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

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FZUS54 KLIX 300001
CWFLIX

Coastal Waters Forecast
National Weather Service New Orleans LA
701 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-GMZ501-301300-
701 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.

$$

GMZ530-301300-
Lake Pontchartrain and Lake Maurepas-
701 PM CDT Mon Sep 29 2025

.TONIGHT...Southeast winds around 5 knots, becoming south late this
evening, then 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 with gusts up to 25 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 with gusts up to
20 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.
.SATURDAY...Northeast winds 10 to 15 knots, becoming east 15 to
20 knots in the afternoon. Waves 3 to 4 feet. A slight chance of
showers and thunderstorms in the morning, then a chance of showers
and thunderstorms in the afternoon.
.SATURDAY NIGHT...East winds 10 to 15 knots. Waves 2 to 3 feet. A
slight chance of showers.

Winds and waves higher in and near thunderstorms.

$$

GMZ534-301300-
Lake Borgne-
701 PM CDT Mon Sep 29 2025

.TONIGHT...Southeast winds around 5 knots, becoming south late this
evening, then 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 with gusts up to 30 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.
.SATURDAY...East winds 20 to 25 knots, increasing to 25 to 30 knots
in the afternoon. Waves 4 to 5 feet. A chance of showers. A slight
chance of thunderstorms in the morning, then a chance of
thunderstorms in the afternoon.
.SATURDAY NIGHT...East winds 20 to 25 knots, diminishing to 15 to
20 knots after midnight. Waves 3 to 4 feet. A slight chance of
thunderstorms. A chance of showers, mainly in the evening.

Winds and waves higher in and near thunderstorms.

$$

GMZ532-301300-
Mississippi Sound-
701 PM CDT Mon Sep 29 2025

.TONIGHT...South winds around 5 knots, becoming west late this
evening, then 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 with gusts up to 25 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.
.SATURDAY...East winds 20 to 25 knots. Waves 4 to 5 feet. A chance
of showers with a slight chance of thunderstorms in the morning,
then a chance of showers and thunderstorms in the afternoon.
.SATURDAY NIGHT...East winds 15 to 20 knots. Waves around 4 feet. A
chance of showers. A slight chance of thunderstorms after midnight.

Winds and waves higher in and near thunderstorms.

$$

GMZ536-538-301300-
Chandeleur Sound-Breton Sound-
701 PM CDT Mon Sep 29 2025

.TONIGHT...Southeast winds around 5 knots, becoming west late this
evening and early morning, then becoming north late. 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
with gusts up to 30 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.
.SATURDAY...East winds 25 to 30 knots. Waves 4 to 6 feet. A chance
of showers and thunderstorms.
.SATURDAY NIGHT...East winds 20 to 25 knots, diminishing to 15 to
20 knots after midnight. Waves 3 to 5 feet. A chance of showers with
a slight chance of thunderstorms.

Winds and waves higher in and near thunderstorms.

$$

GMZ555-557-301300-
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-
701 PM CDT Mon Sep 29 2025

.TONIGHT...East winds 5 to 10 knots, becoming north late this
evening and overnight. Seas around 2 feet.
.TUESDAY...Northeast winds 5 to 10 knots. Seas around 2 feet.
.TUESDAY NIGHT...North winds 5 to 10 knots. Seas around 2 feet. A
slight chance of showers and thunderstorms after midnight.
.WEDNESDAY...Northeast winds 5 to 10 knots. Seas around 2 feet. 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. 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 with gusts up to 25 knots.
Seas 4 to 6 feet, occasionally to 8 feet. 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. A
chance of showers and thunderstorms.
.FRIDAY...East winds 20 to 25 knots. Seas 6 to 9 feet, occasionally
to 11 feet. 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. Showers likely with a chance of
thunderstorms.
.SATURDAY...East winds 20 to 25 knots. Seas 5 to 8 feet,
occasionally to 10 feet. A chance of thunderstorms. Showers.
.SATURDAY NIGHT...East winds 20 to 25 knots, diminishing to 15 to
20 knots after midnight. Seas 5 to 7 feet, occasionally to 9 feet. A
chance of thunderstorms. Showers likely, mainly in the evening.

Winds and seas higher in and near thunderstorms.

$$

GMZ550-552-301300-
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-
701 PM CDT Mon Sep 29 2025

.TONIGHT...East winds 5 to 10 knots, becoming northeast after
midnight, then becoming north late. Seas 1 to 2 feet this evening,
then 1 foot or less.
.TUESDAY...North winds 5 to 10 knots. Seas 1 to 2 feet.
.TUESDAY NIGHT...North winds 5 to 10 knots. Seas 1 foot or less.
.WEDNESDAY...North winds 5 to 10 knots, becoming northeast in the
afternoon. Seas 1 foot or less. 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. 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. 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 with gusts up to
25 knots. Seas 2 to 4 feet, occasionally to 5 feet. Showers likely
with a chance of thunderstorms.
.FRIDAY...East winds 20 to 25 knots. Seas 3 to 5 feet, occasionally
to 6 feet. A chance of thunderstorms. Showers likely.
.FRIDAY NIGHT...East winds 20 to 25 knots. Seas 3 to 5 feet,
occasionally to 6 feet. A chance of thunderstorms. Showers likely,
mainly in the evening.
.SATURDAY...East winds 15 to 20 knots. Seas 2 to 4 feet,
occasionally to 5 feet. Showers likely with a chance of
thunderstorms.
.SATURDAY NIGHT...East winds 20 to 25 knots, diminishing to 15 to
20 knots after midnight. Seas 2 to 4 feet, occasionally to 5 feet. A
slight chance of thunderstorms. Showers likely, mainly in the
evening.

Winds and seas higher in and near thunderstorms.

$$

GMZ575-577-301300-
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-
701 PM CDT Mon Sep 29 2025

.TONIGHT...Northeast winds 5 to 10 knots, becoming north after
midnight. Seas around 2 feet.
.TUESDAY...North winds 10 to 15 knots, diminishing to 5 to 10 knots
in the afternoon. Seas around 2 feet. A slight chance of showers in
the morning.
.TUESDAY NIGHT...North winds 5 to 10 knots. Seas around 2 feet. 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. A
chance of showers with a slight chance of thunderstorms.
.WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet. A
chance of showers with a slight chance of thunderstorms.
.THURSDAY...East winds 15 to 20 knots with gusts up to 25 knots.
Seas 3 to 5 feet, occasionally to 6 feet, building to 5 to 7 feet,
occasionally to 9 feet in the afternoon. A chance of thunderstorms.
Showers.
.THURSDAY NIGHT...East winds 20 to 25 knots with gusts up to
30 knots. Seas 6 to 8 feet, occasionally to 10 feet. A chance of
thunderstorms. Showers.
.FRIDAY...East winds 20 to 25 knots. Seas 7 to 9 feet, occasionally
to 11 feet. Showers with a chance of thunderstorms.
.FRIDAY NIGHT...East winds 20 to 25 knots. Seas 6 to 9 feet,
occasionally to 11 feet. Showers with a chance of thunderstorms.
.SATURDAY...East winds 20 to 25 knots. Seas 6 to 9 feet,
occasionally to 11 feet. Showers with a chance of thunderstorms.
.SATURDAY NIGHT...East winds 15 to 20 knots. Seas 5 to 7 feet,
occasionally to 9 feet. A chance of thunderstorms. Showers.

Winds and seas higher in and near thunderstorms.

$$

GMZ570-572-301300-
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-
701 PM CDT Mon Sep 29 2025

.TONIGHT...East winds 10 to 15 knots, diminishing to 5 to 10 knots
late this evening and early morning, then becoming north late. Seas
around 2 feet.
.TUESDAY...North winds 5 to 10 knots. Seas around 2 feet.
.TUESDAY NIGHT...North winds 5 to 10 knots. Seas around 2 feet. A
slight chance of showers after midnight.
.WEDNESDAY...Northeast winds 5 to 10 knots. Seas around 2 feet. A
chance of showers with a slight chance of thunderstorms.
.WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas around 2 feet. 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. 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 with gusts up to
25 knots. Seas 5 to 7 feet, occasionally to 9 feet. Showers with a
chance of thunderstorms.
.FRIDAY...East winds 20 to 25 knots. Seas 5 to 8 feet, occasionally
to 10 feet. Showers with a chance of thunderstorms.
.FRIDAY NIGHT...East winds 20 to 25 knots. Seas 6 to 8 feet,
occasionally to 10 feet. A chance of thunderstorms. Showers.
.SATURDAY...East winds 15 to 20 knots. Seas 5 to 6 feet,
occasionally to 8 feet. A chance of thunderstorms. Showers.
.SATURDAY NIGHT...East winds 15 to 20 knots. Seas 4 to 6 feet,
occasionally to 8 feet. A slight chance of thunderstorms. Showers.

Winds and seas higher in and near thunderstorms.

$$