Coastal Waters Forecast
Issued by NWS New Orleans/Baton Rouge, LA

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853
FZUS54 KLIX 121758
CWFLIX

Coastal Waters Forecast
National Weather Service New Orleans LA
1258 PM CDT Sat Jul 12 2025

Pascagoula to Atchafalaya River out to 60 NM

Seas are provided as a range of the average height of the highest
1/3 of the waves...along with the occasional height of the average
highest 10 percent of the waves.

GMZ500-GMZ501-130630-
1258 PM CDT Sat Jul 12 2025

.SYNOPSIS FOR PASCAGOULA TO ATCHAFALAYA RIVER OUT 60 NM...

Quiet marine conditions will continue through the next few days as
high pressure remains overhead or at least nearby. Winds generally
onshore at 10 knots or less with seas under 2 feet. The only
exception would be brief gale force wind gusts from isolated storms.
A broad area of low pressure moving into the northeaster Gulf middle
of next week my induce offshore flow in coastal waters east of the
Mouth of the Mississippi River.

$$

GMZ530-130630-
Lake Pontchartrain and Lake Maurepas-
1258 PM CDT Sat Jul 12 2025

.TODAY...Southwest winds around 5 knots, becoming southeast late
this morning, then becoming east early this afternoon, becoming
southeast around 5 knots late. Waves 1 foot or less. A chance of
showers and thunderstorms this afternoon.
.TONIGHT...South winds around 5 knots. Waves 1 foot or less. A
slight chance of showers and thunderstorms in the evening.
.SUNDAY...Southeast winds around 5 knots. Waves 1 foot or less. A
slight chance of showers and thunderstorms in the morning, then a
chance of showers and thunderstorms in the afternoon.
.SUNDAY NIGHT...Southwest winds around 5 knots. Waves 1 foot or
less. A chance of showers and thunderstorms in the evening.
.MONDAY...Northwest winds around 5 knots, becoming southwest in the
afternoon. Waves 1 foot or less. A slight chance of showers and
thunderstorms in the morning, then a chance of showers and
thunderstorms in the afternoon.
.MONDAY NIGHT...West winds around 5 knots. Waves 1 foot or less.
.TUESDAY...Northwest winds around 5 knots. Waves 1 foot or less. A
slight chance of showers and thunderstorms in the morning, then a
chance of showers and thunderstorms in the afternoon.
.TUESDAY NIGHT...Northwest winds around 5 knots. Waves 1 foot or
less. A slight chance of showers and thunderstorms after midnight.
.WEDNESDAY...North winds 5 to 10 knots, diminishing to around
5 knots in the afternoon. Waves 1 foot or less. A slight chance of
showers and thunderstorms in the morning, then a chance of showers
and thunderstorms in the afternoon.
.WEDNESDAY NIGHT...East winds around 5 knots, becoming west after
midnight. Waves 1 foot or less. A chance of showers. A chance of
thunderstorms, mainly in the evening.

Winds and waves higher in and near thunderstorms.

$$

GMZ534-130630-
Lake Borgne-
1258 PM CDT Sat Jul 12 2025

.TODAY...Southwest winds around 5 knots, becoming southeast around
5 knots this afternoon. Waves 1 foot or less. A slight chance of
showers and thunderstorms late this morning. A chance of showers and
thunderstorms this afternoon.
.TONIGHT...South winds 5 to 10 knots. Waves 1 foot or less.
.SUNDAY...South winds around 5 knots. Waves 1 foot or less. A slight
chance of showers and thunderstorms in the morning, then a chance of
showers and thunderstorms in the afternoon.
.SUNDAY NIGHT...Southwest winds 5 to 10 knots. Waves 1 foot or less.
A chance of showers and thunderstorms in the evening.
.MONDAY...Northwest winds around 5 knots, becoming southwest around
5 knots in the afternoon. Waves 1 foot or less. A chance of showers
and thunderstorms.
.MONDAY NIGHT...Southwest winds 5 to 10 knots, becoming west after
midnight. Waves 1 foot or less.
.TUESDAY...Northwest winds 5 to 10 knots, becoming west in the
afternoon. Waves 1 foot or less. A chance of showers and
thunderstorms.
.TUESDAY NIGHT...Northwest winds 5 to 10 knots. Waves 1 foot or
less. A slight chance of showers and thunderstorms in the evening,
then a chance of showers and thunderstorms after midnight.
.WEDNESDAY...North winds 5 to 10 knots, becoming east in the
afternoon. Waves 1 foot or less. A chance of showers and
thunderstorms in the morning, then showers and thunderstorms likely
in the afternoon.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Waves 1 foot or less. A
chance of thunderstorms. A chance of showers in the evening, then
showers likely after midnight.

Winds and waves higher in and near thunderstorms.

$$

GMZ532-130630-
Mississippi Sound-
1258 PM CDT Sat Jul 12 2025

.TODAY...West winds around 5 knots, becoming south this afternoon.
Waves 1 foot or less, then around 2 feet this afternoon. A slight
chance of showers and thunderstorms.
.TONIGHT...Southwest winds 5 to 10 knots. Waves around 2 feet in the
evening, then 1 foot or less.
.SUNDAY...Northwest winds around 5 knots, becoming south in the
afternoon. Waves 1 foot or less, then around 2 feet in the
afternoon. A slight chance of showers and thunderstorms in the
morning, then a chance of showers and thunderstorms in the
afternoon.
.SUNDAY NIGHT...Southwest winds 5 to 10 knots. Waves around 2 feet
in the evening, then 1 foot or less.
.MONDAY...Northwest winds 5 to 10 knots, becoming southwest in the
afternoon. Waves 1 foot or less, then 1 to 2 feet in the afternoon.
A chance of showers and thunderstorms.
.MONDAY NIGHT...Southwest winds around 10 knots, becoming northwest
after midnight. Waves around 2 feet. A slight chance of showers and
thunderstorms after midnight.
.TUESDAY...Northwest winds 5 to 10 knots, becoming west in the
afternoon. Waves 1 foot or less. A chance of showers and
thunderstorms.
.TUESDAY NIGHT...West winds 5 to 10 knots, becoming northwest after
midnight. Waves around 2 feet. A slight chance of showers and
thunderstorms in the evening, then a chance of showers and
thunderstorms after midnight.
.WEDNESDAY...North winds 5 to 10 knots, becoming southeast in the
afternoon. Waves 1 foot or less, then 1 to 2 feet in the afternoon.
A chance of showers and thunderstorms in the morning, then showers
and thunderstorms likely in the afternoon.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Waves around 2 feet in
the evening, then 1 foot or less. A chance of thunderstorms. A
chance of showers in the evening, then showers likely after
midnight.

Winds and waves higher in and near thunderstorms.

$$

GMZ536-538-130630-
Chandeleur Sound-Breton Sound-
1258 PM CDT Sat Jul 12 2025

.TODAY...Southwest winds 5 to 10 knots, diminishing to around
5 knots late this morning, then becoming southeast this afternoon.
Waves 1 foot or less. A slight chance of showers and thunderstorms
until late afternoon.
.TONIGHT...South winds 5 to 10 knots. Waves 1 foot or less.
.SUNDAY...South winds 5 to 10 knots. Waves 1 foot or less. A chance
of showers and thunderstorms.
.SUNDAY NIGHT...Southwest winds 5 to 10 knots. Waves 1 foot or less.
A slight chance of showers and thunderstorms.
.MONDAY...Northwest winds 5 to 10 knots, becoming southwest in the
afternoon. Waves 1 foot or less. A chance of showers and
thunderstorms.
.MONDAY NIGHT...Southwest winds 5 to 10 knots, becoming west after
midnight. Waves 1 foot or less, then around 2 feet after midnight. A
slight chance of showers and thunderstorms after midnight.
.TUESDAY...Northwest winds 5 to 10 knots. Waves 1 to 2 feet in the
morning, then 1 foot or less. A chance of showers and thunderstorms,
mainly in the morning.
.TUESDAY NIGHT...Northwest winds 5 to 10 knots. Waves 1 foot or
less. A slight chance of showers and thunderstorms in the evening,
then a chance of showers and thunderstorms after midnight.
.WEDNESDAY...North winds 5 to 10 knots, becoming east in the
afternoon. Waves 1 foot or less. Showers and thunderstorms likely.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Waves 1 foot or less. A
chance of thunderstorms. A chance of showers in the evening, then
showers after midnight.

Winds and waves higher in and near thunderstorms.

$$

GMZ555-557-130630-
Coastal Waters from Boothville LA to Southwest Pass of the
Mississippi River out 20 nm-
Coastal waters from Pascagoula Mississippi to Stake Island out 20 NM-
1258 PM CDT Sat Jul 12 2025

.TODAY...Southwest winds around 5 knots, becoming southeast this
afternoon. Seas 1 foot or less. Wave Detail: Southwest 1 foot at
3 seconds and southeast 1 foot at 6 seconds. A slight chance of
showers and thunderstorms until late afternoon.
.TONIGHT...South winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: South 1 foot at 2 seconds.
.SUNDAY...South winds around 5 knots. Seas 1 foot or less. Wave
Detail: South 1 foot at 5 seconds. A chance of showers and
thunderstorms.
.SUNDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: South 1 foot at 5 seconds. A slight chance of showers
and thunderstorms after midnight.
.MONDAY...West winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: West 1 foot at 2 seconds and southeast 1 foot at 5 seconds.
A chance of showers and thunderstorms, mainly in the morning.
.MONDAY NIGHT...West winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: West 1 foot at 2 seconds and south 1 foot at 5 seconds. A
chance of showers and thunderstorms after midnight.
.TUESDAY...Northwest winds 5 to 10 knots. Seas around 2 feet in the
morning, then 1 foot or less. Wave Detail: Northwest 1 foot at
3 seconds and south 1 foot at 5 seconds, becoming northwest 1 foot
at 3 seconds and southeast 1 foot at 5 seconds. A chance of showers
and thunderstorms, mainly in the morning.
.TUESDAY NIGHT...Northwest winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: West 1 foot at 3 seconds and south 1 foot at 6 seconds.
A slight chance of showers and thunderstorms in the evening, then
showers likely with a chance of thunderstorms after midnight.
.WEDNESDAY...North winds 5 to 10 knots, becoming east in the
afternoon. Seas around 2 feet. Wave Detail: East 2 feet at 6 seconds
and northwest 1 foot at 3 seconds. Thunderstorms likely. Showers.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: Southeast 1 foot at 4 seconds. A chance of
thunderstorms. A chance of showers in the evening, then showers
after midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ550-552-130630-
Coastal Waters from Port Fourchon LA to Lower Atchafalaya River LA
out 20 nm-
Coastal waters from the Southwest Pass of the Mississippi River to
Port Fourchon Louisiana out 20 NM-
1258 PM CDT Sat Jul 12 2025

.TODAY...South winds 5 to 10 knots, becoming southeast this
afternoon. Seas 1 foot or less. Wave Detail: South 1 foot at
4 seconds. A slight chance of showers and thunderstorms.
.TONIGHT...South winds 5 to 10 knots. Seas 1 to 2 feet. Wave Detail:
South 2 feet at 4 seconds. A slight chance of showers and
thunderstorms.
.SUNDAY...South winds around 5 knots. Seas 1 to 2 feet in the
morning, then 1 foot or less. Wave Detail: South 1 foot at
4 seconds. Thunderstorms likely with a chance of showers.
.SUNDAY NIGHT...South winds around 5 knots. Seas 1 to 2 feet in the
evening, then 1 foot or less. Wave Detail: Southeast 1 foot at
5 seconds, becoming south 1 foot at 4 seconds. A chance of showers
and thunderstorms after midnight.
.MONDAY...Southwest winds around 5 knots. Seas 1 foot or less. Wave
Detail: South 1 foot at 5 seconds. A chance of thunderstorms.
Showers likely, mainly in the morning.
.MONDAY NIGHT...West winds around 5 knots. Seas 1 foot or less. Wave
Detail: South 1 foot at 5 seconds. A slight chance of showers and
thunderstorms after midnight.
.TUESDAY...Northwest winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: West 1 foot at 4 seconds and south 1 foot at 5 seconds. A
chance of showers and thunderstorms, mainly in the morning.
.TUESDAY NIGHT...Northwest winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: Southwest 1 foot at 5 seconds. A chance of showers and
thunderstorms after midnight.
.WEDNESDAY...North winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: Northwest 1 foot at 3 seconds. A chance of thunderstorms.
Showers likely, mainly in the morning.
.WEDNESDAY NIGHT...Northeast winds around 5 knots. Seas 1 foot or
less. Wave Detail: Southwest 1 foot at 5 seconds. A chance of
thunderstorms. A chance of showers in the evening, then showers
likely after midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ575-577-130630-
Coastal Waters from Stake Island LA to Southwest Pass of the
Mississippi River from 20 to 60 nm-
Coastal waters from Pascagoula Mississippi to Stake Island Louisiana
out 20 to 60 NM-
1258 PM CDT Sat Jul 12 2025

.TODAY...South winds around 5 knots, becoming east this afternoon.
Seas 1 foot or less. Wave Detail: South 1 foot at 3 seconds and
southeast 1 foot at 6 seconds. A slight chance of showers and
thunderstorms.
.TONIGHT...South winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: Southeast 1 foot at 5 seconds.
.SUNDAY...South winds around 5 knots. Seas 1 foot or less. Wave
Detail: South 1 foot at 5 seconds. A chance of showers and
thunderstorms.
.SUNDAY NIGHT...Southwest winds around 5 knots. Seas 1 foot or less.
Wave Detail: South 1 foot at 4 seconds. A slight chance of showers
and thunderstorms after midnight.
.MONDAY...Northwest winds around 5 knots. Seas 1 foot or less. Wave
Detail: West 1 foot at 4 seconds and southeast 1 foot at 5 seconds.
A chance of showers and thunderstorms, mainly in the morning.
.MONDAY NIGHT...West winds 5 to 10 knots. Seas 1 foot or less, then
around 2 feet after midnight. Wave Detail: West 1 foot at 3 seconds
and south 1 foot at 5 seconds, becoming west 1 foot at 3 seconds and
south 1 foot at 6 seconds. A chance of showers and thunderstorms
after midnight.
.TUESDAY...Northwest winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Northwest 1 foot at 3 seconds and south 1 foot at 7 seconds.
Showers likely with a chance of thunderstorms in the morning, then a
chance of showers with a slight chance of thunderstorms in the
afternoon.
.TUESDAY NIGHT...Northwest winds 5 to 10 knots. Seas 1 foot or less,
then around 2 feet after midnight. Wave Detail: Northwest 1 foot at
4 seconds and southeast 1 foot at 7 seconds, becoming east 2 feet at
7 seconds and northwest 1 foot at 4 seconds. A slight chance of
showers and thunderstorms in the evening, then showers likely with a
chance of thunderstorms after midnight.
.WEDNESDAY...North winds around 10 knots, becoming northeast in the
afternoon. Seas 2 to 3 feet. Wave Detail: North 2 feet at 5 seconds.
Showers with thunderstorms likely in the morning, then showers
likely with a chance of thunderstorms in the afternoon.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: Southwest 1 foot at 4 seconds and east 1 foot at
5 seconds. A chance of thunderstorms. A chance of showers in the
evening, then showers after midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ570-572-130630-
Coastal waters from Port Fourchon Louisiana to Lower Atchafalaya
River LA from 20 to 60 NM-
Coastal waters from Southwest Pass of the Mississippi River to Port
Fourchon Louisiana from 20 to 60 NM-
1258 PM CDT Sat Jul 12 2025

.TODAY...South winds 5 to 10 knots, becoming southeast this
afternoon. Seas around 2 feet. Wave Detail: South 2 feet at
4 seconds. A slight chance of showers and thunderstorms this
morning. A chance of showers and thunderstorms early this afternoon.
A slight chance of showers and thunderstorms late.
.TONIGHT...Southeast 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...South winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southeast 2 feet at 5 seconds. Thunderstorms likely with a
chance of showers.
.SUNDAY NIGHT...South winds around 5 knots. Seas around 2 feet. Wave
Detail: Southeast 2 feet at 5 seconds. A chance of showers with a
slight chance of thunderstorms after midnight.
.MONDAY...Southwest winds around 5 knots. Seas around 2 feet. Wave
Detail: South 2 feet at 5 seconds. A chance of thunderstorms.
Showers likely, mainly in the morning.
.MONDAY NIGHT...West winds around 5 knots. Seas around 2 feet. Wave
Detail: South 1 foot at 5 seconds. A slight chance of showers and
thunderstorms after midnight.
.TUESDAY...Northwest winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southwest 1 foot at 6 seconds. A chance of showers and
thunderstorms, mainly in the morning.
.TUESDAY NIGHT...Northwest winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: West 1 foot at 4 seconds and south 1 foot at 6 seconds.
A chance of showers and thunderstorms after midnight.
.WEDNESDAY...North winds 5 to 10 knots. Seas 1 foot or less, then
around 2 feet in the afternoon. Wave Detail: Northwest 1 foot at
4 seconds and south 1 foot at 5 seconds, becoming northwest 1 foot
at 4 seconds and east 1 foot at 6 seconds. A chance of
thunderstorms. Showers likely.
.WEDNESDAY NIGHT...Northeast winds around 5 knots. Seas around
2 feet in the evening, then 1 foot or less. Wave Detail: West 1 foot
at 4 seconds and east 1 foot at 6 seconds, becoming southwest 1 foot
at 4 seconds and east 1 foot at 5 seconds. A chance of
thunderstorms. A chance of showers in the evening, then showers
likely after midnight.

Winds and seas higher in and near thunderstorms.

$$