687
FZUS54 KBRO 111733
CWFBRO

Coastal Waters Forecast for the Lower Texas Coast
National Weather Service Brownsville TX
1133 AM CST Tue Nov 11 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.

GMZ100-120630-
1133 AM CST Tue Nov 11 2025

.SYNOPSIS...An enhanced pressure gradient has prompted Small Craft
Advisories for the nearshore Gulf waters and northern offshore
Gulf waters this evening into the overnight. Small Craft will need
to exercise caution on all waters today and tonight on the Laguna
and offshore southern waters. Conditions will improve Wednesday
morning before the pressure gradient begins to increase again late
Thursday. By Friday afternoon/evening, Small Craft Advisories may
be needed on the Laguna Madre and Gulf waters through midday
Saturday before conditions begin to improve. There is a low chance
of showers and thunderstorms on the Gulf Saturday and Sunday.



$$

GMZ130-132-135-120630-
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-
1133 AM CST Tue Nov 11 2025

...SMALL CRAFT EXERCISE CAUTION LATER THIS AFTERNOON THROUGH
WEDNESDAY...

.REST OF TODAY...Southeast winds 5 to 10 knots, increasing to
10 to 15 knots this afternoon. Light chop on the bay, increasing
to a moderate chop this afternoon.
.TONIGHT...South winds 15 to 20 knots. Choppy on the bay.
.WEDNESDAY...South winds 15 to 20 knots. Choppy on the bay.
.WEDNESDAY NIGHT...South winds 10 to 15 knots. A moderate chop on
the bay.
.THURSDAY...Southeast winds 10 to 15 knots. A moderate chop on
the bay.
.THURSDAY NIGHT...Southeast winds 10 to 15 knots. A moderate chop
on the bay.
.FRIDAY...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.
.FRIDAY NIGHT...Southeast winds 15 to 20 knots. Choppy on the
bay.
.SATURDAY...Southeast winds 15 to 20 knots. Choppy on the bay.
.SATURDAY NIGHT...Southeast winds 15 to 20 knots. Choppy on the
bay.

$$

GMZ150-155-175-120630-
Gulf waters from Port Mansfield to the Rio Grande out 20 nm-
Gulf waters from Baffin Bay to Port Mansfield out 20 nm-
Gulf waters from Baffin Bay to Port Mansfield extending from
20 to 60 nm-
1133 AM CST Tue Nov 11 2025

...SMALL CRAFT EXERCISE CAUTION THIS AFTERNOON...

...SMALL CRAFT ADVISORY IN EFFECT FROM 6 PM CST THIS EVENING
THROUGH LATE TONIGHT...

.REST OF TODAY...Southeast winds 10 to 15 knots. Seas 2 to
3 feet. Wave Detail: East 2 feet at 6 seconds and southeast
2 feet at 3 seconds.
.TONIGHT...South winds around 20 knots. Seas 3 to 5 feet. Wave
Detail: Southeast 4 feet at 4 seconds and east 2 feet at 6
seconds.
.WEDNESDAY...South winds 10 to 15 knots. Seas 3 to 4 feet. Wave
Detail: South 4 feet at 5 seconds.
.WEDNESDAY NIGHT...South winds 10 to 15 knots. Seas 3 to 4 feet.
Wave Detail: South 3 feet at 5 seconds and east 2 feet at
6 seconds.
.THURSDAY...Southeast winds 10 to 15 knots. Seas 3 to 4 feet.
Wave Detail: South 3 feet at 5 seconds and east 2 feet at
6 seconds.
.THURSDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to
4 feet. Wave Detail: Southeast 3 feet at 5 seconds and east
2 feet at 7 seconds.
.FRIDAY...Southeast winds 10 to 15 knots. Seas 3 to 4 feet. A
slight chance of showers in the afternoon.
.FRIDAY NIGHT...Southeast winds 15 to 20 knots. Seas 4 to 6 feet,
occasionally to 8 feet.
.SATURDAY...Southeast winds 15 to 20 knots. Seas 5 to 7 feet,
occasionally to 9 feet, subsiding to 4 to 5 feet in the
afternoon. A slight chance of showers in the afternoon.
.SATURDAY NIGHT...Southeast winds 15 to 20 knots. Seas 4 to
5 feet. A slight chance of showers. A slight chance of
thunderstorms after midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ170-120630-
Gulf waters from Port Mansfield to the Rio Grande extending from
20 to 60 nm-
1133 AM CST Tue Nov 11 2025

...SMALL CRAFT EXERCISE CAUTION LATER THIS AFTERNOON THROUGH
TONIGHT...

.REST OF TODAY...Southeast winds 10 to 15 knots. Seas 3 to
4 feet. Wave Detail: Northeast 3 feet at 7 seconds.
.TONIGHT...South winds 15 to 20 knots. Seas 3 to 5 feet. Wave
Detail: South 4 feet at 5 seconds and northeast 2 feet at
6 seconds.
.WEDNESDAY...South winds 10 to 15 knots. Seas 3 to 5 feet. Wave
Detail: South 4 feet at 5 seconds and east 2 feet at 6 seconds.
.WEDNESDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to
4 feet. Wave Detail: South 3 feet at 5 seconds and east 2 feet at
6 seconds.
.THURSDAY...Southeast winds 10 to 15 knots. Seas 3 to 4 feet.
Wave Detail: East 2 feet at 6 seconds and south 2 feet at
5 seconds.
.THURSDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to
4 feet. Wave Detail: South 3 feet at 5 seconds and east 2 feet at
7 seconds.
.FRIDAY...Southeast winds around 15 knots. Seas 3 to 5 feet. A
slight chance of showers in the afternoon.
.FRIDAY NIGHT...Southeast winds 15 to 20 knots. Seas 3 to 5 feet.
.SATURDAY...Southeast winds 15 to 20 knots. Seas 5 to 7 feet,
occasionally to 9 feet, subsiding to 4 to 5 feet in the
afternoon. A slight chance of showers in the afternoon.
.SATURDAY NIGHT...Southeast winds 15 to 20 knots. Seas 4 to
6 feet, occasionally to 8 feet. A slight chance of showers and
thunderstorms.

Winds and seas higher in and near thunderstorms.

$$