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 32 33 34 35
274
FZUS54 KLIX 291800
CWFLIX

Coastal Waters Forecast
National Weather Service New Orleans LA
100 PM CDT Mon Sep 29 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-GMZ501-300615-
100 PM CDT Mon Sep 29 2025

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

Offshore flow will continue as weak low pressure slowly works
towards the southwestern Gulf. This will continue to produce light to
moderate offshore flow over the next few days. Overall, not
anticipating a lot of impacts through midweek, but a few showers and
thunderstorms may begin to develop over the coastal waters Tuesday
and Wednesday. Winds, seas/waves, and rain chances will begin to
increase late in the week. Headlines will likely be needed and could
be needed as early as Thursday night. With broad high pressure
centered across the northeast and mid Atlantic and wedging southwest
towards the Gulf coast and weak low pressure over the Bay of Campeche
the pressure gradient will tighten and strong easterly winds could
set up across the northern Gulf for multiple days.

$$

GMZ530-300615-
Lake Pontchartrain and Lake Maurepas-
100 PM CDT Mon Sep 29 2025

.REST OF TODAY...East winds 5 to 10 knots. Waves 1 foot or less.
.TONIGHT...Southeast winds around 5 knots, becoming northwest after
midnight. Waves 1 foot or less.
.TUESDAY...North winds 5 to 10 knots, becoming northwest in the
afternoon. Waves 1 foot or less.
.TUESDAY NIGHT...North winds 5 to 10 knots. Waves 1 foot or less,
then around 2 feet after midnight.
.WEDNESDAY...Northeast winds 5 to 10 knots, becoming east in the
afternoon. Waves 1 foot or less.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Waves 1 foot or less.
.THURSDAY...Northeast winds 5 to 10 knots, becoming east 10 to
15 knots in the afternoon. Waves 2 to 3 feet. A chance of showers
and thunderstorms in the afternoon.
.THURSDAY NIGHT...East winds 10 to 15 knots. Waves 2 to 3 feet.
.FRIDAY...East winds around 15 knots. Waves 3 to 4 feet. A slight
chance of showers and thunderstorms in the afternoon.
.FRIDAY NIGHT...East winds 10 to 15 knots. Waves 2 to 3 feet.

Winds and waves higher in and near thunderstorms.

$$

GMZ534-300615-
Lake Borgne-
100 PM CDT Mon Sep 29 2025

.REST OF TODAY...East winds 5 to 10 knots. Waves around 2 feet.
.TONIGHT...South winds around 5 knots, becoming northwest after
midnight. Waves 1 foot or less.
.TUESDAY...North winds 5 to 10 knots, becoming east in the
afternoon. Waves 1 foot or less.
.TUESDAY NIGHT...East winds 5 to 10 knots, becoming northwest after
midnight. Waves 1 foot or less.
.WEDNESDAY...Northeast winds 5 to 10 knots, becoming east in the
afternoon. Waves 1 foot or less.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Waves 1 foot or less,
then around 2 feet after midnight.
.THURSDAY...Northeast winds 15 to 20 knots, becoming east 20 to
25 knots in the afternoon. Waves 2 to 4 feet, building to 4 to
5 feet in the afternoon. A slight chance of showers and
thunderstorms in the morning, then a chance of showers and
thunderstorms in the afternoon.
.THURSDAY NIGHT...East winds 15 to 20 knots, increasing to 20 to
25 knots after midnight. Waves 3 to 4 feet. A slight chance of
showers and thunderstorms.
.FRIDAY...East winds 20 to 25 knots. Waves 4 to 5 feet. A slight
chance of showers and thunderstorms in the morning, then a chance of
showers and thunderstorms in the afternoon.
.FRIDAY NIGHT...East winds 15 to 20 knots. Waves 3 to 4 feet. A
slight chance of showers. A slight chance of thunderstorms after
midnight.

Winds and waves higher in and near thunderstorms.

$$

GMZ532-300615-
Mississippi Sound-
100 PM CDT Mon Sep 29 2025

.REST OF TODAY...Southeast winds 5 to 10 knots. Waves around 2 feet.
.TONIGHT...Southwest winds 5 to 10 knots, becoming north after
midnight. Waves 1 foot or less, then around 2 feet after midnight.
.TUESDAY...Northeast winds 5 to 10 knots, becoming southeast in the
afternoon. Waves around 2 feet in the morning, then 1 foot or less.
.TUESDAY NIGHT...West winds 5 to 10 knots, becoming north after
midnight. Waves 1 to 2 feet in the evening, then 1 foot or less.
.WEDNESDAY...Northeast winds 5 to 10 knots, becoming east in the
afternoon. Waves around 2 feet.
.WEDNESDAY NIGHT...East winds 5 to 10 knots, becoming northeast
after midnight. Waves 1 foot or less, then around 2 feet after
midnight.
.THURSDAY...East winds 15 to 20 knots. Waves 3 to 4 feet. A slight
chance of showers in the morning, then a chance of showers with a
slight chance of thunderstorms in the afternoon.
.THURSDAY NIGHT...East winds 15 to 20 knots, increasing to 20 to
25 knots after midnight. Waves 3 to 4 feet. A slight chance of
showers and thunderstorms.
.FRIDAY...East winds 20 to 25 knots. Waves 4 to 5 feet. A slight
chance of showers and thunderstorms.
.FRIDAY NIGHT...East winds 15 to 20 knots. Waves 3 to 4 feet. A
slight chance of showers and thunderstorms.

Winds and waves higher in and near thunderstorms.

$$

GMZ536-538-300615-
Chandeleur Sound-Breton Sound-
100 PM CDT Mon Sep 29 2025

.REST OF TODAY...East winds 10 to 15 knots, diminishing to 5 to
10 knots late. Waves around 2 feet.
.TONIGHT...South winds around 5 knots, becoming northwest after
midnight. Waves 1 foot or less, then around 2 feet after midnight.
.TUESDAY...North winds 5 to 10 knots, becoming east in the
afternoon. Waves around 2 feet in the morning, then 1 foot or less.
.TUESDAY NIGHT...Southwest winds 5 to 10 knots, becoming northwest
after midnight. Waves 1 to 2 feet in the evening, then 1 foot or
less.
.WEDNESDAY...Northeast winds 5 to 10 knots, becoming east in the
afternoon. Waves around 2 feet. A slight chance of showers and
thunderstorms.
.WEDNESDAY NIGHT...East winds 5 to 10 knots, increasing to 10 to
15 knots after midnight. Waves 1 foot or less, then 2 to 3 feet
after midnight. A slight chance of showers and thunderstorms after
midnight.
.THURSDAY...East winds 15 to 20 knots, increasing to 20 to 25 knots
in the afternoon. Waves 3 to 5 feet. A chance of showers. A slight
chance of thunderstorms in the morning, then a chance of
thunderstorms in the afternoon.
.THURSDAY NIGHT...East winds 15 to 20 knots, increasing to 20 to
25 knots after midnight. Waves 4 to 5 feet. A chance of showers. A
slight chance of thunderstorms in the evening, then a chance of
thunderstorms after midnight.
.FRIDAY...East winds 20 to 25 knots, increasing to 25 to 30 knots in
the afternoon. Waves 5 to 6 feet. A chance of showers and
thunderstorms.
.FRIDAY NIGHT...East winds 20 to 25 knots. Waves 4 to 5 feet. A
chance of showers with a slight chance of thunderstorms.

Winds and waves higher in and near thunderstorms.

$$

GMZ555-557-300615-
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-
100 PM CDT Mon Sep 29 2025

.REST OF TODAY...Northeast winds 10 to 15 knots, becoming east 5 to
10 knots late. Seas around 2 feet. Wave Detail: East 2 feet at
4 seconds.
.TONIGHT...East winds 5 to 10 knots, becoming north after midnight.
Seas around 2 feet. Wave Detail: East 2 feet at 5 seconds.
.TUESDAY...Northeast winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Northeast 2 feet at 5 seconds.
.TUESDAY NIGHT...North winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: East 2 feet at 5 seconds. A slight chance of showers and
thunderstorms after midnight.
.WEDNESDAY...Northeast winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Northeast 2 feet at 5 seconds. A slight chance of
thunderstorms. A slight chance of showers in the morning, then a
chance of showers in the afternoon.
.WEDNESDAY NIGHT...East winds 5 to 10 knots, increasing to 10 to
15 knots after midnight. Seas around 2 feet. Wave Detail: East
2 feet at 5 seconds. A slight chance of thunderstorms. A slight
chance of showers in the evening, then a chance of showers after
midnight.
.THURSDAY...East winds 15 to 20 knots. Seas 4 to 6 feet,
occasionally to 8 feet. Wave Detail: East 5 feet at 6 seconds. A
chance of thunderstorms. A chance of showers in the morning, then
showers likely in the afternoon.
.THURSDAY NIGHT...East winds 15 to 20 knots, increasing to 20 to
25 knots after midnight. Seas 5 to 7 feet, occasionally to 9 feet.
Wave Detail: East 7 feet at 7 seconds. A chance of showers and
thunderstorms.
.FRIDAY...East winds 20 to 25 knots. Seas 6 to 9 feet, occasionally
to 11 feet. Wave Detail: East 9 feet at 8 seconds. A chance of
thunderstorms. A chance of showers in the morning, then showers
likely in the afternoon.
.FRIDAY NIGHT...East winds 20 to 25 knots. Seas 5 to 7 feet,
occasionally to 9 feet. Wave Detail: East 7 feet at 8 seconds.
Showers likely with a chance of thunderstorms.

Winds and seas higher in and near thunderstorms.

$$

GMZ550-552-300615-
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-
100 PM CDT Mon Sep 29 2025

.REST OF TODAY...East winds around 10 knots. Seas 1 to 2 feet. Wave
Detail: East 2 feet at 3 seconds.
.TONIGHT...East winds 5 to 10 knots, becoming north after midnight.
Seas 1 to 2 feet in the evening, then 1 foot or less. Wave Detail:
East 2 feet at 4 seconds, becoming east 1 foot at 4 seconds.
.TUESDAY...North winds 5 to 10 knots. Seas 1 to 2 feet. Wave Detail:
Northeast 1 foot at 4 seconds.
.TUESDAY NIGHT...North winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: Northwest 1 foot at 2 seconds and east 1 foot at
4 seconds.
.WEDNESDAY...North winds 5 to 10 knots, becoming northeast in the
afternoon. Seas 1 foot or less. Wave Detail: North 1 foot at
3 seconds. A slight chance of showers and thunderstorms.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas 1 foot or less,
then 1 to 2 feet after midnight. Wave Detail: East 1 foot at
3 seconds. A slight chance of showers and thunderstorms.
.THURSDAY...East winds 10 to 15 knots, increasing to 15 to 20 knots
in the afternoon. Seas 2 to 4 feet, occasionally to 5 feet. Wave
Detail: East 3 feet at 4 seconds. A chance of showers with a slight
chance of thunderstorms in the morning, then showers likely with a
chance of thunderstorms in the afternoon.
.THURSDAY NIGHT...East winds 15 to 20 knots. Seas 2 to 4 feet,
occasionally to 5 feet. Wave Detail: East 4 feet at 5 seconds.
Showers likely with a chance of thunderstorms.
.FRIDAY...East winds 20 to 25 knots. Seas 3 to 5 feet, occasionally
to 6 feet. Wave Detail: East 5 feet at 5 seconds. A chance of
thunderstorms. Showers likely.
.FRIDAY NIGHT...East winds 20 to 25 knots. Seas 3 to 5 feet,
occasionally to 6 feet. Wave Detail: East 5 feet at 6 seconds. A
chance of thunderstorms. Showers likely, mainly in the evening.

Winds and seas higher in and near thunderstorms.

$$

GMZ575-577-300615-
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-
100 PM CDT Mon Sep 29 2025

.REST OF TODAY...Northeast winds 10 to 15 knots. Seas around 2 feet.
Wave Detail: Northeast 2 feet at 4 seconds.
.TONIGHT...Northeast winds 5 to 10 knots, becoming north after
midnight. Seas around 2 feet. Wave Detail: Northeast 2 feet at
5 seconds.
.TUESDAY...North winds 10 to 15 knots, diminishing to 5 to 10 knots
in the afternoon. Seas around 2 feet. Wave Detail: North 2 feet at
4 seconds. A slight chance of showers in the morning.
.TUESDAY NIGHT...North winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Northeast 2 feet at 4 seconds. A slight chance of showers in
the evening, then a chance of showers with a slight chance of
thunderstorms after midnight.
.WEDNESDAY...Northeast winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: North 2 feet at 4 seconds. A chance of showers with a slight
chance of thunderstorms.
.WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: Northeast 2 feet at 5 seconds. A chance of showers with a
slight chance of thunderstorms.
.THURSDAY...East winds 15 to 20 knots. Seas 3 to 5 feet,
occasionally to 6 feet, building to 5 to 7 feet, occasionally to
9 feet in the afternoon. Wave Detail: East 5 feet at 5 seconds,
becoming east 6 feet at 6 seconds. A chance of thunderstorms.
Showers.
.THURSDAY NIGHT...East winds 20 to 25 knots. Seas 6 to 8 feet,
occasionally to 10 feet. Wave Detail: East 8 feet at 7 seconds. A
chance of thunderstorms. Showers.
.FRIDAY...East winds 20 to 25 knots. Seas 7 to 9 feet, occasionally
to 11 feet. Wave Detail: East 9 feet at 8 seconds. Showers with a
chance of thunderstorms.
.FRIDAY NIGHT...East winds 20 to 25 knots. Seas 6 to 9 feet,
occasionally to 11 feet. Wave Detail: East 9 feet at 8 seconds.
Showers with a chance of thunderstorms.

Winds and seas higher in and near thunderstorms.

$$

GMZ570-572-300615-
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-
100 PM CDT Mon Sep 29 2025

.REST OF TODAY...Northeast winds 10 to 15 knots. Seas around 2 feet.
Wave Detail: Northeast 2 feet at 4 seconds.
.TONIGHT...East winds 10 to 15 knots, becoming northeast 5 to
10 knots after midnight. Seas around 2 feet. Wave Detail: East
2 feet at 4 seconds.
.TUESDAY...North winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Northeast 2 feet at 5 seconds.
.TUESDAY NIGHT...North winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Northeast 2 feet at 5 seconds and northwest 1 foot at
2 seconds. A slight chance of showers after midnight.
.WEDNESDAY...Northeast winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: North 2 feet at 4 seconds. A chance of showers with a slight
chance of thunderstorms.
.WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas around 2 feet.
Wave Detail: Northeast 2 feet at 5 seconds. A chance of showers with
a slight chance of thunderstorms.
.THURSDAY...East winds 10 to 15 knots, increasing to 15 to 20 knots
in the afternoon. Seas 2 to 3 feet, building to 3 to 5 feet,
occasionally to 6 feet in the afternoon. Wave Detail: East 3 feet at
5 seconds, becoming east 4 feet at 5 seconds. A chance of showers
with a slight chance of thunderstorms in the morning, then showers
likely with a chance of thunderstorms in the afternoon.
.THURSDAY NIGHT...East winds 15 to 20 knots. Seas 5 to 7 feet,
occasionally to 9 feet. Wave Detail: East 7 feet at 7 seconds.
Showers with a chance of thunderstorms.
.FRIDAY...East winds 20 to 25 knots. Seas 5 to 8 feet, occasionally
to 10 feet. Wave Detail: East 7 feet at 8 seconds. Showers with a
chance of thunderstorms.
.FRIDAY NIGHT...East winds 20 to 25 knots. Seas 6 to 8 feet,
occasionally to 10 feet. Wave Detail: East 8 feet at 8 seconds. A
chance of thunderstorms. Showers.

Winds and seas higher in and near thunderstorms.

$$