Coastal Waters Forecast
Issued by NWS Lake Charles, LA
Issued by NWS Lake Charles, LA
305 FZUS54 KLCH 180539 CWFLCH Coastal Waters Forecast National Weather Service Lake Charles LA 1239 AM CDT Mon Aug 18 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. GMZ400-181800- 1239 AM CDT Mon Aug 18 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... Seas and winds will remain low over the period as high pressure meanders over the region. Periods of on and off showers and storms will also follow the regime of variable pressure. $$ GMZ430-181800- Sabine Lake- 1239 AM CDT Mon Aug 18 2025 .TODAY...North winds around 5 knots, becoming northeast early this afternoon, then becoming southwest late. Lake waters smooth. A slight chance of showers and thunderstorms late this morning and early afternoon. A chance of showers and thunderstorms late. .TONIGHT...Northeast winds around 5 knots. Lake waters smooth. A chance of showers and thunderstorms. .TUESDAY...North winds around 5 knots, becoming east around 5 knots in the afternoon. Lake waters smooth. A chance of showers and thunderstorms in the morning, then showers and thunderstorms likely in the afternoon. .TUESDAY NIGHT...South winds around 5 knots, becoming west after midnight. Lake waters smooth. A chance of showers and thunderstorms, mainly in the evening. .WEDNESDAY...North winds around 5 knots, becoming east in the afternoon. Lake waters smooth. A chance of showers and thunderstorms. .WEDNESDAY NIGHT...Southwest winds around 5 knots, becoming northwest after midnight. Lake waters smooth. A chance of showers. A chance of thunderstorms, mainly in the evening. .THURSDAY...North winds around 5 knots, becoming southwest in the afternoon. Lake waters smooth. A chance of showers and thunderstorms in the morning, then showers and thunderstorms likely in the afternoon. .THURSDAY NIGHT...Southwest winds around 5 knots. Lake waters smooth. A chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. .FRIDAY...North winds around 5 knots, becoming southeast in the afternoon. Lake waters smooth. Showers likely. A chance of thunderstorms in the morning, then thunderstorms likely in the afternoon. .FRIDAY NIGHT...Southeast winds around 5 knots in the evening, becoming light and variable. Lake waters smooth. A chance of showers. A slight chance of thunderstorms in the evening, then a chance of thunderstorms after midnight. Winds and waves higher in and near thunderstorms. $$ GMZ432-181800- Calcasieu Lake- 1239 AM CDT Mon Aug 18 2025 .TODAY...North winds around 5 knots, becoming south late. Lake waters smooth. A slight chance of showers and thunderstorms this morning, then a chance of showers and thunderstorms this afternoon. .TONIGHT...North winds around 5 knots. Lake waters smooth. A chance of showers. A chance of thunderstorms, mainly in the evening. .TUESDAY...East winds around 5 knots. Lake waters smooth. A chance of showers and thunderstorms in the morning, then showers and thunderstorms likely in the afternoon. .TUESDAY NIGHT...South winds around 5 knots, becoming west after midnight. Lake waters smooth. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. .WEDNESDAY...North winds around 5 knots, becoming east in the afternoon. Lake waters smooth. A chance of showers and thunderstorms. .WEDNESDAY NIGHT...Southwest winds around 5 knots, becoming northwest after midnight. Lake waters smooth. A chance of showers and thunderstorms. .THURSDAY...North winds around 5 knots, becoming southwest in the afternoon. Lake waters smooth. A chance of showers and thunderstorms in the morning, then showers and thunderstorms likely in the afternoon. .THURSDAY NIGHT...Southwest winds around 5 knots. Lake waters smooth. A chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. .FRIDAY...North winds around 5 knots, becoming southeast in the afternoon. Lake waters smooth. Showers likely. A chance of thunderstorms in the morning, then thunderstorms likely in the afternoon. .FRIDAY NIGHT...Southeast winds around 5 knots, becoming northeast after midnight. Lake waters smooth. A chance of showers. A slight chance of thunderstorms in the evening, then a chance of thunderstorms after midnight. Winds and waves higher in and near thunderstorms. $$ GMZ435-181800- Vermilion and West Cote Blanche Bays- 1239 AM CDT Mon Aug 18 2025 .TODAY...North winds around 5 knots. Bay waters smooth. A slight chance of showers and thunderstorms this morning, then a chance of showers and thunderstorms this afternoon. .TONIGHT...Northeast winds around 5 knots. Bay waters smooth. A chance of showers and thunderstorms in the evening. .TUESDAY...Northeast winds around 5 knots, becoming southeast in the afternoon. Bay waters smooth. A chance of showers and thunderstorms in the morning, then showers and thunderstorms likely in the afternoon. .TUESDAY NIGHT...Southeast winds around 5 knots, becoming northwest around 5 knots after midnight. Bay waters smooth. A slight chance of showers and thunderstorms. .WEDNESDAY...North winds around 5 knots, becoming southeast in the afternoon. Bay waters smooth. A chance of showers and thunderstorms. .WEDNESDAY NIGHT...Southwest winds around 5 knots, becoming northwest after midnight. Bay waters smooth. A chance of showers and thunderstorms, mainly in the evening. .THURSDAY...Northwest winds around 5 knots, becoming southwest in the afternoon. Bay waters smooth. A chance of showers and thunderstorms in the morning, then showers and thunderstorms likely in the afternoon. .THURSDAY NIGHT...Southwest winds around 5 knots. Bay waters smooth. A chance of showers and thunderstorms. .FRIDAY...West winds around 5 knots. Bay waters smooth. Showers likely. A chance of thunderstorms in the morning, then thunderstorms likely in the afternoon. .FRIDAY NIGHT...Southwest winds around 5 knots. Bay waters smooth. A chance of showers and thunderstorms. Winds and waves higher in and near thunderstorms. $$ GMZ436-181800- Atchafalaya and East Cote Blanche Bays- 1239 AM CDT Mon Aug 18 2025 .TODAY...North winds around 5 knots, becoming southwest late. Bay waters smooth. A slight chance of showers and thunderstorms this morning. A chance of showers and thunderstorms this afternoon. .TONIGHT...Northeast winds around 5 knots. Bay waters smooth. A chance of showers and thunderstorms, mainly in the evening. .TUESDAY...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. .TUESDAY NIGHT...East winds around 5 knots, becoming north after midnight. Bay waters smooth. A slight chance of showers and thunderstorms. .WEDNESDAY...North winds around 5 knots, becoming east in the afternoon. Bay waters smooth. A chance of showers and thunderstorms. .WEDNESDAY NIGHT...South winds around 5 knots, becoming west after midnight. Bay waters smooth. A slight chance of thunderstorms. A slight chance of showers in the evening, then a chance of showers after midnight. .THURSDAY...North winds around 5 knots, becoming southwest in the afternoon. Bay waters smooth. A chance of showers and thunderstorms. .THURSDAY NIGHT...South winds around 5 knots. Bay waters smooth. A chance of showers and thunderstorms. .FRIDAY...West winds around 5 knots. Bay waters smooth. Showers likely. A chance of thunderstorms in the morning, then thunderstorms likely in the afternoon. .FRIDAY NIGHT...Southwest winds around 5 knots. Bay waters smooth. A chance of showers and thunderstorms. Winds and waves higher in and near thunderstorms. $$ GMZ450-181800- Coastal waters from Cameron LA to High Island TX out 20 NM- 1239 AM CDT Mon Aug 18 2025 .TODAY...North winds 5 to 10 knots, becoming southwest late. Seas 1 foot or less. Wave Detail: Northwest 1 foot at 2 seconds and south 1 foot at 4 seconds. A chance of showers and thunderstorms, mainly this morning. .TONIGHT...North winds around 5 knots. Seas 1 foot or less. Wave Detail: Southwest 1 foot at 3 seconds. A chance of showers and thunderstorms. .TUESDAY...North winds 5 to 10 knots, becoming southeast in the afternoon. Seas 1 foot or less. Wave Detail: North 1 foot at 2 seconds. Showers and thunderstorms likely, mainly in the morning. .TUESDAY NIGHT...South winds around 5 knots, becoming west after midnight. Seas 1 foot or less. A chance of showers. A slight chance of thunderstorms in the evening, then a chance of thunderstorms after midnight. .WEDNESDAY...North winds 5 to 10 knots, becoming southeast in the afternoon. Seas 1 foot or less. Wave Detail: Northwest 1 foot at 2 seconds. A chance of showers and thunderstorms. .WEDNESDAY NIGHT...Southwest winds around 5 knots, becoming west after midnight. Seas 1 foot or less. Wave Detail: Southwest 1 foot at 2 seconds. A chance of showers and thunderstorms. .THURSDAY...North winds 5 to 10 knots, becoming southwest in the afternoon. Seas 1 foot or less. A chance of showers and thunderstorms. .THURSDAY NIGHT...Southwest winds around 5 knots. Seas 1 foot or less. A chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. .FRIDAY...Northwest winds 5 to 10 knots, becoming southeast in the afternoon. Seas 1 foot or less. A chance of thunderstorms. Showers likely, mainly in the morning. .FRIDAY NIGHT...South winds around 5 knots. Seas 1 foot or less. A chance of showers with a slight chance of thunderstorms in the evening, then showers likely with a chance of thunderstorms after midnight. Winds and seas higher in and near thunderstorms. $$ GMZ452-181800- Coastal waters from Intracoastal City to Cameron LA out 20 NM- 1239 AM CDT Mon Aug 18 2025 .TODAY...North winds 5 to 10 knots, becoming west late. Seas 1 foot or less. Wave Detail: Northwest 1 foot at 3 seconds and south 1 foot at 4 seconds. A chance of showers and thunderstorms. .TONIGHT...Northeast winds around 5 knots. Seas 1 foot or less. Wave Detail: Northwest 1 foot at 3 seconds. A chance of showers and thunderstorms. .TUESDAY...Northeast winds 5 to 10 knots, becoming southeast in the afternoon. Seas 1 foot or less. Showers and thunderstorms likely, mainly in the morning. .TUESDAY NIGHT...Southeast winds around 5 knots, becoming west after midnight. Seas 1 foot or less. Wave Detail: West 1 foot at 2 seconds. A chance of showers and thunderstorms. .WEDNESDAY...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. .WEDNESDAY NIGHT...Southwest winds around 5 knots, becoming west after midnight. Seas 1 foot or less. Wave Detail: Southwest 1 foot at 3 seconds. A chance of showers and thunderstorms. .THURSDAY...Northwest winds around 5 knots, becoming southwest in the afternoon. Seas 1 foot or less. A chance of thunderstorms. Showers likely, mainly in the morning. .THURSDAY NIGHT...Southwest winds around 5 knots. Seas 1 foot or less. A chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. .FRIDAY...West winds around 5 knots. Seas 1 foot or less. A chance of thunderstorms. Showers likely, mainly in the morning. .FRIDAY NIGHT...South winds around 5 knots. Seas 1 foot or less. A chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. Winds and seas higher in and near thunderstorms. $$ GMZ455-181800- Coastal waters from Lower Atchafalaya River to Intracoastal City LA out 20 NM- 1239 AM CDT Mon Aug 18 2025 .TODAY...North winds 5 to 10 knots, becoming west late. Seas 1 foot or less. A chance of showers and thunderstorms this morning, then a slight chance of showers and thunderstorms early this afternoon. A chance of showers and thunderstorms late. .TONIGHT...Northeast winds around 5 knots. Seas 1 foot or less. A chance of thunderstorms. A chance of showers. .TUESDAY...Northeast winds around 5 knots, becoming east around 5 knots in the afternoon. Seas 1 foot or less. Wave Detail: Northeast 1 foot at 2 seconds. A chance of showers and thunderstorms in the morning, then showers and thunderstorms likely in the afternoon. .TUESDAY NIGHT...East winds around 5 knots, becoming northeast after midnight. Seas 1 foot or less. A chance of showers and thunderstorms. .WEDNESDAY...North winds 5 to 10 knots, becoming east in the afternoon. Seas 1 foot or less. A chance of showers and thunderstorms. .WEDNESDAY NIGHT...South winds around 5 knots, becoming west after midnight. Seas 1 foot or less. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. .THURSDAY...North winds around 5 knots, becoming west around 5 knots in the afternoon. Seas 1 foot or less. A chance of showers and thunderstorms. .THURSDAY NIGHT...South winds around 5 knots. Seas 1 foot or less. A chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. .FRIDAY...West winds around 5 knots. Seas 1 foot or less. A chance of thunderstorms. Showers likely, mainly in the morning. .FRIDAY NIGHT...Southwest winds around 5 knots. Seas 1 foot or less. A chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. Winds and seas higher in and near thunderstorms. $$ GMZ470-181800- Coastal waters from Cameron LA to High Island TX from 20 to 60 NM- 1239 AM CDT Mon Aug 18 2025 .TODAY...North winds 5 to 10 knots, becoming west late. Seas 1 foot or less. Wave Detail: Northwest 1 foot at 3 seconds and southeast 1 foot at 5 seconds. A chance of showers and thunderstorms until late afternoon, then a slight chance of showers and thunderstorms late. .TONIGHT...Northwest winds around 5 knots, becoming northeast after midnight. 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 in the evening, then a chance of showers and thunderstorms after midnight. .TUESDAY...North winds 5 to 10 knots, becoming northeast in the afternoon. Seas 1 foot or less. Wave Detail: North 1 foot at 2 seconds and southeast 1 foot at 5 seconds. Showers and thunderstorms likely, mainly in the morning. .TUESDAY NIGHT...Southeast winds around 5 knots. Seas 1 foot or less. Wave Detail: East 1 foot at 3 seconds. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. .WEDNESDAY...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, mainly in the morning. .WEDNESDAY NIGHT...South winds around 5 knots, becoming west 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. .THURSDAY...North 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 in the evening, then showers likely with a chance of thunderstorms after midnight. .FRIDAY...West winds around 5 knots, becoming south in the afternoon. Seas 1 foot or less. A chance of thunderstorms. Showers likely, mainly in the morning. .FRIDAY NIGHT...South winds around 5 knots. Seas 1 foot or less. A slight chance of showers and thunderstorms in the evening, then showers likely with a chance of thunderstorms after midnight. Winds and seas higher in and near thunderstorms. $$ GMZ472-181800- Coastal waters from Intracoastal City to Cameron LA from 20 to 60 NM- 1239 AM CDT Mon Aug 18 2025 .TODAY...North winds 5 to 10 knots, becoming northwest late. Seas 1 foot or less. Wave Detail: North 1 foot at 3 seconds and southeast 1 foot at 5 seconds. A chance of showers and thunderstorms. .TONIGHT...North winds around 5 knots. Seas 1 foot or less. Wave Detail: North 1 foot at 3 seconds and southeast 1 foot at 5 seconds. A chance of showers and thunderstorms. .TUESDAY...Northeast winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: North 1 foot at 2 seconds. Showers and thunderstorms likely, mainly in the morning. .TUESDAY NIGHT...East winds around 5 knots. Seas 1 foot or less. Wave Detail: East 1 foot at 3 seconds. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. .WEDNESDAY...North winds 5 to 10 knots, becoming northeast in the afternoon. Seas 1 foot or less. Wave Detail: Northwest 1 foot at 2 seconds. A chance of thunderstorms. Showers likely, mainly in the morning. .WEDNESDAY NIGHT...South winds around 5 knots, becoming west after midnight. Seas 1 foot or less. Wave Detail: West 1 foot at 3 seconds. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. .THURSDAY...North 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 in the evening, then showers likely with a chance of thunderstorms after midnight. .FRIDAY...West winds around 5 knots. Seas 1 foot or less. A chance of thunderstorms. Showers, mainly in the morning. .FRIDAY NIGHT...South winds around 5 knots. Seas 1 foot or less. A slight chance of showers and thunderstorms in the evening, then showers likely with a chance of thunderstorms after midnight. Winds and seas higher in and near thunderstorms. $$ GMZ475-181800- Coastal waters from Lower Atchafalaya River to Intracoastal City LA from 20 to 60 NM- 1239 AM CDT Mon Aug 18 2025 .TODAY...North winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: Northeast 1 foot at 2 seconds and southeast 1 foot at 5 seconds. A chance of showers and thunderstorms. .TONIGHT...Northeast 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 and thunderstorms. .TUESDAY...Northeast 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. .TUESDAY NIGHT...Northeast winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: East 1 foot at 3 seconds. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. .WEDNESDAY...Northeast 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. .WEDNESDAY NIGHT...East winds around 5 knots. Seas 1 foot or less. Wave Detail: East 1 foot at 3 seconds. A slight chance of thunderstorms. A slight chance of showers in the evening, then a chance of showers after midnight. .THURSDAY...North winds around 5 knots, becoming east in the afternoon. 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 in the evening, then showers likely with a chance of thunderstorms after midnight. .FRIDAY...Southwest winds around 5 knots. Seas 1 foot or less. A chance of thunderstorms. Showers, mainly in the morning. .FRIDAY NIGHT...Southwest winds around 5 knots. Seas 1 foot or less. A slight chance of showers and thunderstorms in the evening, then showers likely with a chance of thunderstorms after midnight. Winds and seas higher in and near thunderstorms. $$