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

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814
FZUS54 KLIX 311751
CWFLIX

Coastal Waters Forecast
National Weather Service New Orleans LA
1251 PM CDT Thu Jul 31 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-GMZ501-010615-
1251 PM CDT Thu Jul 31 2025

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

Outside of convective impacts, conditions will remain benign
across the coastal waters. Expect to see an increase in shower and
thunderstorm activity beginning Friday, with a fairly typical
diurnal ebb and flow. A few strong storms will be possible each
day, and could result in gusty winds, waterspouts, and locally
higher waves/seas.

$$

GMZ530-010615-
Lake Pontchartrain and Lake Maurepas-
1251 PM CDT Thu Jul 31 2025

.REST OF TODAY...West winds around 5 knots. Waves 1 foot or less. A
slight chance of showers and thunderstorms early this afternoon,
then a chance of showers and thunderstorms late.
.TONIGHT...Southwest winds around 5 knots. Waves 1 foot or less. A
chance of showers and thunderstorms 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...Southwest winds around 5 knots, becoming northwest
after midnight. 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
chance of showers and thunderstorms in the morning, then showers and
thunderstorms in the afternoon.
.SATURDAY NIGHT...North winds around 5 knots. Waves 1 foot or less.
A chance of showers and thunderstorms, mainly in the evening.
.SUNDAY...North winds around 5 knots. Waves 1 foot or less. A chance
of showers and thunderstorms.
.SUNDAY NIGHT...Northeast winds around 5 knots. Waves 1 foot or
less. A slight chance of showers and thunderstorms.
.MONDAY...Northeast winds around 5 knots. Waves 1 foot or less. A
chance of showers and thunderstorms.
.MONDAY NIGHT...Southeast winds around 5 knots, becoming northwest
after midnight. Waves 1 foot or less. A chance of showers and
thunderstorms, mainly in the evening.

Winds and waves higher in and near thunderstorms.

$$

GMZ534-010615-
Lake Borgne-
1251 PM CDT Thu Jul 31 2025

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

Winds and waves higher in and near thunderstorms.

$$

GMZ532-010615-
Mississippi Sound-
1251 PM CDT Thu Jul 31 2025

.REST OF TODAY...Southwest winds 5 to 10 knots. Waves around 2 feet.
A slight chance of showers and thunderstorms early this afternoon,
then a chance of showers and thunderstorms late.
.TONIGHT...Southwest winds 5 to 10 knots. Waves around 2 feet. A
slight chance of showers and thunderstorms in the evening.
.FRIDAY...West winds 5 to 10 knots, becoming southwest in the
afternoon. Waves 1 foot or less, then around 2 feet in the
afternoon. A chance of showers and thunderstorms.
.FRIDAY NIGHT...Southwest winds 5 to 10 knots, becoming west after
midnight. Waves around 2 feet in the evening, then 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, then around 2 feet in the
afternoon. A chance of showers and thunderstorms in the morning,
then showers and thunderstorms in the afternoon.
.SATURDAY NIGHT...North winds 5 to 10 knots. Waves around 2 feet. A
chance of thunderstorms. Showers likely, mainly in the evening.
.SUNDAY...North winds 5 to 10 knots, becoming east in the afternoon.
Waves around 2 feet in the morning, then 1 foot or less. Showers and
thunderstorms likely.
.SUNDAY NIGHT...Northeast winds 5 to 10 knots. Waves 1 foot or less.
A chance of showers and thunderstorms.
.MONDAY...Northeast winds 5 to 10 knots, becoming east in the
afternoon. Waves 1 foot or less, then around 2 feet in the
afternoon. Showers likely with a chance of thunderstorms in the
morning, then showers and thunderstorms likely in the afternoon.
.MONDAY NIGHT...South winds 5 to 10 knots, becoming southwest after
midnight. 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.

Winds and waves higher in and near thunderstorms.

$$

GMZ536-538-010615-
Chandeleur Sound-Breton Sound-
1251 PM CDT Thu Jul 31 2025

.REST OF TODAY...Southwest winds 5 to 10 knots. Waves around 2 feet.
A slight chance of showers and thunderstorms.
.TONIGHT...Southwest winds around 10 knots. Waves around 2 feet. A
slight chance of showers and thunderstorms after midnight.
.FRIDAY...West winds 5 to 10 knots, becoming southwest in the
afternoon. Waves around 2 feet. A chance of showers and
thunderstorms.
.FRIDAY NIGHT...West winds around 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.
.SATURDAY...West winds 5 to 10 knots. Waves 1 foot or less. Showers,
thunderstorms.
.SATURDAY NIGHT...Northwest winds 5 to 10 knots. Waves 1 foot or
less. Showers likely. Thunderstorms likely, mainly in the evening.
.SUNDAY...North winds 5 to 10 knots. Waves 1 foot or less. Showers
and thunderstorms likely.
.SUNDAY NIGHT...Northeast winds 5 to 10 knots. Waves 1 foot or less.
A chance of showers and thunderstorms in the evening, then showers
and thunderstorms likely after midnight.
.MONDAY...North winds 5 to 10 knots, becoming east in the afternoon.
Waves 1 foot or less. Showers and thunderstorms likely.
.MONDAY NIGHT...South winds 5 to 10 knots. Waves 1 foot or less. A
chance of thunderstorms. A chance of showers in the evening, then
showers likely after midnight.

Winds and waves higher in and near thunderstorms.

$$

GMZ555-557-010615-
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-
1251 PM CDT Thu Jul 31 2025

.REST OF TODAY...Southwest winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: South 1 foot at 3 seconds. A chance of showers and
thunderstorms early this afternoon, then a slight chance of showers
and thunderstorms late.
.TONIGHT...Southwest winds around 10 knots. Seas around 2 feet. Wave
Detail: Southwest 1 foot at 3 seconds. A slight chance of showers
and thunderstorms after midnight.
.FRIDAY...Southwest winds 5 to 10 knots. Seas around 2 feet in the
morning, then 1 foot or less. Wave Detail: West 2 feet at 3 seconds,
becoming southwest 1 foot at 3 seconds. A chance of showers and
thunderstorms.
.FRIDAY NIGHT...Southwest winds around 10 knots. Seas 1 foot or
less. Wave Detail: Southwest 1 foot at 3 seconds. 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. Wave
Detail: West 1 foot at 3 seconds. Showers with thunderstorms likely
in the morning, then showers likely with a chance of thunderstorms
in the afternoon.
.SATURDAY NIGHT...West winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: West 1 foot at 3 seconds. Showers likely with a chance
of thunderstorms in the evening, then showers with thunderstorms
likely after midnight.
.SUNDAY...Northwest winds 5 to 10 knots. Seas around 2 feet in the
morning, then 1 foot or less. Wave Detail: Northwest 1 foot at
3 seconds and southeast 1 foot at 5 seconds. Thunderstorms likely.
Showers.
.SUNDAY NIGHT...Northwest winds 5 to 10 knots, becoming south after
midnight. Seas 1 foot or less. Wave Detail: West 1 foot at 2 seconds
and southeast 1 foot at 5 seconds. A chance of showers and
thunderstorms in the evening, then showers and thunderstorms likely
after midnight.
.MONDAY...West winds 5 to 10 knots, becoming south in the afternoon.
Seas 1 foot or less. Wave Detail: South 1 foot at 4 seconds. Showers
and thunderstorms.
.MONDAY NIGHT...South winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: South 1 foot at 4 seconds. A chance of showers and
thunderstorms in the evening, then showers and thunderstorms likely
after midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ550-552-010615-
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-
1251 PM CDT Thu Jul 31 2025

.REST OF TODAY...Southwest winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: Southwest 1 foot at 3 seconds. A chance of showers and
thunderstorms early this afternoon, then a slight chance of showers
and thunderstorms late.
.TONIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: Southwest 1 foot at 3 seconds. A slight chance of showers
and thunderstorms in the evening, then a chance of showers and
thunderstorms after midnight.
.FRIDAY...West winds around 10 knots. Seas around 2 feet in the
morning, then 1 foot or less. Wave Detail: Southwest 1 foot at
3 seconds. A chance of showers and thunderstorms.
.FRIDAY NIGHT...West winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: Southwest 1 foot at 3 seconds. 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. Wave
Detail: West 1 foot at 3 seconds. Thunderstorms likely. Showers.
.SATURDAY NIGHT...Northwest winds 5 to 10 knots. Seas 1 foot or
less. Wave Detail: West 1 foot at 3 seconds. Showers likely with a
chance of thunderstorms in the evening, then showers with
thunderstorms likely after midnight.
.SUNDAY...Northwest winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: Northwest 1 foot at 3 seconds. Thunderstorms likely.
Showers.
.SUNDAY NIGHT...Northwest winds around 5 knots, becoming southwest
after midnight. Seas 1 foot or less. Wave Detail: West 1 foot at
4 seconds. A chance of showers and thunderstorms in the evening,
then showers and thunderstorms likely after midnight.
.MONDAY...West winds around 5 knots. Seas 1 foot or less. Wave
Detail: West 1 foot at 3 seconds. Thunderstorms likely. Showers.
.MONDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: Southwest 1 foot at 3 seconds. A chance of
thunderstorms. A chance of showers in the evening, then showers
likely after midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ575-577-010615-
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-
1251 PM CDT Thu Jul 31 2025

.REST OF TODAY...Southwest winds around 10 knots. Seas around
2 feet. Wave Detail: Southwest 1 foot at 4 seconds. A chance of
showers and thunderstorms early this afternoon, then a slight chance
of showers and thunderstorms late.
.TONIGHT...Southwest winds around 10 knots. Seas around 2 feet. Wave
Detail: Southwest 2 feet at 3 seconds. A slight chance of showers
and thunderstorms after midnight.
.FRIDAY...Southwest winds around 10 knots. Seas around 2 feet in the
morning, then 1 foot or less. Wave Detail: Southwest 2 feet at
4 seconds, becoming southwest 1 foot at 4 seconds. A chance of
showers and thunderstorms.
.FRIDAY NIGHT...Southwest winds around 10 knots. Seas around 2 feet.
Wave Detail: Southwest 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...West winds around 10 knots. Seas around 2 feet. Wave
Detail: West 2 feet at 4 seconds. A chance of thunderstorms.
Showers.
.SATURDAY NIGHT...West winds around 10 knots. Seas around 2 feet.
Wave Detail: West 2 feet at 4 seconds and southeast 1 foot at
5 seconds. A chance of thunderstorms. A chance of showers in the
evening, then showers after midnight.
.SUNDAY...West winds 5 to 10 knots. Seas around 2 feet. Wave Detail:
West 2 feet at 4 seconds and southeast 1 foot at 5 seconds.
Thunderstorms likely. Showers.
.SUNDAY NIGHT...Southwest winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: West 1 foot at 4 seconds and southeast 1 foot at
6 seconds. A chance of showers and thunderstorms in the evening,
then showers and thunderstorms likely after midnight.
.MONDAY...Southwest winds 5 to 10 knots. Seas around 2 feet in the
morning, then 1 foot or less. Wave Detail: South 1 foot at
5 seconds, becoming south 1 foot at 4 seconds. Showers and
thunderstorms.
.MONDAY NIGHT...South winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: South 1 foot at 4 seconds. A chance of showers and
thunderstorms in the evening, then showers and thunderstorms likely
after midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ570-572-010615-
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-
1251 PM CDT Thu Jul 31 2025

.REST OF TODAY...Southwest winds around 10 knots. Seas 1 foot or
less. Wave Detail: West 1 foot at 3 seconds. A chance of showers and
thunderstorms early this afternoon, then a slight chance of showers
and thunderstorms late.
.TONIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: Southwest 1 foot at 3 seconds. A slight chance of showers
and thunderstorms after midnight.
.FRIDAY...West winds around 10 knots. Seas around 2 feet in the
morning, then 1 foot or less. Wave Detail: West 1 foot at 3 seconds.
A chance of showers and thunderstorms.
.FRIDAY NIGHT...West winds around 10 knots. Seas 1 foot or less.
Wave Detail: West 1 foot at 4 seconds. A slight chance of showers
and thunderstorms in the evening, then a chance of showers and
thunderstorms after midnight.
.SATURDAY...West winds around 10 knots. Seas around 2 feet. Wave
Detail: West 2 feet at 4 seconds. A chance of thunderstorms.
Showers.
.SATURDAY NIGHT...West winds around 10 knots. Seas around 2 feet.
Wave Detail: West 2 feet at 4 seconds. A chance of thunderstorms. A
chance of showers in the evening, then showers likely after
midnight.
.SUNDAY...West winds 5 to 10 knots. Seas around 2 feet. Wave Detail:
West 2 feet at 4 seconds and southeast 1 foot at 5 seconds.
Thunderstorms likely. Showers.
.SUNDAY NIGHT...Northwest winds 5 to 10 knots, becoming southwest
after midnight. Seas around 2 feet in the evening, then 1 foot or
less. Wave Detail: West 1 foot at 4 seconds and southeast 1 foot at
5 seconds, becoming west 1 foot at 4 seconds and southeast 1 foot at
6 seconds. A chance of thunderstorms. A chance of showers in the
evening, then showers likely after midnight.
.MONDAY...West winds around 5 knots. Seas 1 foot or less. Wave
Detail: West 1 foot at 3 seconds and southeast 1 foot at 5 seconds.
Thunderstorms likely. Showers.
.MONDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: South 1 foot at 4 seconds. A chance of thunderstorms. A
chance of showers in the evening, then showers likely after
midnight.

Winds and seas higher in and near thunderstorms.

$$