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 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
488
FZUS54 KLIX 200001
CWFLIX

Coastal Waters Forecast
National Weather Service New Orleans LA
701 PM CDT Tue Aug 19 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-GMZ501-201300-
701 PM CDT Tue Aug 19 2025

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

Hurricane Erin in the Atlantic is help a weak boundary/front slide
toward the Gulf coast over the next few days. This will generally
keep winds on the weaker side but will also aid in daily showers and
thunderstorms. Most of the activity will be typical for this time of
the year with the majority of the storms occuring during the
overnight and early morning hours the next few days. By Thursday
storms may be a little more numerous and impact the coastal waters
through much of the day and night as that front stalls right along
the coast. With storms stronger winds and higher seas should be
expected. Outside winds will generally be less than 10 kts and seas
2 ft or lower will occur.

$$

GMZ530-201300-
Lake Pontchartrain and Lake Maurepas-
701 PM CDT Tue Aug 19 2025

.TONIGHT...Southwest winds around 5 knots, becoming northwest around
5 knots after midnight. Waves 1 foot or less. A chance of showers
and thunderstorms early this evening, then a slight chance of
showers and thunderstorms late this evening.
.WEDNESDAY...North winds around 5 knots, becoming southeast in the
afternoon. Waves 1 foot or less.
.WEDNESDAY NIGHT...South winds around 5 knots, becoming northwest
after midnight. Waves 1 foot or less. A slight chance of showers and
thunderstorms in the evening.
.THURSDAY...Northwest winds around 5 knots, becoming west in the
afternoon. Waves 1 foot or less. Showers and thunderstorms likely in
the afternoon.
.THURSDAY NIGHT...Northwest winds around 5 knots. Waves 1 foot or
less. A chance of showers and thunderstorms in the evening.
.FRIDAY...Northwest winds around 5 knots. Waves 1 foot or less. A
slight chance of showers and thunderstorms in the morning, then
showers and thunderstorms likely in the afternoon.
.FRIDAY NIGHT...West winds around 5 knots. Waves 1 foot or less. A
chance of showers and thunderstorms, mainly in the evening.
.SATURDAY...Northwest winds around 5 knots. Waves 1 foot or less. A
slight chance of showers and thunderstorms in the morning, then a
chance of showers and thunderstorms in the afternoon.
.SATURDAY NIGHT...West winds around 5 knots. Waves 1 foot or less. A
slight chance of showers and thunderstorms.
.SUNDAY...North winds around 5 knots. Waves 1 foot or less. A slight
chance of showers and thunderstorms in the morning, then a chance of
showers and thunderstorms in the afternoon.
.SUNDAY NIGHT...South winds around 5 knots, becoming northwest after
midnight. Waves 1 foot or less.

Winds and waves higher in and near thunderstorms.

$$

GMZ534-201300-
Lake Borgne-
701 PM CDT Tue Aug 19 2025

.TONIGHT...Southeast winds around 5 knots, becoming northwest after
midnight. Waves 1 foot or less. A slight chance of showers and
thunderstorms early this evening.
.WEDNESDAY...Northeast winds around 5 knots, becoming southeast in
the afternoon. Waves 1 foot or less. A slight chance of showers and
thunderstorms in the morning.
.WEDNESDAY NIGHT...South winds around 5 knots, becoming west after
midnight. Waves 1 foot or less. A slight chance of showers and
thunderstorms in the evening.
.THURSDAY...Northwest winds around 5 knots, becoming southwest in
the afternoon. Waves 1 foot or less. A slight chance of showers and
thunderstorms in the morning, then a chance of showers and
thunderstorms in the afternoon.
.THURSDAY NIGHT...Southwest winds around 5 knots. Waves 1 foot or
less. A chance of showers and thunderstorms, mainly in the evening.
.FRIDAY...West winds around 5 knots. Waves 1 foot or less. A chance
of showers and thunderstorms in the morning, then showers and
thunderstorms likely in the afternoon.
.FRIDAY NIGHT...West winds around 5 knots. Waves 1 foot or less. A
chance of showers and thunderstorms.
.SATURDAY...Northwest winds around 5 knots. Waves 1 foot or less. A
chance of showers and thunderstorms in the morning, then showers and
thunderstorms likely in the afternoon.
.SATURDAY NIGHT...Southwest winds around 5 knots. Waves 1 foot or
less. A chance of showers and thunderstorms.
.SUNDAY...North winds 5 to 10 knots, becoming east in the afternoon.
Waves 1 foot or less. A chance of showers and thunderstorms.
.SUNDAY NIGHT...Southwest winds around 5 knots, becoming northwest
after midnight. Waves 1 foot or less. A slight chance of showers and
thunderstorms.

Winds and waves higher in and near thunderstorms.

$$

GMZ532-201300-
Mississippi Sound-
701 PM CDT Tue Aug 19 2025

.TONIGHT...Southeast winds 5 to 10 knots, becoming north late. Waves
1 foot or less. A slight chance of showers and thunderstorms after
midnight.
.WEDNESDAY...Northeast winds around 5 knots, becoming southeast in
the afternoon. Waves 1 foot or less.
.WEDNESDAY NIGHT...Southwest winds 5 to 10 knots, becoming west
after midnight. Waves 1 foot or less. A slight chance of showers and
thunderstorms after midnight.
.THURSDAY...Northwest winds around 5 knots, becoming southwest in
the afternoon. Waves 1 foot or less. A slight chance of showers and
thunderstorms in the morning, then a chance of showers and
thunderstorms in the afternoon.
.THURSDAY NIGHT...Southwest winds 5 to 10 knots. Waves 1 foot or
less. A chance of showers and thunderstorms.
.FRIDAY...Northwest winds around 5 knots, becoming southwest in the
afternoon. Waves 1 foot or less. A chance of showers and
thunderstorms in the morning, then showers and thunderstorms likely
in the afternoon.
.FRIDAY NIGHT...West winds 5 to 10 knots. Waves 1 foot or less. A
chance of showers and thunderstorms.
.SATURDAY...Northwest winds 5 to 10 knots, becoming southwest in the
afternoon. Waves 1 foot or less. A chance of showers and
thunderstorms in the morning, then showers and thunderstorms likely
in the afternoon.
.SATURDAY NIGHT...West winds around 5 knots. Waves 1 foot or less. A
chance of showers and thunderstorms.
.SUNDAY...North winds around 5 knots, becoming southeast in the
afternoon. Waves 1 foot or less. A chance of showers and
thunderstorms.
.SUNDAY NIGHT...Southwest winds 5 to 10 knots, becoming northwest
after midnight. Waves 1 foot or less. A slight chance of showers and
thunderstorms.

Winds and waves higher in and near thunderstorms.

$$

GMZ536-538-201300-
Chandeleur Sound-Breton Sound-
701 PM CDT Tue Aug 19 2025

.TONIGHT...Southeast winds 5 to 10 knots, becoming north late. Waves
1 foot or less. A slight chance of showers and thunderstorms after
midnight.
.WEDNESDAY...Northeast winds 5 to 10 knots, becoming southeast in
the afternoon. Waves 1 foot or less. A slight chance of showers and
thunderstorms in the morning.
.WEDNESDAY NIGHT...South winds around 5 knots, becoming west after
midnight. Waves 1 foot or less. A slight chance of showers and
thunderstorms after midnight.
.THURSDAY...Northwest winds around 5 knots, becoming southwest in
the afternoon. Waves 1 foot or less. A chance of showers and
thunderstorms.
.THURSDAY NIGHT...Southwest winds 5 to 10 knots. Waves 1 foot or
less. A chance of showers and thunderstorms.
.FRIDAY...West winds 5 to 10 knots, becoming southwest in the
afternoon. Waves 1 foot or less. A chance of thunderstorms. Showers
likely, mainly in the morning.
.FRIDAY NIGHT...Southwest winds 5 to 10 knots. Waves 1 foot or less.
A chance of showers and thunderstorms.
.SATURDAY...Northwest winds 5 to 10 knots, becoming west in the
afternoon. Waves 1 foot or less. Showers and thunderstorms likely.
.SATURDAY NIGHT...Southwest winds 5 to 10 knots. Waves 1 foot or
less. A chance of showers and thunderstorms.
.SUNDAY...Northwest winds 5 to 10 knots, becoming east in the
afternoon. Waves 1 foot or less. A chance of thunderstorms. Showers
likely, mainly in the morning.
.SUNDAY NIGHT...Southwest winds 5 to 10 knots, becoming northwest
after midnight. Waves 1 foot or less. A chance of showers and
thunderstorms.

Winds and waves higher in and near thunderstorms.

$$

GMZ555-557-201300-
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 Tue Aug 19 2025

.TONIGHT...East winds 5 to 10 knots, becoming northeast late. Seas
1 foot or less. A slight chance of showers and thunderstorms after
midnight.
.WEDNESDAY...Northeast winds 5 to 10 knots, becoming east in the
afternoon. Seas 1 foot or less. A slight chance of showers and
thunderstorms in the morning.
.WEDNESDAY NIGHT...South winds around 5 knots, becoming west after
midnight. Seas 1 foot or less. A slight chance of showers and
thunderstorms after midnight.
.THURSDAY...Northwest winds around 5 knots, becoming southwest in
the afternoon. Seas 1 foot or less. A chance of showers and
thunderstorms.
.THURSDAY NIGHT...Southwest winds 5 to 10 knots. Seas 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 5 to 10 knots. Seas 1 foot or less. A
chance of thunderstorms. Showers likely, mainly in the morning.
.FRIDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or less.
A chance of thunderstorms. A chance of showers in the evening, then
showers likely after midnight.
.SATURDAY...West winds 5 to 10 knots. Seas 1 foot or less. Showers
and thunderstorms likely, mainly in the morning.
.SATURDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or
less. A chance of thunderstorms. A chance of showers in the evening,
then showers likely after midnight.
.SUNDAY...Northwest winds 5 to 10 knots. Seas 1 foot or less.
Showers and thunderstorms likely, mainly in the morning.
.SUNDAY NIGHT...West winds 5 to 10 knots. Seas 1 foot or less. A
chance of showers and thunderstorms.

Winds and seas higher in and near thunderstorms.

$$

GMZ550-552-201300-
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 Tue Aug 19 2025

.TONIGHT...Northeast winds around 5 knots, becoming north late. Seas
1 foot or less. A slight chance of showers and thunderstorms after
midnight.
.WEDNESDAY...North winds 5 to 10 knots, becoming east in the
afternoon. Seas 1 foot or less. A chance of showers and
thunderstorms, mainly in the morning.
.WEDNESDAY NIGHT...South winds around 5 knots, becoming west after
midnight. Seas 1 foot or less. A slight chance of showers and
thunderstorms after midnight.
.THURSDAY...Northwest winds around 5 knots, becoming southwest in
the afternoon. Seas 1 foot or less. A chance of showers and
thunderstorms.
.THURSDAY NIGHT...Southwest winds around 5 knots. Seas 1 foot or
less. A slight chance of showers and thunderstorms in the evening,
then a chance of showers and thunderstorms after midnight.
.FRIDAY...West winds around 5 knots. Seas 1 foot or less. A chance
of thunderstorms. Showers likely, mainly in the morning.
.FRIDAY NIGHT...Southwest winds around 5 knots. Seas 1 foot or less.
A slight chance of showers and thunderstorms in the evening, then
showers likely with a chance of thunderstorms after midnight.
.SATURDAY...West winds around 5 knots. Seas 1 foot or less. Showers
with thunderstorms likely in the morning, then a chance of showers
and thunderstorms in the afternoon.
.SATURDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or
less. A slight chance of showers and thunderstorms in the evening,
then a chance of showers and thunderstorms after midnight.
.SUNDAY...Northwest winds 5 to 10 knots. Seas 1 foot or less.
Showers and thunderstorms likely, mainly in the morning.
.SUNDAY NIGHT...West winds around 5 knots. Seas 1 foot or less. A
slight chance of showers and thunderstorms in the evening, then a
chance of showers and thunderstorms after midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ575-577-201300-
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 Tue Aug 19 2025

.TONIGHT...East winds around 5 knots. Seas 1 foot or less. A slight
chance of showers and thunderstorms after midnight.
.WEDNESDAY...Northeast winds 5 to 10 knots. Seas 1 foot or less. A
slight chance of showers and thunderstorms in the morning.
.WEDNESDAY NIGHT...Southeast winds around 5 knots, becoming west
after midnight. Seas 1 foot or less. A slight chance of showers and
thunderstorms after midnight.
.THURSDAY...West winds around 5 knots, becoming southwest in the
afternoon. Seas 1 foot or less. A chance of showers and
thunderstorms.
.THURSDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or
less. A slight chance of showers in the evening, then a chance of
showers and thunderstorms after midnight.
.FRIDAY...Southwest winds 5 to 10 knots. Seas 1 foot or less.
Showers likely with a chance of thunderstorms.
.FRIDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or less.
A chance of showers with a slight chance of thunderstorms in the
evening, then showers likely with a chance of thunderstorms after
midnight.
.SATURDAY...West winds 5 to 10 knots. Seas 1 foot or less. A chance
of thunderstorms. Showers.
.SATURDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or
less. A chance of thunderstorms. A chance of showers in the evening,
then showers likely after midnight.
.SUNDAY...West winds 5 to 10 knots. Seas 1 foot or less. Showers
with thunderstorms likely in the morning, then a chance of showers
and thunderstorms in the afternoon.
.SUNDAY NIGHT...West winds 5 to 10 knots. Seas 1 foot or less. A
slight chance of showers and thunderstorms in the evening, then a
chance of showers and thunderstorms after midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ570-572-201300-
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 Tue Aug 19 2025

.TONIGHT...Northeast winds 5 to 10 knots. Seas 1 foot or less. A
slight chance of showers and thunderstorms late.
.WEDNESDAY...Northeast winds 5 to 10 knots. Seas 1 foot or less. A
chance of showers and thunderstorms, mainly in the morning.
.WEDNESDAY NIGHT...Southeast winds around 5 knots, becoming west
after midnight. Seas 1 foot or less. A chance of showers with a
slight chance of thunderstorms after midnight.
.THURSDAY...North winds around 5 knots, becoming southwest in the
afternoon. Seas 1 foot or less. A chance of showers and
thunderstorms.
.THURSDAY NIGHT...Southwest winds around 5 knots. Seas 1 foot or
less. A slight chance of showers in the evening, then a chance of
showers and thunderstorms after midnight.
.FRIDAY...West winds around 5 knots. Seas 1 foot or less. A chance
of thunderstorms. Showers likely, mainly in the morning.
.FRIDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or less.
A slight chance of showers and thunderstorms in the evening, then
showers likely with a chance of thunderstorms after midnight.
.SATURDAY...West winds 5 to 10 knots. Seas 1 foot or less. Showers
with thunderstorms likely in the morning, then a chance of showers
and thunderstorms in the afternoon.
.SATURDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or
less. A slight chance of showers and thunderstorms in the evening,
then a chance of showers and thunderstorms after midnight.
.SUNDAY...West winds 5 to 10 knots. Seas 1 foot or less. A chance of
thunderstorms. Showers likely, mainly in the morning.
.SUNDAY NIGHT...West winds 5 to 10 knots. Seas 1 foot or less. A
slight chance of showers and thunderstorms in the evening, then a
chance of showers and thunderstorms after midnight.

Winds and seas higher in and near thunderstorms.

$$