480
FZUS54 KBRO 180629
CWFBRO

Coastal Waters Forecast for the Lower Texas Coast
National Weather Service Brownsville TX
1229 AM CST Tue Nov 18 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.

GMZ100-181930-
1229 AM CST Tue Nov 18 2025

.SYNOPSIS...A gradually more enhanced pressure gradient over
the western Gulf of America will produce increasing winds and
building seas along the Lower Texas Coast during the forecast.
Small Craft Should Exercise Caution and Small Craft Advisory
are likely to be needed, especially around the middle of the
week.

$$

GMZ130-132-135-181930-
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-
1229 AM CST Tue Nov 18 2025

.TODAY...Southeast winds 10 to 15 knots. A moderate chop on the
bay.
.TONIGHT...Southeast winds 10 to 15 knots. A moderate chop on the
bay.
.WEDNESDAY...Southeast winds 10 to 15 knots. A moderate chop on
the bay. A slight chance of showers in the morning.
.WEDNESDAY NIGHT...Southeast winds 15 to 20 knots. Choppy bay
waters. A slight chance of showers after midnight.
.THURSDAY...Southeast winds 15 to 20 knots. Choppy bay waters. A
slight chance of showers.
.THURSDAY NIGHT...Southeast winds 10 to 15 knots. A moderate chop
on the bay.
.FRIDAY...South winds 10 to 15 knots. A moderate chop on the bay.
A slight chance of showers and thunderstorms.
.FRIDAY NIGHT...Southeast winds 5 to 10 knots. A light chop on
the bay. A chance of showers with a slight chance of thunderstorms.
.SATURDAY...East winds 5 to 10 knots, increasing to 10 to 15
knots in the afternoon. A light chop on the bay, increasing to a
moderate chop on the bay in the afternoon. A chance of showers.
.SATURDAY NIGHT...East winds 5 to 10 knots, becoming southeast
10 to 15 knots after midnight. A light chop on the bay,
increasing to a moderate chop on the bay after midnight. A slight
chance of showers in the evening, then a chance of showers after
midnight.

Winds and waves higher in and near thunderstorms.

$$

GMZ150-155-181930-
Gulf waters from Port Mansfield to the Rio Grande out 20 nm-
Gulf waters from Baffin Bay to Port Mansfield out 20 nm-
1229 AM CST Tue Nov 18 2025

.TODAY...Southeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave
Detail: Southeast 3 feet at 5 seconds.
.TONIGHT...Southeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave
Detail: Southeast 3 feet at 5 seconds.
.WEDNESDAY...Southeast winds 10 to 15 knots. Seas 3 to 4 feet.
Wave Detail: Southeast 3 feet at 6 seconds. A slight chance of
showers.
.WEDNESDAY NIGHT...Southeast winds 15 to 20 knots. Seas 3 to
5 feet. Wave Detail: Southeast 4 feet at 6 seconds. A slight
chance of showers.
.THURSDAY...Southeast winds 15 to 20 knots. Seas 4 to 5 feet.
Wave Detail: Southeast 4 feet at 6 seconds. A slight chance of
showers.
.THURSDAY NIGHT...Southeast winds 10 to 15 knots. Seas 4 to
5 feet. Wave Detail: Southeast 4 feet at 6 seconds. A slight
chance of showers and thunderstorms after midnight.
.FRIDAY...South winds 10 to 15 knots. Seas 3 to 4 feet. A slight
chance of thunderstorms. A slight chance of showers in the
morning, then a chance of showers in the afternoon.
.FRIDAY NIGHT...Southeast winds around 10 knots. Seas 3 to 4
feet. A chance of showers with a slight chance of thunderstorms.
.SATURDAY...East winds around 10 knots. Seas 3 to 4 feet. A
slight chance of thunderstorms in the morning. A chance of
showers.
.SATURDAY NIGHT...East winds 10 to 15 knots. Seas 3 to 4 feet. A
chance of showers.

Winds and seas higher in and near thunderstorms.

$$

GMZ170-175-181930-
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-
1229 AM CST Tue Nov 18 2025

.TODAY...Southeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave
Detail: Southeast 4 feet at 5 seconds.
.TONIGHT...Southeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave
Detail: Southeast 4 feet at 5 seconds.
.WEDNESDAY...Southeast winds 10 to 15 knots. Seas 3 to 5 feet.
Wave Detail: Southeast 4 feet at 6 seconds. A slight chance of
showers.
.WEDNESDAY NIGHT...Southeast winds 15 to 20 knots. Seas 3 to
5 feet. Wave Detail: Southeast 4 feet at 6 seconds. A slight
chance of showers.
.THURSDAY...Southeast winds 15 to 20 knots. Seas 4 to 5 feet.
Wave Detail: Southeast 5 feet at 6 seconds. A slight chance of
showers.
.THURSDAY NIGHT...Southeast winds around 15 knots. Seas 4 to
5 feet. Wave Detail: Southeast 4 feet at 6 seconds. A slight
chance of showers and thunderstorms after midnight.
.FRIDAY...South winds 10 to 15 knots. Seas 3 to 5 feet. A slight
chance of thunderstorms. A slight chance of showers in the
morning, then a chance of showers in the afternoon.
.FRIDAY NIGHT...Southeast winds around 10 knots. Seas 3 to
4 feet. A chance of showers. A chance of thunderstorms, mainly in
the evening.
.SATURDAY...East winds around 10 knots. Seas 3 to 4 feet. A
slight chance of thunderstorms in the morning. A chance of
showers.
.SATURDAY NIGHT...East winds 10 to 15 knots. Seas 3 to 4 feet. A
chance of showers.

Winds and seas higher in and near thunderstorms.

$$