderstorms likely in the afternoon. .SATURDAY NIGHT...Northeast winds around 5 knots. Lake waters smooth. Thunderstorms likely with a chance of showers in the evening, then showers likely with a chance of thunderstorms after midnight. .SUNDAY...North winds around 5 knots. Lake waters smooth. A chance of thunderstorms. A chance of showers. .SUNDAY NIGHT...Northeast winds around 5 knots. Lake waters smooth. A chance of showers. A chance of thunderstorms early in the evening, then a slight chance of thunderstorms in the late evening and overnight. .MONDAY...Northeast winds 5 to 10 knots. Lake waters light chop. A chance of showers. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. .MONDAY NIGHT...Northeast winds around 5 knots. Lake waters smooth. A chance of showers and thunderstorms early in the evening, then a slight chance of showers in the late evening and early morning. Winds and waves higher in and near thunderstorms. $$ GMZ432-281800- Calcasieu Lake- 1235 AM CDT Thu Aug 28 2025 .TODAY...South winds 5 to 10 knots. Lake waters light chop. A chance of thunderstorms. .TONIGHT...South winds 5 to 10 knots. Lake waters light chop. A slight chance of showers and thunderstorms late. .FRIDAY...Southwest 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. .FRIDAY NIGHT...South winds 5 to 10 knots. Lake waters light chop. A chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. .SATURDAY...Northeast winds around 5 knots, becoming west in the afternoon. Lake waters smooth. Showers with a chance of thunderstorms in the morning, then showers with thunderstorms likely in the afternoon. .SATURDAY NIGHT...Northeast winds around 5 knots. Lake waters smooth. A chance of showers. .SUNDAY...North winds 5 to 10 knots. Lake waters light chop. A chance of thunderstorms. A chance of showers. .SUNDAY NIGHT...Northeast winds 5 to 10 knots. Lake waters light chop. A chance of showers and thunderstorms early in the evening, then a slight chance of showers late in the evening. A chance of showers with a slight chance of thunderstorms after midnight. .MONDAY...Northeast winds 5 to 10 knots. Lake waters light chop. A chance of showers and thunderstorms. .MONDAY NIGHT...Northeast winds around 5 knots. Lake waters smooth. A chance of showers and thunderstorms early in the evening, then a slight chance of showers in the late evening and overnight. Winds and waves higher in and near thunderstorms. $$ GMZ435-281800- Vermilion and West Cote Blanche Bays- 1235 AM CDT Thu Aug 28 2025 .TODAY...South winds 5 to 10 knots. Bay waters light chop. A slight chance of showers and thunderstorms this morning, then a chance of showers and thunderstorms early this afternoon. A slight chance of showers and thunderstorms late. .TONIGHT...South winds 5 to 10 knots. Bay waters light chop. A slight chance of showers late. .FRIDAY...South winds 5 to 10 knots. Bay waters light chop. A chance of showers. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. .FRIDAY NIGHT...South winds 5 to 10 knots. Bay waters light chop. A chance of showers and thunderstorms early in the evening, then a slight chance of showers and thunderstorms late in the evening. A chance of showers and thunderstorms after midnight. .SATURDAY...West winds 5 to 10 knots. Bay waters light chop. Showers. A chance of thunderstorms in the morning, then thunderstorms in the afternoon. .SATURDAY NIGHT...North winds 5 to 10 knots. Bay waters light chop. A chance of showers. .SUNDAY...North winds 5 to 10 knots. Bay waters light chop. A chance of showers and thunderstorms. .SUNDAY NIGHT...Northeast winds 5 to 10 knots. Bay waters light chop. A chance of thunderstorms in the evening. A chance of showers. A slight chance of thunderstorms after midnight. .MONDAY...North winds 5 to 10 knots. Bay waters light chop. A chance of showers. A slight chance of thunderstorms early in the morning, then a chance of thunderstorms in the late morning and afternoon. .MONDAY NIGHT...Northeast winds 5 to 10 knots. Bay waters light chop. A chance of showers and thunderstorms early in the evening, then a slight chance of thunderstorms in the late evening and early morning. A slight chance of showers in the late evening and overnight. Winds and waves higher in and near thunderstorms. $$ GMZ436-281800- Atchafalaya and East Cote Blanche Bays- 1235 AM CDT Thu Aug 28 2025 .TODAY...Southeast winds around 5 knots, becoming south this afternoon. Bay waters light chop. A slight chance of showers and thunderstorms this morning. A chance of showers and thunderstorms early this afternoon, then a slight chance of showers and thunderstorms late. .TONIGHT...South winds 5 to 10 knots. Bay waters light chop. .FRIDAY...South winds 5 to 10 knots. Bay waters light chop. A chance of showers. A slight chance of thunderstorms late in the morning. A chance of thunderstorms in the afternoon. .FRIDAY NIGHT...South winds around 5 knots, increasing to 5 to 10 knots after midnight. Bay waters light chop. A chance of showers and thunderstorms. .SATURDAY...West winds 5 to 10 knots. Bay waters light chop. Showers with a chance of thunderstorms early in the morning, then showers and thunderstorms in the late morning and afternoon. .SATURDAY NIGHT...North winds around 5 knots, becoming east after midnight. Bay waters smooth. Thunderstorms likely in the evening. Showers. A chance of thunderstorms after midnight. .SUNDAY...North winds 5 to 10 knots. Bay waters light chop. Showers likely with a chance of thunderstorms. .SUNDAY NIGHT...Northeast winds 5 to 10 knots. 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. .MONDAY...North winds 5 to 10 knots. Bay waters light chop. A chance of showers and thunderstorms. .MONDAY NIGHT...Northeast winds 5 to 10 knots. 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. Winds and waves higher in and near thunderstorms. $$ GMZ450-281800- Coastal waters from Cameron LA to High Island TX out 20 NM- 1235 AM CDT Thu Aug 28 2025 .TODAY...South winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Southeast 2 feet at 4 seconds. Showers and thunderstorms likely, mainly this morning. .TONIGHT...South winds 10 to 15 knots. Seas around 2 feet. Wave Detail: South 2 feet at 4 seconds. A slight chance of showers after midnight. A slight chance of showers and thunderstorms late. .FRIDAY...Southwest winds 10 to 15 knots. Seas around 2 feet. Wave Detail: Southwest 2 feet at 4 seconds. A chance of showers and thunderstorms. .FRIDAY NIGHT...South winds around 10 knots. Seas around 2 feet. Wave Detail: South 2 feet at 4 seconds. 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. .SATURDAY...West winds 5 to 10 knots. Seas around 2 feet. Wave Detail: South 2 feet at 4 seconds. Showers likely with a chance of thunderstorms in the morning, then showers and thunderstorms likely in the afternoon. .SATURDAY NIGHT...East winds 5 to 10 knots. Seas 1 foot or less, then around 2 feet after midnight. Wave Detail: East 1 foot at 3 seconds and south 1 foot at 4 seconds. Showers likely with a chance of thunderstorms. .SUNDAY...North winds 5 to 10 knots. Seas around 2 feet. A chance of thunderstorms. Showers likely early in the morning, then a chance of showers in the late morning and afternoon. .SUNDAY NIGHT...Northeast winds 5 to 10 knots. Seas around 2 feet. A chance of showers and thunderstorms early in the evening, then a chance of showers with a slight chance of thunderstorms in the late evening and overnight. .MONDAY...Northeast winds 10 to 15 knots, diminishing to 5 to 10 knots in the afternoon. Seas around 2 feet. A chance of thunderstorms. A chance of showers. .MONDAY NIGHT...Northeast winds 5 to 10 knots. Seas 1 foot or less, then around 2 feet after midnight. A chance of thunderstorms early in the evening, then a slight chance of thunderstorms in the late evening and early morning. A chance of showers. Winds and seas higher in and near thunderstorms. $$ GMZ452-281800- Coastal waters from Intracoastal City to Cameron LA out 20 NM- 1235 AM CDT Thu Aug 28 2025 .TODAY...South winds 5 to 10 knots. Seas around 2 feet. Wave Detail: South 2 feet at 4 seconds. A chance of showers and thunderstorms. .TONIGHT...South winds 10 to 15 knots. Seas around 2 feet. Wave Detail: South 2 feet at 3 seconds. A slight chance of showers after midnight. A slight chance of showers and thunderstorms late. .FRIDAY...South winds 5 to 10 knots. Seas around 2 feet in the morning, then 1 foot or less. Wave Detail: South 2 feet at 4 seconds. A chance of showers. A slight chance of thunderstorms early in the morning, then a chance of thunderstorms in the late morning and afternoon. .FRIDAY NIGHT...South winds 5 to 10 knots. Seas 1 foot or less, then around 2 feet after midnight. Wave Detail: South 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. .SATURDAY...West winds 5 to 10 knots. Seas around 2 feet in the morning, then 1 foot or less. Wave Detail: South 1 foot at 4 seconds. Showers with a chance of thunderstorms in the morning, then showers with thunderstorms likely in the afternoon. .SATURDAY NIGHT...North winds 5 to 10 knots, becoming east after midnight. Seas 1 foot or less. Wave Detail: West 1 foot at 4 seconds and southeast 1 foot at 4 seconds. Showers likely with a chance of thunderstorms. .SUNDAY...North winds around 10 knots. Seas 1 foot or less. A chance of thunderstorms. Showers likely until late afternoon, then a chance of showers late. .SUNDAY NIGHT...Northeast winds around 10 knots. Seas around 2 feet in the evening, then 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. .MONDAY...North winds 10 to 15 knots. Seas 1 foot or less, then around 2 feet in the afternoon. A chance of thunderstorms. A chance of showers. .MONDAY NIGHT...Northeast 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. $$ GMZ455-281800- Coastal waters from Lower Atchafalaya River to Intracoastal City LA out 20 NM- 1235 AM CDT Thu Aug 28 2025 .TODAY...Southeast winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: Southeast 1 foot at 2 seconds. A chance of showers and thunderstorms early this morning, then a slight chance of showers and thunderstorms late this morning and afternoon. .TONIGHT...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 late. .FRIDAY...South winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: South 1 foot at 3 seconds. A chance of showers. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. .FRIDAY NIGHT...South winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: South 1 foot at 3 seconds. A chance of showers in the evening. A chance of thunderstorms. Showers likely after midnight. .SATURDAY...West winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: Southwest 1 foot at 3 seconds. Showers with a chance of thunderstorms early in the morning, then showers with thunderstorms likely in the late morning and afternoon. .SATURDAY NIGHT...Northwest winds 5 to 10 knots, becoming east after midnight. Seas 1 foot or less. Wave Detail: East 1 foot at 2 seconds and west 1 foot at 3 seconds. Showers likely with a chance of thunderstorms. .SUNDAY...North winds 5 to 10 knots. Seas 1 foot or less. 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. A chance of showers. A chance of thunderstorms early in the evening, then a slight chance of thunderstorms in the late evening and overnight. .MONDAY...North winds 5 to 10 knots. Seas 1 foot or less, then around 2 feet in the afternoon. A chance of showers and thunderstorms. .MONDAY NIGHT...Northeast 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. Winds and seas higher in and near thunderstorms. $$ GMZ470-281800- Coastal waters from Cameron LA to High Island TX from 20 to 60 NM- 1235 AM CDT Thu Aug 28 2025 .TODAY...South winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Southeast 2 feet at 5 seconds. Showers likely this morning. A chance of thunderstorms. A chance of showers this afternoon. .TONIGHT...South winds around 10 knots. Seas around 2 feet. Wave Detail: Southeast 2 feet at 4 seconds. A slight chance of showers after midnight. A slight chance of showers and thunderstorms late. .FRIDAY...South winds 5 to 10 knots. Seas around 2 feet. Wave Detail: South 2 feet at 5 seconds. A chance of showers and thunderstorms. .FRIDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet. Wave Detail: South 2 feet at 5 seconds. A slight chance of thunderstorms in the evening. A chance of showers. A chance of thunderstorms after midnight. .SATURDAY...West winds 5 to 10 knots. Seas around 2 feet. Wave Detail: South 1 foot at 5 seconds. A chance of thunderstorms. Showers. .SATURDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet. Wave Detail: South 1 foot at 5 seconds. A chance of thunderstorms. .SUNDAY...Northwest winds around 10 knots, becoming north in the afternoon. Seas around 2 feet. A chance of thunderstorms. Showers likely until late afternoon, then a chance of showers late. .SUNDAY NIGHT...Northeast winds around 10 knots. Seas around 2 feet. A chance of showers and thunderstorms early in the evening, then a chance of showers with a slight chance of thunderstorms in the late evening and overnight. .MONDAY...North winds around 10 knots. Seas around 2 feet. A chance of showers and thunderstorms until late afternoon, then a chance of showers with a slight chance of thunderstorms late. .MONDAY NIGHT...Northeast winds around 10 knots. Seas around 2 feet. A chance of showers with a slight chance of thunderstorms. Winds and seas higher in and near thunderstorms. $$ GMZ472-281800- Coastal waters from Intracoastal City to Cameron LA from 20 to 60 NM- 1235 AM CDT Thu Aug 28 2025 .TODAY...South winds around 10 knots. Seas around 2 feet. Wave Detail: Southeast 2 feet at 4 seconds. A chance of showers and thunderstorms. .TONIGHT...South winds around 10 knots. Seas around 2 feet. Wave Detail: Southeast 2 feet 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. .FRIDAY...South winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Southeast 2 feet at 5 seconds. A chance of showers and thunderstorms. .FRIDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Southeast 2 feet at 5 seconds. A slight chance of thunderstorms in the evening. A chance of showers. A chance of thunderstorms after midnight. .SATURDAY...West winds 5 to 10 knots. Seas around 2 feet. Wave Detail: South 2 feet at 4 seconds. Showers with thunderstorms likely until late afternoon, then showers likely with a chance of thunderstorms late. .SATURDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Southwest 1 foot at 3 seconds and southeast 1 foot at 5 seconds. A chance of thunderstorms. .SUNDAY...Northwest winds around 10 knots. Seas around 2 feet. A chance of thunderstorms. Showers likely until late afternoon, then a chance of showers late. .SUNDAY NIGHT...Northeast winds around 10 knots. Seas around 2 feet. A chance of showers and thunderstorms early in the evening, then a chance of showers with a slight chance of thunderstorms in the late evening and overnight. .MONDAY...North winds around 10 knots. Seas around 2 feet. A chance of showers and thunderstorms until late afternoon, then a chance of showers with a slight chance of thunderstorms late. .MONDAY NIGHT...Northeast winds around 10 knots. Seas around 2 feet. A chance of showers with a slight chance of thunderstorms. Winds and seas higher in and near thunderstorms. $$ GMZ475-281800- Coastal waters from Lower Atchafalaya River to Intracoastal City LA from 20 to 60 NM- 1235 AM CDT Thu Aug 28 2025 .TODAY...Southeast winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Southeast 2 feet at 4 seconds. A slight chance of thunderstorms. A chance of showers early this morning, then a slight chance of showers late this morning and afternoon. .TONIGHT...South winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Southeast 2 feet at 5 seconds. A slight chance of showers late. .FRIDAY...South winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Southeast 2 feet at 5 seconds. A chance of showers. A slight chance of thunderstorms early in the morning, then a chance of thunderstorms in the late morning and afternoon. .FRIDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Southeast 2 feet 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. .SATURDAY...West winds 5 to 10 knots. Seas around 2 feet. Wave Detail: South 2 feet at 4 seconds. Showers with thunderstorms likely until late afternoon, then showers likely with a chance of thunderstorms late. .SATURDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: Southwest 1 foot at 3 seconds and southeast 1 foot at 6 seconds. A chance of thunderstorms. .SUNDAY...Northwest winds 5 to 10 knots. Seas 1 foot or less. A chance of thunderstorms. Showers. .SUNDAY NIGHT...Northeast winds 5 to 10 knots, becoming east after midnight. Seas 1 foot or less. A chance of showers and thunderstorms in the evening, then showers likely with a slight chance of thunderstorms after midnight. .MONDAY...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. .MONDAY NIGHT...Northeast winds around 10 knots. Seas around 2 feet. A slight chance of thunderstorms. A chance of showers until early morning, then showers likely late. Winds and seas higher in and near thunderstorms. $$