897
FZUS54 KBRO 110832
CWFBRO

Coastal Waters Forecast for the Lower Texas Coast
National Weather Service Brownsville TX
332 AM CDT Mon Aug 11 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.

GMZ100-112115-
332 AM CDT Mon Aug 11 2025

.SYNOPSIS...Mostly favorable marine conditions prevail into late
week as high pressure over the Gulf continues gentle to moderate
southeasterly and southerly winds with slight to moderate seas.
Daily shower and thunderstorm chances persist, mainly across
offshore waters.

$$

GMZ130-132-135-112115-
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-
332 AM CDT Mon Aug 11 2025

.TODAY...South winds around 5 knots, becoming east this
afternoon. Smooth on the bay, increasing to light chop this
afternoon.
.TONIGHT...Southeast winds around 10 knots, becoming south after
midnight. Light chop on the bay.
.TUESDAY...South winds around 5 knots, becoming east early in the
afternoon, then increasing to 10 to 15 knots late in the
afternoon. Smooth on the bay, increasing to light chop early in
the afternoon, then increasing to a moderate chop late in the
afternoon.
.TUESDAY NIGHT...Southeast winds 10 to 15 knots, becoming south
5 to 10 knots after midnight. Light chop on the bay.
.WEDNESDAY...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.
.WEDNESDAY 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.
.THURSDAY...South winds 5 to 10 knots, becoming southeast 10 to
15 knots in the afternoon. A moderate chop on the bay.
.THURSDAY NIGHT...Southeast winds 10 to 15 knots. A moderate chop
on the bay.
.FRIDAY...Southeast winds 10 to 15 knots. A moderate chop on the
bay. A slight chance of thunderstorms. A slight chance of
showers.
.FRIDAY NIGHT...Southeast winds 10 to 15 knots, becoming south
early in the morning. A moderate chop on the bay.

Winds and waves higher in and near thunderstorms.

$$

GMZ150-155-112115-
Gulf waters from Port Mansfield to the Rio Grande out 20 nm-
Gulf waters from Baffin Bay to Port Mansfield out 20 nm-
332 AM CDT Mon Aug 11 2025

.TODAY...South winds 5 to 10 knots, becoming east this afternoon.
Seas 1 to 2 feet. Wave Detail: Southeast 1 foot at 5 seconds.
.TONIGHT...Southeast winds around 10 knots, becoming south after
midnight. Seas 1 to 2 feet. Wave Detail: East 1 foot at
4 seconds.
.TUESDAY...South winds 5 to 10 knots, becoming southeast in the
afternoon. Seas 1 to 2 feet. Wave Detail: Southeast 1 foot at
5 seconds.
.TUESDAY NIGHT...Southeast winds around 10 knots, becoming south
after midnight. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet
at 4 seconds.
.WEDNESDAY...South winds 5 to 10 knots, becoming southeast in the
afternoon. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at
5 seconds.
.WEDNESDAY NIGHT...Southeast winds 10 to 15 knots, becoming south
early in the morning. Seas 2 to 3 feet. Wave Detail: Southeast
3 feet at 6 seconds.
.THURSDAY...Southeast winds 10 to 15 knots. Seas 2 to 3 feet.
.THURSDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to
4 feet.
.FRIDAY...Southeast winds 10 to 15 knots. Seas 3 to 4 feet. A
slight chance of showers and thunderstorms until late afternoon.
.FRIDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to 4 feet.

Winds and seas higher in and near thunderstorms.

$$

GMZ170-175-112115-
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-
332 AM CDT Mon Aug 11 2025

.TODAY...South winds 5 to 10 knots, becoming east this afternoon.
Seas 1 to 2 feet. Wave Detail: South 1 foot at 3 seconds and east
1 foot at 5 seconds.
.TONIGHT...Southeast winds 5 to 10 knots, becoming south after
midnight. Seas 1 to 2 feet. Wave Detail: Southeast 1 foot at
4 seconds.
.TUESDAY...South winds 5 to 10 knots, becoming southeast in the
afternoon. Seas 1 to 2 feet. Wave Detail: Southeast 1 foot at
5 seconds. A slight chance of showers in the morning.
.TUESDAY NIGHT...Southeast winds around 10 knots, becoming south
after midnight. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet
at 4 seconds. A slight chance of showers after midnight. A slight
chance of showers and thunderstorms early in the morning.
.WEDNESDAY...South winds 5 to 10 knots, becoming southeast in the
afternoon. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at
5 seconds. A slight chance of thunderstorms until late afternoon.
A slight chance of showers.
.WEDNESDAY NIGHT...Southeast winds around 10 knots, becoming
south early in the morning. Seas 3 to 4 feet. Wave Detail:
Southeast 3 feet at 6 seconds.
.THURSDAY...South winds around 10 knots. Seas 2 to 3 feet. A
slight chance of showers and thunderstorms in the morning.
.THURSDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to
4 feet. A slight chance of showers and thunderstorms after
midnight.
.FRIDAY...Southeast winds 10 to 15 knots. Seas 3 to 4 feet. A
slight chance of showers and thunderstorms until late afternoon.
.FRIDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to 5 feet.

Winds and seas higher in and near thunderstorms.

$$