Coastal Waters Forecast
Issued by NWS Lake Charles, LA
Issued by NWS Lake Charles, LA
966 FZUS54 KLCH 300519 CWFLCH Coastal Waters Forecast National Weather Service Lake Charles LA 1219 AM CDT Sat Aug 30 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. GMZ400-301800- 1219 AM CDT Sat Aug 30 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... Scattered showers and storms will redevelop across the coastal waters today ahead of a meandering frontal boundary. This front will slide toward the coast later in the day where it will stall continuing to serve as a focus for storm development Sunday through Monday. 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. $$ GMZ430-301800- Sabine Lake- 1219 AM CDT Sat Aug 30 2025 .TODAY...Northeast winds around 5 knots, becoming southeast this afternoon. Lake waters smooth. Patchy fog early this morning. Showers likely with a chance of thunderstorms this morning, then showers with thunderstorms likely this afternoon. .TONIGHT...East winds around 5 knots. Lake waters smooth. A chance of showers and thunderstorms early in the evening, then a slight chance of showers and thunderstorms in the late evening and overnight. .SUNDAY...Northeast winds around 5 knots. Lake waters smooth. A chance of showers and thunderstorms in the morning, then showers and thunderstorms likely in the afternoon. .SUNDAY NIGHT...Northeast winds around 5 knots. Lake waters smooth. Showers and thunderstorms likely early in the evening, then a chance of showers and thunderstorms in the late evening and overnight. .MONDAY...Northeast winds around 5 knots. Lake waters smooth. A chance of showers and thunderstorms in the morning, then showers and thunderstorms likely in the afternoon. .MONDAY NIGHT...Northeast winds around 5 knots. Lake waters smooth. Showers likely in the evening. A chance of thunderstorms. A chance of showers after midnight. .TUESDAY...North winds around 5 knots. Lake waters smooth. A chance of showers. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. .TUESDAY NIGHT...Northwest winds around 5 knots. Lake waters smooth. A chance of showers and thunderstorms early in the evening, then a slight chance of showers in the late evening and early morning. .WEDNESDAY...North winds around 5 knots. Lake waters smooth. .WEDNESDAY NIGHT...North winds around 5 knots. Lake waters smooth. Winds and waves higher in and near thunderstorms. $$ GMZ432-301800- Calcasieu Lake- 1219 AM CDT Sat Aug 30 2025 .TODAY...Northeast winds around 5 knots, becoming northwest this afternoon. Lake waters smooth. Patchy fog early this morning. A chance of thunderstorms this morning. Showers likely. Thunderstorms likely this afternoon. .TONIGHT...Northeast winds around 5 knots. Lake waters smooth. Thunderstorms likely with a chance of showers early in the evening, then a slight chance of showers and thunderstorms in the late evening and early morning. A chance of showers and thunderstorms late. .SUNDAY...Northeast winds around 5 knots. Lake waters smooth. A chance of showers and thunderstorms. .SUNDAY NIGHT...Northeast winds around 5 knots. Lake waters smooth. A chance of showers and thunderstorms. .MONDAY...East winds around 5 knots. Lake waters smooth. A chance of thunderstorms. A chance of showers. .MONDAY NIGHT...Northeast winds around 5 knots. Lake waters smooth. A chance of showers. A chance of thunderstorms, mainly in the evening. .TUESDAY...North winds around 5 knots. Lake waters smooth. 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. 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. .WEDNESDAY...North winds 5 to 10 knots. Lake waters light chop. A slight chance of showers early in the morning. .WEDNESDAY NIGHT...North winds around 5 knots. Lake waters smooth. Winds and waves higher in and near thunderstorms. $$ GMZ435-301800- Vermilion and West Cote Blanche Bays- 1219 AM CDT Sat Aug 30 2025 .TODAY...Northwest winds around 5 knots. Bay waters smooth. Patchy fog early this morning. A chance of showers and thunderstorms this morning, then showers and thunderstorms likely this afternoon. .TONIGHT...Northeast winds around 5 knots. Bay waters smooth. A chance of showers and thunderstorms early in the evening. A slight chance of showers and thunderstorms after midnight, then a chance of showers and thunderstorms late. .SUNDAY...Northeast winds around 5 knots. Bay waters smooth. A chance of showers. A slight chance of thunderstorms early in the morning, then a chance of thunderstorms in the late morning and afternoon. .SUNDAY NIGHT...East winds around 5 knots. Bay waters smooth. A chance of showers and thunderstorms. .MONDAY...East winds 5 to 10 knots. Bay waters light chop. A chance of showers and thunderstorms. .MONDAY NIGHT...Northeast winds around 5 knots. Bay waters smooth. A chance of showers. A chance of thunderstorms, mainly in the evening. .TUESDAY...Northeast winds 5 to 10 knots. Bay waters light chop. A chance of showers and thunderstorms. .TUESDAY NIGHT...North winds around 5 knots. Bay waters smooth. A chance of showers and thunderstorms early in the evening, then a slight chance of showers in the late evening and overnight. .WEDNESDAY...North winds 5 to 10 knots. Bay waters light chop. A slight chance of showers and thunderstorms. .WEDNESDAY NIGHT...North winds around 5 knots. Bay waters smooth. A slight chance of showers and thunderstorms early in the evening. Winds and waves higher in and near thunderstorms. $$ GMZ436-301800- Atchafalaya and East Cote Blanche Bays- 1219 AM CDT Sat Aug 30 2025 .TODAY...Northwest winds around 5 knots. Bay waters smooth. A chance of showers and thunderstorms this morning, then showers and thunderstorms likely this afternoon. .TONIGHT...Northeast winds around 5 knots. Bay waters smooth. A chance of showers and thunderstorms. .SUNDAY...Northeast winds around 5 knots. Bay waters smooth. A chance of showers and thunderstorms in the morning, then showers and thunderstorms likely in the afternoon. .SUNDAY NIGHT...East winds around 5 knots. Bay waters smooth. A chance of showers. Thunderstorms likely early in the evening, then a chance of thunderstorms in the late evening and overnight. .MONDAY...Northeast winds 5 to 10 knots. Bay waters light chop. A chance of showers and thunderstorms in the morning, then showers and thunderstorms likely in the afternoon. .MONDAY NIGHT...East winds around 5 knots. Bay waters smooth. Showers likely in the evening. A chance of thunderstorms. A chance of showers after midnight. .TUESDAY...North winds 5 to 10 knots. Bay waters light chop. A chance of showers and thunderstorms. .TUESDAY NIGHT...North winds around 5 knots. Bay waters smooth. A chance of showers. A chance of thunderstorms early in the evening. A slight chance of thunderstorms after midnight. .WEDNESDAY...North winds 5 to 10 knots. Bay waters light chop. A slight chance of showers and thunderstorms. .WEDNESDAY NIGHT...North winds around 5 knots. Bay waters smooth. A slight chance of showers and thunderstorms early in the evening. A slight chance of showers after midnight. Winds and waves higher in and near thunderstorms. $$ GMZ450-301800- Coastal waters from Cameron LA to High Island TX out 20 NM- 1219 AM CDT Sat Aug 30 2025 .TODAY...Northwest winds 5 to 10 knots, becoming south this afternoon. Seas 1 foot or less. Wave Detail: South 1 foot at 4 seconds. Showers likely with a chance of thunderstorms this morning, then thunderstorms likely with a chance of showers this afternoon. .TONIGHT...Northeast winds around 5 knots. Seas 1 foot or less. Wave Detail: East 1 foot at 3 seconds and southwest 1 foot at 4 seconds. A chance of showers and thunderstorms. .SUNDAY...Northeast winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: East 1 foot at 4 seconds. Showers likely. A chance of thunderstorms until late afternoon, then thunderstorms likely 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 1 foot or less, then around 2 feet in the afternoon. Wave Detail: East 1 foot at 3 seconds. Thunderstorms likely. Showers likely. .MONDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet in the evening, then 1 foot or less. Wave Detail: East 1 foot at 3 seconds. A chance of showers and thunderstorms. .TUESDAY...North winds 5 to 10 knots. Seas 1 foot or less. A slight chance of thunderstorms. A chance of showers until late afternoon, then a slight chance of showers 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. .WEDNESDAY...North winds 5 to 10 knots. Seas around 2 feet in the morning, then 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 late in the morning. .WEDNESDAY NIGHT...North winds 5 to 10 knots. Seas 1 foot or less. A slight chance of showers after midnight. Winds and seas higher in and near thunderstorms. $$ GMZ452-301800- Coastal waters from Intracoastal City to Cameron LA out 20 NM- 1219 AM CDT Sat Aug 30 2025 .TODAY...Northwest winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: South 1 foot at 4 seconds. A chance of thunderstorms this morning. Showers likely. Thunderstorms likely this afternoon. .TONIGHT...North winds around 5 knots, becoming northeast after midnight. 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. .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...East 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...East winds 5 to 10 knots. Seas 1 foot or less, then around 2 feet in the afternoon. Wave Detail: East 1 foot at 3 seconds. Thunderstorms likely. Showers likely. .MONDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet in the evening, then 1 foot or less. Wave Detail: East 1 foot at 3 seconds. A chance of thunderstorms. Showers likely early in the evening, then a chance of showers in the late evening and overnight. .TUESDAY...North winds 5 to 10 knots. Seas 1 foot or less. 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 chance of showers. A slight chance of thunderstorms early in the evening. A slight chance of thunderstorms after midnight. .WEDNESDAY...North winds 5 to 10 knots. Seas around 2 feet in the morning, then 1 foot or less. A slight chance of thunderstorms. A chance of showers early in the morning, then a slight chance of showers in the late morning and afternoon. .WEDNESDAY NIGHT...North winds 5 to 10 knots. Seas 1 foot or less. A slight chance of showers after midnight. Winds and seas higher in and near thunderstorms. $$ GMZ455-301800- Coastal waters from Lower Atchafalaya River to Intracoastal City LA out 20 NM- 1219 AM CDT Sat Aug 30 2025 .TODAY...Northwest winds around 5 knots. Seas 1 foot or less. Wave Detail: South 1 foot at 3 seconds. A chance of thunderstorms this morning. Showers likely. Thunderstorms likely this afternoon. .TONIGHT...North winds around 5 knots, becoming east after midnight. Seas 1 foot or less. 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. .SUNDAY...Northeast winds around 5 knots. Seas 1 foot or less. Wave Detail: Northeast 1 foot at 2 seconds. Showers likely. A chance of thunderstorms early in the morning, then thunderstorms likely in the late morning and afternoon. .SUNDAY NIGHT...East winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: Northeast 1 foot at 2 seconds. Showers and thunderstorms likely early in the evening, then a chance of showers and thunderstorms in the late evening and overnight. .MONDAY...East winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: East 1 foot at 3 seconds. Thunderstorms likely. Showers likely. .MONDAY NIGHT...East winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: East 1 foot at 2 seconds. A chance of thunderstorms. .TUESDAY...Northeast winds 5 to 10 knots. Seas 1 foot or less. A chance of thunderstorms. Showers likely early in the morning, then a chance of showers in the late morning and afternoon. .TUESDAY NIGHT...North 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. .WEDNESDAY...North winds 5 to 10 knots. Seas 1 foot or less. A slight chance of thunderstorms. A chance of showers, mainly in the morning. .WEDNESDAY NIGHT...North winds 5 to 10 knots. Seas around 2 feet in the evening, then 1 foot or less. A slight chance of thunderstorms early in the evening. A slight chance of showers. Winds and seas higher in and near thunderstorms. $$ GMZ470-301800- Coastal waters from Cameron LA to High Island TX from 20 to 60 NM- 1219 AM CDT Sat Aug 30 2025 .TODAY...West winds 5 to 10 knots. Seas around 2 feet this morning, then 1 foot or less. Wave Detail: South 1 foot at 5 seconds. A chance of thunderstorms. A chance of showers this morning, then showers likely this afternoon. .TONIGHT...East winds around 5 knots, becoming southeast after midnight. 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. .SUNDAY...North winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: East 1 foot at 3 seconds and southwest 1 foot at 4 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: Northeast 1 foot at 3 seconds. A chance of thunderstorms. A chance of showers until early morning, then showers likely late. .MONDAY...Northeast winds 5 to 10 knots. Seas 1 foot or less, then around 2 feet in the afternoon. Wave Detail: East 1 foot at 3 seconds. Showers and thunderstorms likely until late afternoon, then showers likely with a chance of thunderstorms late. .MONDAY NIGHT...Northeast winds 5 to 10 knots. Seas around 2 feet. Wave Detail: East 1 foot at 4 seconds. A chance of showers and 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...North winds 5 to 10 knots. Seas around 2 feet. A slight chance of showers and thunderstorms early in the evening, then a chance of showers in the late evening and overnight. A slight chance of thunderstorms after midnight. .WEDNESDAY...North winds 5 to 10 knots. Seas around 2 feet. 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. .WEDNESDAY NIGHT...North winds 5 to 10 knots. Seas around 2 feet in the evening, then 1 foot or less. A slight chance of showers after midnight. Winds and seas higher in and near thunderstorms. $$ GMZ472-301800- Coastal waters from Intracoastal City to Cameron LA from 20 to 60 NM- 1219 AM CDT Sat Aug 30 2025 .TODAY...West winds around 5 knots, becoming north this afternoon. Seas 1 foot or less. Wave Detail: South 1 foot at 4 seconds. A chance of thunderstorms. Showers likely until late afternoon, then a chance of showers late. .TONIGHT...Northeast winds around 5 knots, becoming east after midnight. Seas 1 foot or less. Wave Detail: Southeast 1 foot at 4 seconds. A slight chance of showers and thunderstorms until early morning, then a chance of showers and thunderstorms late. .SUNDAY...North winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: East 1 foot at 3 seconds. Showers and thunderstorms likely until late afternoon, then showers likely with a chance of thunderstorms late. .SUNDAY NIGHT...East winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: East 1 foot at 4 seconds. A chance of thunderstorms in the evening. Showers likely. Thunderstorms likely after midnight. .MONDAY...Northeast winds around 10 knots. Seas 1 foot or less, then around 2 feet in the afternoon. Wave Detail: East 1 foot at 3 seconds. Showers and thunderstorms likely in the morning, then showers likely with a chance of thunderstorms in the afternoon. .MONDAY NIGHT...Northeast winds around 10 knots. Seas around 2 feet. Wave Detail: East 1 foot at 3 seconds and southeast 1 foot at 6 seconds. A chance of thunderstorms. .TUESDAY...North winds around 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. .WEDNESDAY...North winds around 10 knots. Seas around 2 feet. A slight chance of thunderstorms. A chance of showers until late afternoon, then a slight chance of showers late. .WEDNESDAY NIGHT...North winds 5 to 10 knots. Seas around 2 feet. A slight chance of showers and thunderstorms early in the evening. A slight chance of showers after midnight. A slight chance of thunderstorms late. Winds and seas higher in and near thunderstorms. $$ GMZ475-301800- Coastal waters from Lower Atchafalaya River to Intracoastal City LA from 20 to 60 NM- 1219 AM CDT Sat Aug 30 2025 .TODAY...West winds around 5 knots. Seas 1 foot or less. Wave Detail: Southeast 1 foot at 4 seconds. A chance of showers and thunderstorms early this morning, then showers and thunderstorms likely late this morning and early afternoon. A chance of showers and thunderstorms late. .TONIGHT...North winds around 5 knots, becoming east after midnight. Seas 1 foot or less. Wave Detail: Northwest 1 foot at 2 seconds and southeast 1 foot at 4 seconds. A slight chance of showers and thunderstorms until early morning, then a chance of showers and thunderstorms late. .SUNDAY...North winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: Northeast 1 foot at 2 seconds and southeast 1 foot at 4 seconds. Showers with thunderstorms likely until late afternoon, then showers likely with a chance of thunderstorms late. .SUNDAY 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. A chance of thunderstorms. .MONDAY...Northeast winds 5 to 10 knots. Seas around 2 feet. Wave Detail: East 1 foot at 3 seconds. Thunderstorms likely. Showers. .MONDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Southeast 2 feet at 5 seconds. A chance of thunderstorms. .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 slight chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. .WEDNESDAY...North winds 5 to 10 knots. Seas around 2 feet. A slight chance of thunderstorms. Showers likely early in the morning, then a chance of showers in the late morning and afternoon. .WEDNESDAY NIGHT...North winds 5 to 10 knots. Seas around 2 feet. 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. $$