National Weather Service Marine Forecast FZUS54 KLCH

FZUS54 KLCH 090106
CWFLCH

Coastal Waters Forecast
National Weather Service Lake Charles LA
806 PM CDT Thu Oct 8 2026

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.

GMZ400-091415
806 PM CDT Thu Oct 8 2026

.Synopsis for Lower Atchafalaya River LA to High Island TX out 60 NM including Sabine and Calcasieu Lakes and Vermilion and Cote Blanche Bays...

Hurricane Isaias will move northeastward through the Gulf during the next two days, likely making landfall in the Mobile-Pensacola area. While our coastal waters will not be in the direct path of the storm, it will bring gusty winds and elevated waves to all coastal waters. A small craft advisory is now in effect for all Gulf waters and will go into effect for the Vermilion Bay area Friday midday. Sustained winds of 20-30 kt will be possible for these areas, with the highest winds across eastern portions of our offshore Gulf zones. Gusts in this area may approach gale force during the day Friday. Wave heights will rise to 10 feet or greater offshore and up to 4-5 feet along the coast.

As Isaias passes to the east, rain chances will increase over the waters for tonight through Saturday morning. However, significant rain chances will be limited to our eastern marine zones as the airmass further west will be drier with more large-scale subsidence.

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GMZ430-091415
Sabine Lake
806 PM CDT Thu Oct 8 2026

SMALL CRAFT EXERCISE CAUTION IN EFFECT THROUGH LATE FRIDAY NIGHT

TONIGHT
Northeast winds 5 to 10 knots. Lake waters light chop.

FRIDAY
Northeast winds 5 to 10 knots. Lake waters light chop.

FRIDAY NIGHT
Northeast winds 5 to 10 knots. Lake waters light chop.

SATURDAY
North winds 5 to 10 knots. Lake waters light chop.

SATURDAY NIGHT
Northeast winds around 5 knots, becoming south after midnight. Lake waters smooth.

SUNDAY
South winds 5 to 10 knots. Lake waters light chop.

SUNDAY NIGHT
Southeast winds 5 to 10 knots. Lake waters light chop.

MONDAY
Southeast winds 5 to 10 knots. Lake waters light chop.

MONDAY NIGHT
Southeast winds 5 to 10 knots. Lake waters light chop.

TUESDAY
South winds 5 to 10 knots. Lake waters light chop. A slight chance of thunderstorms. A slight chance of showers in the morning, then a chance of showers in the afternoon.

TUESDAY NIGHT
South winds 5 to 10 knots. Lake waters light chop.

Winds and waves higher in and near thunderstorms.

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GMZ432-091415
Calcasieu Lake
806 PM CDT Thu Oct 8 2026

SMALL CRAFT EXERCISE CAUTION IN EFFECT THROUGH LATE FRIDAY NIGHT

TONIGHT
Northeast winds 5 to 10 knots. Lake waters light chop.

FRIDAY
Northeast winds 5 to 10 knots. Lake waters light chop.

FRIDAY NIGHT
Northeast winds 5 to 10 knots. Lake waters light chop.

SATURDAY
North winds 5 to 10 knots. Lake waters light chop.

SATURDAY NIGHT
Southeast winds around 5 knots. Lake waters smooth.

SUNDAY
South winds 5 to 10 knots. Lake waters light chop.

SUNDAY NIGHT
South winds 5 to 10 knots. Lake waters light chop.

MONDAY
Southeast winds 5 to 10 knots, increasing to 10 to 15 knots in the afternoon. Lake waters choppy.

MONDAY NIGHT
Southeast winds 5 to 10 knots. Lake waters light chop.

TUESDAY
Southeast winds 5 to 10 knots, becoming south 10 to 15 knots in the afternoon. Lake waters choppy. A slight chance of showers. A slight chance of thunderstorms in the afternoon.

TUESDAY NIGHT
South winds 5 to 10 knots. Lake waters light chop.

Winds and waves higher in and near thunderstorms.

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GMZ435-091415
Vermilion and West Cote Blanche Bays
806 PM CDT Thu Oct 8 2026

SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE FRIDAY NIGHT

TONIGHT
Northeast winds 10 to 15 knots with gusts up to 20 knots. Bay waters choppy.

FRIDAY
Northeast winds 10 to 15 knots, increasing to 15 to 20 knots in the afternoon. Bay waters rough. A chance of showers with a slight chance of thunderstorms in the afternoon.

FRIDAY NIGHT
Northeast winds 10 to 15 knots with gusts up to 30 knots. Bay waters choppy. A slight chance of showers after midnight.

SATURDAY
North winds 10 to 15 knots with gusts up to 20 knots. Bay waters choppy. A slight chance of showers in the morning.

SATURDAY NIGHT
Northeast winds 5 to 10 knots. Bay waters light chop.

SUNDAY
Northeast winds around 5 knots, becoming south in the afternoon. Bay waters light chop.

SUNDAY NIGHT
South winds 5 to 10 knots. Bay waters light chop.

MONDAY
Southeast winds 5 to 10 knots. Bay waters light chop.

MONDAY NIGHT
Southeast winds 5 to 10 knots. Bay waters light chop.

TUESDAY
Southeast winds 5 to 10 knots. Bay waters light chop.

TUESDAY NIGHT
South winds 5 to 10 knots. Bay waters light chop.

Winds and waves higher in and near thunderstorms.

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GMZ436-091415
Atchafalaya and East Cote Blanche Bays
806 PM CDT Thu Oct 8 2026

SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE FRIDAY NIGHT

TONIGHT
Northeast winds 10 to 15 knots with gusts up to 25 knots. Bay waters choppy.

FRIDAY
Northeast winds 10 to 15 knots, increasing to 15 to 20 knots in the afternoon. Gusts up to 30 knots. Bay waters rough. A chance of showers with a slight chance of thunderstorms in the afternoon.

FRIDAY NIGHT
Northeast winds 15 to 20 knots, becoming north 10 to 15 knots after midnight. Gusts up to 30 knots. Bay waters rough. A chance of showers after midnight.

SATURDAY
North winds 10 to 15 knots with gusts up to 20 knots. Bay waters choppy. A slight chance of showers in the morning.

SATURDAY NIGHT
Northeast winds 5 to 10 knots. Bay waters light chop.

SUNDAY
East winds around 5 knots, becoming south in the afternoon. Bay waters smooth.

SUNDAY NIGHT
Southeast winds around 5 knots. Bay waters smooth.

MONDAY
Southeast winds 5 to 10 knots. Bay waters light chop.

MONDAY NIGHT
Southeast winds around 5 knots. Bay waters smooth.

TUESDAY
Southeast winds around 5 knots. Bay waters smooth.

TUESDAY NIGHT
South winds around 5 knots. Bay waters smooth.

Winds and waves higher in and near thunderstorms.

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GMZ450-091415
Coastal waters from Cameron LA to High Island TX out 20 NM
806 PM CDT Thu Oct 8 2026

SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE FRIDAY NIGHT

TONIGHT
Northeast winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: East 3 feet at 5 seconds.

FRIDAY
Northeast winds 10 to 15 knots with gusts up to 20 knots. Seas 2 to 3 feet. Wave Detail: East 3 feet at 5 seconds.

FRIDAY NIGHT
Northeast winds 10 to 15 knots with gusts up to 20 knots. Seas 2 to 4 feet. Wave Detail: East 4 feet at 6 seconds.

SATURDAY
Northeast winds 10 to 15 knots, diminishing to 5 to 10 knots in the afternoon. Seas 2 to 3 feet. Wave Detail: Northeast 3 feet at 5 seconds.

SATURDAY NIGHT
East winds 5 to 10 knots, becoming south after midnight. Seas 1 foot or less. Wave Detail: Northeast 1 foot at 4 seconds.

SUNDAY
Southeast winds 5 to 10 knots. Seas around 2 feet in the morning, then 1 foot or less. Wave Detail: East 1 foot at 4 seconds.

SUNDAY NIGHT
Southeast winds 10 to 15 knots. Seas around 2 feet.

MONDAY
Southeast winds 10 to 15 knots. Seas around 2 feet.

MONDAY NIGHT
Southeast winds 10 to 15 knots. Seas around 2 feet.

TUESDAY
Southeast winds around 10 knots. Seas around 2 feet. A slight chance of showers and thunderstorms.

TUESDAY NIGHT
South winds 10 to 15 knots. Seas around 2 feet. A slight chance of showers.

Winds and seas higher in and near thunderstorms.

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GMZ452-091415
Coastal waters from Intracoastal City to Cameron LA out 20 NM
806 PM CDT Thu Oct 8 2026

SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE FRIDAY NIGHT

TONIGHT
Northeast winds 10 to 15 knots, increasing to 15 to 20 knots late this evening and overnight. Seas 2 to 4 feet. Wave Detail: East 4 feet at 5 seconds.

FRIDAY
Northeast winds 15 to 20 knots with gusts up to 30 knots. Seas 2 to 4 feet. Wave Detail: Northeast 4 feet at 5 seconds.

FRIDAY NIGHT
Northeast winds 15 to 20 knots with gusts up to 30 knots. Seas 2 to 4 feet. Wave Detail: Northeast 4 feet at 5 seconds.

SATURDAY
North winds 10 to 15 knots with gusts up to 20 knots. Seas 2 to 3 feet. Wave Detail: North 3 feet at 4 seconds.

SATURDAY NIGHT
Northeast winds 5 to 10 knots, becoming southeast after midnight. Seas around 2 feet in the evening, then 1 foot or less. Wave Detail: North 2 feet at 4 seconds, becoming northeast 1 foot at 4 seconds.

SUNDAY
Southeast winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: Northeast 1 foot at 3 seconds.

SUNDAY NIGHT
Southeast winds 5 to 10 knots. Seas around 2 feet.

MONDAY
Southeast winds around 10 knots. Seas around 2 feet.

MONDAY NIGHT
Southeast winds around 10 knots. Seas around 2 feet.

TUESDAY
Southeast winds 5 to 10 knots. Seas around 2 feet. A slight chance of showers.

TUESDAY NIGHT
South winds around 10 knots. Seas around 2 feet. A slight chance of showers after midnight.

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GMZ455-091415
Coastal waters from Lower Atchafalaya River to Intracoastal City LA out 20 NM
806 PM CDT Thu Oct 8 2026

GALE WARNING IN EFFECT THROUGH FRIDAY AFTERNOON

SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY AFTERNOON THROUGH LATE FRIDAY NIGHT

TONIGHT
Northeast winds 15 to 20 knots with gusts up to 40 knots. Seas 2 to 4 feet. Wave Detail: Northeast 4 feet at 4 seconds. A chance of showers with a slight chance of thunderstorms late this evening. A slight chance of showers and thunderstorms after midnight.

FRIDAY
Northeast winds 15 to 20 knots, increasing to 20 to 25 knots in the afternoon. Gusts up to 35 knots. Seas 2 to 4 feet. Wave Detail: Northeast 4 feet at 4 seconds. A chance of showers with a slight chance of thunderstorms.

FRIDAY NIGHT
Northeast winds 20 to 25 knots, becoming north 15 to 20 knots after midnight. Gusts up to 35 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: Northeast 5 feet at 4 seconds. A slight chance of showers.

SATURDAY
North winds 15 to 20 knots, diminishing to 10 to 15 knots in the afternoon. Seas 2 to 3 feet. Wave Detail: North 3 feet at 4 seconds. A slight chance of showers in the morning.

SATURDAY NIGHT
Northeast winds 5 to 10 knots. Seas around 2 feet in the evening, then 1 foot or less. Wave Detail: Northwest 1 foot at 3 seconds.

SUNDAY
East winds around 5 knots. Seas 1 foot or less. Wave Detail: Northeast 1 foot at 2 seconds.

SUNDAY NIGHT
Southeast winds 5 to 10 knots. Seas 1 foot or less.

MONDAY
Southeast winds 5 to 10 knots. Seas 1 foot or less.

MONDAY NIGHT
Southeast winds 5 to 10 knots. Seas 1 foot or less.

TUESDAY
Southeast winds around 5 knots. Seas 1 foot or less.

TUESDAY NIGHT
South winds around 5 knots. Seas 1 foot or less.

Winds and seas higher in and near thunderstorms.

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GMZ470-091415
Coastal waters from Cameron LA to High Island TX from 20 to 60 NM
806 PM CDT Thu Oct 8 2026

SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE FRIDAY NIGHT

TONIGHT
Northeast winds 10 to 15 knots, increasing to 15 to 20 knots late this evening and overnight. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: East 6 feet at 8 seconds.

FRIDAY
Northeast winds 15 to 20 knots with gusts up to 25 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: Northeast 6 feet at 9 seconds. A slight chance of showers and thunderstorms in the afternoon.

FRIDAY NIGHT
Northeast winds 15 to 20 knots with gusts up to 25 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: East 6 feet at 10 seconds. A slight chance of showers and thunderstorms in the evening.

SATURDAY
North winds 10 to 15 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: Northeast 5 feet at 9 seconds.

SATURDAY NIGHT
East winds 5 to 10 knots, becoming southeast after midnight. Seas 2 to 3 feet. Wave Detail: Northeast 3 feet at 6 seconds.

SUNDAY
Southeast winds 5 to 10 knots. Seas around 2 feet. Wave Detail: East 2 feet at 5 seconds.

SUNDAY NIGHT
Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas 2 to 3 feet.

MONDAY
Southeast winds 10 to 15 knots. Seas 2 to 3 feet.

MONDAY NIGHT
Southeast winds around 10 knots. Seas 2 to 3 feet. A slight chance of showers after midnight.

TUESDAY
Southeast winds around 10 knots. Seas around 2 feet. A slight chance of thunderstorms in the morning. A slight chance of showers.

TUESDAY NIGHT
Southeast winds 10 to 15 knots. Seas 2 to 3 feet. A slight chance of showers after midnight.

Winds and seas higher in and near thunderstorms.

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GMZ472-091415
Coastal waters from Intracoastal City to Cameron LA from 20 to 60 NM
806 PM CDT Thu Oct 8 2026

SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE FRIDAY NIGHT

TONIGHT
Northeast winds 20 to 25 knots with gusts up to 30 knots. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: East 7 feet at 7 seconds. A slight chance of showers and thunderstorms.

FRIDAY
Northeast winds 20 to 25 knots with gusts up to 30 knots. Seas 5 to 8 feet, occasionally to 10 feet. Wave Detail: Northeast 8 feet at 8 seconds. A slight chance of showers and thunderstorms.

FRIDAY NIGHT
Northeast winds 20 to 25 knots with gusts up to 30 knots. Seas 6 to 9 feet, occasionally to 11 feet, subsiding to 5 to 7 feet, occasionally to 9 feet after midnight. Wave Detail: Northeast 9 feet at 8 seconds, becoming northeast 7 feet at 9 seconds. A slight chance of showers in the evening.

SATURDAY
North winds 15 to 20 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: Northeast 5 feet at 7 seconds and north 2 feet at 4 seconds.

SATURDAY NIGHT
Northeast winds 10 to 15 knots, becoming southeast 5 to 10 knots after midnight. Seas 2 to 3 feet. Wave Detail: North 2 feet at 4 seconds and east 2 feet at 8 seconds.

SUNDAY
East winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Northeast 2 feet at 6 seconds.

SUNDAY NIGHT
Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas around 2 feet.

MONDAY
Southeast winds around 10 knots. Seas 2 to 3 feet. A slight chance of showers.

MONDAY NIGHT
Southeast winds around 10 knots. Seas 2 to 3 feet.

TUESDAY
Southeast winds 5 to 10 knots. Seas around 2 feet. A slight chance of showers.

TUESDAY NIGHT
Southeast winds around 10 knots. Seas around 2 feet. A slight chance of showers after midnight.

Winds and seas higher in and near thunderstorms.

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GMZ475-091415
Coastal waters from Lower Atchafalaya River to Intracoastal City LA from 20 to 60 NM
806 PM CDT Thu Oct 8 2026

GALE WARNING IN EFFECT THROUGH FRIDAY AFTERNOON

SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY AFTERNOON THROUGH LATE FRIDAY NIGHT

TONIGHT
Northeast winds 20 to 25 knots with gusts up to 40 knots. Seas 5 to 7 feet, occasionally to 9 feet, building to 6 to 9 feet, occasionally to 11 feet after midnight. Wave Detail: East 7 feet at 8 seconds, becoming east 9 feet at 8 seconds. Showers with a chance of thunderstorms this evening, then a chance of showers with a slight chance of thunderstorms after midnight.

FRIDAY
Northeast winds 20 to 25 knots with gusts up to 35 knots. Seas 7 to 10 feet, occasionally to 13 feet. Wave Detail: Northeast 10 feet at 9 seconds. Showers likely with a slight chance of thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon.

FRIDAY NIGHT
Northeast winds 25 to 30 knots, becoming north 20 to 25 knots after midnight. Seas 7 to 10 feet, occasionally to 13 feet, subsiding to 5 to 8 feet, occasionally to 10 feet after midnight. Wave Detail: Northeast 10 feet at 9 seconds, becoming northeast 8 feet at 9 seconds. A chance of showers with a slight chance of thunderstorms in the evening, then a slight chance of showers after midnight.

SATURDAY
North winds 15 to 20 knots, diminishing to 10 to 15 knots in the afternoon. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: Northeast 5 feet at 8 seconds and north 4 feet at 4 seconds. A slight chance of showers in the morning.

SATURDAY NIGHT
Northeast winds 10 to 15 knots, becoming east 5 to 10 knots after midnight. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 8 seconds and northwest 2 feet at 4 seconds.

SUNDAY
East winds 5 to 10 knots. Seas around 2 feet. Wave Detail: East 2 feet at 7 seconds and northwest 1 foot at 4 seconds.

SUNDAY NIGHT
Southeast winds 5 to 10 knots. Seas 2 to 3 feet.

MONDAY
East winds around 10 knots. Seas 2 to 3 feet. A slight chance of showers.

MONDAY NIGHT
Southeast winds 5 to 10 knots. Seas around 2 feet.

TUESDAY
Southeast winds 5 to 10 knots. Seas around 2 feet.

TUESDAY NIGHT
Southeast winds 5 to 10 knots. Seas around 2 feet.

Winds and seas higher in and near thunderstorms.