269
FZUS54 KBRO 301728
CWFBRO

Coastal Waters Forecast for the Lower Texas Coast
National Weather Service Brownsville TX
1228 PM CDT Sat Aug 30 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.

GMZ100-310615-
1228 PM CDT Sat Aug 30 2025

.SYNOPSIS...Mostly light to moderate southerly to southeasterly
winds and low to moderate seas are forecast along the Lower Texas
Coast through the period. The passage of a weak cold front early
next week will produce a significant wind shift, as the winds will
turn towards the north for a short period of time. However, Small
Craft Should Exercise Caution and Small Craft Advisory are not
likely to be needed.

$$

GMZ130-132-135-310615-
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-
1228 PM CDT Sat Aug 30 2025

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

Winds and waves higher in and near thunderstorms.

$$

GMZ150-155-310615-
Gulf waters from Port Mansfield to the Rio Grande out 20 nm-
Gulf waters from Baffin Bay to Port Mansfield out 20 nm-
1228 PM CDT Sat Aug 30 2025

.TONIGHT...Southeast winds around 10 knots, becoming south early
this morning. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at
5 seconds and east 1 foot at 8 seconds.
.SUNDAY...South winds 5 to 10 knots, becoming southeast in the
afternoon. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at
4 seconds and east 1 foot at 8 seconds.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots, becoming south
early in the morning. Seas 2 to 3 feet. Wave Detail: Southeast
2 feet at 4 seconds and east 1 foot at 8 seconds. A slight chance
of showers after midnight. A slight chance of showers and
thunderstorms early in the morning.
.MONDAY...South winds around 5 knots, becoming east in the
afternoon. Seas 1 to 2 feet. Wave Detail: Northeast 1 foot at
2 seconds and southeast 1 foot at 5 seconds. A chance of showers.
A slight chance of thunderstorms in the morning, then a chance of
thunderstorms in the afternoon.
.MONDAY NIGHT...East winds 5 to 10 knots, becoming around 5 knots
after midnight, then becoming west early in the morning. Seas
2 to 3 feet. Wave Detail: East 1 foot at 4 seconds and east
1 foot at 8 seconds. A slight chance of thunderstorms in the
evening. A chance of showers. A chance of thunderstorms after
midnight.
.TUESDAY...Northwest winds 5 to 10 knots, becoming northeast in
the afternoon. Seas 2 to 3 feet. Wave Detail: Northeast 2 feet at
4 seconds and southeast 1 foot at 5 seconds. A chance of showers
and thunderstorms until late afternoon, then a slight chance of
showers and thunderstorms late in the afternoon.
.TUESDAY NIGHT...East winds 5 to 10 knots, becoming southeast
after midnight, then becoming southwest early in the morning.
Seas 2 to 3 feet. A slight chance of showers and thunderstorms
early in the evening. A slight chance of showers and
thunderstorms after midnight.
.WEDNESDAY...Northwest winds 5 to 10 knots, becoming northeast
late in the afternoon. Seas 2 to 3 feet. A slight chance of
showers and thunderstorms early in the morning.
.WEDNESDAY NIGHT...East winds 5 to 10 knots, becoming south early
in the morning. Seas 2 to 3 feet.
.THURSDAY...Southwest winds around 5 knots, becoming west late in
the morning, then becoming east in the afternoon. Seas 1 to
2 feet.
.THURSDAY NIGHT...East winds around 10 knots, becoming southeast
after midnight. Seas 1 to 2 feet. A slight chance of showers
after midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ170-175-310615-
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-
1228 PM CDT Sat Aug 30 2025

.TONIGHT...Southeast winds 5 to 10 knots, becoming south early
this morning. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at
5 seconds and east 1 foot at 8 seconds.
.SUNDAY...South winds around 10 knots, diminishing to around
5 knots in the afternoon, then becoming southeast late in the
afternoon. Seas 2 to 3 feet. Wave Detail: South 2 feet at
4 seconds and east 1 foot at 8 seconds.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots, becoming south
early in the morning. Seas 2 to 3 feet. Wave Detail: Southeast
2 feet at 4 seconds and east 1 foot at 8 seconds. A slight chance
of showers and thunderstorms after midnight.
.MONDAY...South winds around 5 knots, becoming northeast in the
afternoon. Seas 1 to 2 feet. Wave Detail: East 1 foot at
4 seconds and east 1 foot at 8 seconds. A chance of showers. A
slight chance of thunderstorms early in the morning, then a
chance of thunderstorms in the afternoon.
.MONDAY NIGHT...East winds 5 to 10 knots, becoming southeast
after midnight, then becoming west early in the morning. Seas
2 to 3 feet. Wave Detail: East 1 foot at 5 seconds and east
1 foot at 8 seconds. A chance of showers with a slight chance of
thunderstorms early in the evening. A slight chance of showers
late in the evening, then showers likely with a chance of
thunderstorms after midnight.
.TUESDAY...Northwest winds 5 to 10 knots, becoming north in the
afternoon. Seas 2 to 3 feet. Wave Detail: North 2 feet at
4 seconds and southeast 1 foot at 7 seconds. Showers likely with
a chance of thunderstorms until late afternoon, then a slight
chance of showers and thunderstorms late in the afternoon.
.TUESDAY NIGHT...Northeast winds 5 to 10 knots, becoming east
after midnight, then becoming northwest early in the morning.
Seas 2 to 3 feet. A slight chance of showers and thunderstorms
early in the evening. A slight chance of showers and
thunderstorms after midnight.
.WEDNESDAY...Northwest winds 5 to 10 knots, becoming north in the
afternoon. Seas 2 to 3 feet. A slight chance of showers and
thunderstorms in the morning.
.WEDNESDAY NIGHT...Northeast winds around 10 knots, becoming east
late in the evening, then becoming southeast after midnight,
becoming south early in the morning. Seas 2 to 3 feet.
.THURSDAY...West winds around 5 knots, becoming northeast late in
the afternoon. Seas 1 to 2 feet. A slight chance of showers in
the morning.
.THURSDAY NIGHT...East winds around 10 knots, becoming southeast
after midnight. Seas 1 to 2 feet. A slight chance of showers
after midnight.

Winds and seas higher in and near thunderstorms.

$$