243
FZUS54 KBRO 090556
CWFBRO

Coastal Waters Forecast for the Lower Texas Coast
National Weather Service Brownsville TX
1256 AM CDT Thu Oct 9 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.

GMZ100-091815-
1256 AM CDT Thu Oct 9 2025

.SYNOPSIS...The pressure gradient will strengthen today resulting
in moderate northeasterly winds and building seas into late
Friday. Long period swell is expected to continue into next
weekend. Expect an increasing chance of showers and thunderstorms
today into tonight before diminishing on Friday.

$$

GMZ130-132-135-091815-
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-
1256 AM CDT Thu Oct 9 2025

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

.TODAY...Northeast winds 10 to 15 knots, increasing to 15 to
20 knots this afternoon. A moderate chop on the bay, increasing
to choppy this afternoon. A chance of showers until late
afternoon, then a slight chance of showers late this afternoon.
.TONIGHT...Northeast winds 10 to 15 knots. A moderate chop on the
bay. A slight chance of showers.
.FRIDAY...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 in the morning. A
slight chance of thunderstorms. A slight chance of showers in the
afternoon.
.FRIDAY NIGHT...Northeast winds 10 to 15 knots, becoming east
5 to 10 knots after midnight. A moderate chop on the bay,
diminishing to light chop after midnight.
.SATURDAY...Northeast winds 5 to 10 knots. Light chop on the bay.
.SATURDAY NIGHT...East winds 5 to 10 knots, becoming southeast
after midnight. Light chop on the bay.
.SUNDAY...Southeast winds 5 to 10 knots. Light chop on the bay.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots. Light chop on the
bay.
.MONDAY...Southeast winds 5 to 10 knots, increasing to 10 to
15 knots in the afternoon. Light chop on the bay, increasing to a
moderate chop in the afternoon.
.MONDAY NIGHT...Southeast winds 10 to 15 knots, diminishing to
5 to 10 knots after midnight. A moderate chop on the bay,
diminishing to light chop after midnight.

Winds and waves higher in and near thunderstorms.

$$

GMZ150-155-091815-
Gulf waters from Port Mansfield to the Rio Grande out 20 nm-
Gulf waters from Baffin Bay to Port Mansfield out 20 nm-
1256 AM CDT Thu Oct 9 2025

...SMALL CRAFT EXERCISE CAUTION...

.TODAY...Northeast winds 10 to 15 knots. Seas 4 to 6 feet,
occasionally to 8 feet. Wave Detail: East 5 feet at 7 seconds. A
chance of showers.
.TONIGHT...Northeast winds 10 to 15 knots. Seas 4 to 6 feet,
occasionally to 8 feet. Wave Detail: Southeast 5 feet at
7 seconds. A slight chance of showers early in the evening, then
a chance of showers late in the evening. A slight chance of
showers after midnight.
.FRIDAY...Northeast winds around 15 knots. Seas 4 to 6 feet,
occasionally to 8 feet. Wave Detail: Southeast 5 feet at
7 seconds. A chance of showers with a slight chance of
thunderstorms until late afternoon, then a slight chance of
showers late in the afternoon.
.FRIDAY NIGHT...Northeast winds 10 to 15 knots, becoming east
5 to 10 knots after midnight. Seas 3 to 5 feet. Wave Detail: East
4 feet at 7 seconds. A slight chance of showers early in the
evening.
.SATURDAY...Northeast winds 5 to 10 knots. Seas 3 to 4 feet. Wave
Detail: East 4 feet at 7 seconds.
.SATURDAY NIGHT...East winds 5 to 10 knots, becoming southeast
after midnight. Seas 3 to 4 feet. Wave Detail: East 4 feet at
8 seconds.
.SUNDAY...Southeast winds 5 to 10 knots. Seas 3 to 4 feet.
.SUNDAY NIGHT...Southeast winds around 10 knots. Seas 3 to
4 feet.
.MONDAY...Southeast winds around 10 knots. Seas 3 to 4 feet.
.MONDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to 4 feet.
A slight chance of showers in the late evening and overnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ170-175-091815-
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-
1256 AM CDT Thu Oct 9 2025

...SMALL CRAFT EXERCISE CAUTION...

.TODAY...Northeast winds 15 to 20 knots. Seas 5 to 6 feet,
occasionally to 9 feet. Wave Detail: East 5 feet at 7 seconds. A
chance of showers.
.TONIGHT...Northeast winds 15 to 20 knots. Seas 5 to 6 feet,
occasionally to 9 feet. Wave Detail: East 5 feet at 7 seconds. A
chance of showers, mainly in the evening.
.FRIDAY...Northeast winds 15 to 20 knots. Seas 5 to 6 feet,
occasionally to 9 feet. Wave Detail: Southeast 5 feet at 7
seconds. A chance of showers until late afternoon, then a slight
chance of showers late in the afternoon.
.FRIDAY NIGHT...Northeast winds 10 to 15 knots. Seas 4 to 5 feet.
Wave Detail: East 5 feet at 7 seconds. A slight chance of showers
early in the evening.
.SATURDAY...Northeast winds 5 to 10 knots. Seas 3 to 4 feet. Wave
Detail: East 4 feet at 7 seconds.
.SATURDAY NIGHT...East winds 5 to 10 knots, becoming southeast
after midnight. Seas 3 to 5 feet. Wave Detail: East 4 feet at
8 seconds.
.SUNDAY...Southeast winds 5 to 10 knots. Seas 3 to 4 feet.
.SUNDAY NIGHT...Southeast winds around 10 knots. Seas 3 to
4 feet.
.MONDAY...Southeast winds around 10 knots. Seas 3 to 4 feet.
.MONDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to 4 feet.
A slight chance of showers.

$$