534
FZUS54 KBRO 230606
CWFBRO

Coastal Waters Forecast for the Lower Texas Coast
National Weather Service Brownsville TX
106 AM CDT Tue Sep 23 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.

GMZ100-231830-
106 AM CDT Tue Sep 23 2025

.SYNOPSIS...Light to moderate winds and low to moderate seas will
prevail along the Lower Texas Coast through the period with high
pressure in control over the western Gulf of America. Small Craft
Should Exercise Caution and Small Craft Advisory are not likely
to be needed.

$$

GMZ130-132-135-231830-
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-
106 AM CDT Tue Sep 23 2025

.TODAY...Southeast winds 10 to 15 knots. A moderate chop on the
bay. A slight chance of showers and thunderstorms this afternoon.
.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 chance of showers. A slight chance of thunderstorms in
the morning, then a chance of thunderstorms in the afternoon.
.WEDNESDAY NIGHT...Southeast winds 5 to 10 knots, becoming south
early in the morning. A light chop on the bay. A slight chance of
thunderstorms in the evening. A chance of showers. A chance of
thunderstorms after midnight.
.THURSDAY...South winds 5 to 10 knots, becoming north late in the
morning, then becoming northeast in the afternoon. A light chop
on the bay. A chance of thunderstorms. Showers likely.
.THURSDAY NIGHT...East winds 5 to 10 knots, becoming southeast
after midnight, then becoming southwest early in the morning.
A light chop on the bay. A chance of thunderstorms. Showers
likely early in the evening, then a chance of showers in the late
evening and overnight.
.FRIDAY...Northwest winds 5 to 10 knots, becoming northeast in
the afternoon. A light chop on the bay. A chance of thunderstorms
in the morning. A chance of showers. A slight chance of
thunderstorms in the afternoon.
.FRIDAY NIGHT...East winds 5 to 10 knots, becoming southeast
after midnight. A light chop on the bay. A slight chance of
thunderstorms early in the evening. A slight chance of showers.
.SATURDAY...East winds 5 to 10 knots. A light chop on the bay. A
slight chance of showers in the morning, then a chance of showers
in the afternoon.
.SATURDAY NIGHT...East winds 5 to 10 knots. A light chop on the
bay. A chance of showers early in the evening, then a slight
chance of showers late in the evening. A chance of showers after
midnight.

Winds and waves higher in and near thunderstorms.

$$

GMZ150-155-231830-
Gulf waters from Port Mansfield to the Rio Grande out 20 nm-
Gulf waters from Baffin Bay to Port Mansfield out 20 nm-
106 AM CDT Tue Sep 23 2025

.TODAY...Southeast winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 3 feet at 5 seconds. A slight chance of
thunderstorms until late afternoon. A slight chance of showers.
.TONIGHT...Southeast winds 10 to 15 knots. Seas 2 to 4 feet. Wave
Detail: Southeast 3 feet at 5 seconds. A slight chance of showers
and thunderstorms after midnight.
.WEDNESDAY...Southeast winds 10 to 15 knots. Seas 2 to 3 feet.
Wave Detail: Southeast 3 feet at 5 seconds. A chance of showers.
A slight chance of thunderstorms early in the morning, then a
chance of thunderstorms in the afternoon.
.WEDNESDAY NIGHT...Southeast winds around 10 knots, becoming
south early in the morning. Seas 2 to 3 feet. Wave Detail:
Southeast 2 feet at 5 seconds. A chance of showers with a slight
chance of thunderstorms in the evening, then showers likely with
a chance of thunderstorms after midnight.
.THURSDAY...South winds 5 to 10 knots, becoming north late in the
morning, then becoming northeast in the afternoon. Seas 2 to
3 feet. Wave Detail: Southeast 2 feet at 5 seconds and north
1 foot at 3 seconds. A chance of thunderstorms. Showers.
.THURSDAY NIGHT...East winds 5 to 10 knots, becoming around
5 knots after midnight, then becoming west early in the morning.
Seas 2 to 3 feet. Wave Detail: East 2 feet at 5 seconds. A chance
of thunderstorms. Showers likely.
.FRIDAY...North winds around 10 knots, becoming northeast in the
afternoon. Seas 2 to 3 feet. Showers likely with a chance of
thunderstorms in the morning, then a chance of showers with a
slight chance of thunderstorms in the afternoon.
.FRIDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet. A
slight chance of thunderstorms early in the evening. A slight
chance of showers in the evening, then a chance of showers with a
slight chance of thunderstorms after midnight.
.SATURDAY...Northeast winds 5 to 10 knots. Seas 2 to 3 feet. A
chance of showers.
.SATURDAY NIGHT...East winds around 10 knots. Seas 2 to 3 feet. A
chance of showers.

Winds and seas higher in and near thunderstorms.

$$

GMZ170-175-231830-
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-
106 AM CDT Tue Sep 23 2025

.TODAY...Southeast winds around 10 knots. Seas 2 to 4 feet. Wave
Detail: Southeast 3 feet at 5 seconds. A slight chance of
thunderstorms.
.TONIGHT...Southeast winds 10 to 15 knots. Seas 2 to 4 feet. Wave
Detail: Southeast 3 feet at 5 seconds. A slight chance of showers
early in the evening. A slight chance of showers and
thunderstorms after midnight.
.WEDNESDAY...Southeast winds around 10 knots. Seas 2 to 4 feet.
Wave Detail: Southeast 3 feet at 5 seconds. A chance of showers.
A slight chance of thunderstorms early in the morning, then a
chance of thunderstorms in the afternoon.
.WEDNESDAY NIGHT...Southeast winds around 10 knots, becoming
south early in the morning. Seas 2 to 3 feet. Wave Detail:
Southeast 2 feet at 5 seconds. A chance of showers with a slight
chance of thunderstorms in the evening, then showers likely with
a chance of thunderstorms after midnight.
.THURSDAY...South winds 5 to 10 knots, becoming west late in the
morning, then becoming northeast in the afternoon. Seas 2 to
3 feet. Wave Detail: Southeast 2 feet at 5 seconds and north
1 foot at 3 seconds. A chance of thunderstorms. Showers.
.THURSDAY NIGHT...Northeast winds 5 to 10 knots. Seas 2 to
3 feet. Wave Detail: Southeast 2 feet at 6 seconds and north
1 foot at 4 seconds. A chance of thunderstorms. Showers likely.
.FRIDAY...North winds around 10 knots, becoming northeast late in
the afternoon. Seas 2 to 3 feet. Showers likely with a chance of
thunderstorms early in the morning, then a chance of showers with
a slight chance of thunderstorms in the afternoon.
.FRIDAY NIGHT...Northeast winds 5 to 10 knots, becoming east
after midnight. Seas 2 to 3 feet. A slight chance of showers in
the evening, then a chance of showers with a slight chance of
thunderstorms after midnight.
.SATURDAY...Northeast winds around 10 knots. Seas 2 to 3 feet. A
slight chance of thunderstorms early in the morning. A chance of
showers.
.SATURDAY NIGHT...East winds around 10 knots. Seas 2 to 3 feet. A
chance of showers.

Winds and seas higher in and near thunderstorms.

$$