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

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573
FZUS54 KLIX 021657
CWFLIX

Coastal Waters Forecast
National Weather Service New Orleans LA
1156 AM CDT Tue Sep 2 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-GMZ501-030500-
1156 AM CDT Tue Sep 2 2025

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

A weak frontal boundary will remain stalled along the coast of
Louisiana through tonight. This will keep a persistent east wind of
10 to 15 knots and slightly higher seas of around 2 feet in place. A
much stronger front will push through the waters Wednesday night and
winds will shift to the north. A drier surface high will then settle
in for Thursday and Friday with very low rain chances. This high
will begin to move to the east on Saturday allowing for a light
southerly flow to develop. Offshore shower and thunderstorm activity
will also increase as moisture feeds back into the area over the
weekend.

$$

GMZ530-030500-
Lake Pontchartrain and Lake Maurepas-
1156 AM CDT Tue Sep 2 2025

.THIS AFTERNOON...East winds around 10 knots. Waves 1 foot or less,
then around 2 feet.
.TONIGHT...Southeast winds 5 to 10 knots, becoming east after
midnight. Waves 1 to 2 feet in the evening, then 1 foot or less.
.WEDNESDAY...Northeast winds around 5 knots, becoming southeast in
the afternoon. Waves 1 foot or less.
.WEDNESDAY NIGHT...Southeast winds around 5 knots, becoming
southwest around 5 knots after midnight. Waves 1 foot or less.
.THURSDAY...Northwest winds around 5 knots, becoming southeast in
the afternoon. Waves 1 foot or less.
.THURSDAY NIGHT...South winds 5 to 10 knots, becoming southwest
after midnight. Waves 1 foot or less.
.FRIDAY...South winds around 5 knots, becoming east around 5 knots
in the afternoon. Waves 1 foot or less.
.FRIDAY NIGHT...Southeast winds 5 to 10 knots, becoming south after
midnight. Waves 1 foot or less.
.SATURDAY...East winds around 5 knots. Waves 1 foot or less.
.SATURDAY NIGHT...Southeast winds around 5 knots. Waves 1 foot or
less.

$$

GMZ534-030500-
Lake Borgne-
1156 AM CDT Tue Sep 2 2025

.THIS AFTERNOON...East winds 10 to 15 knots. Waves 1 foot or less,
then 2 to 3 feet.
.TONIGHT...East winds 5 to 10 knots. Waves around 2 feet in the
evening, then 1 foot or less.
.WEDNESDAY...Northeast winds 5 to 10 knots, becoming east in the
afternoon. Waves 1 foot or less.
.WEDNESDAY NIGHT...Southeast winds around 5 knots, becoming
southwest after midnight. Waves 1 foot or less.
.THURSDAY...North winds around 5 knots, becoming east in the
afternoon. Waves 1 foot or less.
.THURSDAY NIGHT...South winds 5 to 10 knots, becoming southwest
after midnight. Waves 1 foot or less.
.FRIDAY...North winds around 5 knots, becoming southeast in the
afternoon. Waves 1 foot or less.
.FRIDAY NIGHT...South winds 5 to 10 knots. Waves 1 foot or less.
.SATURDAY...East winds around 5 knots. Waves 1 foot or less.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Waves 1 foot or
less.

$$

GMZ532-030500-
Mississippi Sound-
1156 AM CDT Tue Sep 2 2025

.THIS AFTERNOON...East winds 10 to 15 knots. Waves 1 foot or less,
then around 2 feet.
.TONIGHT...Southeast winds 5 to 10 knots, becoming northeast after
midnight. Waves 1 to 2 feet in the evening, then 1 foot or less.
.WEDNESDAY...Northeast winds 5 to 10 knots, becoming southeast in
the afternoon. Waves 1 foot or less.
.WEDNESDAY NIGHT...South winds 5 to 10 knots, becoming southwest
after midnight. Waves 1 foot or less.
.THURSDAY...North winds around 5 knots, becoming southeast in the
afternoon. Waves 1 foot or less.
.THURSDAY NIGHT...South winds 5 to 10 knots. Waves 1 foot or less.
.FRIDAY...Northeast winds around 5 knots, becoming southeast in the
afternoon. Waves 1 foot or less.
.FRIDAY NIGHT...South winds 5 to 10 knots. Waves 1 foot or less.
.SATURDAY...Northeast winds around 5 knots, becoming southeast in
the afternoon. Waves 1 foot or less.
.SATURDAY NIGHT...South winds around 5 knots, becoming east after
midnight. Waves 1 foot or less.

$$

GMZ536-538-030500-
Chandeleur Sound-Breton Sound-
1156 AM CDT Tue Sep 2 2025

.THIS AFTERNOON...East winds 10 to 15 knots with gusts up to
20 knots. Waves 1 foot or less, then 2 to 3 feet. A slight chance of
showers and thunderstorms early.
.TONIGHT...East winds 10 to 15 knots, diminishing to 5 to 10 knots
after midnight. Waves around 2 feet in the evening, then 1 foot or
less.
.WEDNESDAY...East winds 5 to 10 knots. Waves 1 foot or less.
.WEDNESDAY NIGHT...Southeast winds 5 to 10 knots. Waves 1 foot or
less.
.THURSDAY...Northeast winds around 5 knots, becoming east in the
afternoon. Waves 1 foot or less.
.THURSDAY NIGHT...South winds 5 to 10 knots. Waves 1 foot or less.
.FRIDAY...Northeast winds around 5 knots, becoming southeast in the
afternoon. Waves 1 foot or less.
.FRIDAY NIGHT...Southeast winds 5 to 10 knots. Waves 1 foot or less.
.SATURDAY...East winds around 5 knots. Waves 1 foot or less.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Waves 1 foot or
less.

Winds and waves higher in and near thunderstorms.

$$

GMZ555-557-030500-
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-
1156 AM CDT Tue Sep 2 2025

.THIS AFTERNOON...East winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: East 3 feet at 5 seconds. A chance of showers and
thunderstorms early, then a slight chance of showers and
thunderstorms late.
.TONIGHT...East winds 10 to 15 knots, diminishing to 5 to 10 knots
after midnight. Seas 2 to 3 feet. Wave Detail: East 2 feet at
5 seconds.
.WEDNESDAY...East winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: East 2 feet at 5 seconds.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: East 1 foot at 4 seconds.
.THURSDAY...East winds around 5 knots. Seas 1 foot or less. Wave
Detail: East 1 foot at 4 seconds.
.THURSDAY NIGHT...Southeast winds around 5 knots. Seas 1 foot or
less. Wave Detail: East 1 foot at 4 seconds.
.FRIDAY...East winds around 5 knots. Seas 1 foot or less. Wave
Detail: East 1 foot at 3 seconds.
.FRIDAY NIGHT...Southeast winds around 5 knots. Seas 1 foot or less.
Wave Detail: Southeast 1 foot at 3 seconds.
.SATURDAY...East winds around 5 knots. Seas 1 foot or less. Wave
Detail: Southeast 1 foot at 3 seconds. A slight chance of showers
and thunderstorms in the afternoon.
.SATURDAY NIGHT...East winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: East 1 foot at 3 seconds.

Winds and seas higher in and near thunderstorms.

$$

GMZ550-552-030500-
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-
1156 AM CDT Tue Sep 2 2025

.THIS AFTERNOON...East winds 10 to 15 knots. Seas around 2 feet.
Wave Detail: East 2 feet at 4 seconds. A chance of showers and
thunderstorms.
.TONIGHT...East winds 10 to 15 knots with gusts up to 20 knots,
diminishing to 5 to 10 knots after midnight. Seas 1 to 2 feet. Wave
Detail: East 2 feet at 4 seconds. A chance of showers and
thunderstorms, mainly in the evening.
.WEDNESDAY...East winds 5 to 10 knots. Seas 1 to 2 feet. Wave
Detail: East 2 feet at 4 seconds.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas 1 to 2 feet in the
evening, then 1 foot or less. Wave Detail: East 1 foot at 4 seconds.
.THURSDAY...Northeast winds around 5 knots. Seas 1 foot or less.
Wave Detail: East 1 foot at 4 seconds.
.THURSDAY NIGHT...Southeast winds around 5 knots. Seas 1 foot or
less. Wave Detail: Southeast 1 foot at 4 seconds.
.FRIDAY...East winds around 5 knots. Seas 1 foot or less.
.FRIDAY NIGHT...Southeast winds around 5 knots. Seas 1 foot or less.
Wave Detail: Southeast 1 foot at 3 seconds.
.SATURDAY...Southeast winds around 5 knots. Seas 1 foot or less.
Wave Detail: Southeast 1 foot at 3 seconds. A slight chance of
showers and thunderstorms in the afternoon.
.SATURDAY NIGHT...Southeast winds around 5 knots. Seas 1 foot or
less. Wave Detail: Southeast 1 foot at 3 seconds. A slight chance of
showers. A slight chance of thunderstorms after midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ575-577-030500-
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-
1156 AM CDT Tue Sep 2 2025

.THIS AFTERNOON...East winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: East 3 feet at 5 seconds. A chance of showers and
thunderstorms.
.TONIGHT...East winds 10 to 15 knots, diminishing to 5 to 10 knots
after midnight. Seas 2 to 3 feet. Wave Detail: East 3 feet at
5 seconds. A chance of showers and thunderstorms.
.WEDNESDAY...East winds around 10 knots. Seas around 2 feet. Wave
Detail: East 2 feet at 5 seconds. A slight chance of showers and
thunderstorms.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet in
the evening, then 1 foot or less. Wave Detail: East 1 foot at
4 seconds. A slight chance of thunderstorms. A slight chance of
showers in the evening, then a chance of showers after midnight.
.THURSDAY...Northeast winds 5 to 10 knots. Seas 1 foot or less, then
around 2 feet in the afternoon. Wave Detail: East 1 foot at
4 seconds, becoming east 1 foot at 3 seconds. A slight chance of
showers and thunderstorms.
.THURSDAY NIGHT...East winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: East 1 foot at 3 seconds. A slight chance of showers in
the evening.
.FRIDAY...East winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: East 1 foot at 3 seconds. A slight chance of thunderstorms
in the morning. A slight chance of showers.
.FRIDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: East 1 foot at 3 seconds. A slight chance of showers
after midnight.
.SATURDAY...East winds around 5 knots. Seas 1 foot or less. Wave
Detail: East 1 foot at 3 seconds. A slight chance of thunderstorms.
A slight chance of showers in the morning, then a chance of showers
in the afternoon.
.SATURDAY NIGHT...East winds around 5 knots. Seas 1 foot or less.
Wave Detail: Southeast 1 foot at 4 seconds. A slight chance of
showers. A slight chance of thunderstorms after midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ570-572-030500-
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-
1156 AM CDT Tue Sep 2 2025

.THIS AFTERNOON...East winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: East 3 feet at 6 seconds. Showers and thunderstorms early,
then showers and thunderstorms likely late.
.TONIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail:
East 3 feet at 5 seconds. A chance of showers and thunderstorms.
.WEDNESDAY...Northeast winds around 10 knots. Seas around 2 feet.
Wave Detail: East 2 feet at 5 seconds. A chance of showers and
thunderstorms, mainly in the morning.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: East 2 feet at 5 seconds. A slight chance of showers.
.THURSDAY...Northeast winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: East 2 feet at 4 seconds. A slight chance of showers and
thunderstorms.
.THURSDAY NIGHT...East winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: East 1 foot at 4 seconds.
.FRIDAY...East winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: East 1 foot at 4 seconds. A slight chance of showers in the
afternoon.
.FRIDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: East 1 foot at 3 seconds. A slight chance of showers.
.SATURDAY...Southeast winds around 5 knots. Seas 1 foot or less.
Wave Detail: Southeast 1 foot at 3 seconds. A slight chance of
thunderstorms. A slight chance of showers in the morning, then a
chance of showers in the afternoon.
.SATURDAY NIGHT...East winds around 5 knots. Seas 1 foot or less.
Wave Detail: East 1 foot at 3 seconds. A slight chance of showers. A
slight chance of thunderstorms after midnight.

Winds and seas higher in and near thunderstorms.

$$