206
FZUS54 KBRO 211746
CWFBRO

Coastal Waters Forecast for the Lower Texas Coast
National Weather Service Brownsville TX
1146 AM CST Fri Nov 21 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.

GMZ100-220630-
1146 AM CST Fri Nov 21 2025

.SYNOPSIS...Generally favorable marine conditions are expected to
continue Saturday. Adverse conditions will likely develop Sunday
evening into Monday. Generally favorable conditions are forecast
to return Tuesday.

$$

GMZ130-132-135-220630-
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-
1146 AM CST Fri Nov 21 2025

.TONIGHT...Southeast winds 10 to 15 knots, becoming south 5 to
10 knots after midnight. Light chop on the bay. A slight chance
of showers and thunderstorms after midnight.
.SATURDAY...Southeast winds around 5 knots, becoming east in the
afternoon. Light chop on the bay. Showers likely in the morning.
A chance of thunderstorms. A chance of showers in the afternoon.
.SATURDAY NIGHT...East winds around 10 knots, becoming southeast
after midnight. Light chop on the bay. A chance of showers with a
slight chance of thunderstorms.
.SUNDAY...Southeast winds 10 to 15 knots. A moderate chop on the
bay. A slight chance of showers and thunderstorms early in the
morning, then a slight chance of showers late in the morning.
.SUNDAY NIGHT...Southeast winds 15 to 20 knots. Choppy on the
bay.
.MONDAY...South winds 15 to 20 knots. Choppy on the bay.
.MONDAY NIGHT...South winds 10 to 15 knots, diminishing to 5 to
10 knots early in the morning. A moderate chop on the bay,
diminishing to light chop early in the morning. A slight chance
of showers.
.TUESDAY...South winds 5 to 10 knots, becoming east in the
afternoon. Light chop on the bay, diminishing to smooth late in
the morning, then increasing to light chop in the afternoon. A
slight chance of showers and thunderstorms in the afternoon.
.TUESDAY NIGHT...East winds 5 to 10 knots, becoming northeast
early in the morning. Light chop on the bay. A chance of showers.
A chance of thunderstorms, mainly in the evening.
.WEDNESDAY...North winds 10 to 15 knots. A moderate chop on the
bay. A chance of showers. A slight chance of thunderstorms in the
morning, then a chance of thunderstorms in the afternoon.
.WEDNESDAY NIGHT...North winds 10 to 15 knots. A moderate chop on
the bay. A slight chance of thunderstorms in the evening. A
chance of showers.

Winds and waves higher in and near thunderstorms.

$$

GMZ150-155-220630-
Gulf waters from Port Mansfield to the Rio Grande out 20 nm-
Gulf waters from Baffin Bay to Port Mansfield out 20 nm-
1146 AM CST Fri Nov 21 2025

.TONIGHT...Southeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave
Detail: Southeast 3 feet at 7 seconds. A slight chance of showers
and thunderstorms after midnight.
.SATURDAY...Southeast winds 5 to 10 knots, becoming east in the
afternoon. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at
6 seconds. Showers likely with a chance of thunderstorms.
.SATURDAY NIGHT...East winds around 10 knots, becoming southeast
after midnight. Seas 2 to 4 feet. Wave Detail: Southeast 3 feet
at 6 seconds. A chance of showers with a slight chance of
thunderstorms.
.SUNDAY...Southeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave
Detail: Southeast 3 feet at 6 seconds. A slight chance of
showers.
.SUNDAY NIGHT...Southeast winds 15 to 20 knots. Seas 3 to 4 feet,
building to 4 to 6 feet, occasionally to 8 feet after midnight.
Wave Detail: Southeast 4 feet at 6 seconds, becoming southeast
6 feet at 6 seconds.
.MONDAY...South winds 15 to 20 knots. Seas 5 to 7 feet,
occasionally to 9 feet. Wave Detail: Southeast 6 feet at
7 seconds.
.MONDAY NIGHT...South winds 10 to 15 knots. Seas 3 to 4 feet. A
slight chance of showers.
.TUESDAY...South winds 5 to 10 knots, becoming southeast in the
afternoon. Seas 2 to 3 feet. A slight chance of showers and
thunderstorms.
.TUESDAY NIGHT...East winds around 10 knots, becoming northeast
early in the morning. Seas 3 to 4 feet. A chance of showers and
thunderstorms.
.WEDNESDAY...Northeast winds 10 to 15 knots. Seas 3 to 4 feet.
Showers likely with a slight chance of thunderstorms in the
morning, then a chance of showers and thunderstorms in the
afternoon.
.WEDNESDAY NIGHT...Northeast winds around 15 knots. Seas 4 to
5 feet. A slight chance of thunderstorms in the evening. A chance
of showers.

Winds and seas higher in and near thunderstorms.

$$

GMZ170-175-220630-
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-
1146 AM CST Fri Nov 21 2025

.TONIGHT...Southeast winds around 10 knots. Seas 3 to 4 feet.
Wave Detail: Southeast 3 feet at 6 seconds. A slight chance of
showers and thunderstorms early this morning.
.SATURDAY...Southeast winds 5 to 10 knots, becoming east late in
the afternoon. Seas 3 to 4 feet. Wave Detail: Southeast 2 feet at
6 seconds. A chance of showers and thunderstorms.
.SATURDAY NIGHT...Southeast winds around 10 knots. Seas 3 to
4 feet. Wave Detail: Southeast 3 feet at 6 seconds. A chance of
showers, mainly in the evening.
.SUNDAY...Southeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave
Detail: Southeast 3 feet at 6 seconds. A slight chance of
showers.
.SUNDAY NIGHT...Southeast winds 15 to 20 knots. Seas 3 to 4 feet,
building to 4 to 6 feet, occasionally to 8 feet after midnight.
Wave Detail: Southeast 4 feet at 6 seconds, becoming southeast
6 feet at 6 seconds.
.MONDAY...South winds 15 to 20 knots. Seas 6 to 8 feet,
occasionally to 10 feet, subsiding to 4 to 6 feet, occasionally
to 8 feet in the afternoon. Wave Detail: South 7 feet at
7 seconds, becoming south 6 feet at 7 seconds. A slight chance of
showers and thunderstorms in the afternoon.
.MONDAY NIGHT...South winds 10 to 15 knots. Seas 4 to 5 feet. A
slight chance of showers.
.TUESDAY...South winds 5 to 10 knots, becoming southeast late in
the afternoon. Seas 3 to 4 feet. A slight chance of
thunderstorms. A chance of showers, mainly in the morning.
.TUESDAY NIGHT...East winds around 10 knots, becoming northeast
early in the morning. Seas 3 to 4 feet. A chance of showers and
thunderstorms.
.WEDNESDAY...Northeast winds 10 to 15 knots. Seas 3 to 4 feet. A
chance of thunderstorms. Showers likely, mainly in the morning.
.WEDNESDAY NIGHT...Northeast winds 15 to 20 knots. Seas 4 to
6 feet, occasionally to 8 feet. A chance of showers with a slight
chance of thunderstorms.

Winds and seas higher in and near thunderstorms.

$$