070
FZUS54 KBRO 021745
CWFBRO

Coastal Waters Forecast for the Lower Texas Coast
National Weather Service Brownsville TX
1245 PM CDT Tue Sep 2 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.

GMZ100-030600-
1245 PM CDT Tue Sep 2 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.

$$

GMZ130-132-135-030600-
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-
1245 PM CDT Tue Sep 2 2025

.REST OF TODAY...Northeast winds 5 to 10 knots. Light chop on the
bay. A chance of showers and thunderstorms.
.TONIGHT...East winds 5 to 10 knots, diminishing to around
5 knots after midnight, then becoming southwest early in the
morning. Light chop on the bay, diminishing to smooth after
midnight. A slight chance of showers. A slight chance of
thunderstorms early in the evening. A slight chance of
thunderstorms after midnight.
.WEDNESDAY...Northwest winds around 5 knots, becoming north late
in the morning, then becoming northeast early in the afternoon,
becoming east late in the afternoon. Smooth on the bay,
increasing to light chop in the afternoon. A slight chance of
showers early in the morning.
.WEDNESDAY NIGHT...Southeast 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 around 10 knots, becoming 5 to
10 knots after midnight. Light chop on the bay.
.FRIDAY...South winds 5 to 10 knots, becoming southeast early in
the afternoon, then increasing to 10 to 15 knots late in the
afternoon. Light chop on the bay, increasing to a moderate chop
late in the afternoon.
.FRIDAY NIGHT...Southeast winds 10 to 15 knots, becoming south
early in the morning. A moderate chop on the bay, diminishing to
light chop early in the morning. 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, increasing to 10 to
15 knots late in the afternoon. Light chop on the bay, increasing
to a moderate chop late in the afternoon. A chance of showers and
thunderstorms.
.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. A chance of thunderstorms early in the evening, then a
slight chance of thunderstorms in the late evening and overnight.

Winds and waves higher in and near thunderstorms.

$$

GMZ150-155-030600-
Gulf waters from Port Mansfield to the Rio Grande out 20 nm-
Gulf waters from Baffin Bay to Port Mansfield out 20 nm-
1245 PM CDT Tue Sep 2 2025

.REST OF TODAY...North winds 5 to 10 knots, becoming northeast
late this afternoon. Seas 1 to 2 feet. Wave Detail: North 2 feet
at 3 seconds and southeast 1 foot at 4 seconds. A chance of
showers and thunderstorms.
.TONIGHT...East winds 5 to 10 knots, becoming around 5 knots
after midnight, then becoming north early in the morning. Seas
2 to 3 feet. Wave Detail: Northeast 2 feet at 4 seconds and
southeast 1 foot at 8 seconds. A slight chance of showers in the
evening. A slight chance of thunderstorms. A chance of showers
after midnight.
.WEDNESDAY...Northwest winds 5 to 10 knots, becoming northeast
late in the afternoon. Seas 2 to 3 feet. Wave Detail: North
2 feet at 4 seconds and east 1 foot at 8 seconds. A slight chance
of showers and thunderstorms early in the morning, then a slight
chance of showers late in the morning.
.WEDNESDAY NIGHT...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. A slight chance of
showers early in the morning.
.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 around 10 knots. Seas 2 to
3 feet. Wave Detail: East 2 feet at 5 seconds.
.FRIDAY...Southeast winds 5 to 10 knots, becoming around 10 knots
late in the afternoon. Seas 2 to 3 feet. A slight chance of
showers.
.FRIDAY NIGHT...Southeast winds 10 to 15 knots, becoming around
10 knots early in the morning. Seas 2 to 3 feet. 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. 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.

Winds and seas higher in and near thunderstorms.

$$

GMZ170-175-030600-
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-
1245 PM CDT Tue Sep 2 2025

.REST OF TODAY...North winds around 10 knots. Seas 2 to 3 feet.
Wave Detail: North 2 feet at 4 seconds and east 1 foot at
8 seconds. A chance of showers and thunderstorms.
.TONIGHT...Northeast winds 5 to 10 knots, becoming north early in
the morning. Seas 2 to 3 feet. Wave Detail: North 2 feet at
4 seconds and east 1 foot at 8 seconds. A slight chance of
showers in the evening. A slight chance of thunderstorms. A
chance of showers after midnight.
.WEDNESDAY...North winds 5 to 10 knots, becoming northeast in the
afternoon. Seas 2 to 3 feet. Wave Detail: Northeast 2 feet at
4 seconds and east 1 foot at 8 seconds. A chance of showers early
in the morning. A slight chance of thunderstorms in the morning.
A slight chance of showers in the afternoon.
.WEDNESDAY NIGHT...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. A slight chance of
showers in the late evening and overnight.
.THURSDAY...Southwest winds around 5 knots, becoming northwest
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 around 10 knots. Seas 2 to
3 feet. Wave Detail: East 2 feet at 5 seconds. A slight chance of
showers after midnight.
.FRIDAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. A
slight chance of showers.
.FRIDAY NIGHT...Southeast winds 10 to 15 knots, becoming around
10 knots early in the morning. Seas 2 to 3 feet. 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. 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.

Winds and seas higher in and near thunderstorms.

$$