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

Home |  Current Version |  Previous Version |  Text Only |  Print | Product List |  Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
188
FZUS54 KLIX 230530
CWFLIX

Coastal Waters Forecast
National Weather Service New Orleans LA
1230 AM CDT Tue Sep 23 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-GMZ501-231800-
1230 AM CDT Tue Sep 23 2025

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

Surface high pressure will remain centered just off to the east-
northeast of the coastal waters through Wednesday. This will
continue to result in benign conditions with generally light
southerly winds. An approaching cold front will result in higher
rain chances beginning Thursday, with winds and seas becoming more
chaotic in the vicinity of storms. As the front moves into the Gulf
Friday, high pressure will build in from the northwest resulting in
a period of offshore winds through the weekend. Outside of
thunderstorms, no marine hazards expected.

$$

GMZ530-231800-
Lake Pontchartrain and Lake Maurepas-
1230 AM CDT Tue Sep 23 2025

.REST OF TONIGHT...Southeast winds around 5 knots. Waves 1 foot or
less.
.TUESDAY...Southeast winds 5 to 10 knots. Waves 1 foot or less, then
around 2 feet in the afternoon. A slight chance of showers and
thunderstorms in the afternoon.
.TUESDAY NIGHT...South winds 5 to 10 knots. Waves around 2 feet in
the evening, then 1 foot or less.
.WEDNESDAY...Southwest winds 5 to 10 knots. Waves 1 foot or less,
then around 2 feet in the afternoon. A chance of showers and
thunderstorms in the afternoon.
.WEDNESDAY NIGHT...Southwest winds 5 to 10 knots. Waves around
2 feet. A chance of showers and thunderstorms.
.THURSDAY...West winds 5 to 10 knots. Waves around 2 feet. A chance
of thunderstorms. A chance of showers in the morning, then showers
likely in the afternoon.
.THURSDAY NIGHT...West winds 5 to 10 knots. Waves around 2 feet. A
chance of showers and thunderstorms in the evening, then a slight
chance of showers after midnight.
.FRIDAY...Northwest winds 5 to 10 knots. Waves around 2 feet in the
morning, then 1 foot or less. A slight chance of showers and
thunderstorms in the afternoon.
.FRIDAY NIGHT...North winds 5 to 10 knots. Waves around 2 feet.
.SATURDAY...North winds 5 to 10 knots. Waves around 2 feet in the
morning, then 1 foot or less.
.SATURDAY NIGHT...North winds 5 to 10 knots. Waves around 2 feet.

Winds and waves higher in and near thunderstorms.

$$

GMZ534-231800-
Lake Borgne-
1230 AM CDT Tue Sep 23 2025

.REST OF TONIGHT...South winds 5 to 10 knots. Waves 1 foot or less.
.TUESDAY...Southeast winds around 5 knots, increasing to 10 to
15 knots with gusts up to 20 knots in the afternoon. Waves 1 foot or
less, then around 2 feet in the afternoon.
.TUESDAY NIGHT...South winds 5 to 10 knots. Waves around 2 feet in
the evening, then 1 foot or less.
.WEDNESDAY...Southwest winds around 5 knots, becoming south 10 to
15 knots in the afternoon. Waves 1 foot or less, then around 2 feet
in the afternoon. A chance of showers and thunderstorms in the
afternoon.
.WEDNESDAY NIGHT...Southwest winds around 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.
.THURSDAY...West winds around 10 knots. Waves around 2 feet. A
chance of thunderstorms. A chance of showers in the morning, then
showers in the afternoon.
.THURSDAY NIGHT...West winds 5 to 10 knots. Waves around 2 feet.
Showers likely with a chance of thunderstorms in the evening, then a
chance of showers with a slight chance of thunderstorms after
midnight.
.FRIDAY...Northwest winds 5 to 10 knots. Waves around 2 feet in the
morning, then 1 foot or less. A slight chance of showers and
thunderstorms.
.FRIDAY NIGHT...Northwest winds 5 to 10 knots, becoming north after
midnight. Waves around 2 feet.
.SATURDAY...North winds 5 to 10 knots. Waves around 2 feet in the
morning, then 1 foot or less.
.SATURDAY NIGHT...Northeast winds 5 to 10 knots. Waves 1 foot or
less, then around 2 feet after midnight.

Winds and waves higher in and near thunderstorms.

$$

GMZ532-231800-
Mississippi Sound-
1230 AM CDT Tue Sep 23 2025

.REST OF TONIGHT...South winds 5 to 10 knots. Waves 1 to 2 feet.
.TUESDAY...Southeast winds 5 to 10 knots. Waves 1 foot or less, then
around 2 feet in the afternoon.
.TUESDAY NIGHT...South winds 5 to 10 knots. Waves around 2 feet.
.WEDNESDAY...Southwest winds 5 to 10 knots, becoming south 10 to
15 knots in the afternoon. Waves 1 foot or less, then 2 to 3 feet in
the afternoon. A slight chance of showers and thunderstorms in the
afternoon.
.WEDNESDAY NIGHT...Southwest winds 10 to 15 knots. Waves around
2 feet. A slight chance of showers and thunderstorms in the evening,
then a chance of showers and thunderstorms after midnight.
.THURSDAY...West winds around 10 knots. Waves around 2 feet. A
chance of showers and thunderstorms in the morning, then showers
with thunderstorms likely in the afternoon.
.THURSDAY NIGHT...West winds around 10 knots. Waves around 2 feet. A
chance of thunderstorms. Showers likely, mainly in the evening.
.FRIDAY...North winds 5 to 10 knots, becoming west in the afternoon.
Waves around 2 feet. A slight chance of showers and thunderstorms.
.FRIDAY NIGHT...West winds around 10 knots, becoming north after
midnight. Waves around 2 feet.
.SATURDAY...North winds 5 to 10 knots. Waves around 2 feet in the
morning, then 1 foot or less.
.SATURDAY NIGHT...North winds 5 to 10 knots. Waves 1 to 2 feet.

Winds and waves higher in and near thunderstorms.

$$

GMZ536-538-231800-
Chandeleur Sound-Breton Sound-
1230 AM CDT Tue Sep 23 2025

.REST OF TONIGHT...South winds 5 to 10 knots. Waves around 2 feet.
.TUESDAY...Southeast winds 5 to 10 knots. Waves 1 foot or less, then
around 2 feet in the afternoon.
.TUESDAY NIGHT...South winds 5 to 10 knots. Waves around 2 feet.
.WEDNESDAY...South winds 5 to 10 knots. Waves 1 foot or less, then
around 2 feet in the afternoon. A slight chance of showers and
thunderstorms in the afternoon.
.WEDNESDAY NIGHT...Southwest winds 10 to 15 knots. Waves around
2 feet. A slight chance of showers and thunderstorms in the evening,
then a chance of showers and thunderstorms after midnight.
.THURSDAY...West winds around 10 knots. Waves around 2 feet. A
chance of thunderstorms. Showers.
.THURSDAY NIGHT...West winds around 10 knots. Waves around 2 feet. A
chance of thunderstorms. Showers likely.
.FRIDAY...Northwest winds 5 to 10 knots. Waves around 2 feet in the
morning, then 1 foot or less. A chance of showers and thunderstorms.
.FRIDAY NIGHT...West winds 5 to 10 knots, becoming north after
midnight. Waves around 2 feet. A slight chance of showers and
thunderstorms in the evening.
.SATURDAY...North winds 5 to 10 knots. Waves around 2 feet in the
morning, then 1 foot or less.
.SATURDAY NIGHT...North winds 5 to 10 knots. Waves 1 to 2 feet.

Winds and waves higher in and near thunderstorms.

$$

GMZ555-557-231800-
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-
1230 AM CDT Tue Sep 23 2025

.REST OF TONIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet. Wave Detail: Southeast 2 feet at 4 seconds.
.TUESDAY...Southeast winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: Southeast 1 foot at 4 seconds.
.TUESDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet in
the evening, then 1 foot or less. Wave Detail: Southeast 1 foot at
4 seconds.
.WEDNESDAY...South winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: Southeast 1 foot at 4 seconds. A slight chance of showers
and thunderstorms in the afternoon.
.WEDNESDAY 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 southwest 1 foot at 3 seconds. A chance of
showers and thunderstorms after midnight.
.THURSDAY...West winds around 10 knots. Seas around 2 feet. Wave
Detail: Southwest 2 feet at 3 seconds. A chance of thunderstorms. A
chance of showers in the morning, then showers in the afternoon.
.THURSDAY NIGHT...West winds around 10 knots. Seas around 2 feet.
Wave Detail: West 2 feet at 3 seconds. A chance of thunderstorms.
Showers.
.FRIDAY...Northwest winds around 10 knots. Seas around 2 feet. Wave
Detail: Northwest 2 feet at 3 seconds. A chance of showers and
thunderstorms.
.FRIDAY NIGHT...West winds around 10 knots, becoming north after
midnight. Seas 1 foot or less, then around 2 feet after midnight.
Wave Detail: Northwest 1 foot at 3 seconds, becoming north 1 foot at
3 seconds. A slight chance of showers and thunderstorms.
.SATURDAY...North winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: North 1 foot at 3 seconds. A slight chance of showers and
thunderstorms.
.SATURDAY NIGHT...North winds 5 to 10 knots. Seas 1 foot or less.

Winds and seas higher in and near thunderstorms.

$$

GMZ550-552-231800-
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-
1230 AM CDT Tue Sep 23 2025

.REST OF TONIGHT...Southeast winds 5 to 10 knots. Seas 1 to 2 feet.
Wave Detail: Southeast 2 feet at 5 seconds. A slight chance of
showers and thunderstorms late.
.TUESDAY...Southeast winds 5 to 10 knots. Seas 1 to 2 feet. Wave
Detail: South 2 feet at 5 seconds.
.TUESDAY NIGHT...South winds 5 to 10 knots. Seas 1 to 2 feet. Wave
Detail: Southeast 1 foot at 5 seconds.
.WEDNESDAY...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.
.WEDNESDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or
less, then around 2 feet after midnight. Wave Detail: South 1 foot
at 3 seconds, becoming south 1 foot at 4 seconds. A slight chance of
showers and thunderstorms in the evening, then a chance of showers
and thunderstorms after midnight.
.THURSDAY...West winds around 10 knots. Seas around 2 feet. Wave
Detail: Southwest 2 feet at 3 seconds. A chance of thunderstorms.
Showers.
.THURSDAY NIGHT...West winds around 10 knots. Seas around 2 feet.
Wave Detail: West 2 feet at 4 seconds. A chance of thunderstorms.
Showers.
.FRIDAY...Northwest winds 5 to 10 knots. Seas 1 to 2 feet. Wave
Detail: Northwest 2 feet at 3 seconds. A chance of thunderstorms. A
chance of showers.
.FRIDAY NIGHT...Northwest winds 5 to 10 knots, becoming north after
midnight. Seas 1 to 2 feet. Wave Detail: Northwest 1 foot at
3 seconds. A slight chance of showers and thunderstorms.
.SATURDAY...North winds 5 to 10 knots. Seas 1 to 2 feet. Wave
Detail: North 1 foot at 3 seconds. A slight chance of showers in the
morning.
.SATURDAY NIGHT...North winds 5 to 10 knots. Seas 1 foot or less.

Winds and seas higher in and near thunderstorms.

$$

GMZ575-577-231800-
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-
1230 AM CDT Tue Sep 23 2025

.REST OF TONIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet. Wave Detail: Southeast 2 feet at 4 seconds.
.TUESDAY...Southeast winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: East 2 feet at 4 seconds.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas around 2 feet
in the evening, then 1 foot or less. Wave Detail: Southeast 1 foot
at 4 seconds.
.WEDNESDAY...South 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 in the afternoon.
.WEDNESDAY NIGHT...South winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: South 1 foot at 3 seconds. A slight chance of showers
and thunderstorms after midnight.
.THURSDAY...West winds around 10 knots. Seas 1 foot or less, then
around 2 feet in the afternoon. Wave Detail: Southwest 1 foot at
3 seconds, becoming west 2 feet at 4 seconds. A chance of
thunderstorms. A chance of showers in the morning, then showers
likely in the afternoon.
.THURSDAY NIGHT...West winds around 10 knots. Seas around 2 feet.
Wave Detail: West 2 feet at 4 seconds. A chance of thunderstorms.
Showers.
.FRIDAY...Northwest winds around 10 knots. Seas around 2 feet. Wave
Detail: North 2 feet at 4 seconds. A chance of thunderstorms.
Showers.
.FRIDAY NIGHT...Northwest winds around 10 knots. Seas around 2 feet.
Wave Detail: North 2 feet at 4 seconds. A chance of showers with a
slight chance of thunderstorms.
.SATURDAY...North winds around 10 knots. Seas around 2 feet. Wave
Detail: North 1 foot at 4 seconds. A chance of showers with a slight
chance of thunderstorms.
.SATURDAY NIGHT...North winds 5 to 10 knots. Seas around 2 feet in
the evening, then 1 foot or less. A slight chance of showers.

Winds and seas higher in and near thunderstorms.

$$

GMZ570-572-231800-
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-
1230 AM CDT Tue Sep 23 2025

.REST OF TONIGHT...Southeast winds around 10 knots. Seas around
2 feet. Wave Detail: Southeast 2 feet at 5 seconds. A slight chance
of showers. A slight chance of thunderstorms late.
.TUESDAY...Southeast winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southeast 2 feet at 5 seconds. A slight chance of showers in
the afternoon.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: Southeast 2 feet at 5 seconds.
.WEDNESDAY...South winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southeast 2 feet at 4 seconds. A slight chance of
thunderstorms. A slight chance of showers in the morning, then a
chance of showers in the afternoon.
.WEDNESDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: Southeast 1 foot at 4 seconds. A slight chance of
showers in the evening, then a chance of showers with a slight
chance of thunderstorms after midnight.
.THURSDAY...West winds around 10 knots. Seas around 2 feet. Wave
Detail: Southwest 2 feet at 3 seconds and southeast 1 foot at
4 seconds. A chance of thunderstorms. Showers.
.THURSDAY NIGHT...West winds around 10 knots. Seas around 2 feet.
Wave Detail: West 2 feet at 4 seconds and southeast 1 foot at
5 seconds. A chance of thunderstorms. Showers.
.FRIDAY...Northwest winds around 10 knots. Seas around 2 feet. Wave
Detail: Northwest 2 feet at 4 seconds and southeast 1 foot at
5 seconds. A chance of thunderstorms. Showers likely, mainly in the
morning.
.FRIDAY NIGHT...Northwest winds around 10 knots. Seas around 2 feet.
Wave Detail: North 1 foot at 4 seconds. A chance of showers. A
slight chance of thunderstorms after midnight.
.SATURDAY...North winds around 10 knots. Seas around 2 feet. Wave
Detail: North 1 foot at 4 seconds. A slight chance of showers and
thunderstorms.
.SATURDAY NIGHT...Northeast winds 5 to 10 knots. Seas around 2 feet.
A slight chance of showers.

Winds and seas higher in and near thunderstorms.

$$