311
FZUS54 KBRO 151747
CWFBRO

Coastal Waters Forecast for the Lower Texas Coast
National Weather Service Brownsville TX
1147 AM CST Sat Nov 15 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.

GMZ100-160630-
1147 AM CST Sat Nov 15 2025

.SYNOPSIS...Generally favorable conditions are expected across the
coastal waters this weekend with a southeasterly breeze. Southerly
winds increase by mid week as low pressure deepens across the
Southern Plains, leading to hazardous marine conditions.

$$

GMZ130-132-135-160630-
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-
1147 AM CST Sat Nov 15 2025

.TODAY...South winds around 5 knots, becoming southeast late this
morning, then increasing to 10 to 15 knots this afternoon. Smooth
on the bay, increasing to light chop late this morning, then
increasing to a moderate chop this afternoon.
.TONIGHT...South winds 10 to 15 knots. A moderate chop on the
bay.
.SUNDAY...South winds around 10 knots, becoming southeast in the
afternoon. Light chop on the bay, increasing to a moderate chop
in the afternoon.
.SUNDAY NIGHT...South winds 10 to 15 knots. A moderate chop on
the bay.
.MONDAY...Southeast winds 10 to 15 knots. A moderate chop on the
bay.
.MONDAY NIGHT...Southeast winds 10 to 15 knots. A moderate chop
on the bay.
.TUESDAY...Southeast winds 10 to 15 knots, increasing to 15 to
20 knots in the afternoon. Choppy on the bay.
.TUESDAY NIGHT...Southeast winds 10 to 15 knots. A moderate chop
on the bay.
.WEDNESDAY...Southeast winds 10 to 15 knots, increasing to 15 to
20 knots in the afternoon. A moderate chop on the bay, increasing
to choppy in the afternoon.
.WEDNESDAY NIGHT...Southeast winds 15 to 20 knots. Choppy on the
bay. A slight chance of showers after midnight.

$$

GMZ150-155-160630-
Gulf waters from Port Mansfield to the Rio Grande out 20 nm-
Gulf waters from Baffin Bay to Port Mansfield out 20 nm-
1147 AM CST Sat Nov 15 2025

.TODAY...Southeast winds 5 to 10 knots, increasing to 10 to
15 knots late this afternoon. Seas 2 to 3 feet. Wave Detail:
Southeast 3 feet at 5 seconds.
.TONIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 2 feet at 5 seconds.
.SUNDAY...South winds 10 to 15 knots, becoming southeast late in
the afternoon. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at
5 seconds.
.SUNDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 4 feet.
Wave Detail: Southeast 3 feet at 6 seconds.
.MONDAY...Southeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave
Detail: Southeast 3 feet at 5 seconds.
.MONDAY NIGHT...Southeast winds around 15 knots. Seas 3 to
4 feet. Wave Detail: Southeast 4 feet at 5 seconds.
.TUESDAY...Southeast winds around 15 knots. Seas 3 to 4 feet.
.TUESDAY NIGHT...Southeast winds around 15 knots. Seas 3 to
4 feet. A slight chance of showers and thunderstorms after
midnight.
.WEDNESDAY...Southeast winds 15 to 20 knots. Seas 4 to 5 feet.
.WEDNESDAY NIGHT...Southeast winds 15 to 20 knots. Seas 4 to
5 feet, building to 5 to 7 feet, occasionally to 9 feet after
midnight. A slight chance of showers.

Winds and seas higher in and near thunderstorms.

$$

GMZ170-175-160630-
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-
1147 AM CST Sat Nov 15 2025

.TODAY...Southeast winds around 10 knots. Seas 2 to 3 feet. Wave
Detail: South 3 feet at 5 seconds and southeast 1 foot at
8 seconds.
.TONIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 2 feet at 5 seconds.
.SUNDAY...South winds 10 to 15 knots, becoming southeast late in
the afternoon. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at
6 seconds.
.SUNDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 4 feet.
Wave Detail: Southeast 3 feet at 6 seconds.
.MONDAY...Southeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave
Detail: Southeast 3 feet at 5 seconds.
.MONDAY NIGHT...Southeast winds 15 to 20 knots. Seas 3 to 4 feet.
Wave Detail: Southeast 4 feet at 5 seconds.
.TUESDAY...Southeast winds around 15 knots. Seas 3 to 4 feet.
.TUESDAY NIGHT...Southeast winds 15 to 20 knots. Seas 3 to
5 feet. A slight chance of showers. A slight chance of
thunderstorms after midnight.
.WEDNESDAY...Southeast winds 15 to 20 knots. Seas 4 to 5 feet. A
slight chance of showers.
.WEDNESDAY NIGHT...Southeast winds 15 to 20 knots, increasing to
20 to 25 knots early in the morning. Seas 4 to 5 feet, building
to 5 to 7 feet, occasionally to 9 feet after midnight. A slight
chance of showers.

Winds and seas higher in and near thunderstorms.

$$