Coastal Waters Forecast
Issued by NWS Brownsville, TX

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FZUS54 KBRO 030532
CWFBRO

Coastal Waters Forecast for the Lower Texas Coast
National Weather Service Brownsville TX
1232 AM 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.

GMZ100-031830-
1232 AM CDT Sun Aug 3 2025

.SYNOPSIS...Favorable marine conditions prevail into 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 is an increased probability of showers and
thunderstorms across all lower Texas coastal waters on Tuesday.

$$

GMZ130-132-135-031830-
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-
1232 AM CDT Sun Aug 3 2025

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

Winds and waves higher in and near thunderstorms.

$$

GMZ150-155-031830-
Gulf waters from Port Mansfield to the Rio Grande out 20 nm-
Gulf waters from Baffin Bay to Port Mansfield out 20 nm-
1232 AM CDT Sun Aug 3 2025

.TODAY...South winds 5 to 10 knots, becoming southeast this
afternoon. Seas 1 to 2 feet. Wave Detail: South 1 foot at
4 seconds.
.TONIGHT...Southeast winds around 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 around 10 knots, becoming south
early in the morning. 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 until
late afternoon.
.TUESDAY NIGHT...Southeast winds around 10 knots, becoming south
early in the morning. Seas 1 to 2 feet. Wave Detail: Southeast
1 foot at 4 seconds.
.WEDNESDAY...Southeast winds 5 to 10 knots. Seas 1 to 2 feet.
.WEDNESDAY NIGHT...Southeast winds around 10 knots, becoming
south early in the morning. Seas 2 to 3 feet.
.THURSDAY...South winds 5 to 10 knots, becoming southeast late in
the afternoon. Seas 2 to 3 feet.
.THURSDAY NIGHT...Southeast winds 10 to 15 knots, becoming south
early in the morning. Seas 2 to 3 feet.

Winds and seas higher in and near thunderstorms.

$$

GMZ170-175-031830-
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-
1232 AM CDT Sun Aug 3 2025

.TODAY...South winds 5 to 10 knots, becoming southeast late this
afternoon. Seas 1 to 2 feet. Wave Detail: South 1 foot at
4 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 and east 1 foot at 7 seconds.
.MONDAY...South winds 5 to 10 knots, becoming southeast late 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.
.MONDAY NIGHT...Southeast winds 5 to 10 knots, becoming south
early in the morning. 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: South 1 foot at
4 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 1 to 2 feet.
Wave Detail: Southeast 1 foot at 4 seconds. A slight chance of
showers early in the evening.
.WEDNESDAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. A
slight chance of showers and thunderstorms.
.WEDNESDAY NIGHT...Southeast winds 5 to 10 knots, becoming south
early in the morning. Seas 2 to 3 feet.
.THURSDAY...South winds 5 to 10 knots. Seas 2 to 3 feet. A slight
chance of showers and thunderstorms until late afternoon.
.THURSDAY NIGHT...Southeast winds 5 to 10 knots, becoming south
early in the morning. Seas 2 to 3 feet.

Winds and seas higher in and near thunderstorms.

$$