National Weather Service Marine Forecast FZUS54 KLCH
FZUS54 KLCH 100809
CWFLCH
Coastal Waters Forecast
National Weather Service Lake Charles LA
309 AM CDT Fri Jul 10 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.
GMZ400-102100
309 AM CDT Fri Jul 10 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 remain stretched from the Atlantic into the northern Gulf through the week. This will keep a light south to southwest flow and low seas in place. Isolated to widely scattered shower and storms will be possible each day, with coverage increasing a bit by the late weekend into early next week as another weakness develops aloft.
GMZ430-102100
Sabine Lake
309 AM CDT Fri Jul 10 2026
TODAY
South winds 5 to 10 knots. Lake waters light chop. A
chance of showers with a slight chance of thunderstorms early
this morning, then a chance of showers and thunderstorms late
this morning and early afternoon.
TONIGHT
South winds 5 to 10 knots. Lake waters light chop. A
slight chance of showers and thunderstorms after midnight.
SATURDAY
South winds around 5 knots, increasing to 5 to
10 knots in the afternoon. Lake waters light chop. A chance of
showers and thunderstorms.
SATURDAY NIGHT
South winds 5 to 10 knots, diminishing to
around 5 knots after midnight. Lake waters light chop. A slight
chance of showers and thunderstorms after midnight.
SUNDAY
South winds around 5 knots. Lake waters smooth.
Showers. A chance of thunderstorms in the morning, then
thunderstorms likely in the afternoon.
SUNDAY NIGHT
South winds 5 to 10 knots. Lake waters light
chop. Showers and thunderstorms likely after midnight.
MONDAY
Southwest winds around 5 knots. Lake waters smooth.
Showers. A chance of thunderstorms in the morning, then
thunderstorms likely in the afternoon.
MONDAY NIGHT
South winds around 5 knots. Lake waters smooth. A
chance of thunderstorms. A chance of showers in the evening, then
showers likely after midnight.
TUESDAY
Northeast winds around 5 knots, becoming southwest in
the afternoon. Lake waters smooth. Thunderstorms likely. Showers
likely.
TUESDAY NIGHT
South winds around 5 knots. Lake waters smooth.
A slight chance of showers and thunderstorms in the evening, then
a chance of showers and thunderstorms after midnight.
Winds and waves higher in and near thunderstorms.
GMZ432-102100
Calcasieu Lake
309 AM CDT Fri Jul 10 2026
TODAY
South winds 5 to 10 knots. Lake waters light chop.
Showers likely this morning. A chance of thunderstorms. A chance
of showers this afternoon.
TONIGHT
South winds 5 to 10 knots. Lake waters light chop. A
slight chance of showers and thunderstorms after midnight.
SATURDAY
Southeast winds around 5 knots, becoming south in the
afternoon. Lake waters light chop. A chance of showers and
thunderstorms.
SATURDAY NIGHT
South winds 5 to 10 knots. Lake waters light
chop. A chance of showers and thunderstorms after midnight.
SUNDAY
Southwest winds around 5 knots, becoming south in the
afternoon. Lake waters light chop. Showers with a chance of
thunderstorms in the morning, then showers and thunderstorms
likely in the afternoon.
SUNDAY NIGHT
South winds 5 to 10 knots. Lake waters light
chop. Showers and thunderstorms likely after midnight.
MONDAY
Southwest winds 5 to 10 knots. Lake waters light chop.
Showers with a chance of thunderstorms in the morning, then
showers and thunderstorms likely in the afternoon.
MONDAY NIGHT
Southwest winds 5 to 10 knots. Lake waters light
chop. A chance of thunderstorms. A chance of showers in the
evening, then showers likely after midnight.
TUESDAY
North winds around 5 knots, becoming southwest in the
afternoon. Lake waters light chop. Showers with a chance of
thunderstorms in the morning, then showers and thunderstorms
likely in the afternoon.
TUESDAY NIGHT
Southwest winds 5 to 10 knots. Lake waters light
chop. A chance of showers. A slight chance of thunderstorms in
the evening, then a chance of thunderstorms after midnight.
Winds and waves higher in and near thunderstorms.
GMZ435-102100
Vermilion and West Cote Blanche Bays
309 AM CDT Fri Jul 10 2026
TODAY
South winds 5 to 10 knots. Bay waters light chop. A
chance of showers and thunderstorms until late afternoon, then a
slight chance of showers and thunderstorms late.
TONIGHT
Southeast winds 5 to 10 knots. Bay waters light chop.
A slight chance of showers and thunderstorms after midnight.
SATURDAY
Southeast winds 5 to 10 knots. Bay waters light chop.
A chance of showers and thunderstorms.
SATURDAY NIGHT
South winds around 5 knots. Bay waters smooth.
A chance of showers and thunderstorms.
SUNDAY
Southwest winds around 5 knots. Bay waters smooth.
Showers likely with a chance of thunderstorms in the morning,
then showers and thunderstorms likely in the afternoon.
SUNDAY NIGHT
Southwest winds 5 to 10 knots. Bay waters light
chop. A slight chance of showers and thunderstorms in the
evening, then showers and thunderstorms likely after midnight.
MONDAY
Southwest winds 5 to 10 knots. Bay waters light chop.
Thunderstorms likely. Showers.
MONDAY NIGHT
Southwest winds around 5 knots. Bay waters
smooth. A chance of thunderstorms. A chance of showers in the
evening, then showers likely after midnight.
TUESDAY
Northwest winds around 5 knots, becoming southwest in
the afternoon. Bay waters light chop. Showers with a chance of
thunderstorms in the morning, then showers and thunderstorms
likely in the afternoon.
TUESDAY NIGHT
Southwest winds 5 to 10 knots. Bay waters light
chop. A chance of showers. A slight chance of thunderstorms in
the evening, then a chance of thunderstorms after midnight.
Winds and waves higher in and near thunderstorms.
GMZ436-102100
Atchafalaya and East Cote Blanche Bays
309 AM CDT Fri Jul 10 2026
TODAY
South winds 5 to 10 knots. Bay waters light chop. A
chance of showers and thunderstorms until late afternoon, then a
slight chance of showers and thunderstorms late.
TONIGHT
Southeast winds 5 to 10 knots. Bay waters light chop.
A slight chance of showers and thunderstorms after midnight.
SATURDAY
Southeast winds around 5 knots. Bay waters smooth. A
chance of showers and thunderstorms.
SATURDAY NIGHT
South winds around 5 knots. Bay waters smooth.
A chance of showers and thunderstorms.
SUNDAY
Southwest winds around 5 knots. Bay waters smooth.
Showers with a chance of thunderstorms in the morning, then
showers and thunderstorms likely in the afternoon.
SUNDAY NIGHT
Southwest winds 5 to 10 knots. Bay waters light
chop. A slight chance of showers and thunderstorms in the
evening, then showers and thunderstorms likely after midnight.
MONDAY
West winds 5 to 10 knots. Bay waters light chop.
Thunderstorms likely. Showers.
MONDAY NIGHT
Southwest winds 5 to 10 knots. Bay waters light
chop. A chance of thunderstorms. A chance of showers in the
evening, then showers likely after midnight.
TUESDAY
Northwest winds around 5 knots, becoming southwest in
the afternoon. Bay waters light chop. Showers likely with a
chance of thunderstorms in the morning, then showers and
thunderstorms likely in the afternoon.
TUESDAY NIGHT
Southwest winds 5 to 10 knots. Bay waters light
chop. A chance of showers and thunderstorms.
Winds and waves higher in and near thunderstorms.
GMZ450-102100
Coastal waters from Cameron LA to High Island TX out 20 NM
309 AM CDT Fri Jul 10 2026
TODAY
South winds around 10 knots. Seas around 2 feet. Wave
Detail: South 2 feet at 4 seconds. A chance of showers and
thunderstorms until late afternoon, then a slight chance of
showers and thunderstorms late.
TONIGHT
Southeast winds 10 to 15 knots. Seas around 2 feet.
Wave Detail: Southeast 2 feet at 4 seconds. A chance of showers
with a slight chance of thunderstorms after midnight.
SATURDAY
South winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: South 2 feet at 5 seconds. A chance of showers and
thunderstorms in the morning.
SATURDAY NIGHT
South winds around 10 knots. Seas around
2 feet. Wave Detail: Southeast 2 feet at 5 seconds. A chance of
showers and thunderstorms after midnight.
SUNDAY
South winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: South 2 feet at 5 seconds. A chance of thunderstorms.
Showers likely, mainly in the morning.
SUNDAY NIGHT
South winds around 10 knots. Seas around 2 feet.
Wave Detail: South 2 feet at 4 seconds. A slight chance of
showers and thunderstorms in the evening, then showers and
thunderstorms likely after midnight.
MONDAY
Southwest winds 5 to 10 knots. Seas around 2 feet.
Showers with thunderstorms likely in the morning, then a chance
of showers and thunderstorms in the afternoon.
MONDAY NIGHT
South winds around 10 knots. Seas around 2 feet.
A chance of thunderstorms. A chance of showers in the evening,
then showers likely after midnight.
TUESDAY
South winds 5 to 10 knots. Seas around 2 feet. Showers
and thunderstorms likely, mainly in the morning.
TUESDAY NIGHT
South winds around 10 knots. Seas around 2 feet.
A chance of showers. A slight chance of thunderstorms in the
evening, then a chance of thunderstorms after midnight.
Winds and seas higher in and near thunderstorms.
GMZ452-102100
Coastal waters from Intracoastal City to Cameron LA out 20 NM
309 AM CDT Fri Jul 10 2026
TODAY
South winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: South 2 feet at 4 seconds. A chance of showers and
thunderstorms until late afternoon, then a slight chance of
showers and thunderstorms late.
TONIGHT
South winds around 10 knots. Seas around 2 feet. Wave
Detail: South 2 feet at 4 seconds. A slight chance of showers and
thunderstorms after midnight.
SATURDAY
South winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: South 2 feet at 5 seconds. A chance of showers and
thunderstorms, mainly in the morning.
SATURDAY NIGHT
South winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: Southeast 2 feet at 5 seconds. A slight chance of
showers and thunderstorms in the evening, then a chance of
showers and thunderstorms after midnight.
SUNDAY
Southwest winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: South 2 feet at 5 seconds. A chance of thunderstorms.
Showers likely, mainly in the morning.
SUNDAY NIGHT
South winds around 10 knots. Seas around 2 feet.
Wave Detail: South 2 feet at 5 seconds. A slight chance of
showers and thunderstorms in the evening, then showers and
thunderstorms likely after midnight.
MONDAY
Southwest winds 5 to 10 knots. Seas around 2 feet.
Thunderstorms likely. Showers.
MONDAY NIGHT
Southwest winds around 10 knots. Seas around
2 feet. A chance of thunderstorms. A chance of showers in the
evening, then showers likely after midnight.
TUESDAY
Southeast winds 5 to 10 knots, becoming southwest in
the afternoon. Seas around 2 feet. Showers and thunderstorms
likely, mainly in the morning.
TUESDAY NIGHT
South winds around 10 knots. Seas around 2 feet.
A chance of showers. A slight chance of thunderstorms in the
evening, then a chance of thunderstorms after midnight.
Winds and seas higher in and near thunderstorms.
GMZ455-102100
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA out 20 NM
309 AM CDT Fri Jul 10 2026
TODAY
Southeast winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: South 1 foot at 4 seconds. A chance of showers and
thunderstorms until late afternoon, then a slight chance of
showers and thunderstorms late.
TONIGHT
Southeast winds 5 to 10 knots. Seas 1 to 2 feet. Wave
Detail: South 2 feet at 3 seconds. A chance of showers and
thunderstorms after midnight.
SATURDAY
Southeast winds 5 to 10 knots. Seas around 2 feet in
the morning, then 1 foot or less. Wave Detail: South 1 foot at
4 seconds. A chance of showers and thunderstorms.
SATURDAY NIGHT
South winds 5 to 10 knots. Seas 1 foot or less,
then around 2 feet after midnight. Wave Detail: South 1 foot at
3 seconds. A chance of showers and thunderstorms.
SUNDAY
Southwest winds 5 to 10 knots. Seas around 2 feet in
the morning, then 1 foot or less. Wave Detail: South 1 foot at
4 seconds. A chance of thunderstorms. Showers likely, mainly in
the morning.
SUNDAY NIGHT
Southwest winds 5 to 10 knots. Seas 1 foot or
less, then around 2 feet after midnight. Wave Detail: South
1 foot at 4 seconds, becoming south 1 foot at 3 seconds. A slight
chance of showers and thunderstorms in the evening, then showers
and thunderstorms likely after midnight.
MONDAY
West winds 5 to 10 knots. Seas around 2 feet.
Thunderstorms likely. Showers.
MONDAY NIGHT
Southwest winds 5 to 10 knots. Seas 1 foot or
less, then around 2 feet after midnight. A chance of
thunderstorms. A chance of showers in the evening, then showers
likely after midnight.
TUESDAY
West winds 5 to 10 knots, becoming southwest in the
afternoon. Seas around 2 feet in the morning, then 1 foot or
less. Showers with thunderstorms likely in the morning, then a
chance of showers and thunderstorms in the afternoon.
TUESDAY NIGHT
Southwest winds 5 to 10 knots. Seas 1 foot or
less, then around 2 feet after midnight. A chance of showers. A
slight chance of thunderstorms in the evening, then a chance of
thunderstorms after midnight.
Winds and seas higher in and near thunderstorms.
GMZ470-102100
Coastal waters from Cameron LA to High Island TX from 20 to 60 NM
309 AM CDT Fri Jul 10 2026
TODAY
South winds around 10 knots. Seas around 2 feet. Wave
Detail: South 2 feet at 4 seconds. A chance of showers and
thunderstorms, mainly this morning.
TONIGHT
Southeast winds around 10 knots. Seas 2 to 3 feet.
Wave Detail: Southeast 3 feet at 5 seconds. A slight chance of
showers. A slight chance of thunderstorms after midnight.
SATURDAY
Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 3 feet at 6 seconds. A chance of showers and
thunderstorms, mainly in the morning.
SATURDAY NIGHT
South winds 5 to 10 knots. Seas 2 to 3 feet.
Wave Detail: Southeast 2 feet at 6 seconds. A chance of showers
and thunderstorms after midnight.
SUNDAY
South winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: South 2 feet at 6 seconds. A chance of thunderstorms.
Showers likely, mainly in the morning.
SUNDAY NIGHT
South winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 2 feet at 6 seconds. A slight chance of showers
and thunderstorms in the evening, then showers likely with a
chance of thunderstorms after midnight.
MONDAY
Southwest winds 5 to 10 knots. Seas 2 to 3 feet.
Showers and thunderstorms likely, mainly in the morning.
MONDAY NIGHT
South winds 5 to 10 knots. Seas around 2 feet. A
slight chance of showers and thunderstorms in the evening, then a
chance of showers and thunderstorms after midnight.
TUESDAY
Southeast winds 5 to 10 knots. Seas around 2 feet.
Showers and thunderstorms likely, mainly in the morning.
TUESDAY NIGHT
Southeast winds 5 to 10 knots. Seas around
2 feet. A slight chance of showers in the evening, then a chance
of showers and thunderstorms after midnight.
Winds and seas higher in and near thunderstorms.
GMZ472-102100
Coastal waters from Intracoastal City to Cameron LA from 20 to
60 NM
309 AM CDT Fri Jul 10 2026
TODAY
Southeast winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: South 2 feet at 4 seconds. A chance of showers and
thunderstorms.
TONIGHT
Southeast winds around 10 knots. Seas 2 to 3 feet.
Wave Detail: Southeast 3 feet at 6 seconds. A slight chance of
showers and thunderstorms after midnight.
SATURDAY
Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 3 feet at 6 seconds. A chance of showers and
thunderstorms, mainly in the morning.
SATURDAY NIGHT
South winds 5 to 10 knots. Seas 2 to 3 feet.
Wave Detail: Southeast 3 feet at 6 seconds. A slight chance of
showers and thunderstorms.
SUNDAY
South winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: South 3 feet at 6 seconds. A chance of thunderstorms.
Showers likely, mainly in the morning.
SUNDAY NIGHT
South winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 2 feet at 6 seconds. A slight chance of showers
and thunderstorms in the evening, then showers likely with a
chance of thunderstorms after midnight.
MONDAY
Southwest winds 5 to 10 knots. Seas 2 to 3 feet.
Thunderstorms likely. Showers.
MONDAY NIGHT
South winds 5 to 10 knots. Seas around 2 feet. A
slight chance of showers and thunderstorms in the evening, then
showers likely with a chance of thunderstorms after midnight.
TUESDAY
South winds 5 to 10 knots. Seas around 2 feet. Showers
and thunderstorms likely, mainly in the morning.
TUESDAY NIGHT
South winds 5 to 10 knots. Seas around 2 feet. A
slight chance of showers in the evening, then a chance of showers
and thunderstorms after midnight.
Winds and seas higher in and near thunderstorms.
GMZ475-102100
Coastal waters from Lower Atchafalaya River to Intracoastal City
LA from 20 to 60 NM
309 AM CDT Fri Jul 10 2026
TODAY
Southeast winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: South 2 feet at 4 seconds. A chance of showers and
thunderstorms until late afternoon, then a slight chance of
showers and thunderstorms late.
TONIGHT
Southeast winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 3 feet at 6 seconds. A chance of showers and
thunderstorms after midnight.
SATURDAY
Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 3 feet at 6 seconds. A chance of showers and
thunderstorms, mainly in the morning.
SATURDAY NIGHT
South winds 5 to 10 knots. Seas 2 to 3 feet.
Wave Detail: Southeast 3 feet at 7 seconds. A slight chance of
showers and thunderstorms in the evening, then a chance of
showers and thunderstorms after midnight.
SUNDAY
South winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 3 feet at 6 seconds. Showers likely with a
chance of thunderstorms.
SUNDAY NIGHT
South winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: South 2 feet at 6 seconds. A slight chance of showers and
thunderstorms in the evening, then showers and thunderstorms
likely after midnight.
MONDAY
Southwest winds 5 to 10 knots. Seas 2 to 3 feet.
Thunderstorms likely. Showers.
MONDAY NIGHT
South winds 5 to 10 knots. Seas around 2 feet. A
slight chance of showers and thunderstorms in the evening, then a
chance of showers and thunderstorms after midnight.
TUESDAY
South winds 5 to 10 knots. Seas around 2 feet. Showers
and thunderstorms likely, mainly in the morning.
TUESDAY NIGHT
South winds around 10 knots. Seas around 2 feet.
A slight chance of showers and thunderstorms in the evening, then
a chance of showers and thunderstorms after midnight.
Winds and seas higher in and near thunderstorms.
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