Coastal Waters Forecast
Issued by NWS Lake Charles, LA
Issued by NWS Lake Charles, LA
084 FZUS54 KLCH 200604 CWFLCH Coastal Waters Forecast National Weather Service Lake Charles LA 1204 AM CST Thu Nov 20 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. GMZ400-201900- 1204 AM CST Thu Nov 20 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 to moderate onshore flow and seas ranging from 1 to 4 feet will prevail through the weekend into early next week as the pattern remains somewhat stagnant. While no significant fronts are expected, a couple of systems moving through the southern US will bring increased rain chances Fri through the early part of next week, with periods of showers and storms possible each day. Tonight, a Marine Dense Fog advisory remains in affect for all coastal lakes/bays through 14Z, with another possibly being needed tomorrow as moisture continues to pool over the region. $$ GMZ430-201900- Sabine Lake- 1204 AM CST Thu Nov 20 2025 ...DENSE FOG ADVISORY IN EFFECT UNTIL 8 AM CST THIS MORNING... .TODAY...Southeast winds 5 to 10 knots, increasing to 10 to 15 knots this afternoon. Lake waters choppy. Areas of dense fog early this morning. .TONIGHT...Southeast winds 5 to 10 knots. Lake waters light chop. A slight chance of thunderstorms. A slight chance of showers in the evening, then a chance of showers after midnight. .FRIDAY...South winds 5 to 10 knots. Lake waters light chop. A slight chance of thunderstorms in the morning. A chance of showers. .FRIDAY NIGHT...South winds 5 to 10 knots. Lake waters light chop. A slight chance of showers after midnight. .SATURDAY...Southwest winds around 5 knots. Lake waters smooth. A slight chance of thunderstorms in the morning. A chance of showers. .SATURDAY NIGHT...South winds around 5 knots, becoming east after midnight. Lake waters light chop. .SUNDAY...Southeast winds 5 to 10 knots. Lake waters light chop. A slight chance of showers. .SUNDAY NIGHT...Southeast winds 5 to 10 knots. Lake waters light chop. A slight chance of showers. .MONDAY...South winds 10 to 15 knots. Lake waters choppy. A chance of showers with a slight chance of thunderstorms. .MONDAY NIGHT...Southwest winds 10 to 15 knots. Lake waters choppy. Showers likely with a chance of thunderstorms in the evening, then showers likely with a slight chance of thunderstorms after midnight. Winds and waves higher in and near thunderstorms. $$ GMZ432-201900- Calcasieu Lake- 1204 AM CST Thu Nov 20 2025 ...DENSE FOG ADVISORY IN EFFECT UNTIL 8 AM CST THIS MORNING... .TODAY...Southeast winds 5 to 10 knots, increasing to 10 to 15 knots with gusts up to 20 knots this afternoon. Lake waters choppy. Areas of dense fog early this morning. .TONIGHT...Southeast winds 5 to 10 knots. Lake waters light chop. A slight chance of thunderstorms. A slight chance of showers in the evening, then a chance of showers after midnight. .FRIDAY...Southwest winds 5 to 10 knots. Lake waters light chop. A chance of showers with a slight chance of thunderstorms in the morning, then a slight chance of showers in the afternoon. .FRIDAY NIGHT...South winds 5 to 10 knots. Lake waters light chop. A slight chance of showers after midnight. .SATURDAY...Southwest winds around 5 knots. Lake waters smooth. A slight chance of thunderstorms in the morning. A chance of showers. .SATURDAY NIGHT...South winds around 5 knots, becoming east after midnight. Lake waters light chop. .SUNDAY...East winds 5 to 10 knots, becoming southeast in the afternoon. Lake waters light chop. .SUNDAY NIGHT...Southeast winds 5 to 10 knots. Lake waters light chop. A slight chance of showers after midnight. .MONDAY...South winds 10 to 15 knots, increasing to 15 to 20 knots in the afternoon. Lake waters rough. A chance of showers with a slight chance of thunderstorms. .MONDAY NIGHT...South winds 10 to 15 knots. Lake waters choppy. A chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. Winds and waves higher in and near thunderstorms. $$ GMZ435-201900- Vermilion and West Cote Blanche Bays- 1204 AM CST Thu Nov 20 2025 ...DENSE FOG ADVISORY IN EFFECT UNTIL 8 AM CST THIS MORNING... .TODAY...Southeast winds 5 to 10 knots. Bay waters light chop. Areas of dense fog early this morning. .TONIGHT...Southeast winds 10 to 15 knots. Bay waters choppy. A slight chance of showers in the evening, then a chance of showers with a slight chance of thunderstorms after midnight. .FRIDAY...South winds 5 to 10 knots. Bay waters light chop. A chance of showers with a slight chance of thunderstorms in the morning, then a slight chance of showers in the afternoon. .FRIDAY NIGHT...South winds around 5 knots. Bay waters smooth. .SATURDAY...Southwest winds around 5 knots. Bay waters smooth. A slight chance of showers. .SATURDAY NIGHT...Southwest winds around 5 knots, becoming north after midnight. Bay waters smooth. .SUNDAY...East winds 5 to 10 knots, becoming southeast in the afternoon. Bay waters light chop. .SUNDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters light chop. A slight chance of showers after midnight. .MONDAY...Southeast winds 10 to 15 knots. Bay waters choppy. A slight chance of showers in the morning, then a chance of showers with a slight chance of thunderstorms in the afternoon. .MONDAY NIGHT...South winds 10 to 15 knots. Bay waters choppy. A chance of showers. A slight chance of thunderstorms after midnight. Winds and waves higher in and near thunderstorms. $$ GMZ436-201900- Atchafalaya and East Cote Blanche Bays- 1204 AM CST Thu Nov 20 2025 ...DENSE FOG ADVISORY IN EFFECT UNTIL 8 AM CST THIS MORNING... .TODAY...Southeast winds 5 to 10 knots. Bay waters light chop. Patchy dense fog early this morning. .TONIGHT...Southeast winds 5 to 10 knots. Bay waters light chop. A slight chance of showers in the evening, then a chance of showers with a slight chance of thunderstorms after midnight. .FRIDAY...South winds 5 to 10 knots. Bay waters light chop. A chance of showers with a slight chance of thunderstorms in the morning, then a slight chance of showers in the afternoon. .FRIDAY NIGHT...South winds around 5 knots. Bay waters smooth. .SATURDAY...Southwest winds around 5 knots. Bay waters smooth. A slight chance of showers in the afternoon. .SATURDAY NIGHT...Southwest winds around 5 knots, becoming northeast after midnight. Bay waters smooth. .SUNDAY...East winds around 5 knots, becoming southeast in the afternoon. Bay waters smooth. .SUNDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters light chop. A slight chance of showers after midnight. .MONDAY...Southeast winds 5 to 10 knots. Bay waters light chop. A slight chance of showers. .MONDAY NIGHT...South winds 5 to 10 knots. Bay waters light chop. A chance of showers. A slight chance of thunderstorms after midnight. Winds and waves higher in and near thunderstorms. $$ GMZ450-201900- Coastal waters from Cameron LA to High Island TX out 20 NM- 1204 AM CST Thu Nov 20 2025 .TODAY...Southeast winds around 10 knots. Seas around 2 feet. Wave Detail: Southeast 2 feet at 5 seconds. Patchy fog early this morning. .TONIGHT...Southeast winds 10 to 15 knots. Seas around 2 feet. Wave Detail: Southeast 2 feet at 5 seconds. A slight chance of thunderstorms. A slight chance of showers in the evening, then a chance of showers after midnight. .FRIDAY...South winds around 10 knots. Seas around 2 feet. Wave Detail: Southeast 2 feet at 6 seconds. A chance of showers, mainly in the morning. .FRIDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet. Wave Detail: South 2 feet at 6 seconds. A slight chance of showers after midnight. .SATURDAY...South winds 5 to 10 knots. Seas around 2 feet. Wave Detail: South 1 foot at 6 seconds. A chance of showers with a slight chance of thunderstorms in the morning, then a slight chance of showers in the afternoon. .SATURDAY NIGHT...South winds 5 to 10 knots, becoming east after midnight. Seas around 2 feet. Wave Detail: Southeast 2 feet at 3 seconds and south 2 feet at 6 seconds. .SUNDAY...East winds around 10 knots. Seas around 2 feet. A slight chance of showers. .SUNDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to 3 feet. A slight chance of showers in the evening, then a chance of showers after midnight. .MONDAY...South winds 10 to 15 knots. Seas 2 to 3 feet. A chance of showers with a slight chance of thunderstorms. .MONDAY NIGHT...Southwest winds 10 to 15 knots. Seas 2 to 3 feet. A chance of thunderstorms. Showers likely. Winds and seas higher in and near thunderstorms. $$ GMZ452-201900- Coastal waters from Intracoastal City to Cameron LA out 20 NM- 1204 AM CST Thu Nov 20 2025 .TODAY...Southeast winds 10 to 15 knots. Seas around 2 feet. Wave Detail: Southeast 2 feet at 5 seconds. Patchy fog early this morning. .TONIGHT...Southeast winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 4 seconds. A chance of showers with a slight chance of thunderstorms. .FRIDAY...Southwest winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: South 3 feet at 6 seconds. A chance of showers with a slight chance of thunderstorms in the morning, then a slight chance of showers in the afternoon. .FRIDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet. Wave Detail: South 2 feet at 6 seconds. A slight chance of showers after midnight. .SATURDAY...South winds 5 to 10 knots. Seas around 2 feet. Wave Detail: South 1 foot at 6 seconds. A slight chance of showers. .SATURDAY NIGHT...South winds 5 to 10 knots, becoming east after midnight. Seas around 2 feet. Wave Detail: South 2 feet at 6 seconds and southeast 1 foot at 2 seconds. .SUNDAY...East winds around 10 knots. Seas around 2 feet. .SUNDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to 3 feet. A slight chance of showers. .MONDAY...South winds 10 to 15 knots. Seas 2 to 3 feet. A chance of showers with a slight chance of thunderstorms. .MONDAY NIGHT...South winds around 15 knots. Seas 2 to 3 feet. A slight chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. Winds and seas higher in and near thunderstorms. $$ GMZ455-201900- Coastal waters from Lower Atchafalaya River to Intracoastal City LA out 20 NM- 1204 AM CST Thu Nov 20 2025 .TODAY...Southeast winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Southeast 1 foot at 2 seconds. .TONIGHT...Southeast winds 10 to 15 knots. Seas around 2 feet. Wave Detail: Southeast 2 feet at 3 seconds. A chance of showers. A slight chance of thunderstorms after midnight. .FRIDAY...South winds 5 to 10 knots. Seas around 2 feet. Wave Detail: South 1 foot at 2 seconds. A chance of showers with a slight chance of thunderstorms in the morning, then a slight chance of showers in the afternoon. .FRIDAY NIGHT...South winds around 5 knots. Seas around 2 feet in the evening, then 1 foot or less. Wave Detail: Southwest 1 foot at 4 seconds, becoming south 1 foot at 5 seconds. .SATURDAY...South winds around 5 knots. Seas 1 foot or less. A slight chance of showers. .SATURDAY NIGHT...Southwest winds around 5 knots, becoming east after midnight. Seas 1 foot or less. .SUNDAY...East winds 5 to 10 knots, becoming southeast in the afternoon. Seas 1 foot or less. .SUNDAY NIGHT...Southeast winds 5 to 10 knots. Seas around 2 feet. A slight chance of showers after midnight. .MONDAY...Southeast winds 10 to 15 knots. Seas around 2 feet. A slight chance of showers. A slight chance of thunderstorms in the afternoon. .MONDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet. A chance of showers. A slight chance of thunderstorms after midnight. Winds and seas higher in and near thunderstorms. $$ GMZ470-201900- Coastal waters from Cameron LA to High Island TX from 20 to 60 NM- 1204 AM CST Thu Nov 20 2025 .TODAY...Southeast winds around 10 knots. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 5 seconds. A slight chance of showers late. .TONIGHT...Southeast winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 5 seconds. A slight chance of thunderstorms. A chance of showers, mainly in the evening. .FRIDAY...Southwest winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: South 3 feet at 6 seconds. A slight chance of showers. .FRIDAY NIGHT...South winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: South 3 feet at 6 seconds. A slight chance of showers after midnight. .SATURDAY...Southeast winds around 5 knots. Seas 2 to 3 feet. Wave Detail: South 2 feet at 6 seconds. A chance of showers with a slight chance of thunderstorms in the morning, then a slight chance of showers in the afternoon. .SATURDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: South 3 feet at 6 seconds. .SUNDAY...Southeast winds around 10 knots. Seas 2 to 3 feet. A slight chance of showers. .SUNDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to 3 feet. A slight chance of showers. .MONDAY...South winds around 15 knots. Seas 3 to 4 feet. A chance of showers with a slight chance of thunderstorms. .MONDAY NIGHT...South winds around 15 knots. Seas 3 to 4 feet. A chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. Winds and seas higher in and near thunderstorms. $$ GMZ472-201900- Coastal waters from Intracoastal City to Cameron LA from 20 to 60 NM- 1204 AM CST Thu Nov 20 2025 .TODAY...Southeast winds around 10 knots. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 5 seconds. A slight chance of showers and thunderstorms late. .TONIGHT...Southeast winds 10 to 15 knots, becoming south after midnight. Seas 3 to 4 feet. Wave Detail: Southeast 4 feet at 6 seconds. A chance of showers with a slight chance of thunderstorms. .FRIDAY...Southwest winds 5 to 10 knots. Seas 3 to 4 feet. Wave Detail: South 4 feet at 6 seconds. A slight chance of showers. .FRIDAY NIGHT...South winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: South 3 feet at 6 seconds. A slight chance of showers after midnight. .SATURDAY...South winds around 5 knots. Seas 2 to 3 feet. Wave Detail: South 3 feet at 6 seconds. A slight chance of showers. A slight chance of thunderstorms in the afternoon. .SATURDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: South 3 feet at 6 seconds. .SUNDAY...East winds around 10 knots. Seas 2 to 3 feet. .SUNDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to 3 feet. A slight chance of showers. .MONDAY...South winds 10 to 15 knots. Seas 3 to 4 feet. A slight chance of thunderstorms. A slight chance of showers in the morning, then a chance of showers in the afternoon. .MONDAY NIGHT...South winds 10 to 15 knots. Seas 3 to 4 feet. A chance of showers with a slight chance of thunderstorms. Winds and seas higher in and near thunderstorms. $$ GMZ475-201900- Coastal waters from Lower Atchafalaya River to Intracoastal City LA from 20 to 60 NM- 1204 AM CST Thu Nov 20 2025 .TODAY...Southeast winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 5 seconds. A slight chance of showers late. .TONIGHT...Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: Southeast 5 feet at 6 seconds. A chance of showers with a slight chance of thunderstorms. .FRIDAY...South winds 10 to 15 knots, becoming southwest 5 to 10 knots in the afternoon. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: Southeast 5 feet at 7 seconds. A chance of showers with a slight chance of thunderstorms in the morning, then a slight chance of showers in the afternoon. .FRIDAY NIGHT...South winds around 5 knots. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 7 seconds and southwest 1 foot at 4 seconds. .SATURDAY...Southeast winds around 5 knots. Seas 2 to 3 feet. Wave Detail: South 3 feet at 6 seconds. .SATURDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: South 3 feet at 6 seconds. .SUNDAY...East winds around 10 knots. Seas 2 to 3 feet. .SUNDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to 3 feet. A slight chance of showers. .MONDAY...Southeast winds 10 to 15 knots. Seas 2 to 3 feet. A slight chance of showers. A slight chance of thunderstorms in the afternoon. .MONDAY NIGHT...South winds 10 to 15 knots. Seas 3 to 4 feet. A chance of showers. A slight chance of thunderstorms after midnight. Winds and seas higher in and near thunderstorms. $$