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

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FZUS54 KLIX 182031
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Coastal Waters Forecast
National Weather Service New Orleans LA
331 PM CDT Fri Apr 18 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-GMZ501-190900-
331 PM CDT Fri Apr 18 2025

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

An onshore flow pattern will be in place through much of next week.
Winds will also remain elevated through Sunday as a low pressure
system passes to the north of the waters. Seas will also increase to
up to 6 to 7 feet in the outer Gulf waters as a combination of wind
waves and swell creates hazardous boating conditions. However, the
protected sounds and lakes will see better conditions over the
weekend as winds and seas remain lower. Conditions will gradually
improve on Monday and Tuesday as winds fall below 15 knots.

$$

GMZ530-190900-
Lake Pontchartrain and Lake Maurepas-
331 PM CDT Fri Apr 18 2025

.TONIGHT...Southeast winds 10 to 15 knots. Waves around 2 feet.
.SATURDAY...Southeast winds 10 to 15 knots with gusts up to
25 knots. Waves 2 to 4 feet.
.SATURDAY NIGHT...Southeast winds 10 to 15 knots with gusts up to
20 knots. Waves 2 to 3 feet.
.SUNDAY...Southeast winds 10 to 15 knots with gusts up to 20 knots.
Waves around 3 feet.
.SUNDAY NIGHT...Southeast winds 10 to 15 knots with gusts up to
20 knots. Waves 2 to 3 feet. A slight chance of showers and
thunderstorms after midnight.
.MONDAY...South 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.
.MONDAY NIGHT...South winds 5 to 10 knots. Waves 1 foot or less. A
slight chance of showers and thunderstorms.
.TUESDAY...Southeast winds around 5 knots. Waves 1 foot or less. A
chance of showers with a slight chance of thunderstorms in the
morning, then showers likely with a chance of thunderstorms in the
afternoon.
.TUESDAY NIGHT...Southeast winds around 5 knots. Waves 1 foot or
less.
.WEDNESDAY...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 morning, then a chance of showers and
thunderstorms in the afternoon.
.WEDNESDAY NIGHT...Southeast winds 5 to 10 knots. Waves 1 to 2 feet.

Winds and waves higher in and near thunderstorms.

$$

GMZ534-190900-
Lake Borgne-
331 PM CDT Fri Apr 18 2025

.TONIGHT...Southeast winds around 10 knots. Waves around 2 feet.
.SATURDAY...Southeast winds 10 to 15 knots, increasing to 15 to
20 knots in the afternoon. Waves 2 to 3 feet.
.SATURDAY NIGHT...Southeast winds 10 to 15 knots with gusts up to
20 knots. Waves 2 to 3 feet.
.SUNDAY...Southeast winds around 15 knots with gusts up to 20 knots.
Waves around 3 feet.
.SUNDAY NIGHT...Southeast winds 10 to 15 knots with gusts up to
20 knots. Waves 2 to 3 feet. A slight chance of showers and
thunderstorms after midnight.
.MONDAY...Southeast winds around 10 knots. Waves around 2 feet. A
chance of showers. A slight chance of thunderstorms in the morning,
then a chance of thunderstorms in the afternoon.
.MONDAY NIGHT...South winds 5 to 10 knots. Waves 1 foot or less. A
slight chance of thunderstorms. A slight chance of showers in the
evening, then a chance of showers after midnight.
.TUESDAY...Southeast winds 5 to 10 knots. Waves 1 foot or less. A
chance of thunderstorms. A chance of showers in the morning, then
showers likely in the afternoon.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Waves 1 foot or
less.
.WEDNESDAY...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 morning, then a chance of showers and
thunderstorms in the afternoon.
.WEDNESDAY NIGHT...Southeast winds 5 to 10 knots. Waves around
2 feet.

Winds and waves higher in and near thunderstorms.

$$

GMZ532-190900-
Mississippi Sound-
331 PM CDT Fri Apr 18 2025

.TONIGHT...Southeast winds 10 to 15 knots. Waves 2 to 3 feet.
.SATURDAY...Southeast winds 10 to 15 knots with gusts up to
25 knots. Waves around 3 feet.
.SATURDAY NIGHT...Southeast winds 10 to 15 knots with gusts up to
20 knots. Waves 2 to 3 feet.
.SUNDAY...Southeast winds around 15 knots with gusts up to 25 knots.
Waves 3 to 4 feet.
.SUNDAY NIGHT...Southeast winds 10 to 15 knots with gusts up to
25 knots. Waves 2 to 4 feet. A slight chance of showers after
midnight.
.MONDAY...Southeast winds around 10 knots. Waves around 2 feet. A
chance of showers with a slight chance of thunderstorms.
.MONDAY NIGHT...Southeast winds 5 to 10 knots. Waves around 2 feet
in the evening, then 1 foot or less. A slight chance of
thunderstorms. A slight chance of showers in the evening, then a
chance of showers after midnight.
.TUESDAY...South winds 5 to 10 knots. Waves 1 foot or less, then
around 2 feet in the afternoon. A chance of thunderstorms. A chance
of showers in the morning, then showers likely in the afternoon.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Waves 1 to 2 feet in
the evening, then 1 foot or less.
.WEDNESDAY...Southeast winds 5 to 10 knots. Waves 1 to 2 feet. A
slight chance of showers and thunderstorms in the morning, then a
chance of showers and thunderstorms in the afternoon.
.WEDNESDAY NIGHT...Southeast winds 5 to 10 knots. Waves around
2 feet.

Winds and waves higher in and near thunderstorms.

$$

GMZ536-538-190900-
Chandeleur Sound-Breton Sound-
331 PM CDT Fri Apr 18 2025

.TONIGHT...Southeast winds 10 to 15 knots. Waves around 2 feet.
.SATURDAY...Southeast winds 10 to 15 knots with gusts up to
25 knots. Waves around 2 feet.
.SATURDAY NIGHT...Southeast winds 10 to 15 knots with gusts up to
20 knots. Waves around 2 feet.
.SUNDAY...Southeast winds around 15 knots with gusts up to 25 knots.
Waves 2 to 3 feet.
.SUNDAY NIGHT...Southeast winds 10 to 15 knots with gusts up to
25 knots. Waves around 2 feet. A slight chance of showers after
midnight.
.MONDAY...Southeast winds around 10 knots. Waves 1 to 2 feet. A
chance of showers with a slight chance of thunderstorms.
.MONDAY NIGHT...Southeast winds 5 to 10 knots. Waves 1 foot or less.
A slight chance of thunderstorms. A slight chance of showers in the
evening, then a chance of showers after midnight.
.TUESDAY...South winds 5 to 10 knots. Waves 1 foot or less. A chance
of showers and thunderstorms.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Waves 1 foot or
less.
.WEDNESDAY...Southeast winds 5 to 10 knots. Waves 1 foot or less,
then 1 to 2 feet in the afternoon. A slight chance of showers and
thunderstorms.
.WEDNESDAY NIGHT...Southeast winds around 10 knots. Waves 1 to
2 feet.

Winds and waves higher in and near thunderstorms.

$$

GMZ555-557-190900-
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-
331 PM CDT Fri Apr 18 2025

.TONIGHT...Southeast winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 3 feet at 5 seconds.
.SATURDAY...Southeast winds around 15 knots with gusts up to
25 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail:
Southeast 4 feet at 6 seconds.
.SATURDAY NIGHT...Southeast winds 10 to 15 knots with gusts up to
25 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail:
Southeast 6 feet at 7 seconds.
.SUNDAY...Southeast winds around 15 knots with gusts up to 25 knots.
Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: Southeast
6 feet at 8 seconds.
.SUNDAY NIGHT...Southeast winds 10 to 15 knots with gusts up to
20 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail:
Southeast 6 feet at 9 seconds. A slight chance of showers after
midnight.
.MONDAY...Southeast winds around 10 knots. Seas 3 to 5 feet,
occasionally to 6 feet. Wave Detail: Southeast 5 feet at 8 seconds.
A chance of showers with a slight chance of thunderstorms.
.MONDAY NIGHT...Southeast winds 5 to 10 knots. Seas 3 to 5 feet,
occasionally to 6 feet. Wave Detail: Southeast 4 feet at 8 seconds.
A slight chance of thunderstorms. A slight chance of showers in the
evening, then a chance of showers after midnight.
.TUESDAY...Southeast winds 5 to 10 knots. Seas 2 to 4 feet,
occasionally to 5 feet. Wave Detail: Southeast 4 feet at 8 seconds.
A chance of showers and thunderstorms.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3 feet.
Wave Detail: Southeast 3 feet at 7 seconds.
.WEDNESDAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 3 feet at 7 seconds. A slight chance of showers
and thunderstorms.
.WEDNESDAY NIGHT...Southeast winds around 10 knots. Seas 2 to
3 feet.

Winds and seas higher in and near thunderstorms.

$$

GMZ550-552-190900-
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-
331 PM CDT Fri Apr 18 2025

...SMALL CRAFT EXERCISE CAUTION IN EFFECT FROM LATE TONIGHT THROUGH
SATURDAY EVENING...

.TONIGHT...Southeast winds 10 to 15 knots. Gusts up to 25 knots late
this evening and overnight. Seas 2 to 4 feet, occasionally to
5 feet. Wave Detail: South 3 feet at 6 seconds.
.SATURDAY...Southeast winds 15 to 20 knots with gusts up to
30 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail:
Southeast 4 feet at 7 seconds.
.SATURDAY NIGHT...Southeast winds 15 to 20 knots with gusts up to
25 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail:
Southeast 5 feet at 8 seconds.
.SUNDAY...Southeast winds 15 to 20 knots with gusts up to 25 knots.
Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: Southeast
5 feet at 8 seconds.
.SUNDAY NIGHT...Southeast winds 10 to 15 knots with gusts up to
20 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail:
Southeast 5 feet at 8 seconds. A slight chance of showers after
midnight.
.MONDAY...Southeast winds 5 to 10 knots. Seas 2 to 4 feet,
occasionally to 5 feet. Wave Detail: Southeast 4 feet at 9 seconds
and south 2 feet at 7 seconds. A chance of showers with a slight
chance of thunderstorms.
.MONDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3 feet.
Wave Detail: South 3 feet at 7 seconds. A slight chance of showers
and thunderstorms.
.TUESDAY...Southeast winds 5 to 10 knots. Seas 2 to 4 feet,
occasionally to 5 feet. Wave Detail: South 3 feet at 7 seconds. A
chance of showers. A slight chance of thunderstorms in the morning,
then a chance of thunderstorms in the afternoon.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: South 2 feet at 7 seconds.
.WEDNESDAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: South 3 feet at 6 seconds. A slight chance of showers and
thunderstorms.
.WEDNESDAY NIGHT...Southeast winds around 10 knots. Seas 2 to
3 feet.

Winds and seas higher in and near thunderstorms.

$$

GMZ575-577-190900-
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-
331 PM CDT Fri Apr 18 2025

.TONIGHT...Southeast winds 10 to 15 knots with gusts up to 20 knots.
Seas around 3 feet. Wave Detail: South 3 feet at 6 seconds.
.SATURDAY...Southeast winds 15 to 20 knots with gusts up to
25 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail:
South 6 feet at 7 seconds.
.SATURDAY NIGHT...Southeast winds around 15 knots with gusts up to
25 knots. Seas 5 to 6 feet, occasionally to 8 feet. Wave Detail:
Southeast 6 feet at 8 seconds.
.SUNDAY...Southeast winds 15 to 20 knots with gusts up to 25 knots.
Seas 5 to 6 feet, occasionally to 8 feet. Wave Detail: Southeast
6 feet at 8 seconds and southwest 1 foot at 8 seconds.
.SUNDAY NIGHT...Southeast winds 10 to 15 knots with gusts up to
20 knots. Seas around 6 feet, occasionally to 8 feet. Wave Detail:
Southeast 6 feet at 9 seconds and southwest 1 foot at 6 seconds. A
slight chance of showers. A slight chance of thunderstorms after
midnight.
.MONDAY...Southeast winds around 10 knots. Seas 4 to 6 feet,
occasionally to 8 feet. Wave Detail: South 5 feet at 7 seconds. A
slight chance of showers in the morning, then a chance of showers
with a slight chance of thunderstorms in the afternoon.
.MONDAY NIGHT...Southeast winds around 10 knots. Seas 4 to 5 feet,
occasionally to 6 feet. Wave Detail: South 5 feet at 7 seconds. A
slight chance of thunderstorms. A slight chance of showers in the
evening, then a chance of showers after midnight.
.TUESDAY...Southeast winds 5 to 10 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Wave Detail: South 4 feet at 7 seconds. A
chance of showers and thunderstorms, mainly in the morning.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Wave Detail: South 3 feet at 7 seconds.
.WEDNESDAY...Southeast winds around 10 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Wave Detail: South 3 feet at 7 seconds. A
slight chance of showers and thunderstorms in the morning.
.WEDNESDAY NIGHT...Southeast winds around 10 knots. Seas 3 to
4 feet, occasionally to 5 feet.

Winds and seas higher in and near thunderstorms.

$$

GMZ570-572-190900-
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-
331 PM CDT Fri Apr 18 2025

...SMALL CRAFT EXERCISE CAUTION IN EFFECT FROM LATE TONIGHT THROUGH
SATURDAY EVENING...

.TONIGHT...Southeast winds 10 to 15 knots, increasing to 15 to
20 knots late. Seas 3 to 5 feet, occasionally to 6 feet. Wave
Detail: Southeast 5 feet at 6 seconds.
.SATURDAY...Southeast winds 15 to 20 knots with gusts up to
30 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail:
Southeast 6 feet at 7 seconds.
.SATURDAY NIGHT...Southeast winds 15 to 20 knots with gusts up to
30 knots. Seas around 6 feet, occasionally to 8 feet. Wave Detail:
Southeast 6 feet at 8 seconds and south 2 feet at 8 seconds.
.SUNDAY...Southeast winds 15 to 20 knots. Gusts up to 30 knots in
the morning. Seas 5 to 6 feet, occasionally to 8 feet. Wave Detail:
Southeast 6 feet at 8 seconds and south 2 feet at 8 seconds.
.SUNDAY NIGHT...Southeast winds 10 to 15 knots with gusts up to
20 knots. Seas 5 to 6 feet, occasionally to 8 feet. Wave Detail:
Southeast 6 feet at 9 seconds and south 2 feet at 7 seconds. A
slight chance of showers and thunderstorms after midnight.
.MONDAY...Southeast winds around 10 knots. Seas 4 to 6 feet,
occasionally to 8 feet. Wave Detail: Southeast 5 feet at 9 seconds
and south 2 feet at 7 seconds. A chance of showers with a slight
chance of thunderstorms.
.MONDAY NIGHT...Southeast winds 5 to 10 knots. Seas 4 to 5 feet,
occasionally to 6 feet. Wave Detail: Southeast 4 feet at 8 seconds
and south 2 feet at 7 seconds. A slight chance of showers and
thunderstorms.
.TUESDAY...Southeast winds 5 to 10 knots. Seas 4 to 5 feet,
occasionally to 6 feet. Wave Detail: Southeast 4 feet at 8 seconds
and south 2 feet at 7 seconds. A slight chance of thunderstorms. A
chance of showers, mainly in the morning.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Wave Detail: South 4 feet at 7 seconds.
.WEDNESDAY...Southeast winds 10 to 15 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Wave Detail: South 3 feet at 7 seconds. A
slight chance of showers and thunderstorms in the morning.
.WEDNESDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to 4 feet,
occasionally to 5 feet.

Winds and seas higher in and near thunderstorms.

$$