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

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451
FZUS54 KLIX 281726
CWFLIX

Coastal Waters Forecast
National Weather Service New Orleans LA
1226 PM CDT Thu Aug 28 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-GMZ501-290600-
1226 PM CDT Thu Aug 28 2025

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

The main marine concern during at least the first half of the
forecast period will be the increasing threat for thunderstorms that
could produce locally higher winds and seas. Maybe not much today,
but more certainly Friday into Saturday. Forecast confidence is a
bit lower by late in the weekend, with an approaching cold front.
The current wind forecast would indicate generally offshore flow by
late Sunday afternoon for most or all of the waters. If the front
makes it well into the Gulf early next week, that may justify Small
Craft Exercise Caution headlines by Monday or Tuesday.

$$

GMZ530-290600-
Lake Pontchartrain and Lake Maurepas-
1226 PM CDT Thu Aug 28 2025

.THIS AFTERNOON...Southeast winds around 5 knots. Waves 1 foot or
less. A slight chance of showers and thunderstorms.
.TONIGHT...South winds around 5 knots. Waves 1 foot or less. A
slight chance of showers and thunderstorms in the evening, then a
chance of showers and thunderstorms after midnight.
.FRIDAY...Southwest winds around 5 knots, becoming southeast in the
afternoon. Waves 1 foot or less. A chance of showers and
thunderstorms.
.FRIDAY NIGHT...Southeast winds 5 to 10 knots, becoming southwest
after midnight. Waves 1 foot or less. A chance of thunderstorms. A
chance of showers.
.SATURDAY...Northwest winds around 5 knots, becoming north in the
afternoon. Waves 1 foot or less. Showers likely with a chance of
thunderstorms in the morning, then showers and thunderstorms in the
afternoon.
.SATURDAY NIGHT...Northeast winds around 5 knots. Waves 1 foot or
less. A chance of showers with a slight chance of thunderstorms in
the evening, then a slight chance of showers after midnight.
.SUNDAY...Northeast winds 5 to 10 knots. Waves 1 foot or less, then
around 2 feet in the afternoon. A chance of showers with a slight
chance of thunderstorms in the morning, then a chance of showers and
thunderstorms in the afternoon.
.SUNDAY NIGHT...Northeast winds 5 to 10 knots. Waves around 2 feet.
A slight chance of thunderstorms in the evening. A chance of
showers.
.MONDAY...Northeast winds 5 to 10 knots. Waves around 2 feet. A
chance of showers with a slight chance of thunderstorms in the
morning, then a chance of showers and thunderstorms in the
afternoon.
.MONDAY NIGHT...Northeast winds 5 to 10 knots. Waves around 2 feet.
A slight chance of showers and thunderstorms in the evening.

Winds and waves higher in and near thunderstorms.

$$

GMZ534-290600-
Lake Borgne-
1226 PM CDT Thu Aug 28 2025

.THIS AFTERNOON...Southeast winds around 5 knots. Waves 1 foot or
less. A slight chance of showers and thunderstorms.
.TONIGHT...South winds 5 to 10 knots. Waves 1 foot or less. A slight
chance of showers and thunderstorms in the evening, then a chance of
showers and thunderstorms after midnight.
.FRIDAY...South winds around 5 knots, becoming southeast in the
afternoon. Waves 1 foot or less. A chance of thunderstorms. A chance
of showers.
.FRIDAY NIGHT...South winds 5 to 10 knots. Waves 1 foot or less. A
chance of thunderstorms. A chance of showers.
.SATURDAY...Northwest winds 5 to 10 knots, becoming north in the
afternoon. Waves 1 foot or less. Showers, thunderstorms.
.SATURDAY NIGHT...Northeast winds 5 to 10 knots. Waves 1 foot or
less. A chance of showers. A chance of thunderstorms, mainly in the
evening.
.SUNDAY...Northeast winds around 10 knots. Waves 1 foot or less. A
chance of showers with a slight chance of thunderstorms in the
morning, then a chance of showers and thunderstorms in the
afternoon.
.SUNDAY NIGHT...Northeast winds around 10 knots. Waves around
2 feet. A chance of showers. A chance of thunderstorms, mainly in
the evening.
.MONDAY...Northeast winds around 10 knots. Waves around 2 feet. A
chance of showers and thunderstorms.
.MONDAY NIGHT...Northeast winds around 10 knots. Waves around
2 feet. A slight chance of thunderstorms. A chance of showers,
mainly in the evening.

Winds and waves higher in and near thunderstorms.

$$

GMZ532-290600-
Mississippi Sound-
1226 PM CDT Thu Aug 28 2025

.THIS AFTERNOON...Southeast winds around 5 knots. Waves 1 foot or
less. A slight chance of showers and thunderstorms late.
.TONIGHT...South winds 5 to 10 knots. Waves 1 foot or less. A slight
chance of showers. A slight chance of thunderstorms in the evening,
then a chance of thunderstorms after midnight.
.FRIDAY...East 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.
.FRIDAY NIGHT...South winds 5 to 10 knots. Waves around 2 feet. A
chance of showers and thunderstorms in the evening, then showers and
thunderstorms likely after midnight.
.SATURDAY...Northwest winds 5 to 10 knots, becoming northeast in the
afternoon. Waves around 2 feet in the morning, then 1 foot or less.
Thunderstorms likely. Showers.
.SATURDAY NIGHT...Northeast winds 5 to 10 knots. Waves around
2 feet. A chance of showers and thunderstorms in the evening, then a
chance of showers with a slight chance of thunderstorms after
midnight.
.SUNDAY...Northeast winds around 10 knots. Waves around 2 feet. A
chance of showers with a slight chance of thunderstorms in the
morning, then a chance of showers and thunderstorms in the
afternoon.
.SUNDAY NIGHT...Northeast winds around 10 knots. Waves around
2 feet. A slight chance of thunderstorms. A chance of showers.
.MONDAY...Northeast winds around 10 knots. Waves around 2 feet. A
chance of showers and thunderstorms.
.MONDAY NIGHT...Northeast winds around 10 knots. Waves around
2 feet. A chance of showers. A chance of thunderstorms, mainly in
the evening.

Winds and waves higher in and near thunderstorms.

$$

GMZ536-538-290600-
Chandeleur Sound-Breton Sound-
1226 PM CDT Thu Aug 28 2025

.THIS AFTERNOON...Southeast winds around 5 knots. Waves 1 foot or
less.
.TONIGHT...South winds 5 to 10 knots. Waves 1 foot or less. A slight
chance of showers and thunderstorms after midnight.
.FRIDAY...Southeast winds 5 to 10 knots. Waves 1 foot or less, then
around 2 feet in the afternoon. A chance of showers and
thunderstorms.
.FRIDAY NIGHT...South winds around 10 knots. Waves around 2 feet. A
chance of thunderstorms. A chance of showers in the evening, then
showers likely after midnight.
.SATURDAY...West winds 5 to 10 knots, becoming north in the
afternoon. Waves around 2 feet in the morning, then 1 foot or less.
Showers with thunderstorms likely.
.SATURDAY NIGHT...Northeast winds 5 to 10 knots. Waves around 2 feet
in the evening, then 1 foot or less. A chance of thunderstorms. A
chance of showers in the evening, then showers likely after
midnight.
.SUNDAY...Northeast winds around 10 knots. Waves around 2 feet. A
chance of thunderstorms. Showers likely, mainly in the morning.
.SUNDAY NIGHT...Northeast winds around 10 knots. Waves around
2 feet. A chance of showers and thunderstorms.
.MONDAY...Northeast winds 10 to 15 knots. Waves 2 to 3 feet. A
chance of thunderstorms. Showers likely, mainly in the morning.
.MONDAY NIGHT...Northeast winds around 10 knots. Waves 2 to 3 feet.
A chance of showers and thunderstorms.

Winds and waves higher in and near thunderstorms.

$$

GMZ555-557-290600-
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-
1226 PM CDT Thu Aug 28 2025

.THIS AFTERNOON...East winds around 5 knots. Seas 1 foot or less.
Wave Detail: East 1 foot at 4 seconds.
.TONIGHT...Southeast winds around 5 knots. Seas 1 foot or less. Wave
Detail: Southeast 1 foot at 4 seconds.
.FRIDAY...Southeast winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: Southeast 1 foot at 4 seconds. A chance of showers and
thunderstorms, mainly in the morning.
.FRIDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southeast 2 feet at 4 seconds. A slight chance of showers
and thunderstorms in the evening, then a chance of showers and
thunderstorms after midnight.
.SATURDAY...Southwest winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southwest 1 foot at 3 seconds and east 1 foot at 4 seconds.
Showers, thunderstorms.
.SATURDAY NIGHT...South winds 5 to 10 knots, becoming east after
midnight. Seas 1 foot or less. Wave Detail: East 1 foot at 2 seconds
and southwest 1 foot at 3 seconds. A chance of thunderstorms.
Showers likely.
.SUNDAY...Northeast winds around 10 knots. Seas around 2 feet. Wave
Detail: Northeast 2 feet at 3 seconds. Showers likely with a chance
of thunderstorms.
.SUNDAY NIGHT...Northeast winds around 10 knots. Seas around 2 feet.
Wave Detail: Northeast 2 feet at 4 seconds. A chance of
thunderstorms. A chance of showers in the evening, then showers
likely after midnight.
.MONDAY...Northeast winds around 10 knots. Seas around 2 feet. Wave
Detail: Northeast 2 feet at 4 seconds. Showers likely with a chance
of thunderstorms.
.MONDAY NIGHT...Northeast winds around 10 knots. Seas 2 to 4 feet,
occasionally to 5 feet. Wave Detail: East 4 feet at 7 seconds and
northeast 2 feet at 4 seconds. Showers likely with a chance of
thunderstorms.

Winds and seas higher in and near thunderstorms.

$$

GMZ550-552-290600-
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-
1226 PM CDT Thu Aug 28 2025

.THIS AFTERNOON...Southeast winds 5 to 10 knots. Seas 1 foot or
less. Wave Detail: Southeast 1 foot at 4 seconds.
.TONIGHT...Southeast winds 5 to 10 knots. Seas 1 to 2 feet. Wave
Detail: Southeast 2 feet at 4 seconds.
.FRIDAY...South winds 5 to 10 knots. Seas 1 to 2 feet in the
morning, then 1 foot or less. Wave Detail: Southeast 1 foot at
4 seconds. A slight chance of showers and thunderstorms.
.FRIDAY NIGHT...South winds 5 to 10 knots. Seas 1 to 2 feet. Wave
Detail: Southeast 2 feet at 4 seconds. A slight chance of showers
and thunderstorms in the evening, then a chance of showers and
thunderstorms after midnight.
.SATURDAY...Southwest winds 5 to 10 knots. Seas 1 to 2 feet. Wave
Detail: South 2 feet at 4 seconds. Showers and thunderstorms.
.SATURDAY NIGHT...Northeast winds 5 to 10 knots, becoming east after
midnight. Seas 1 to 2 feet. Wave Detail: Southwest 1 foot at
3 seconds and southeast 1 foot at 4 seconds. A chance of
thunderstorms. A chance of showers in the evening, then showers
likely after midnight.
.SUNDAY...North winds 5 to 10 knots. Seas 1 to 2 feet. Wave Detail:
Northeast 1 foot at 3 seconds and southwest 1 foot at 3 seconds.
Showers likely. A chance of thunderstorms in the morning, then
thunderstorms likely in the afternoon.
.SUNDAY NIGHT...Northeast winds 5 to 10 knots. Seas 1 to 2 feet.
Wave Detail: Northeast 1 foot at 3 seconds. A chance of showers with
a slight chance of thunderstorms in the evening, then showers likely
with a chance of thunderstorms after midnight.
.MONDAY...Northeast winds around 10 knots. Seas around 2 feet. Wave
Detail: Northeast 2 feet at 3 seconds. Showers likely with a chance
of thunderstorms.
.MONDAY NIGHT...Northeast winds around 10 knots. Seas around 2 feet.
Wave Detail: Northeast 2 feet at 3 seconds. A chance of showers with
a slight chance of thunderstorms in the evening, then showers likely
with a chance of thunderstorms after midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ575-577-290600-
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-
1226 PM CDT Thu Aug 28 2025

.THIS AFTERNOON...East winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: East 1 foot at 4 seconds.
.TONIGHT...Southeast winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: East 1 foot at 4 seconds.
.FRIDAY...Southeast winds around 5 knots. Seas 1 foot or less. Wave
Detail: Southeast 1 foot at 4 seconds. A slight chance of showers
and thunderstorms.
.FRIDAY NIGHT...Southeast winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: Southeast 2 feet at 5 seconds and southeast 1 foot at
8 seconds. A slight chance of showers and thunderstorms in the
evening, then a chance of showers and thunderstorms after midnight.
.SATURDAY...Southwest winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: East 2 feet at 4 seconds and south 1 foot at 3 seconds.
Thunderstorms likely. Showers.
.SATURDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: Southwest 1 foot at 3 seconds and southeast 1 foot at
6 seconds. Showers likely with a chance of thunderstorms.
.SUNDAY...North winds around 10 knots. Seas around 2 feet. Wave
Detail: Northeast 2 feet at 4 seconds and southwest 1 foot at
3 seconds. Showers with a chance of thunderstorms.
.SUNDAY NIGHT...Northeast winds around 10 knots. Seas around 2 feet.
Wave Detail: Northeast 2 feet at 4 seconds and west 1 foot at
3 seconds. A chance of thunderstorms. A chance of showers in the
evening, then showers likely after midnight.
.MONDAY...Northeast winds around 10 knots. Seas 2 to 3 feet. Wave
Detail: Northeast 2 feet at 4 seconds. Showers with a chance of
thunderstorms.
.MONDAY NIGHT...Northeast winds around 10 knots. Seas 2 to 4 feet,
occasionally to 5 feet. Wave Detail: East 4 feet at 8 seconds and
northeast 2 feet at 4 seconds. Showers likely. A slight chance of
thunderstorms in the evening, then a chance of thunderstorms after
midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ570-572-290600-
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-
1226 PM CDT Thu Aug 28 2025

.THIS AFTERNOON...East winds around 10 knots. Seas around 2 feet.
Wave Detail: East 2 feet at 5 seconds.
.TONIGHT...Southeast winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southeast 2 feet at 4 seconds.
.FRIDAY...Southeast winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southeast 2 feet at 4 seconds. A slight chance of showers
and thunderstorms.
.FRIDAY NIGHT...South winds around 10 knots. Seas around 2 feet.
Wave Detail: Southeast 2 feet at 5 seconds. A slight chance of
showers and thunderstorms in the evening, then a chance of showers
and thunderstorms after midnight.
.SATURDAY...Southwest winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: South 2 feet at 5 seconds. Showers with thunderstorms
likely.
.SATURDAY NIGHT...Southwest winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: West 1 foot at 3 seconds and southeast 1 foot at
4 seconds. A chance of thunderstorms. A chance of showers in the
evening, then showers after midnight.
.SUNDAY...Northwest winds around 10 knots, becoming north in the
afternoon. Seas around 2 feet. Wave Detail: East 2 feet at 6 seconds
and west 1 foot at 3 seconds. Showers. Thunderstorms likely, mainly
in the morning.
.SUNDAY NIGHT...Northeast 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 in the evening, then showers likely
with a chance of thunderstorms after midnight.
.MONDAY...North winds around 10 knots. Seas 2 to 3 feet. Wave
Detail: North 2 feet at 4 seconds. A chance of thunderstorms.
Showers likely.
.MONDAY NIGHT...Northeast winds around 10 knots. Seas 2 to 3 feet.
Wave Detail: East 3 feet at 8 seconds and northeast 2 feet at
4 seconds. A slight chance of thunderstorms. A chance of showers in
the evening, then showers likely after midnight.

Winds and seas higher in and near thunderstorms.

$$