574
FZUS54 KLCH 122009
CWFLCH
COASTAL WATERS FORECAST
NATIONAL WEATHER SERVICE LAKE CHARLES LA
309 PM CDT WED AUG 12 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.
GMZ400-130900-
309 PM CDT WED AUG 12 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...
SURFACE HIGH PRESSURE WILL RIDGE ACROSS THE NORTHERN GULF AND INTO
THE COASTAL WATERS FOR THE REMAINDER OF THE WEEK INTO THE WEEKEND.
THIS WILL KEEP A MAINLY LIGHT TO OCCASIONALLY MODEST SOUTHERLY FLOW
IN PLACE. THE HIGHER WINDS WILL BE AT NIGHT. SEAS WILL REMAIN ON THE
LOW SIDE. HIGH PRESSURE ALOFT WILL BUILD IN THAT WILL KEEP SHOWER
ACTIVITY AT A MINIMUM AT BEST.
GMZ430-130900-
SABINE LAKE-
309 PM CDT WED AUG 12 2026
TONIGHT
SOUTH WINDS 5 TO 10 KNOTS. LAKE WATERS LIGHT CHOP.
THURSDAY
SOUTH WINDS 5 TO 10 KNOTS. LAKE WATERS LIGHT CHOP.
THURSDAY NIGHT
SOUTH WINDS 5 TO 10 KNOTS. LAKE WATERS LIGHT
CHOP.
FRIDAY
SOUTH WINDS 5 TO 10 KNOTS. LAKE WATERS LIGHT CHOP.
FRIDAY NIGHT
SOUTH WINDS 5 TO 10 KNOTS, DIMINISHING TO AROUND
5 KNOTS AFTER MIDNIGHT. LAKE WATERS LIGHT CHOP.
SATURDAY
SOUTHWEST WINDS AROUND 5 KNOTS, BECOMING SOUTH IN THE
AFTERNOON. LAKE WATERS LIGHT CHOP.
SATURDAY NIGHT
SOUTH WINDS 5 TO 10 KNOTS, BECOMING SOUTHWEST
AFTER MIDNIGHT. LAKE WATERS LIGHT CHOP.
SUNDAY
WEST WINDS AROUND 5 KNOTS, BECOMING SOUTH 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 SOUTH IN THE
AFTERNOON. LAKE WATERS LIGHT CHOP.
MONDAY NIGHT
SOUTHWEST WINDS 5 TO 10 KNOTS. LAKE WATERS LIGHT
CHOP.
GMZ432-130900-
CALCASIEU LAKE-
309 PM CDT WED AUG 12 2026
TONIGHT
SOUTH WINDS AROUND 10 KNOTS. LAKE WATERS LIGHT CHOP.
THURSDAY
SOUTH WINDS 5 TO 10 KNOTS. LAKE WATERS LIGHT CHOP.
THURSDAY NIGHT
SOUTH WINDS 5 TO 10 KNOTS. LAKE WATERS LIGHT
CHOP.
FRIDAY
SOUTH WINDS 5 TO 10 KNOTS. LAKE WATERS LIGHT CHOP.
FRIDAY NIGHT
SOUTH WINDS 5 TO 10 KNOTS, DIMINISHING TO AROUND
5 KNOTS AFTER MIDNIGHT. 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
NORTHWEST WINDS AROUND 5 KNOTS, BECOMING SOUTH 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.
GMZ435-130900-
VERMILION AND WEST COTE BLANCHE BAYS-
309 PM CDT WED AUG 12 2026
TONIGHT
SOUTHWEST WINDS 5 TO 10 KNOTS. BAY WATERS LIGHT CHOP.
THURSDAY
SOUTHWEST WINDS 5 TO 10 KNOTS. BAY WATERS LIGHT CHOP.
THURSDAY NIGHT
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, BECOMING SOUTHWEST
AFTER MIDNIGHT. BAY WATERS LIGHT CHOP.
SATURDAY
NORTHWEST 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. A SLIGHT CHANCE OF SHOWERS
AND THUNDERSTORMS IN THE AFTERNOON.
SUNDAY NIGHT
SOUTHWEST WINDS 5 TO 10 KNOTS. BAY WATERS LIGHT
CHOP.
MONDAY
WEST WINDS AROUND 5 KNOTS, BECOMING SOUTHWEST IN THE
AFTERNOON. BAY WATERS LIGHT CHOP.
MONDAY NIGHT
SOUTHWEST WINDS 5 TO 10 KNOTS. BAY WATERS LIGHT
CHOP.
WINDS AND WAVES HIGHER IN AND NEAR THUNDERSTORMS.
GMZ436-130900-
ATCHAFALAYA AND EAST COTE BLANCHE BAYS-
309 PM CDT WED AUG 12 2026
TONIGHT
SOUTHWEST WINDS 5 TO 10 KNOTS. BAY WATERS LIGHT CHOP.
THURSDAY
SOUTHWEST WINDS 5 TO 10 KNOTS. BAY WATERS LIGHT CHOP.
THURSDAY NIGHT
SOUTH WINDS 5 TO 10 KNOTS. BAY WATERS LIGHT
CHOP.
FRIDAY
SOUTH WINDS AROUND 5 KNOTS, INCREASING TO 5 TO 10 KNOTS
IN THE AFTERNOON. BAY WATERS LIGHT CHOP.
FRIDAY NIGHT
SOUTH WINDS 5 TO 10 KNOTS, BECOMING SOUTHWEST
AFTER MIDNIGHT. BAY WATERS LIGHT CHOP.
SATURDAY
NORTHWEST WINDS AROUND 5 KNOTS, BECOMING SOUTHWEST IN
THE AFTERNOON. BAY WATERS SMOOTH.
SATURDAY NIGHT
SOUTHWEST WINDS AROUND 5 KNOTS. BAY WATERS
SMOOTH.
SUNDAY
NORTHWEST WINDS AROUND 5 KNOTS, BECOMING SOUTHWEST IN
THE AFTERNOON. BAY WATERS SMOOTH. A CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON.
SUNDAY NIGHT
SOUTHWEST WINDS AROUND 5 KNOTS. BAY WATERS
SMOOTH.
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.
WINDS AND WAVES HIGHER IN AND NEAR THUNDERSTORMS.
GMZ450-130900-
COASTAL WATERS FROM CAMERON LA TO HIGH ISLAND TX OUT 20 NM-
309 PM CDT WED AUG 12 2026
TONIGHT
SOUTH WINDS 10 TO 15 KNOTS. SEAS 2 TO 3 FEET. WAVE
DETAIL: SOUTH 3 FEET AT 4 SECONDS.
THURSDAY
SOUTH WINDS 10 TO 15 KNOTS. SEAS 2 TO 3 FEET. WAVE
DETAIL: SOUTH 3 FEET AT 5 SECONDS.
THURSDAY NIGHT
SOUTH WINDS 10 TO 15 KNOTS WITH GUSTS UP TO
20 KNOTS. SEAS 2 TO 3 FEET. WAVE DETAIL: SOUTH 3 FEET AT
4 SECONDS.
FRIDAY
SOUTH WINDS 10 TO 15 KNOTS. SEAS AROUND 2 FEET. WAVE
DETAIL: SOUTH 2 FEET AT 5 SECONDS.
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.
SUNDAY
WEST WINDS AROUND 5 KNOTS, BECOMING SOUTH IN THE
AFTERNOON. SEAS AROUND 2 FEET IN THE MORNING, THEN 1 FOOT OR
LESS.
SUNDAY NIGHT
SOUTHWEST WINDS 5 TO 10 KNOTS. SEAS AROUND
2 FEET.
MONDAY
WEST WINDS 5 TO 10 KNOTS, BECOMING SOUTHWEST IN THE
AFTERNOON. SEAS 1 FOOT OR LESS.
MONDAY NIGHT
SOUTHWEST WINDS AROUND 10 KNOTS. SEAS AROUND
2 FEET.
GMZ452-130900-
COASTAL WATERS FROM INTRACOASTAL CITY TO CAMERON LA OUT 20 NM-
309 PM CDT WED AUG 12 2026
TONIGHT
SOUTHWEST WINDS 10 TO 15 KNOTS. SEAS 2 TO 3 FEET. WAVE
DETAIL: SOUTH 3 FEET AT 4 SECONDS.
THURSDAY
SOUTHWEST WINDS 10 TO 15 KNOTS. SEAS 2 TO 3 FEET.
WAVE DETAIL: SOUTHWEST 3 FEET AT 4 SECONDS.
THURSDAY NIGHT
SOUTH WINDS 10 TO 15 KNOTS WITH GUSTS UP TO
20 KNOTS. SEAS 2 TO 3 FEET. WAVE DETAIL: SOUTH 2 FEET AT
4 SECONDS.
FRIDAY
SOUTH WINDS 5 TO 10 KNOTS. SEAS AROUND 2 FEET. WAVE
DETAIL: SOUTH 2 FEET AT 5 SECONDS.
FRIDAY NIGHT
SOUTH WINDS 5 TO 10 KNOTS. 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.
SATURDAY NIGHT
SOUTHWEST WINDS 5 TO 10 KNOTS. SEAS AROUND
2 FEET.
SUNDAY
WEST WINDS AROUND 5 KNOTS, BECOMING SOUTHWEST IN THE
AFTERNOON. SEAS 1 FOOT OR LESS.
SUNDAY NIGHT
SOUTHWEST WINDS 5 TO 10 KNOTS. SEAS AROUND
2 FEET.
MONDAY
WEST WINDS 5 TO 10 KNOTS. SEAS 1 FOOT OR LESS.
MONDAY NIGHT
SOUTHWEST WINDS AROUND 10 KNOTS. SEAS AROUND
2 FEET.
GMZ455-130900-
COASTAL WATERS FROM LOWER ATCHAFALAYA RIVER TO INTRACOASTAL CITY
LA OUT 20 NM-
309 PM CDT WED AUG 12 2026
TONIGHT
SOUTHWEST WINDS 5 TO 10 KNOTS, INCREASING TO 10 TO
15 KNOTS LATE. SEAS 1 FOOT OR LESS, THEN AROUND 2 FEET AFTER
MIDNIGHT. WAVE DETAIL: SOUTHWEST 1 FOOT AT 2 SECONDS, BECOMING
SOUTH 2 FEET AT 3 SECONDS.
THURSDAY
SOUTHWEST WINDS 5 TO 10 KNOTS. SEAS AROUND 2 FEET IN
THE MORNING, THEN 1 FOOT OR LESS. WAVE DETAIL: SOUTHWEST 2 FEET
AT 4 SECONDS, BECOMING SOUTHWEST 1 FOOT AT 4 SECONDS.
THURSDAY NIGHT
SOUTH WINDS 5 TO 10 KNOTS. SEAS AROUND 2 FEET.
WAVE DETAIL: SOUTH 2 FEET 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 1 FOOT OR LESS.
SATURDAY
NORTHWEST WINDS AROUND 5 KNOTS, BECOMING SOUTH IN THE
AFTERNOON. SEAS 1 FOOT OR LESS. WAVE DETAIL: SOUTH 1 FOOT AT
4 SECONDS.
SATURDAY NIGHT
SOUTHWEST WINDS AROUND 5 KNOTS. SEAS 1 FOOT OR
LESS.
SUNDAY
WEST WINDS AROUND 5 KNOTS. SEAS 1 FOOT OR LESS. A
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE AFTERNOON.
SUNDAY NIGHT
SOUTHWEST WINDS AROUND 5 KNOTS. SEAS 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.
WINDS AND SEAS HIGHER IN AND NEAR THUNDERSTORMS.
GMZ470-130900-
COASTAL WATERS FROM CAMERON LA TO HIGH ISLAND TX FROM 20 TO 60 NM-
309 PM CDT WED AUG 12 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.
THURSDAY
SOUTH WINDS 10 TO 15 KNOTS. SEAS 2 TO 3 FEET. WAVE
DETAIL: SOUTH 3 FEET AT 5 SECONDS.
THURSDAY NIGHT
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
SOUTHEAST WINDS AROUND 10 KNOTS. SEAS 2 TO 3 FEET. WAVE
DETAIL: SOUTH 3 FEET AT 5 SECONDS.
FRIDAY NIGHT
SOUTH WINDS AROUND 10 KNOTS. SEAS 2 TO 3 FEET.
WAVE DETAIL: SOUTH 3 FEET AT 6 SECONDS.
SATURDAY
SOUTHEAST 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.
SUNDAY
SOUTHWEST WINDS AROUND 5 KNOTS, BECOMING SOUTHEAST IN
THE AFTERNOON. SEAS AROUND 2 FEET.
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.
GMZ472-130900-
COASTAL WATERS FROM INTRACOASTAL CITY TO CAMERON LA FROM 20 TO
60 NM-
309 PM CDT WED AUG 12 2026
TONIGHT
SOUTH WINDS 10 TO 15 KNOTS WITH GUSTS UP TO 20 KNOTS.
SEAS 2 TO 3 FEET. WAVE DETAIL: SOUTH 2 FEET AT 5 SECONDS.
THURSDAY
SOUTHWEST WINDS 10 TO 15 KNOTS WITH GUSTS UP TO
20 KNOTS, BECOMING SOUTH 5 TO 10 KNOTS IN THE AFTERNOON. SEAS
2 TO 3 FEET. WAVE DETAIL: SOUTH 2 FEET AT 5 SECONDS.
THURSDAY NIGHT
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 5 TO 10 KNOTS. SEAS 2 TO 3 FEET. WAVE
DETAIL: SOUTH 3 FEET AT 5 SECONDS.
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 5 TO 10 KNOTS. SEAS AROUND 2 FEET.
SUNDAY
NORTHWEST WINDS AROUND 5 KNOTS, BECOMING EAST IN THE
AFTERNOON. SEAS AROUND 2 FEET.
SUNDAY NIGHT
SOUTH WINDS 5 TO 10 KNOTS. SEAS AROUND 2 FEET.
MONDAY
WEST WINDS AROUND 5 KNOTS. SEAS 1 FOOT OR LESS.
MONDAY NIGHT
SOUTHWEST WINDS 5 TO 10 KNOTS. SEAS 1 FOOT OR
LESS.
GMZ475-130900-
COASTAL WATERS FROM LOWER ATCHAFALAYA RIVER TO INTRACOASTAL CITY
LA FROM 20 TO 60 NM-
309 PM CDT WED AUG 12 2026
TONIGHT
SOUTH WINDS 5 TO 10 KNOTS, INCREASING TO 10 TO
15 KNOTS AFTER MIDNIGHT. SEAS AROUND 2 FEET. WAVE DETAIL: SOUTH
2 FEET AT 5 SECONDS.
THURSDAY
SOUTH WINDS 5 TO 10 KNOTS. SEAS AROUND 2 FEET. WAVE
DETAIL: SOUTH 2 FEET AT 5 SECONDS.
THURSDAY NIGHT
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 5 TO 10 KNOTS. SEAS AROUND 2 FEET.
WAVE DETAIL: SOUTH 2 FEET AT 5 SECONDS.
SATURDAY
EAST 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.
SUNDAY
NORTHWEST WINDS AROUND 5 KNOTS, BECOMING EAST IN THE
AFTERNOON. SEAS AROUND 2 FEET IN THE MORNING, THEN 1 FOOT OR
LESS.
SUNDAY NIGHT
SOUTH WINDS AROUND 5 KNOTS. SEAS 1 FOOT OR LESS.
MONDAY
WEST WINDS AROUND 5 KNOTS. SEAS 1 FOOT OR LESS.
MONDAY NIGHT
SOUTHWEST WINDS AROUND 5 KNOTS. SEAS 1 FOOT OR
LESS.
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