Coastal Waters Forecast
Issued by NWS Lake Charles, LA
Issued by NWS Lake Charles, LA
878 FZUS54 KLCH 290546 CWFLCH Coastal Waters Forecast National Weather Service Lake Charles LA 1245 AM 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. GMZ400-291800- 1245 AM 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... Light onshore winds and low seas will prevail into early Saturday. Scattered showers and storms are expected to develop today ahead of a slowly 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. $$ GMZ430-291800- Sabine Lake- 1245 AM CDT Fri Aug 29 2025 .TODAY...Southwest winds around 5 knots. Lake waters smooth. A chance of showers and thunderstorms this morning, then showers and thunderstorms likely this afternoon. .TONIGHT...South winds around 5 knots, becoming northwest after midnight. Lake waters smooth. A chance of showers and thunderstorms. .SATURDAY...Northeast winds around 5 knots. Lake waters smooth. Showers likely. A chance of thunderstorms in the morning, then thunderstorms likely in the afternoon. .SATURDAY NIGHT...East winds around 5 knots. Lake waters smooth. Showers and thunderstorms likely, mainly in the evening. .SUNDAY...Northeast winds around 5 knots. Lake waters smooth. A chance of thunderstorms. A chance of showers. .SUNDAY NIGHT...Northeast winds around 5 knots. Lake waters smooth. A chance of showers and thunderstorms. .MONDAY...Northeast winds around 5 knots. Lake waters smooth. A chance of showers. .MONDAY NIGHT...Northeast winds around 5 knots. Lake waters smooth. A chance of showers and thunderstorms early in the evening, then a slight chance of showers and thunderstorms in the late evening and overnight. .TUESDAY...North winds around 5 knots. Lake waters smooth. A slight chance of showers and thunderstorms. .TUESDAY NIGHT...South winds around 5 knots, becoming west after midnight. Lake waters smooth. A slight chance of showers and thunderstorms early in the evening. Winds and waves higher in and near thunderstorms. $$ GMZ432-291800- Calcasieu Lake- 1245 AM CDT Fri Aug 29 2025 .TODAY...Southwest winds around 5 knots. Lake waters smooth. A chance of showers and thunderstorms this morning, then showers and thunderstorms likely early this afternoon. A chance of showers and thunderstorms late. .TONIGHT...South winds around 5 knots, becoming northeast after midnight. Lake waters smooth. A chance of showers and thunderstorms until early morning, then showers and thunderstorms likely late. .SATURDAY...Northeast winds around 5 knots. Lake waters smooth. Showers likely. A chance of thunderstorms in the morning, then thunderstorms likely in the afternoon. .SATURDAY NIGHT...Northeast winds around 5 knots. Lake waters smooth. Showers and thunderstorms likely in the evening, then a chance of showers with a slight chance of thunderstorms after midnight. .SUNDAY...Northeast 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. .MONDAY...Northeast winds 5 to 10 knots. Lake waters light chop. A chance of thunderstorms. A chance of showers. .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 and thunderstorms in the late evening and overnight. .TUESDAY...North winds around 5 knots. Lake waters smooth. A slight chance of showers and thunderstorms. .TUESDAY NIGHT...West winds around 5 knots. Lake waters smooth. A slight chance of showers and thunderstorms early in the evening. Winds and waves higher in and near thunderstorms. $$ GMZ435-291800- Vermilion and West Cote Blanche Bays- 1245 AM CDT Fri Aug 29 2025 .TODAY...Southwest winds 5 to 10 knots. Bay waters light chop. A slight chance of showers and thunderstorms early this morning, then a chance of showers and thunderstorms late this morning and afternoon. .TONIGHT...Southwest winds around 5 knots. Bay waters smooth. A chance of showers and thunderstorms. .SATURDAY...North winds around 5 knots. Bay waters smooth. Showers with a chance of thunderstorms in the morning, then showers with thunderstorms likely in the afternoon. .SATURDAY NIGHT...Northeast winds around 5 knots. Bay waters smooth. Showers and thunderstorms likely, mainly in the evening. .SUNDAY...Northeast winds 5 to 10 knots. Bay waters light chop. A chance of showers and thunderstorms. .SUNDAY NIGHT...Northeast winds 5 to 10 knots. Bay waters light chop. A chance of showers and thunderstorms. .MONDAY...Northeast winds 5 to 10 knots. Bay waters light chop. A chance of showers and thunderstorms. .MONDAY NIGHT...Northeast winds 5 to 10 knots. Bay waters light chop. A chance of showers and thunderstorms early in the evening, then a slight chance of showers in the late evening and overnight. .TUESDAY...North winds 5 to 10 knots. Bay waters light chop. A slight chance of showers and thunderstorms. .TUESDAY NIGHT...Northwest winds around 5 knots. Bay waters smooth. A slight chance of showers. A slight chance of thunderstorms early in the evening. A slight chance of thunderstorms late. Winds and waves higher in and near thunderstorms. $$ GMZ436-291800- Atchafalaya and East Cote Blanche Bays- 1245 AM CDT Fri Aug 29 2025 .TODAY...Southwest 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 this afternoon. .TONIGHT...South winds around 5 knots. Bay waters smooth. A chance of thunderstorms. A chance of showers. .SATURDAY...Northwest winds around 5 knots. Bay 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. Bay waters smooth. Showers and thunderstorms likely, mainly in the evening. .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. A chance of thunderstorms in the evening. A chance of thunderstorms late. .MONDAY...Northeast winds 5 to 10 knots. Bay waters light chop. A chance of thunderstorms. A chance of showers. .MONDAY NIGHT...Northeast winds around 5 knots. Bay waters smooth. A chance of thunderstorms early in the evening. A chance of showers. .TUESDAY...North 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. .TUESDAY NIGHT...North winds around 5 knots. Bay waters smooth. A chance of showers and thunderstorms early in the evening, then a slight chance of showers in the late evening and overnight. A slight chance of thunderstorms after midnight. Winds and waves higher in and near thunderstorms. $$ GMZ450-291800- Coastal waters from Cameron LA to High Island TX out 20 NM- 1245 AM CDT Fri Aug 29 2025 .TODAY...Southwest winds 5 to 10 knots. Seas around 2 feet. Wave Detail: South 2 feet at 4 seconds. A chance of showers and thunderstorms. .TONIGHT...Southwest winds 5 to 10 knots. Seas around 2 feet. 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. .SATURDAY...Northeast winds 5 to 10 knots. Seas around 2 feet in the morning, then 1 foot or less. Wave Detail: Southeast 1 foot at 4 seconds and southwest 1 foot at 4 seconds. Showers likely. A chance of thunderstorms in the morning, then 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. Showers likely with a chance of thunderstorms. .SUNDAY...Northeast winds 5 to 10 knots. Seas 1 foot or less, then around 2 feet in the afternoon. Wave Detail: Northeast 1 foot at 3 seconds. A chance of thunderstorms. Showers likely until late afternoon, then a chance of showers late. .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 around 2 feet. A chance of thunderstorms. A chance of showers. .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. .TUESDAY...North winds 5 to 10 knots. Seas 1 foot or less. A chance of showers with a slight chance of thunderstorms early in the morning, then a slight chance of showers and thunderstorms in the late morning and early afternoon. .TUESDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or less. A slight chance of showers. A slight chance of thunderstorms after midnight. Winds and seas higher in and near thunderstorms. $$ GMZ452-291800- Coastal waters from Intracoastal City to Cameron LA out 20 NM- 1245 AM CDT Fri Aug 29 2025 .TODAY...Southwest winds 5 to 10 knots. Seas around 2 feet this morning, then 1 foot or less. Wave Detail: South 2 feet at 4 seconds. A chance of showers and thunderstorms. .TONIGHT...Southwest 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. .SATURDAY...North 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. Showers with a chance of thunderstorms in the morning, then showers and thunderstorms likely in the afternoon. .SATURDAY NIGHT...Northeast winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: Northeast 1 foot at 3 seconds and southwest 1 foot at 3 seconds. Showers likely with a chance of thunderstorms. .SUNDAY...Northeast winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: East 1 foot at 3 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 3 seconds. A chance of showers and thunderstorms. .MONDAY...Northeast winds around 10 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 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. .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...Northwest winds 5 to 10 knots. Seas 1 foot or less. A slight chance of showers in the evening. A slight chance of thunderstorms. A chance of showers after midnight. Winds and seas higher in and near thunderstorms. $$ GMZ455-291800- Coastal waters from Lower Atchafalaya River to Intracoastal City LA out 20 NM- 1245 AM CDT Fri Aug 29 2025 .TODAY...Southwest 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 this morning, then a chance of showers and thunderstorms this afternoon. .TONIGHT...South winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: South 1 foot at 2 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...Northwest winds around 5 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...Northeast winds around 5 knots, becoming east after midnight. Seas 1 foot or less. Wave Detail: Northwest 1 foot at 3 seconds. A chance of thunderstorms. .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 until late afternoon, then a chance of showers late. .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. .MONDAY...Northeast winds 5 to 10 knots. Seas 1 foot or less. 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. A slight chance of thunderstorms after midnight. .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...North winds 5 to 10 knots. Seas 1 foot or less. A chance of showers. A slight chance of thunderstorms early in the evening. A slight chance of thunderstorms after midnight. Winds and seas higher in and near thunderstorms. $$ GMZ470-291800- Coastal waters from Cameron LA to High Island TX from 20 to 60 NM- 1245 AM CDT Fri Aug 29 2025 .TODAY...Southwest winds 5 to 10 knots. Seas around 2 feet. Wave Detail: South 2 feet at 4 seconds. A slight chance of showers and thunderstorms early this morning, then a chance of showers and thunderstorms late this morning and early afternoon. A slight chance of showers and thunderstorms late. .TONIGHT...South winds 5 to 10 knots. Seas around 2 feet. Wave Detail: South 1 foot at 5 seconds. A slight chance of showers until early morning. A slight chance of thunderstorms after midnight, then a chance of showers and thunderstorms late. .SATURDAY...Northwest winds 5 to 10 knots, becoming northeast in the afternoon. Seas around 2 feet. Wave Detail: Southwest 1 foot at 4 seconds and southeast 1 foot at 5 seconds. A chance of thunderstorms. Showers likely until late afternoon, then a chance of showers late. .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 4 seconds. A chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. .SUNDAY...Northeast winds 5 to 10 knots. Seas around 2 feet. Wave Detail: East 1 foot at 4 seconds. A chance of thunderstorms. Showers likely until late afternoon, then a chance of showers late. .SUNDAY NIGHT...East winds around 10 knots. Seas around 2 feet. Wave Detail: Northeast 1 foot at 4 seconds. A chance of showers and thunderstorms. .MONDAY...Northeast winds 5 to 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. .TUESDAY...North winds 5 to 10 knots. Seas around 2 feet. A chance of showers and thunderstorms until late afternoon, then a slight chance of showers and thunderstorms late. .TUESDAY NIGHT...East winds 5 to 10 knots, becoming west after midnight. Seas 1 foot or less. 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. Winds and seas higher in and near thunderstorms. $$ GMZ472-291800- Coastal waters from Intracoastal City to Cameron LA from 20 to 60 NM- 1245 AM CDT Fri Aug 29 2025 .TODAY...Southwest winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Southeast 2 feet at 5 seconds. A slight chance of thunderstorms this morning. A chance of showers. A chance of thunderstorms this afternoon. .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 slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. .SATURDAY...Northwest winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Southeast 2 feet at 5 seconds and southwest 1 foot at 3 seconds. Showers with thunderstorms likely. .SATURDAY NIGHT...Northeast winds 5 to 10 knots, becoming southeast after midnight. Seas 1 foot or less, then around 2 feet after midnight. Wave Detail: East 1 foot at 4 seconds. Showers likely with a chance of thunderstorms. .SUNDAY...Northeast winds 5 to 10 knots. Seas 1 foot or less, then around 2 feet in the afternoon. Wave Detail: Northeast 2 feet at 5 seconds. A chance of thunderstorms. Showers likely. .SUNDAY NIGHT...East winds around 10 knots. Seas around 2 feet. Wave Detail: Northeast 1 foot at 4 seconds. Showers likely in the evening. A chance of thunderstorms. A chance of showers after midnight. .MONDAY...Northeast winds around 10 knots. Seas around 2 feet. Showers likely in the morning. A chance of thunderstorms. A chance of showers in the afternoon. .MONDAY NIGHT...Northeast winds around 10 knots. Seas around 2 feet. A chance of showers. A slight chance of thunderstorms early in the evening. A slight chance of thunderstorms after midnight. .TUESDAY...North winds 5 to 10 knots. Seas around 2 feet. A chance of showers. A chance of thunderstorms until late afternoon, then a slight chance of thunderstorms late. .TUESDAY 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 in the evening, then a chance of showers with a slight chance of thunderstorms after midnight. Winds and seas higher in and near thunderstorms. $$ GMZ475-291800- Coastal waters from Lower Atchafalaya River to Intracoastal City LA from 20 to 60 NM- 1245 AM CDT Fri Aug 29 2025 .TODAY...South winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Southeast 2 feet at 5 seconds. A slight chance of showers until late afternoon. A slight chance of thunderstorms late this morning and early afternoon, then a chance of showers and thunderstorms late. .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 in the evening. A slight chance of showers and thunderstorms after midnight, then a chance of showers and thunderstorms late. .SATURDAY...Northwest 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. Showers with thunderstorms likely. .SATURDAY NIGHT...Northeast winds around 5 knots, becoming southeast after midnight. Seas 1 foot or less. Wave Detail: Northwest 1 foot at 3 seconds and southeast 1 foot at 5 seconds. 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. .SUNDAY...South winds 5 to 10 knots, becoming north in the afternoon. 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 likely. .SUNDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet. Wave Detail: West 1 foot at 2 seconds and northeast 1 foot at 4 seconds. A chance of showers in the evening. A chance of thunderstorms. Showers likely after midnight. .MONDAY...Northeast winds 5 to 10 knots. Seas around 2 feet. Showers likely with a chance of thunderstorms until late afternoon, then a chance of showers with a slight chance of thunderstorms late. .MONDAY NIGHT...Northeast winds 5 to 10 knots. Seas around 2 feet. A chance of showers in the evening. A slight chance of thunderstorms. Showers likely after midnight. .TUESDAY...North 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. .TUESDAY NIGHT...North winds 5 to 10 knots. Seas around 2 feet. A chance of showers. A slight chance of thunderstorms early in the evening. A slight chance of thunderstorms after midnight. Winds and seas higher in and near thunderstorms. $$