364
FZUS54 KBRO 190531
CWFBRO

Coastal Waters Forecast for the Lower Texas Coast
National Weather Service Brownsville TX
1231 AM CDT Tue Aug 19 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.

GMZ100-191815-
1231 AM CDT Tue Aug 19 2025

.SYNOPSIS...Day-to-day or near day-to-day chances for showers and
thunderstorms will begin to increase today and persist through
next weekend. Otherwise, favorable marine conditions are expected
along the Lower Texas Coast through the forecast period, with
light to moderate winds and low seas.

$$

GMZ130-132-135-191815-
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-
1231 AM CDT Tue Aug 19 2025

.TODAY...South winds around 5 knots becoming east this afternoon.
Smooth on the bay becoming light chop this afternoon.
.TONIGHT...East winds 5 to 10 knots becoming south after
midnight. Light chop on the bay becoming smooth after midnight. A
slight chance of showers and thunderstorms after midnight.
.WEDNESDAY...Northwest winds around 5 knots becoming northeast in
the afternoon. Smooth on the bay becoming light chop in the
afternoon. A chance of showers and thunderstorms, mainly in the
morning.
.WEDNESDAY NIGHT...East winds 5 to 10 knots becoming south after
midnight. Light chop on the bay becoming smooth after midnight.
.THURSDAY...Northwest winds around 5 knots becoming east in the
afternoon. Smooth on the bay becoming light chop in the
afternoon. A slight chance of showers in the morning. A chance of
showers with a slight chance of thunderstorms in the afternoon.
.THURSDAY NIGHT...Southeast winds 5 to 10 knots becoming south
after midnight. Light chop on the bay becoming smooth after
midnight. A slight chance of showers and thunderstorms.
.FRIDAY...West winds around 5 knots becoming east in the
afternoon. Smooth on the bay becoming light chop in the
afternoon. A slight chance of showers and thunderstorms in the
morning, then a chance of showers and thunderstorms in the
afternoon.
.FRIDAY NIGHT...Southeast winds 5 to 10 knots becoming south
after midnight. Light chop on the bay. A slight chance of showers
and thunderstorms after midnight.
.SATURDAY...Southeast winds around 5 knots becoming east in the
afternoon. Smooth on the bay becoming light chop in the
afternoon. A slight chance of thunderstorms in the morning. A
chance of showers. A chance of thunderstorms in the afternoon.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots becoming south
after midnight. Light chop on the bay becoming smooth after
midnight. A slight chance of showers and thunderstorms after
midnight.

Winds and waves higher in and near thunderstorms.

$$

GMZ150-155-191815-
Gulf waters from Port Mansfield to the Rio Grande out 20 nm-
Gulf waters from Baffin Bay to Port Mansfield out 20 nm-
1231 AM CDT Tue Aug 19 2025

.TODAY...West winds around 5 knots becoming northeast this
afternoon. Seas 1 to 2 feet. Wave Detail: East 1 foot at
5 seconds.
.TONIGHT...East winds 5 to 10 knots becoming south after
midnight. Seas 1 to 2 feet. Wave Detail: East 1 foot at
5 seconds. A slight chance of showers and thunderstorms after
midnight.
.WEDNESDAY...Northwest winds around 5 knots becoming northeast
around 5 knots in the afternoon. Seas 1 to 2 feet. Wave Detail:
East 1 foot at 4 seconds. A chance of showers and thunderstorms
in the morning.
.WEDNESDAY NIGHT...East winds around 5 knots becoming south
around 5 knots after midnight. Seas 1 to 2 feet. Wave Detail:
East 1 foot at 4 seconds.
.THURSDAY...Northwest winds around 5 knots becoming northeast in
the afternoon. Seas 1 to 2 feet. Wave Detail: East 1 foot at
4 seconds. A slight chance of showers and thunderstorms.
.THURSDAY NIGHT...Southeast winds around 5 knots becoming south
after midnight. Seas 1 to 2 feet. Wave Detail: East 1 foot at
3 seconds. A slight chance of showers and thunderstorms after
midnight.
.FRIDAY...West winds around 5 knots becoming east in the
afternoon. Seas 1 to 2 feet. A slight chance of showers and
thunderstorms.
.FRIDAY NIGHT...Southeast winds 5 to 10 knots becoming south
after midnight. Seas 1 to 2 feet. A slight chance of showers and
thunderstorms after midnight.
.SATURDAY...South winds around 5 knots becoming east in the
afternoon. Seas 1 to 2 feet. A chance of showers in the morning.
A slight chance of thunderstorms. A slight chance of showers in
the afternoon.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots becoming south
after midnight. Seas 1 to 2 feet. A slight chance of showers and
thunderstorms after midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ170-175-191815-
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-
1231 AM CDT Tue Aug 19 2025

.TODAY...West winds around 5 knots becoming northeast this
afternoon. Seas 1 to 2 feet. Wave Detail: East 1 foot at
5 seconds. A slight chance of showers and thunderstorms.
.TONIGHT...East winds 5 to 10 knots becoming southeast after
midnight. Seas 1 to 2 feet. Wave Detail: East 1 foot at
4 seconds. A chance of showers and thunderstorms after midnight.
.WEDNESDAY...North winds around 5 knots becoming northeast around
5 knots in the afternoon. Seas 1 to 2 feet. Wave Detail: East
1 foot at 4 seconds. A chance of showers and thunderstorms in the
morning.
.WEDNESDAY NIGHT...East winds around 5 knots becoming south
around 5 knots after midnight. Seas 1 to 2 feet. Wave Detail:
East 1 foot at 4 seconds.
.THURSDAY...Northwest winds around 5 knots becoming northeast in
the afternoon. Seas 1 to 2 feet. Wave Detail: East 1 foot at
4 seconds. A slight chance of showers and thunderstorms in the
morning.
.THURSDAY NIGHT...Southeast winds around 5 knots becoming south
after midnight. Seas 1 to 2 feet. Wave Detail: East 1 foot at
3 seconds. A slight chance of showers and thunderstorms after
midnight.
.FRIDAY...West winds around 5 knots becoming northeast in the
afternoon. Seas 1 to 2 feet. A chance of showers and
thunderstorms in the morning.
.FRIDAY NIGHT...Southeast winds 5 to 10 knots becoming south
after midnight. Seas 1 to 2 feet. A chance of showers and
thunderstorms after midnight.
.SATURDAY...South winds around 5 knots becoming east in the
afternoon. Seas 1 to 2 feet. A chance of showers and
thunderstorms, mainly in the morning.
.SATURDAY NIGHT...Southeast winds around 5 knots becoming south
after midnight. Seas 1 to 2 feet. A chance of showers and
thunderstorms after midnight.

Winds and seas higher in and near thunderstorms.

$$