714
FZUS54 KBRO 221805
CWFBRO

Coastal Waters Forecast for the Lower Texas Coast
National Weather Service Brownsville TX
105 PM CDT Fri Aug 22 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.

GMZ100-230715-
105 PM CDT Fri Aug 22 2025

.SYNOPSIS...Generally favorable conditions will prevail with
slight seas and light winds. However, locally enhanced winds and
seas will be possible within any showers or thunderstorms that
develop over the Gulf waters each day. Expect daily low to medium
(20-60 percent) rain chances through early next week.

$$

GMZ130-132-135-230715-
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-
105 PM CDT Fri Aug 22 2025

.TONIGHT...Southeast winds 5 to 10 knots, becoming south after
midnight. Light chop on the bay. A slight chance of showers and
thunderstorms early this evening. A chance of showers and
thunderstorms after midnight.
.SATURDAY...Southwest winds around 5 knots, becoming northwest
around 5 knots late in the morning, then becoming east in the
afternoon. Smooth on the bay, increasing to light chop in the
afternoon. A chance of showers and thunderstorms.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots, becoming
southwest early in the morning. Light chop on the bay,
diminishing to smooth after midnight. A chance of thunderstorms.
A chance of showers in the evening, then showers likely after
midnight.
.SUNDAY...West winds around 5 knots, becoming north late in the
morning, then becoming east in the afternoon. Smooth on the bay,
increasing to light chop in the afternoon. Showers likely with a
chance of thunderstorms.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots, becoming south
after midnight. Light chop on the bay. Showers likely in the
evening. A chance of thunderstorms. A chance of showers after
midnight.
.MONDAY...Southeast winds around 5 knots, becoming 5 to 10 knots
in the afternoon. Light chop on the bay. A chance of showers. A
slight chance of thunderstorms in the morning, then a chance of
thunderstorms in the afternoon.
.MONDAY NIGHT...Southeast winds 5 to 10 knots, becoming south
early in the morning. Light chop on the bay. A chance of showers
with a slight chance of thunderstorms early in the evening. A
slight chance of showers in the late evening and overnight. A
slight chance of thunderstorms after midnight.
.TUESDAY...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 slight chance of
showers and thunderstorms in the morning, then a chance of
showers and thunderstorms in the afternoon.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Light chop on the
bay. A chance of showers and thunderstorms early in the evening.
A slight chance of showers after midnight.
.WEDNESDAY...Southeast winds 5 to 10 knots. Light chop on the
bay. A chance of showers. A chance of thunderstorms until late
afternoon, then a slight chance of thunderstorms late in the
afternoon.
.WEDNESDAY NIGHT...Southeast winds 5 to 10 knots. Light chop on
the bay. A chance of showers with a slight chance of
thunderstorms early in the evening. A slight chance of showers
after midnight.

Winds and waves higher in and near thunderstorms.

$$

GMZ150-155-230715-
Gulf waters from Port Mansfield to the Rio Grande out 20 nm-
Gulf waters from Baffin Bay to Port Mansfield out 20 nm-
105 PM CDT Fri Aug 22 2025

.TONIGHT...Southeast winds 5 to 10 knots, becoming south after
midnight. Seas 1 to 2 feet. Wave Detail: Southeast 1 foot at
2 seconds. A slight chance of showers and thunderstorms after
midnight. A chance of showers and thunderstorms early this
morning.
.SATURDAY...Southwest winds around 5 knots, becoming east late in
the afternoon. Seas 1 to 2 feet. Wave Detail: Southeast 1 foot at
3 seconds. A chance of showers and thunderstorms.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots, becoming south
early in the morning. Seas 1 to 2 feet. Wave Detail: East 1 foot
at 3 seconds. A chance of thunderstorms. A chance of showers in
the evening, then showers likely after midnight.
.SUNDAY...Southwest winds around 5 knots, becoming northwest late
in the morning, then becoming east in the afternoon. Seas 1 to
2 feet. Wave Detail: Southeast 1 foot at 4 seconds. Showers
likely with a chance of thunderstorms.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots, becoming south
after midnight. Seas 1 to 2 feet. Wave Detail: Southeast 1 foot
at 5 seconds. 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.
.MONDAY...Southeast winds around 5 knots, becoming 5 to 10 knots
in the afternoon. Seas 1 to 2 feet. Wave Detail: Southeast 2 feet
at 5 seconds. Showers likely with a slight chance of
thunderstorms in the morning, then a chance of showers and
thunderstorms in the afternoon.
.MONDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3 feet.
A chance of showers with a slight chance of thunderstorms.
.TUESDAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. A
slight chance of showers and thunderstorms.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. 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...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. A
chance of showers and thunderstorms until late afternoon, then a
slight chance of showers and thunderstorms late in the afternoon.
.WEDNESDAY NIGHT...Southeast winds around 10 knots, becoming 5 to
10 knots 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.

Winds and seas higher in and near thunderstorms.

$$

GMZ170-175-230715-
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-
105 PM CDT Fri Aug 22 2025

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

Winds and seas higher in and near thunderstorms.

$$