307
FZUS54 KBRO 031759
CWFBRO

Coastal Waters Forecast for the Lower Texas Coast
National Weather Service Brownsville TX
1259 PM CDT Sun Aug 3 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.

GMZ100-040615-
1259 PM CDT Sun Aug 3 2025

.SYNOPSIS...Favorable marine conditions prevail this week as high
pressure over the Gulf continues to result in mainly gentle
southeasterly to southerly winds and slight seas, though moderate
winds are possible across the Laguna Madre each afternoon and
early evening hours. There will be low, yet non-zero probability
(10-30%) of showers and thunderstorms across all lower Texas
coastal waters at times this week.

$$

GMZ130-132-135-040615-
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-
1259 PM CDT Sun Aug 3 2025

.TONIGHT...Southeast winds 10 to 15 knots becoming south 5 to
10 knots after midnight. A moderate chop on the bay becoming
light chop after midnight.
.MONDAY...South winds 5 to 10 knots becoming southeast 10 to
15 knots in the afternoon. Light chop on the bay becoming a
moderate chop in the afternoon.
.MONDAY NIGHT...Southeast winds 10 to 15 knots becoming south
5 to 10 knots after midnight. A moderate chop on the bay becoming
light chop after midnight.
.TUESDAY...Southeast winds around 5 knots increasing to 5 to
10 knots in the afternoon. Smooth on the bay becoming light chop
in the afternoon. A slight chance of showers and thunderstorms.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Light chop on the
bay.
.WEDNESDAY...Southeast winds around 5 knots becoming 5 to
10 knots in the afternoon. Smooth on the bay becoming light chop
in the afternoon. A slight chance of showers and thunderstorms.
.WEDNESDAY NIGHT...Southeast winds 5 to 10 knots. Light chop on
the bay.
.THURSDAY...South winds 5 to 10 knots becoming southeast 10 to
15 knots in the afternoon. Light chop on the bay becoming a
moderate chop in the afternoon.
.THURSDAY NIGHT...Southeast winds 10 to 15 knots becoming south
5 to 10 knots after midnight. A moderate chop on the bay becoming
light chop after midnight.
.FRIDAY...South winds 5 to 10 knots becoming southeast 10 to
15 knots in the afternoon. Light chop on the bay becoming a
moderate chop in the afternoon.
.FRIDAY NIGHT...Southeast winds 10 to 15 knots. A moderate chop
on the bay.

Winds and waves higher in and near thunderstorms.

$$

GMZ150-155-040615-
Gulf waters from Port Mansfield to the Rio Grande out 20 nm-
Gulf waters from Baffin Bay to Port Mansfield out 20 nm-
1259 PM CDT Sun Aug 3 2025

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

Winds and seas higher in and near thunderstorms.

$$

GMZ170-175-040615-
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-
1259 PM CDT Sun Aug 3 2025

.TONIGHT...Southeast winds 5 to 10 knots becoming south after
midnight. Seas 1 to 2 feet. Wave Detail: Southeast 1 foot at
4 seconds and east 1 foot at 7 seconds.
.MONDAY...South winds 5 to 10 knots becoming southeast in the
afternoon. Seas 1 to 2 feet. Wave Detail: South 1 foot at
4 seconds and east 1 foot at 7 seconds. A slight chance of
showers and thunderstorms in the afternoon.
.MONDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 to 2 feet.
Wave Detail: Southeast 1 foot at 4 seconds. A slight chance of
showers and thunderstorms after midnight.
.TUESDAY...South winds around 5 knots becoming southeast in the
afternoon. Seas 1 to 2 feet. Wave Detail: Southeast 1 foot at
3 seconds. A chance of showers and thunderstorms, mainly in the
morning.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 to 2 feet.
Wave Detail: Southeast 1 foot at 3 seconds.
.WEDNESDAY...Southeast winds 5 to 10 knots. Seas 1 to 2 feet.
Wave Detail: Southeast 2 feet at 5 seconds. A chance of showers
and thunderstorms, mainly in the morning.
.WEDNESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to
3 feet.
.THURSDAY...South winds 5 to 10 knots. Seas 2 to 3 feet. A slight
chance of showers and thunderstorms in the morning.
.THURSDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to
3 feet.
.FRIDAY...South winds 5 to 10 knots. Seas 2 to 3 feet. A slight
chance of showers and thunderstorms in the morning.
.FRIDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to 3 feet.

Winds and seas higher in and near thunderstorms.

$$