846
FZUS54 KBRO 231813
CWFBRO

Coastal Waters Forecast for the Lower Texas Coast
National Weather Service Brownsville TX
1213 PM CST Sun Nov 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.

GMZ100-240715-
1213 PM CST Sun Nov 23 2025

.SYNOPSIS...Generally favorable marine conditions are expected to
continue into this afternoon. Adverse conditions will likely
develop this evening into Monday as the pressure gradient
strengthens along the lower Texas coast. Generally favorable
conditions are briefly forecast to return Tuesday before the next
frontal passage by Wednesday brings moderate northeasterly winds
and briefly elevated seas. The chance of showers and
thunderstorms continues into Wednesday.


$$

GMZ130-132-135-240715-
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-
1213 PM CST Sun Nov 23 2025

...SMALL CRAFT SHOULD EXERCISE CAUTION...

.TONIGHT...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.
.TUESDAY...South winds 5 to 10 knots, becoming east late in the
afternoon. Light chop on the bay.
.TUESDAY NIGHT...East winds 5 to 10 knots, becoming northeast
early in the morning. Light chop on the bay. A slight chance of
showers in the evening, then a chance of showers with a slight
chance of thunderstorms after midnight.
.WEDNESDAY...Northeast 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. A chance of showers with a slight
chance of thunderstorms.
.WEDNESDAY NIGHT...Northeast winds 15 to 20 knots, diminishing to
10 to 15 knots in the late evening and overnight. Choppy on the
bay, diminishing to a moderate chop in the late evening and
overnight. A slight chance of showers in the evening.
.THURSDAY...Northeast winds 10 to 15 knots. A moderate chop on
the bay.
.THURSDAY NIGHT...East winds around 10 knots. Light chop on the
bay.
.FRIDAY...Southeast winds 10 to 15 knots. A moderate chop on the
bay. A slight chance of showers.
.FRIDAY NIGHT...Southeast winds 15 to 20 knots. Choppy on the
bay. A slight chance of showers.

Winds and waves higher in and near thunderstorms.

$$

GMZ150-155-240715-
Gulf waters from Port Mansfield to the Rio Grande out 20 nm-
Gulf waters from Baffin Bay to Port Mansfield out 20 nm-
1213 PM CST Sun Nov 23 2025

...SMALL CRAFT SHOULD EXERCISE CAUTION...

.TONIGHT...Southeast winds 15 to 20 knots, becoming south 20 to
25 knots early Monday morning. Seas 3 to 5 feet. Wave Detail:
Southeast 5 feet at 6 seconds.
.MONDAY...South winds 20 to 25 knots, diminishing to 15 to
20 knots late in the afternoon. Seas 4 to 6 feet, occasionally to
8 feet. Wave Detail: Southeast 5 feet at 6 seconds.
.MONDAY NIGHT...South winds 15 to 20 knots, diminishing to 10 to
15 knots early in the morning. Seas 3 to 4 feet. Wave Detail:
Southeast 4 feet at 6 seconds.
.TUESDAY...Southwest winds 5 to 10 knots, becoming east late in
the afternoon. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at
6 seconds. A slight chance of showers in the morning.
.TUESDAY NIGHT...East winds around 10 knots, becoming northeast
early in the morning. Seas 2 to 3 feet. Wave Detail: Southeast
3 feet at 6 seconds. A slight chance of showers in the evening,
then a chance of showers with a slight chance of thunderstorms
after midnight.
.WEDNESDAY...Northeast winds 15 to 20 knots. Seas 3 to 5 feet.
Wave Detail: Northeast 5 feet at 5 seconds. A chance of showers
with a slight chance of thunderstorms.
.WEDNESDAY NIGHT...Northeast winds 15 to 20 knots. Seas 4 to
5 feet. A slight chance of showers. A slight chance of
thunderstorms after midnight.
.THURSDAY...Northeast winds 10 to 15 knots. Seas 3 to 5 feet. A
slight chance of showers.
.THURSDAY NIGHT...East winds 10 to 15 knots. Seas 3 to 4 feet. A
slight chance of showers.
.FRIDAY...Southeast winds 10 to 15 knots. Seas 3 to 5 feet. A
slight chance of showers in the morning, then a chance of showers
in the afternoon.
.FRIDAY 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
chance of showers. A slight chance of thunderstorms after
midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ170-175-240715-
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-
1213 PM CST Sun Nov 23 2025

...SMALL CRAFT SHOULD EXERCISE CAUTION...

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

Winds and seas higher in and near thunderstorms.

$$