312
FZUS54 KLCH 132009
CWFLCH
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE LAKE CHARLES LA
309 PM CDT THU AUG 13 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.
GMZ400-140900-
309 PM CDT THU AUG 13 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...
WEAK SURFACE HIGH PRESSURE WILL BE LOCATED OVER THE NORTHERN GULF
INTO EARLY NEXT WEEK. THIS WILL BRING MAINLY LIGHT SOUTHERLY WINDS,
OCCASIONALLY MODEST AT NIGHT, AND LOW SEAS INTO NEXT WEEK. HIGH
PRESSURE ALOFT WILL BUILD IN THAT WILL KEEP SHOWER ACTIVITY AT A
MINIMUM AT BEST.
GMZ430-140900-
SABINE LAKE-
309 PM CDT THU AUG 13 2026
TONIGHT
SOUTH WINDS 5 TO 10 KNOTS. LAKE WATERS LIGHT CHOP.
FRIDAY
SOUTH WINDS 5 TO 10 KNOTS. LAKE WATERS LIGHT CHOP. A
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE AFTERNOON.
FRIDAY NIGHT
SOUTH WINDS 5 TO 10 KNOTS. LAKE WATERS LIGHT
CHOP.
SATURDAY
SOUTH WINDS AROUND 5 KNOTS, INCREASING TO 5 TO
10 KNOTS IN THE AFTERNOON. LAKE WATERS LIGHT CHOP.
SATURDAY NIGHT
SOUTHWEST WINDS 5 TO 10 KNOTS. LAKE WATERS
LIGHT CHOP.
SUNDAY
LIGHT AND VARIABLE WINDS, BECOMING SOUTH 5 TO 10 KNOTS
IN THE AFTERNOON. LAKE WATERS LIGHT CHOP.
SUNDAY NIGHT
SOUTHWEST WINDS 5 TO 10 KNOTS. LAKE WATERS LIGHT
CHOP.
MONDAY
WEST WINDS AROUND 5 KNOTS, BECOMING SOUTHWEST IN THE
AFTERNOON. LAKE WATERS LIGHT CHOP.
MONDAY NIGHT
SOUTHWEST WINDS 5 TO 10 KNOTS. LAKE WATERS LIGHT
CHOP.
TUESDAY
SOUTHWEST WINDS 5 TO 10 KNOTS. LAKE WATERS LIGHT CHOP.
TUESDAY NIGHT
SOUTHWEST WINDS 5 TO 10 KNOTS. LAKE WATERS LIGHT
CHOP.
WINDS AND WAVES HIGHER IN AND NEAR THUNDERSTORMS.
GMZ432-140900-
CALCASIEU LAKE-
309 PM CDT THU AUG 13 2026
TONIGHT
SOUTH WINDS 10 TO 15 KNOTS, DIMINISHING TO 5 TO
10 KNOTS AFTER MIDNIGHT. LAKE WATERS CHOPPY.
FRIDAY
SOUTH WINDS 5 TO 10 KNOTS. LAKE WATERS LIGHT CHOP.
FRIDAY NIGHT
SOUTH WINDS 5 TO 10 KNOTS. LAKE WATERS LIGHT
CHOP.
SATURDAY
SOUTHWEST WINDS AROUND 5 KNOTS, BECOMING SOUTH IN THE
AFTERNOON. LAKE WATERS LIGHT CHOP.
SATURDAY NIGHT
SOUTHWEST WINDS 5 TO 10 KNOTS. LAKE WATERS
LIGHT CHOP.
SUNDAY
WEST WINDS AROUND 5 KNOTS, BECOMING SOUTHWEST IN THE
AFTERNOON. LAKE WATERS LIGHT CHOP.
SUNDAY NIGHT
SOUTHWEST WINDS 5 TO 10 KNOTS. LAKE WATERS LIGHT
CHOP.
MONDAY
WEST WINDS AROUND 5 KNOTS, BECOMING SOUTHWEST IN THE
AFTERNOON. LAKE WATERS LIGHT CHOP.
MONDAY NIGHT
SOUTHWEST WINDS 5 TO 10 KNOTS. LAKE WATERS LIGHT
CHOP.
TUESDAY
SOUTHWEST WINDS 5 TO 10 KNOTS. LAKE WATERS LIGHT CHOP.
TUESDAY NIGHT
SOUTHWEST WINDS 5 TO 10 KNOTS. LAKE WATERS LIGHT
CHOP.
GMZ435-140900-
VERMILION AND WEST COTE BLANCHE BAYS-
309 PM CDT THU AUG 13 2026
TONIGHT
SOUTH WINDS 5 TO 10 KNOTS. BAY WATERS LIGHT CHOP.
FRIDAY
SOUTH WINDS 5 TO 10 KNOTS. BAY WATERS LIGHT CHOP.
FRIDAY NIGHT
SOUTH WINDS 5 TO 10 KNOTS. BAY WATERS LIGHT CHOP.
SATURDAY
WEST WINDS AROUND 5 KNOTS, BECOMING SOUTH IN THE
AFTERNOON. BAY WATERS LIGHT CHOP.
SATURDAY NIGHT
SOUTHWEST WINDS 5 TO 10 KNOTS. BAY WATERS LIGHT
CHOP.
SUNDAY
NORTHWEST WINDS AROUND 5 KNOTS, BECOMING SOUTHWEST IN
THE AFTERNOON. BAY WATERS LIGHT CHOP.
SUNDAY NIGHT
SOUTHWEST WINDS 5 TO 10 KNOTS. BAY WATERS LIGHT
CHOP. A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE
EVENING.
MONDAY
WEST WINDS AROUND 5 KNOTS, BECOMING SOUTHWEST IN THE
AFTERNOON. BAY WATERS LIGHT CHOP. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON.
MONDAY NIGHT
SOUTHWEST WINDS 5 TO 10 KNOTS. BAY WATERS LIGHT
CHOP.
TUESDAY
SOUTHWEST WINDS 5 TO 10 KNOTS. BAY WATERS LIGHT CHOP.
TUESDAY NIGHT
SOUTHWEST WINDS 5 TO 10 KNOTS. BAY WATERS LIGHT
CHOP.
WINDS AND WAVES HIGHER IN AND NEAR THUNDERSTORMS.
GMZ436-140900-
ATCHAFALAYA AND EAST COTE BLANCHE BAYS-
309 PM CDT THU AUG 13 2026
TONIGHT
SOUTH WINDS 5 TO 10 KNOTS. BAY WATERS LIGHT CHOP.
FRIDAY
SOUTH WINDS 5 TO 10 KNOTS. BAY WATERS LIGHT CHOP.
FRIDAY NIGHT
SOUTH WINDS 5 TO 10 KNOTS. BAY WATERS LIGHT CHOP.
SATURDAY
WEST WINDS AROUND 5 KNOTS, BECOMING SOUTHWEST IN THE
AFTERNOON. BAY WATERS LIGHT CHOP.
SATURDAY NIGHT
SOUTHWEST WINDS AROUND 5 KNOTS. BAY WATERS
SMOOTH.
SUNDAY
WEST WINDS AROUND 5 KNOTS. BAY WATERS SMOOTH. A SLIGHT
CHANCE OF SHOWERS AND THUNDERSTORMS IN THE AFTERNOON.
SUNDAY NIGHT
SOUTHWEST WINDS AROUND 5 KNOTS. BAY WATERS
SMOOTH. A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE
EVENING.
MONDAY
WEST WINDS AROUND 5 KNOTS, BECOMING SOUTHWEST IN THE
AFTERNOON. BAY WATERS LIGHT CHOP. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON.
MONDAY NIGHT
SOUTHWEST WINDS 5 TO 10 KNOTS. BAY WATERS LIGHT
CHOP.
TUESDAY
SOUTHWEST WINDS 5 TO 10 KNOTS. BAY WATERS LIGHT CHOP.
TUESDAY NIGHT
SOUTHWEST WINDS 5 TO 10 KNOTS. BAY WATERS LIGHT
CHOP.
WINDS AND WAVES HIGHER IN AND NEAR THUNDERSTORMS.
GMZ450-140900-
COASTAL WATERS FROM CAMERON LA TO HIGH ISLAND TX OUT 20 NM-
309 PM CDT THU AUG 13 2026
TONIGHT
SOUTH WINDS 10 TO 15 KNOTS. SEAS 2 TO 3 FEET. WAVE
DETAIL: SOUTH 3 FEET AT 5 SECONDS.
FRIDAY
SOUTH WINDS 10 TO 15 KNOTS. SEAS AROUND 2 FEET. WAVE
DETAIL: SOUTH 2 FEET AT 5 SECONDS. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON.
FRIDAY NIGHT
SOUTH WINDS 10 TO 15 KNOTS. SEAS AROUND 2 FEET.
WAVE DETAIL: SOUTH 2 FEET AT 5 SECONDS.
SATURDAY
SOUTH WINDS 5 TO 10 KNOTS. SEAS AROUND 2 FEET. WAVE
DETAIL: SOUTH 2 FEET AT 5 SECONDS.
SATURDAY NIGHT
SOUTH WINDS 5 TO 10 KNOTS. SEAS AROUND 2 FEET.
WAVE DETAIL: SOUTH 2 FEET AT 4 SECONDS.
SUNDAY
WEST WINDS 5 TO 10 KNOTS, BECOMING SOUTH IN THE
AFTERNOON. SEAS AROUND 2 FEET IN THE MORNING, THEN 1 FOOT OR
LESS. WAVE DETAIL: SOUTH 1 FOOT AT 5 SECONDS, BECOMING SOUTH
1 FOOT AT 2 SECONDS AND SOUTH 1 FOOT AT 5 SECONDS.
SUNDAY NIGHT
SOUTH WINDS 5 TO 10 KNOTS. SEAS AROUND 2 FEET.
MONDAY
SOUTHWEST WINDS 5 TO 10 KNOTS. SEAS AROUND 2 FEET IN
THE MORNING, THEN 1 FOOT OR LESS.
MONDAY NIGHT
SOUTHWEST WINDS AROUND 10 KNOTS. SEAS AROUND
2 FEET.
TUESDAY
SOUTHWEST WINDS 5 TO 10 KNOTS. SEAS AROUND 2 FEET.
TUESDAY NIGHT
SOUTHWEST WINDS 10 TO 15 KNOTS. SEAS AROUND
2 FEET.
WINDS AND SEAS HIGHER IN AND NEAR THUNDERSTORMS.
GMZ452-140900-
COASTAL WATERS FROM INTRACOASTAL CITY TO CAMERON LA OUT 20 NM-
309 PM CDT THU AUG 13 2026
TONIGHT
SOUTH WINDS 10 TO 15 KNOTS. SEAS 2 TO 3 FEET. WAVE
DETAIL: SOUTH 2 FEET AT 5 SECONDS.
FRIDAY
SOUTH WINDS 5 TO 10 KNOTS. SEAS AROUND 2 FEET. WAVE
DETAIL: SOUTH 2 FEET AT 5 SECONDS.
FRIDAY NIGHT
SOUTH WINDS 10 TO 15 KNOTS, DIMINISHING TO 5 TO
10 KNOTS AFTER MIDNIGHT. SEAS AROUND 2 FEET. WAVE DETAIL: SOUTH
2 FEET AT 5 SECONDS.
SATURDAY
SOUTHWEST WINDS AROUND 5 KNOTS, BECOMING SOUTH IN THE
AFTERNOON. SEAS AROUND 2 FEET. WAVE DETAIL: SOUTH 2 FEET AT
5 SECONDS.
SATURDAY NIGHT
SOUTH WINDS 5 TO 10 KNOTS. SEAS AROUND 2 FEET.
WAVE DETAIL: SOUTH 2 FEET AT 5 SECONDS.
SUNDAY
WEST WINDS AROUND 5 KNOTS, BECOMING SOUTHWEST IN THE
AFTERNOON. SEAS AROUND 2 FEET IN THE MORNING, THEN 1 FOOT OR
LESS. WAVE DETAIL: SOUTH 1 FOOT AT 5 SECONDS, BECOMING SOUTHWEST
1 FOOT AT 2 SECONDS AND SOUTH 1 FOOT AT 5 SECONDS.
SUNDAY NIGHT
SOUTHWEST WINDS 5 TO 10 KNOTS. SEAS AROUND
2 FEET. A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE
EVENING.
MONDAY
SOUTHWEST WINDS 5 TO 10 KNOTS. SEAS 1 FOOT OR LESS.
MONDAY NIGHT
SOUTHWEST WINDS AROUND 10 KNOTS. SEAS AROUND
2 FEET.
TUESDAY
SOUTHWEST WINDS 5 TO 10 KNOTS. SEAS AROUND 2 FEET IN
THE MORNING, THEN 1 FOOT OR LESS.
TUESDAY NIGHT
SOUTHWEST WINDS AROUND 10 KNOTS. SEAS AROUND
2 FEET.
WINDS AND SEAS HIGHER IN AND NEAR THUNDERSTORMS.
GMZ455-140900-
COASTAL WATERS FROM LOWER ATCHAFALAYA RIVER TO INTRACOASTAL CITY
LA OUT 20 NM-
309 PM CDT THU AUG 13 2026
TONIGHT
SOUTH WINDS 5 TO 10 KNOTS. SEAS AROUND 2 FEET. WAVE
DETAIL: SOUTH 1 FOOT AT 3 SECONDS.
FRIDAY
SOUTH WINDS 5 TO 10 KNOTS. SEAS 1 TO 2 FEET IN THE
MORNING, THEN 1 FOOT OR LESS. WAVE DETAIL: SOUTH 1 FOOT AT
4 SECONDS.
FRIDAY NIGHT
SOUTH WINDS 5 TO 10 KNOTS. SEAS AROUND 2 FEET.
SATURDAY
SOUTHWEST WINDS AROUND 5 KNOTS, BECOMING SOUTH IN THE
AFTERNOON. SEAS 1 FOOT OR LESS.
SATURDAY NIGHT
SOUTHWEST WINDS AROUND 5 KNOTS. SEAS 1 FOOT OR
LESS. WAVE DETAIL: SOUTHWEST 1 FOOT AT 2 SECONDS.
SUNDAY
WEST WINDS AROUND 5 KNOTS. SEAS 1 FOOT OR LESS.
SUNDAY NIGHT
SOUTHWEST WINDS AROUND 5 KNOTS. SEAS 1 FOOT OR
LESS. A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE
EVENING.
MONDAY
WEST WINDS AROUND 5 KNOTS. SEAS 1 FOOT OR LESS. A
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE AFTERNOON.
MONDAY NIGHT
SOUTHWEST WINDS 5 TO 10 KNOTS. SEAS 1 FOOT OR
LESS.
TUESDAY
SOUTHWEST WINDS 5 TO 10 KNOTS. SEAS 1 FOOT OR LESS.
TUESDAY NIGHT
SOUTHWEST WINDS 5 TO 10 KNOTS. SEAS 1 FOOT OR
LESS.
WINDS AND SEAS HIGHER IN AND NEAR THUNDERSTORMS.
GMZ470-140900-
COASTAL WATERS FROM CAMERON LA TO HIGH ISLAND TX FROM 20 TO 60 NM-
309 PM CDT THU AUG 13 2026
TONIGHT
SOUTH WINDS 10 TO 15 KNOTS WITH GUSTS UP TO 20 KNOTS.
SEAS 2 TO 3 FEET. WAVE DETAIL: SOUTH 3 FEET AT 5 SECONDS.
FRIDAY
SOUTH WINDS AROUND 10 KNOTS. SEAS 2 TO 3 FEET. WAVE
DETAIL: SOUTH 3 FEET AT 5 SECONDS. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE MORNING.
FRIDAY NIGHT
SOUTH WINDS 10 TO 15 KNOTS. SEAS 2 TO 3 FEET.
WAVE DETAIL: SOUTH 3 FEET AT 6 SECONDS.
SATURDAY
SOUTH WINDS 5 TO 10 KNOTS. SEAS 2 TO 3 FEET. WAVE
DETAIL: SOUTH 2 FEET AT 5 SECONDS.
SATURDAY NIGHT
SOUTH WINDS 5 TO 10 KNOTS. SEAS AROUND 2 FEET.
WAVE DETAIL: SOUTH 2 FEET AT 6 SECONDS.
SUNDAY
SOUTHWEST WINDS AROUND 5 KNOTS, BECOMING SOUTHEAST IN
THE AFTERNOON. SEAS AROUND 2 FEET. WAVE DETAIL: SOUTH 2 FEET AT
6 SECONDS.
SUNDAY NIGHT
SOUTH WINDS 5 TO 10 KNOTS. SEAS AROUND 2 FEET.
MONDAY
SOUTHWEST WINDS AROUND 5 KNOTS. SEAS AROUND 2 FEET IN
THE MORNING, THEN 1 FOOT OR LESS.
MONDAY NIGHT
SOUTH WINDS 5 TO 10 KNOTS. SEAS AROUND 2 FEET.
TUESDAY
SOUTHWEST WINDS 5 TO 10 KNOTS. SEAS AROUND 2 FEET IN
THE MORNING, THEN 1 FOOT OR LESS.
TUESDAY NIGHT
SOUTH WINDS 5 TO 10 KNOTS. SEAS AROUND 2 FEET.
WINDS AND SEAS HIGHER IN AND NEAR THUNDERSTORMS.
GMZ472-140900-
COASTAL WATERS FROM INTRACOASTAL CITY TO CAMERON LA FROM 20 TO
60 NM-
309 PM CDT THU AUG 13 2026
TONIGHT
SOUTH WINDS 10 TO 15 KNOTS. SEAS 2 TO 3 FEET. WAVE
DETAIL: SOUTH 3 FEET AT 6 SECONDS.
FRIDAY
SOUTH WINDS 5 TO 10 KNOTS. SEAS 2 TO 3 FEET. WAVE
DETAIL: SOUTH 2 FEET AT 5 SECONDS. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE MORNING.
FRIDAY NIGHT
SOUTH WINDS 5 TO 10 KNOTS. SEAS 2 TO 3 FEET. WAVE
DETAIL: SOUTH 2 FEET AT 6 SECONDS.
SATURDAY
SOUTH WINDS AROUND 5 KNOTS. SEAS AROUND 2 FEET. WAVE
DETAIL: SOUTH 2 FEET AT 5 SECONDS.
SATURDAY NIGHT
SOUTH WINDS 5 TO 10 KNOTS. SEAS AROUND 2 FEET.
WAVE DETAIL: SOUTH 2 FEET AT 6 SECONDS.
SUNDAY
WEST WINDS AROUND 5 KNOTS, BECOMING EAST IN THE
AFTERNOON. SEAS AROUND 2 FEET. WAVE DETAIL: SOUTH 2 FEET AT
6 SECONDS.
SUNDAY NIGHT
SOUTH WINDS 5 TO 10 KNOTS. SEAS AROUND 2 FEET.
MONDAY
SOUTHWEST WINDS AROUND 5 KNOTS. SEAS 1 FOOT OR LESS.
MONDAY NIGHT
SOUTHWEST WINDS 5 TO 10 KNOTS. SEAS 1 FOOT OR
LESS, THEN AROUND 2 FEET AFTER MIDNIGHT.
TUESDAY
SOUTHWEST WINDS 5 TO 10 KNOTS. SEAS AROUND 2 FEET IN
THE MORNING, THEN 1 FOOT OR LESS.
TUESDAY NIGHT
SOUTHWEST WINDS 5 TO 10 KNOTS. SEAS AROUND
2 FEET.
WINDS AND SEAS HIGHER IN AND NEAR THUNDERSTORMS.
GMZ475-140900-
COASTAL WATERS FROM LOWER ATCHAFALAYA RIVER TO INTRACOASTAL CITY
LA FROM 20 TO 60 NM-
309 PM CDT THU AUG 13 2026
TONIGHT
SOUTH WINDS 10 TO 15 KNOTS. SEAS 2 TO 3 FEET. WAVE
DETAIL: SOUTH 2 FEET AT 6 SECONDS.
FRIDAY
SOUTH WINDS 5 TO 10 KNOTS. SEAS AROUND 2 FEET. WAVE
DETAIL: SOUTH 2 FEET AT 5 SECONDS. A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE MORNING.
FRIDAY NIGHT
SOUTH WINDS 5 TO 10 KNOTS. SEAS AROUND 2 FEET.
WAVE DETAIL: SOUTH 2 FEET AT 5 SECONDS.
SATURDAY
SOUTHEAST WINDS AROUND 5 KNOTS. SEAS AROUND 2 FEET.
WAVE DETAIL: SOUTH 2 FEET AT 5 SECONDS.
SATURDAY NIGHT
SOUTH WINDS AROUND 5 KNOTS. SEAS AROUND 2 FEET.
WAVE DETAIL: SOUTH 2 FEET AT 5 SECONDS.
SUNDAY
NORTHWEST WINDS AROUND 5 KNOTS, BECOMING EAST IN THE
AFTERNOON. SEAS AROUND 2 FEET. WAVE DETAIL: SOUTH 2 FEET AT
6 SECONDS.
SUNDAY NIGHT
SOUTH WINDS AROUND 5 KNOTS. SEAS AROUND 2 FEET IN
THE EVENING, THEN 1 FOOT OR LESS.
MONDAY
WEST WINDS AROUND 5 KNOTS. SEAS 1 FOOT OR LESS.
MONDAY NIGHT
SOUTHWEST WINDS 5 TO 10 KNOTS. SEAS 1 FOOT OR
LESS, THEN AROUND 2 FEET AFTER MIDNIGHT.
TUESDAY
SOUTHWEST WINDS 5 TO 10 KNOTS. SEAS AROUND 2 FEET IN
THE MORNING, THEN 1 FOOT OR LESS.
TUESDAY NIGHT
SOUTHWEST WINDS 5 TO 10 KNOTS. SEAS 1 FOOT OR
LESS, THEN AROUND 2 FEET AFTER MIDNIGHT.
WINDS AND SEAS HIGHER IN AND NEAR THUNDERSTORMS.
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