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

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346
FZUS54 KLIX 191742
CWFLIX

Coastal Waters Forecast
National Weather Service New Orleans LA
1242 PM CDT Sat Jul 19 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-GMZ501-200615-
1242 PM CDT Sat Jul 19 2025

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

Winds are expected to remain light through the period as high
pressure gradually builds in. Additionally convection coverage is
expected to continue decreasing, with isolated to scattered this
afternoon, and isolated at best beyond that. Moisture returns to the
area around mid week, bringing thunderstorm coverage back up.

$$

GMZ530-200615-
Lake Pontchartrain and Lake Maurepas-
1242 PM CDT Sat Jul 19 2025

.THIS AFTERNOON...South winds around 5 knots. Waves 1 foot or less.
A chance of showers and thunderstorms.
.TONIGHT...Southwest winds around 5 knots. Waves 1 foot or less. A
slight chance of showers and thunderstorms in the evening.
.SUNDAY...Southwest winds around 5 knots, becoming south in the
afternoon. Waves 1 foot or less. A slight chance of showers and
thunderstorms in the afternoon.
.SUNDAY NIGHT...Southwest winds 5 to 10 knots. Waves 1 foot or less.
.MONDAY...West winds around 5 knots. Waves 1 foot or less. A slight
chance of showers and thunderstorms in the afternoon.
.MONDAY NIGHT...Southwest winds 5 to 10 knots. Waves 1 foot or less.
.TUESDAY...West winds around 5 knots. Waves 1 foot or less. A slight
chance of showers and thunderstorms.
.TUESDAY NIGHT...Southwest winds around 5 knots, becoming west after
midnight. Waves 1 foot or less. A slight chance of showers and
thunderstorms after midnight.
.WEDNESDAY...Northwest winds 5 to 10 knots, becoming northeast in
the afternoon. Waves 1 foot or less. A chance of thunderstorms. A
chance of showers.
.WEDNESDAY NIGHT...Northeast winds around 5 knots. Waves 1 foot or
less. A chance of showers and thunderstorms, mainly in the evening.

Winds and waves higher in and near thunderstorms.

$$

GMZ534-200615-
Lake Borgne-
1242 PM CDT Sat Jul 19 2025

.THIS AFTERNOON...South winds 5 to 10 knots. Waves 1 foot or less. A
chance of showers and thunderstorms.
.TONIGHT...Southwest winds 5 to 10 knots. Waves 1 foot or less.
.SUNDAY...West winds around 5 knots, becoming south in the
afternoon. Waves 1 foot or less. A slight chance of showers and
thunderstorms in the afternoon.
.SUNDAY NIGHT...Southwest winds 5 to 10 knots. Waves 1 foot or less.
.MONDAY...West winds 5 to 10 knots. Waves 1 foot or less. A slight
chance of showers and thunderstorms.
.MONDAY NIGHT...Southwest winds 5 to 10 knots. Waves around 2 feet.
.TUESDAY...West winds 5 to 10 knots. Waves around 2 feet in the
morning, then 1 foot or less. A chance of showers and thunderstorms.
.TUESDAY NIGHT...Southwest winds 5 to 10 knots, becoming west after
midnight. Waves 1 foot or less, then around 2 feet after midnight. A
chance of showers and thunderstorms after midnight.
.WEDNESDAY...Northwest winds 5 to 10 knots, becoming northeast in
the afternoon. Waves around 2 feet in the morning, then 1 foot or
less. A chance of showers and thunderstorms in the morning, then
showers and thunderstorms likely in the afternoon.
.WEDNESDAY NIGHT...Northeast winds 5 to 10 knots. Waves 1 foot or
less. A chance of thunderstorms. Showers likely.

Winds and waves higher in and near thunderstorms.

$$

GMZ532-200615-
Mississippi Sound-
1242 PM CDT Sat Jul 19 2025

.THIS AFTERNOON...South winds 5 to 10 knots. Waves around 2 feet. A
slight chance of showers and thunderstorms.
.TONIGHT...Southwest winds 5 to 10 knots. Waves around 2 feet.
.SUNDAY...West winds around 5 knots, becoming south in the
afternoon. Waves 1 foot or less, then around 2 feet in the
afternoon.
.SUNDAY NIGHT...Southwest winds around 10 knots. Waves around
2 feet.
.MONDAY...West winds 5 to 10 knots, becoming southwest in the
afternoon. Waves 1 to 2 feet. A slight chance of showers and
thunderstorms.
.MONDAY NIGHT...Southwest winds around 10 knots. Waves around
2 feet. A slight chance of showers and thunderstorms after midnight.
.TUESDAY...West winds 5 to 10 knots. Waves 1 to 2 feet. A chance of
showers and thunderstorms, mainly in the morning.
.TUESDAY NIGHT...West winds 5 to 10 knots. 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 east in the
afternoon. Waves 1 to 2 feet in the morning, then 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. Showers likely.

Winds and waves higher in and near thunderstorms.

$$

GMZ536-538-200615-
Chandeleur Sound-Breton Sound-
1242 PM CDT Sat Jul 19 2025

.THIS AFTERNOON...South winds 5 to 10 knots. Waves around 2 feet. A
chance of showers and thunderstorms early, then a slight chance of
showers and thunderstorms late.
.TONIGHT...Southwest winds 5 to 10 knots. Waves around 2 feet in the
evening, then 1 foot or less.
.SUNDAY...West winds around 5 knots, becoming south in the
afternoon. Waves 1 foot or less, then 1 to 2 feet in the afternoon.
.SUNDAY NIGHT...Southwest winds 5 to 10 knots. Waves around 2 feet.
.MONDAY...West winds 5 to 10 knots, becoming southwest in the
afternoon. Waves 1 foot or less. A slight chance of showers and
thunderstorms in the morning.
.MONDAY NIGHT...Southwest winds 5 to 10 knots. Waves around 2 feet.
A slight chance of showers and thunderstorms after midnight.
.TUESDAY...West winds 5 to 10 knots. Waves around 2 feet in the
morning, then 1 foot or less. A chance of showers and thunderstorms,
mainly in the morning.
.TUESDAY NIGHT...West winds 5 to 10 knots. Waves 1 foot or less,
then around 2 feet after midnight. A slight chance of showers and
thunderstorms in the evening, then a chance of showers and
thunderstorms after midnight.
.WEDNESDAY...Northwest winds around 10 knots, becoming northeast in
the afternoon. Waves around 2 feet in the morning, then 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. Showers.

Winds and waves higher in and near thunderstorms.

$$

GMZ555-557-200615-
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-
1242 PM CDT Sat Jul 19 2025

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

Winds and seas higher in and near thunderstorms.

$$

GMZ550-552-200615-
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-
1242 PM CDT Sat Jul 19 2025

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

Winds and seas higher in and near thunderstorms.

$$

GMZ575-577-200615-
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-
1242 PM CDT Sat Jul 19 2025

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

Winds and seas higher in and near thunderstorms.

$$

GMZ570-572-200615-
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-
1242 PM CDT Sat Jul 19 2025

.THIS AFTERNOON...Southeast winds around 5 knots. Seas 1 foot or
less. Wave Detail: South 1 foot at 5 seconds. A slight chance of
showers and thunderstorms.
.TONIGHT...South winds 5 to 10 knots. Seas 1 foot or less, then
around 2 feet after midnight. Wave Detail: South 1 foot at
5 seconds, becoming south 2 feet at 5 seconds. A slight chance of
showers and thunderstorms after midnight.
.SUNDAY...Southeast winds around 5 knots. Seas around 2 feet. Wave
Detail: Southeast 2 feet at 6 seconds. A slight chance of showers
and thunderstorms.
.SUNDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southeast 2 feet at 6 seconds. A slight chance of showers
and thunderstorms after midnight.
.MONDAY...Southwest winds around 5 knots, becoming southeast in the
afternoon. Seas around 2 feet. Wave Detail: Southeast 2 feet at
6 seconds. A chance of showers and thunderstorms, mainly in the
morning.
.MONDAY NIGHT...South winds around 5 knots. Seas around 2 feet. Wave
Detail: Southeast 2 feet at 6 seconds.
.TUESDAY...Northwest winds around 5 knots. Seas around 2 feet in the
morning, then 1 foot or less. Wave Detail: South 2 feet at
5 seconds, becoming southwest 1 foot at 4 seconds and southeast
1 foot at 6 seconds. A chance of showers and thunderstorms, mainly
in the morning.
.TUESDAY NIGHT...West winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: Southwest 1 foot at 4 seconds and southeast 1 foot at
6 seconds. A chance of showers and thunderstorms after midnight.
.WEDNESDAY...Northwest winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: West 1 foot at 3 seconds and southeast 1 foot at
6 seconds. Showers and thunderstorms likely, mainly in the morning.
.WEDNESDAY NIGHT...Northwest winds 5 to 10 knots, becoming northeast
after midnight. Seas 1 foot or less. Wave Detail: Northwest 1 foot
at 3 seconds and southeast 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.

$$