Coastal Waters Forecast
Issued by NWS Lake Charles, LA
Issued by NWS Lake Charles, LA
372 FZUS54 KLCH 171729 CWFLCH Coastal Waters Forecast National Weather Service Lake Charles LA 1229 PM CDT Sun Aug 17 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. GMZ400-180600- 1229 PM CDT Sun Aug 17 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... Background winds will stay between 5 and 15 knots from the south- southeast through the middle of the week. On Wednesday, winds will shift and come from the north. Waves will stay between 1 and 3 feet through mid-week. High pressure will limit showers and thunderstorms, but a few storms are expected each day. $$ GMZ430-180600- Sabine Lake- 1229 PM CDT Sun Aug 17 2025 .TONIGHT...Southwest winds around 5 knots this evening, becoming light and variable, then becoming northwest around 5 knots late. Lake waters smooth. A chance of showers and thunderstorms early this evening. .MONDAY...North winds around 5 knots. Lake waters smooth. A slight chance of showers and thunderstorms in the morning, then showers and thunderstorms likely in the afternoon. .MONDAY NIGHT...Northeast winds around 5 knots in the evening, becoming light and variable. 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. .TUESDAY NIGHT...South winds around 5 knots, becoming west after midnight. Lake waters smooth. A slight chance of showers and thunderstorms. .WEDNESDAY...Northwest winds around 5 knots, becoming west in the afternoon. Lake waters smooth. A chance of showers and thunderstorms. .WEDNESDAY NIGHT...Southwest winds around 5 knots, becoming west after midnight. Lake waters smooth. A chance of showers. A chance of thunderstorms, mainly in the evening. .THURSDAY...Northwest winds around 5 knots, becoming west 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. .THURSDAY NIGHT...Northwest winds around 5 knots, becoming northeast around 5 knots after midnight. Lake waters smooth. Showers likely with a chance of thunderstorms. .FRIDAY...North winds around 5 knots, becoming south around 5 knots in the afternoon. Lake waters smooth. Showers likely. A chance of thunderstorms in the morning, then thunderstorms likely in the afternoon. .FRIDAY NIGHT...South winds around 5 knots, becoming southwest after midnight. Lake waters smooth. A chance of showers. A chance of thunderstorms, mainly in the evening. Winds and waves higher in and near thunderstorms. $$ GMZ432-180600- Calcasieu Lake- 1229 PM CDT Sun Aug 17 2025 .TONIGHT...Southwest winds around 5 knots, becoming northwest after midnight. Lake waters smooth. A chance of showers and thunderstorms early this evening. A slight chance of showers and thunderstorms after midnight. .MONDAY...North 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...North winds around 5 knots. Lake waters smooth. A chance of showers and thunderstorms. .TUESDAY...North winds around 5 knots, becoming east in the afternoon. Lake waters smooth. A chance of showers and thunderstorms. .TUESDAY NIGHT...South winds around 5 knots, becoming west around 5 knots after midnight. Lake waters smooth. A slight chance of showers and thunderstorms. .WEDNESDAY...Northwest winds around 5 knots, becoming west in the afternoon. Lake waters smooth. A chance of showers and thunderstorms. .WEDNESDAY NIGHT...West winds around 5 knots. Lake waters smooth. A chance of showers and thunderstorms. .THURSDAY...Northwest 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...West winds around 5 knots, becoming northeast after midnight. Lake waters smooth. A chance of showers and thunderstorms in the evening, then showers likely with a slight chance of thunderstorms after midnight. .FRIDAY...North winds around 5 knots, becoming south in the afternoon. Lake waters smooth. Showers likely. A chance of thunderstorms in the morning, then thunderstorms likely in the afternoon. .FRIDAY NIGHT...South winds around 5 knots. Lake waters smooth. A chance of showers with a slight chance of thunderstorms. Winds and waves higher in and near thunderstorms. $$ GMZ435-180600- Vermilion and West Cote Blanche Bays- 1229 PM CDT Sun Aug 17 2025 .TONIGHT...West winds around 5 knots, becoming northwest after midnight. Bay waters smooth. A chance of showers and thunderstorms early this evening. A slight chance of showers and thunderstorms late. .MONDAY...North winds around 5 knots, becoming west in the afternoon. Bay waters smooth. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. .MONDAY NIGHT...Southeast winds around 5 knots, becoming north after midnight. Bay waters smooth. A chance of showers and thunderstorms in the evening. .TUESDAY...North winds around 5 knots, becoming southeast in the afternoon. Bay waters smooth. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. .TUESDAY NIGHT...Southwest 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 south in the afternoon. Bay waters smooth. A chance of showers and thunderstorms. .WEDNESDAY NIGHT...Southwest winds around 5 knots. Bay waters smooth. A slight chance of thunderstorms. A slight chance of showers in the evening, then a chance of showers after midnight. .THURSDAY...Northwest winds around 5 knots, becoming southwest in the afternoon. Bay waters smooth. A chance of showers and thunderstorms. .THURSDAY NIGHT...Southwest winds around 5 knots. Bay waters smooth. A chance of showers. A chance of thunderstorms, mainly in the evening. .FRIDAY...Northwest winds around 5 knots, becoming southwest in the afternoon. 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 with a slight chance of thunderstorms. Winds and waves higher in and near thunderstorms. $$ GMZ436-180600- Atchafalaya and East Cote Blanche Bays- 1229 PM CDT Sun Aug 17 2025 .TONIGHT...Southwest winds around 5 knots, becoming north late this evening and overnight. Bay waters smooth. A chance of showers and thunderstorms early this evening. A slight chance of showers and thunderstorms late. .MONDAY...North winds around 5 knots, becoming southwest around 5 knots in the afternoon. Bay waters smooth. A chance of showers and thunderstorms. .MONDAY NIGHT...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 east in the afternoon. Bay waters smooth. A chance of showers and thunderstorms. .TUESDAY NIGHT...South winds around 5 knots, becoming northwest after midnight. Bay waters smooth. A slight chance of showers and thunderstorms. .WEDNESDAY...North winds around 5 knots, becoming southwest in the afternoon. Bay waters smooth. A chance of showers and thunderstorms. .WEDNESDAY NIGHT...Southwest winds around 5 knots. Bay waters smooth. A slight chance of thunderstorms. A slight chance of showers in the evening, then a chance of showers after midnight. .THURSDAY...Northwest winds around 5 knots, becoming southwest in the afternoon. Bay waters smooth. A chance of showers and thunderstorms. .THURSDAY NIGHT...Southwest winds around 5 knots. Bay waters smooth. A chance of showers with a slight chance of thunderstorms. .FRIDAY...Southwest winds around 5 knots. Bay waters smooth. Showers likely with a chance of thunderstorms. .FRIDAY NIGHT...Southwest winds around 5 knots. Bay waters smooth. A chance of showers with a slight chance of thunderstorms. Winds and waves higher in and near thunderstorms. $$ GMZ450-180600- Coastal waters from Cameron LA to High Island TX out 20 NM- 1229 PM CDT Sun Aug 17 2025 .TONIGHT...Southwest winds around 5 knots, becoming northwest late. Seas 1 foot or less. Wave Detail: South 1 foot at 5 seconds. A slight chance of showers and thunderstorms early this evening. A slight chance of showers and thunderstorms late. .MONDAY...Northwest winds 5 to 10 knots, becoming west in the afternoon. Seas 1 foot or less. Wave Detail: North 1 foot at 2 seconds and south 1 foot at 5 seconds. A chance of showers and thunderstorms. .MONDAY NIGHT...Northeast winds around 5 knots. Seas 1 foot or less. Wave Detail: Southeast 1 foot at 3 seconds. A chance of showers and thunderstorms. .TUESDAY...North winds 5 to 10 knots, becoming east in the afternoon. Seas 1 foot or less. Wave Detail: Northeast 1 foot at 2 seconds. A chance of showers and thunderstorms, mainly in the morning. .TUESDAY NIGHT...South winds around 5 knots, becoming west after midnight. Seas 1 foot or less. Wave Detail: Southeast 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...Northwest winds 5 to 10 knots, becoming southwest in the afternoon. Seas 1 foot or less. Wave Detail: Northwest 1 foot at 2 seconds and east 1 foot at 3 seconds. A chance of showers and thunderstorms, mainly in the morning. .WEDNESDAY NIGHT...Southwest winds 5 to 10 knots. 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...Northwest 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 showers with a slight chance of thunderstorms in the evening, then showers likely with a chance of thunderstorms after midnight. .FRIDAY...West winds 5 to 10 knots, becoming southwest in the afternoon. Seas around 2 feet in the morning, then 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. $$ GMZ452-180600- Coastal waters from Intracoastal City to Cameron LA out 20 NM- 1229 PM CDT Sun Aug 17 2025 .TONIGHT...Northwest winds around 5 knots. Seas 1 foot or less. Wave Detail: Northwest 1 foot at 3 seconds and south 1 foot at 5 seconds. A slight chance of showers this evening. A chance of thunderstorms. A chance of showers after midnight. .MONDAY...North winds 5 to 10 knots, becoming northwest 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. .MONDAY NIGHT...Northeast winds around 5 knots. Seas 1 foot or less. Wave Detail: Southeast 1 foot at 2 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: Northeast 1 foot at 2 seconds. A chance of showers and thunderstorms. .TUESDAY NIGHT...Southwest winds around 5 knots, becoming west after midnight. Seas 1 foot or less. Wave Detail: Southeast 1 foot at 2 seconds. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. .WEDNESDAY...Northwest winds 5 to 10 knots, becoming west in the afternoon. Seas 1 foot or less. Wave Detail: Northeast 1 foot at 2 seconds. A chance of showers and thunderstorms, mainly in the morning. .WEDNESDAY NIGHT...Southwest winds 5 to 10 knots. 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...Northwest winds 5 to 10 knots, becoming west 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 showers with a slight chance of 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 likely, mainly in the morning. .FRIDAY NIGHT...Southwest 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. $$ GMZ455-180600- Coastal waters from Lower Atchafalaya River to Intracoastal City LA out 20 NM- 1229 PM CDT Sun Aug 17 2025 .TONIGHT...North winds around 5 knots. Seas 1 foot or less. A slight chance of showers this evening. A chance of thunderstorms. A chance of showers after midnight. .MONDAY...North winds around 5 knots, becoming northwest around 5 knots in the afternoon. Seas 1 foot or less. A chance of showers and thunderstorms. .MONDAY NIGHT...Northeast winds around 5 knots. Seas 1 foot or less. A chance of showers and thunderstorms. .TUESDAY...Northeast winds around 5 knots. Seas 1 foot or less. Wave Detail: Northeast 1 foot at 2 seconds. A chance of showers and thunderstorms. .TUESDAY NIGHT...South winds around 5 knots, becoming northwest 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. .WEDNESDAY...North winds around 5 knots, becoming south in the afternoon. Seas 1 foot or less. Wave Detail: Northeast 1 foot at 2 seconds. A chance of showers and thunderstorms, mainly in the morning. .WEDNESDAY NIGHT...Southwest winds around 5 knots. 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...Northwest winds around 5 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 showers with a slight chance of 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 likely, mainly in the morning. .FRIDAY NIGHT...Southwest 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. $$ GMZ470-180600- Coastal waters from Cameron LA to High Island TX from 20 to 60 NM- 1229 PM CDT Sun Aug 17 2025 .TONIGHT...Southwest winds around 5 knots, becoming west late. Seas 1 foot or less. Wave Detail: Southeast 1 foot at 5 seconds. A slight chance of showers and thunderstorms early this evening. .MONDAY...Northwest winds 5 to 10 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. .MONDAY NIGHT...Northeast winds around 5 knots, becoming east after midnight. Seas 1 foot or less. Wave Detail: East 1 foot at 4 seconds. A chance of showers and thunderstorms. .TUESDAY...North winds 5 to 10 knots, becoming northeast in the afternoon. 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, mainly in the morning. .TUESDAY NIGHT...South winds around 5 knots, becoming west after midnight. Seas 1 foot or less. Wave Detail: East 1 foot at 3 seconds. A chance of showers and thunderstorms after midnight. .WEDNESDAY...Northwest winds around 5 knots. Seas 1 foot or less. Wave Detail: North 1 foot at 2 seconds and east 1 foot at 3 seconds. A chance of showers and thunderstorms, mainly in the morning. .WEDNESDAY NIGHT...Southwest winds around 5 knots. 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...West winds 5 to 10 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 chance of showers with a slight chance of 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 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. $$ GMZ472-180600- Coastal waters from Intracoastal City to Cameron LA from 20 to 60 NM- 1229 PM CDT Sun Aug 17 2025 .TONIGHT...Northwest 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 slight chance of showers and thunderstorms early this evening. A chance of showers and thunderstorms late. .MONDAY...North winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: North 1 foot at 3 seconds and southeast 1 foot at 5 seconds. Showers and thunderstorms likely, mainly in the morning. .MONDAY NIGHT...Northeast winds around 5 knots. Seas 1 foot or less. Wave Detail: East 1 foot at 2 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: East 1 foot at 4 seconds. A chance of thunderstorms. Showers likely, mainly in the morning. .TUESDAY NIGHT...Southeast winds around 5 knots, becoming west after midnight. Seas 1 foot or less. Wave Detail: East 1 foot at 3 seconds. A chance of showers and thunderstorms after midnight. .WEDNESDAY...North winds around 5 knots. Seas 1 foot or less. Wave Detail: Northeast 1 foot at 3 seconds. A chance of showers and thunderstorms, mainly in the morning. .WEDNESDAY NIGHT...South winds around 5 knots. 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...Northwest winds around 5 knots. 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 showers with a slight chance of 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 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. $$ GMZ475-180600- Coastal waters from Lower Atchafalaya River to Intracoastal City LA from 20 to 60 NM- 1229 PM CDT Sun Aug 17 2025 .TONIGHT...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 slight chance of showers and thunderstorms early this evening. A chance of showers and thunderstorms late. .MONDAY...North winds 5 to 10 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. .MONDAY NIGHT...Northeast winds around 5 knots. Seas 1 foot or less. Wave Detail: East 1 foot at 4 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 around 5 knots. Seas 1 foot or less. Wave Detail: East 1 foot at 3 seconds. 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: East 1 foot at 3 seconds. A chance of showers and thunderstorms, mainly in the morning. .WEDNESDAY NIGHT...Southeast winds around 5 knots, becoming south after midnight. Seas 1 foot or less. A chance of showers with a slight chance of thunderstorms after midnight. .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...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 5 to 10 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. $$