430
FZUS54 KBRO 271739
CWFBRO

Coastal Waters Forecast for the Lower Texas Coast
National Weather Service Brownsville TX
1139 AM CST Thu Nov 27 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.

GMZ100-280615-
1139 AM CST Thu Nov 27 2025

.SYNOPSIS...Slightly adverse marine conditions will continue
through tonight with small craft needing to use caution on all
waters off the lower Texas coast due to elevated winds. An
enhanced pressure gradient will increase winds Friday into
Saturday and a strong cold front arrives on Sunday. Small Craft
Advisories are in effect Friday into Saturday.


$$

GMZ130-132-135-280615-
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-
1139 AM CST Thu Nov 27 2025

...SMALL CRAFT CAUTION THROUGH THIS EVENING...

...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY AFTERNOON THROUGH
SATURDAY AFTERNOON...

.REST OF TODAY...Northeast winds around 15 knots. A moderate chop
on the bay.
.TONIGHT...East winds 10 to 15 knots. A moderate chop on the bay.
.FRIDAY...East winds around 20 knots. Choppy on the bay. A slight
chance of showers in the afternoon.
.FRIDAY NIGHT...Southeast winds around 20 knots. Choppy on the
bay. A slight chance of showers.
.SATURDAY...South winds around 20 knots. Choppy on the bay. A
slight chance of showers.
.SATURDAY NIGHT...South winds 10 to 15 knots. A moderate chop on
the bay. A slight chance of showers in the evening, then a chance
of showers after midnight. A slight chance of thunderstorms early
in the morning.
.SUNDAY...Southwest winds 10 to 15 knots, becoming northeast late
in the morning, then becoming north 15 to 20 knots in the
afternoon. Choppy on the bay. A chance of showers.
.SUNDAY NIGHT...North winds around 15 knots. A moderate chop on
the bay. A chance of thunderstorms. A chance of showers in the
evening, then showers likely after midnight.
.MONDAY...North winds 10 to 15 knots. A moderate chop on the bay.
A chance of showers.
.MONDAY NIGHT...North winds 10 to 15 knots. A moderate chop on
the bay. A chance of showers.

Winds and waves higher in and near thunderstorms.

$$

GMZ150-155-280615-
Gulf waters from Port Mansfield to the Rio Grande out 20 nm-
Gulf waters from Baffin Bay to Port Mansfield out 20 nm-
1139 AM CST Thu Nov 27 2025

...SMALL CRAFT CAUTION THROUGH THIS EVENING...

...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY AFTERNOON THROUGH
SATURDAY AFTERNOON...

.REST OF TODAY...Northeast winds around 15 knots. Seas 4 to
5 feet. Wave Detail: East 4 feet at 7 seconds.
.TONIGHT...East winds around 15 knots. Seas 4 to 5 feet. Wave
Detail: East 5 feet at 7 seconds.
.FRIDAY...East winds 15 to 20 knots. Seas 4 to 5 feet, building
to 5 to 7 feet, occasionally to 9 feet in the afternoon. Wave
Detail: East 5 feet at 7 seconds. A slight chance of showers in
the afternoon.
.FRIDAY NIGHT...Southeast winds 20 to 25 knots. Seas 6 to 8 feet,
occasionally to 10 feet. Wave Detail: Southeast 7 feet at
7 seconds. A chance of showers, mainly in the evening.
.SATURDAY...South winds 20 to 25 knots, diminishing to 15 to
20 knots late in the afternoon. Seas 6 to 8 feet, occasionally to
10 feet. Wave Detail: Southeast 7 feet at 7 seconds. A slight
chance of showers in the morning. A slight chance of
thunderstorms in the afternoon. A chance of showers in the
afternoon.
.SATURDAY NIGHT...South winds 15 to 20 knots. Seas 4 to 6 feet,
occasionally to 8 feet. Wave Detail: Southeast 6 feet at
7 seconds. A slight chance of showers in the evening, then a
chance of showers with a slight chance of thunderstorms after
midnight.
.SUNDAY...South winds 10 to 15 knots, becoming northeast late in
the morning, then increasing to 15 to 20 knots in the afternoon.
Seas 4 to 6 feet, occasionally to 8 feet. Showers likely with a
chance of thunderstorms.
.SUNDAY NIGHT...North winds 15 to 20 knots. Seas 5 to 7 feet,
occasionally to 9 feet. Showers likely with a chance of
thunderstorms.
.MONDAY...North winds around 15 knots. Seas 4 to 6 feet,
occasionally to 8 feet. Showers likely, mainly in the morning.
.MONDAY NIGHT...North winds 15 to 20 knots. Seas 4 to 5 feet,
building to 5 to 7 feet, occasionally to 9 feet after midnight. A
chance of showers.

Winds and seas higher in and near thunderstorms.

$$

GMZ170-175-280615-
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-
1139 AM CST Thu Nov 27 2025

...SMALL CRAFT CAUTION THROUGH THIS EVENING...

...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY AFTERNOON THROUGH
SATURDAY AFTERNOON...

.REST OF TODAY...Northeast winds 15 to 20 knots. Seas 4 to
5 feet. Wave Detail: Northeast 5 feet at 7 seconds.
.TONIGHT...East winds 15 to 20 knots. Seas 4 to 6 feet,
occasionally to 8 feet. Wave Detail: East 5 feet at 7 seconds.
.FRIDAY...East winds 15 to 20 knots. Seas 5 to 7 feet,
occasionally to 9 feet. Wave Detail: East 6 feet at 7 seconds. A
slight chance of showers in the afternoon.
.FRIDAY NIGHT...Southeast winds 20 to 25 knots. Seas 6 to 9 feet,
occasionally to 11 feet. Wave Detail: Southeast 7 feet at
7 seconds. A chance of showers.
.SATURDAY...South winds 20 to 25 knots, diminishing to 15 to
20 knots late in the afternoon. Seas 6 to 9 feet, occasionally to
11 feet. Wave Detail: Southeast 8 feet at 7 seconds. A chance of
showers.
.SATURDAY NIGHT...South winds 15 to 20 knots. Seas 5 to 7 feet,
occasionally to 9 feet. Wave Detail: South 6 feet at 7 seconds. A
chance of showers with a slight chance of thunderstorms in the
evening, then showers likely with a chance of thunderstorms after
midnight.
.SUNDAY...South winds around 15 knots, becoming northeast late in
the morning, then increasing to 15 to 20 knots in the afternoon.
Seas 5 to 7 feet, occasionally to 9 feet. A chance of
thunderstorms. Showers.
.SUNDAY NIGHT...Northeast winds 15 to 20 knots. Seas 5 to 7 feet,
occasionally to 9 feet, subsiding to 4 to 5 feet after midnight.
A chance of thunderstorms. Showers.
.MONDAY...Northeast winds around 15 knots, becoming north in the
afternoon. Seas 4 to 5 feet. Showers.
.MONDAY NIGHT...North winds 15 to 20 knots. Seas 5 to 7 feet,
occasionally to 9 feet. Showers likely.

Winds and seas higher in and near thunderstorms.

$$