040
FZUS54 KBRO 030511
CWFBRO

Coastal Waters Forecast for the Lower Texas Coast
National Weather Service Brownsville TX
1211 AM CDT Wed Sep 3 2025

Lower Texas coastal waters from Baffin Bay to the mouth of the
Rio Grande out 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.

GMZ100-031815-
1211 AM CDT Wed Sep 3 2025

.SYNOPSIS...Favorable marine conditions are expected to continue
through the period. Light to moderate winds will likely continue
to support slight seas along the Lower Texas Coast. Showers and
thunderstorms will be possible over the waters through Wednesday
morning, with additional rain chances returning this weekend.

$$

GMZ130-132-135-031815-
Laguna Madre from the Port of Brownsville to the Arroyo Colorado-
Laguna Madre from the Arroyo Colorado To 5 NM north of Port
Mansfield TX-
Laguna Madre from 5 nm north of Port Mansfield to Baffin Bay TX-
1211 AM CDT Wed Sep 3 2025

.TODAY...Northwest winds around 5 knots, becoming north late this
morning, then becoming northeast early this afternoon, becoming
east late this afternoon. Smooth on the bay, increasing to light
chop this afternoon.
.TONIGHT...East winds 5 to 10 knots, becoming south early in the
morning. Light chop on the bay, diminishing to smooth early in
the morning.
.THURSDAY...Southwest winds around 5 knots, becoming east in the
afternoon. Smooth on the bay, increasing to light chop in the
afternoon.
.THURSDAY NIGHT...Southeast winds 10 to 15 knots, becoming south
5 to 10 knots after midnight. A moderate chop on the bay,
diminishing to light chop early in the morning.
.FRIDAY...South winds 5 to 10 knots, becoming southeast 10 to
15 knots in the afternoon. A moderate chop on the bay.
.FRIDAY NIGHT...Southeast winds 10 to 15 knots, becoming around
10 knots after midnight. A moderate chop on the bay. A slight
chance of showers in the evening, then a chance of showers after
midnight.
.SATURDAY...Southeast winds 5 to 10 knots, increasing to 10 to
15 knots in the afternoon. A moderate chop on the bay. A chance
of showers. A slight chance of thunderstorms in the morning, then
a chance of thunderstorms in the afternoon.
.SATURDAY NIGHT...Southeast winds 10 to 15 knots, becoming south
5 to 10 knots early in the morning. A moderate chop on the bay,
diminishing to light chop early in the morning. A chance of
showers.
.SUNDAY...Southeast winds 5 to 10 knots, becoming around 10 knots
late in the afternoon. Light chop on the bay. Showers likely with
a chance of thunderstorms.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots, becoming south
early in the morning. Light chop on the bay. A chance of
thunderstorms.

Winds and waves higher in and near thunderstorms.

$$

GMZ150-155-031815-
Gulf waters from Port Mansfield to the Rio Grande out 20 nm-
Gulf waters from Baffin Bay to Port Mansfield out 20 nm-
1211 AM CDT Wed Sep 3 2025

.TODAY...Northwest winds 5 to 10 knots, becoming northeast late
this afternoon. Seas 2 to 3 feet. Wave Detail: North 2 feet at
3 seconds and east 1 foot at 8 seconds. A slight chance of
showers early this morning.
.TONIGHT...East winds 5 to 10 knots, becoming south early in the
morning. Seas 2 to 3 feet. Wave Detail: East 2 feet at 4 seconds
and southeast 1 foot at 7 seconds.
.THURSDAY...Southwest winds around 5 knots, becoming east early
in the afternoon, then increasing to 5 to 10 knots late in the
afternoon. Seas 1 to 2 feet. Wave Detail: East 1 foot at
6 seconds.
.THURSDAY NIGHT...Southeast winds 10 to 15 knots, becoming around
10 knots after midnight. Seas 2 to 3 feet. Wave Detail: East
2 feet at 5 seconds.
.FRIDAY...South winds 5 to 10 knots, becoming southeast 10 to
15 knots late in the afternoon. Seas 1 to 2 feet. Wave Detail:
Southeast 2 feet at 4 seconds. A slight chance of showers in the
afternoon.
.FRIDAY NIGHT...Southeast winds 10 to 15 knots, becoming south
early in the morning. Seas 2 to 3 feet. Wave Detail: Southeast
2 feet at 4 seconds. A slight chance of showers in the evening,
then a chance of showers with a slight chance of thunderstorms
after midnight.
.SATURDAY...Southeast winds 5 to 10 knots, becoming around
10 knots late in the afternoon. Seas 2 to 3 feet. A chance of
thunderstorms. Showers likely until late afternoon, then a chance
of showers late in the afternoon.
.SATURDAY NIGHT...Southeast winds around 10 knots, becoming south
early in the morning. Seas 2 to 3 feet. A chance of showers in
the evening. A chance of thunderstorms. Showers likely after
midnight.
.SUNDAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet.
Showers likely with a chance of thunderstorms.
.SUNDAY NIGHT...Southeast winds around 10 knots, becoming south
early in the morning. Seas 2 to 4 feet. A chance of
thunderstorms.

Winds and seas higher in and near thunderstorms.

$$

GMZ170-175-031815-
Gulf waters from Port Mansfield to the Rio Grande extending from
20 to 60 nm-
Gulf waters from Baffin Bay to Port Mansfield extending from
20 to 60 nm-
1211 AM CDT Wed Sep 3 2025

.TODAY...North winds 5 to 10 knots, becoming northeast this
afternoon. Seas 2 to 3 feet. Wave Detail: Northeast 2 feet at
4 seconds and east 1 foot at 8 seconds. A slight chance of
thunderstorms this morning. A slight chance of showers.
.TONIGHT...East winds 5 to 10 knots, becoming south early in the
morning. Seas 2 to 3 feet. Wave Detail: Northeast 2 feet at
4 seconds and east 1 foot at 7 seconds.
.THURSDAY...Southwest winds around 5 knots, becoming west around
5 knots late in the morning, then becoming northeast early in the
afternoon, becoming east around 5 knots late in the afternoon.
Seas 1 to 2 feet. Wave Detail: East 1 foot at 6 seconds.
.THURSDAY NIGHT...Southeast winds 5 to 10 knots, becoming around
10 knots after midnight. Seas 2 to 3 feet. Wave Detail: East
2 feet at 4 seconds.
.FRIDAY...South winds 5 to 10 knots, becoming southeast late in
the afternoon. Seas 2 to 3 feet. Wave Detail: East 2 feet at
5 seconds. A slight chance of showers.
.FRIDAY NIGHT...Southeast winds 10 to 15 knots, becoming around
10 knots after midnight. Seas 2 to 3 feet. Wave Detail: Southeast
2 feet at 4 seconds. A chance of showers in the evening, then
showers likely with a slight chance of thunderstorms after
midnight.
.SATURDAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet.
Showers likely with a chance of thunderstorms.
.SATURDAY NIGHT...Southeast winds around 10 knots, becoming south
early in the morning. Seas 2 to 3 feet. Showers likely with a
chance of thunderstorms early in the evening, then a chance of
showers with a slight chance of thunderstorms late in the
evening. Showers likely with a chance of thunderstorms after
midnight.
.SUNDAY...Southeast winds 5 to 10 knots. Seas 2 to 4 feet. A
chance of thunderstorms. Showers.
.SUNDAY NIGHT...Southeast winds around 10 knots, becoming south
early in the morning. Seas 3 to 4 feet. A chance of
thunderstorms. Showers likely.

Winds and seas higher in and near thunderstorms.

$$