020
FZUS54 KBRO 240538
CWFBRO

Coastal Waters Forecast for the Lower Texas Coast
National Weather Service Brownsville TX
1238 AM CDT Sun Aug 24 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.

GMZ100-241815-
1238 AM CDT Sun Aug 24 2025

.SYNOPSIS...High pressure over the western Gulf will produce
generally light southerly to southeasterly winds and low seas
along the Lower Texas Coast through the forecast. Showers and
thunderstorms are expected for the next several days and could
result in locally elevated winds and seas.

$$

GMZ130-132-135-241815-
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-
1238 AM CDT Sun Aug 24 2025

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

Winds and waves higher in and near thunderstorms.

$$

GMZ150-155-241815-
Gulf waters from Port Mansfield to the Rio Grande out 20 nm-
Gulf waters from Baffin Bay to Port Mansfield out 20 nm-
1238 AM CDT Sun Aug 24 2025

.TODAY...Northwest winds around 5 knots, becoming northeast late
this afternoon. Seas 1 to 2 feet. Wave Detail: South 1 foot at
3 seconds and east 1 foot at 3 seconds. A chance of showers early
this morning, then a chance of showers and thunderstorms this
afternoon.
.TONIGHT...East winds 5 to 10 knots, becoming southwest early in
the morning. Seas 1 to 2 feet. Wave Detail: Southeast 1 foot at
4 seconds. A slight chance of thunderstorms in the evening. A
chance of showers. A chance of thunderstorms after midnight.
.MONDAY...West winds around 5 knots, becoming southeast in the
afternoon. Seas 1 to 2 feet. Wave Detail: East 2 feet at
4 seconds. A chance of showers and thunderstorms.
.MONDAY NIGHT...Southeast winds around 10 knots, becoming south
early in the morning. Seas 2 to 3 feet. Wave Detail: Southeast
2 feet at 6 seconds. A chance of thunderstorms in the evening. A
chance of showers. A slight chance of thunderstorms after
midnight.
.TUESDAY...South winds 5 to 10 knots, becoming southeast in the
afternoon. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at
7 seconds. A chance of showers.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3 feet.
Wave Detail: Southeast 3 feet at 7 seconds. A slight chance of
showers. A slight chance of thunderstorms early in the evening. 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, 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.
.THURSDAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. A
slight chance of showers and thunderstorms until late afternoon.
.THURSDAY NIGHT...Southeast winds around 10 knots, becoming south
early in the morning. Seas 2 to 3 feet.

Winds and seas higher in and near thunderstorms.

$$

GMZ170-175-241815-
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-
1238 AM CDT Sun Aug 24 2025

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

Winds and seas higher in and near thunderstorms.

$$