650
FZUS54 KBRO 300542
CWFBRO

Coastal Waters Forecast for the Lower Texas Coast
National Weather Service Brownsville TX
1242 AM CDT Sat Aug 30 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.

GMZ100-301830-
1242 AM CDT Sat Aug 30 2025

.SYNOPSIS...Light to moderate winds and low to moderate seas are
forecast along the Lower Texas Coast through the period. The
passage of a weak cold front early next week will produce a
significant wind shift. However, Small Craft Should Exercise
Caution and Small Craft Advisory are not likely to be needed.

$$

GMZ130-132-135-301830-
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-
1242 AM CDT Sat Aug 30 2025

.TODAY...South winds 5 to 10 knots, becoming southeast 10 to 15
knots this afternoon. A light chop on the bay, increasing to a
moderate chop on the bay this afternoon.
.TONIGHT...Southeast winds 10 to 15 knots, becoming south 5 to
10 knots early in the morning. A moderate chop on the bay,
diminishing to a light chop on the bay early in the morning.
.SUNDAY...South winds 5 to 10 knots, becoming southeast early in
the afternoon, then increasing to 10 to 15 knots late in the
afternoon. A light chop on the bay, increasing to a moderate chop
on the bay late in the afternoon.
.SUNDAY NIGHT...Southeast winds 10 to 15 knots, diminishing to
5 to 10 knots after midnight. A light chop on the bay. A slight
chance of showers early in the morning.
.MONDAY...South winds around 5 knots, becoming east in the
afternoon. A light chop on the bay. A chance of showers. A slight
chance of thunderstorms in the morning, then a chance of
thunderstorms in the afternoon.
.MONDAY NIGHT...East winds 5 to 10 knots, becoming south early in
the morning. A light chop on the bay. A slight chance of
thunderstorms in the evening. A chance of showers. A chance of
thunderstorms after midnight.
.TUESDAY...Northwest winds around 5 knots, becoming northeast in
the afternoon. A light chop on the bay. A chance of showers and
thunderstorms.
.TUESDAY NIGHT...East winds 5 to 10 knots, becoming southwest
early in the morning. A light chop on the bay. A chance of
showers and thunderstorms early in the evening. A slight chance of
showers in the late evening and overnight. A slight chance of
thunderstorms after midnight.
.WEDNESDAY...Northwest winds 5 to 10 knots, becoming northeast
late in the afternoon. A light chop on the bay. A slight chance
of showers and thunderstorms early in the morning.
.WEDNESDAY NIGHT...East winds 5 to 10 knots, becoming south early
in the morning. A light chop on the bay.

Winds and waves higher in and near thunderstorms.

$$

GMZ150-155-301830-
Gulf waters from Port Mansfield to the Rio Grande out 20 nm-
Gulf waters from Baffin Bay to Port Mansfield out 20 nm-
1242 AM CDT Sat Aug 30 2025

.TODAY...South winds 5 to 10 knots, becoming southeast late this
afternoon. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at
5 seconds.
.TONIGHT...Southeast winds around 10 knots, becoming south early
in the morning. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet
at 5 seconds and east 1 foot at 8 seconds.
.SUNDAY...South winds 5 to 10 knots, becoming southeast in the
afternoon. Seas 2 to 3 feet. Wave Detail: Southeast 1 foot at
4 seconds and east 1 foot at 8 seconds.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots, becoming south
early in the morning. Seas 2 to 3 feet. Wave Detail: Southeast
2 feet at 4 seconds and east 1 foot at 8 seconds. A slight chance
of showers after midnight. A slight chance of showers and
thunderstorms early in the morning.
.MONDAY...South winds around 5 knots, becoming east in the
afternoon. Seas 1 to 2 feet. Wave Detail: Southeast 2 feet at
5 seconds and east 1 foot at 8 seconds. A chance of showers with
a slight chance of thunderstorms.
.MONDAY NIGHT...East winds 5 to 10 knots, becoming southeast
after midnight. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet
at 5 seconds and east 1 foot at 2 seconds. A slight chance of
showers and thunderstorms in the evening, then a chance of
showers and thunderstorms after midnight.
.TUESDAY...North winds 5 to 10 knots, becoming northeast in the
afternoon. Seas 2 to 3 feet. A chance of showers and
thunderstorms until late afternoon, then a slight chance of
showers and thunderstorms late in the afternoon.
.TUESDAY NIGHT...Northeast winds 5 to 10 knots, becoming east
late in the evening, then becoming southeast after midnight,
becoming southwest early in the morning. Seas 2 to 3 feet. A
slight chance of showers and thunderstorms.
.WEDNESDAY...Northwest winds 5 to 10 knots, becoming northeast
late in the afternoon. Seas 2 to 3 feet. A slight chance of
showers and thunderstorms early in the morning.
.WEDNESDAY NIGHT...East winds 5 to 10 knots, becoming south early
in the morning. Seas 2 to 3 feet.

Winds and seas higher in and near thunderstorms.

$$

GMZ170-175-301830-
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-
1242 AM CDT Sat Aug 30 2025

.TODAY...South winds 5 to 10 knots, becoming southeast late this
afternoon. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at
5 seconds and east 1 foot at 9 seconds.
.TONIGHT...Southeast winds 5 to 10 knots, becoming south early in
the morning. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at
5 seconds and east 1 foot at 8 seconds.
.SUNDAY...South winds around 10 knots, diminishing to around
5 knots in the afternoon, then becoming southeast late in the
afternoon. Seas 2 to 3 feet. Wave Detail: South 2 feet at
4 seconds and east 1 foot at 8 seconds. A slight chance of
showers and thunderstorms in the morning.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3 feet.
Wave Detail: Southeast 2 feet at 4 seconds and east 1 foot at
8 seconds. A slight chance of showers and thunderstorms after
midnight.
.MONDAY...South winds around 5 knots, becoming east in the
afternoon. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at
5 seconds and east 1 foot at 8 seconds. A slight chance of
thunderstorms. A chance of showers until late afternoon, then a
slight chance of showers late in the afternoon.
.MONDAY NIGHT...East winds 5 to 10 knots, becoming southeast
after midnight. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet
at 5 seconds and east 1 foot at 8 seconds. A slight chance of
showers and thunderstorms in the evening, then a chance of
showers and thunderstorms after midnight.
.TUESDAY...North winds 5 to 10 knots, becoming around 10 knots
late in the afternoon. Seas 2 to 3 feet. A chance of showers and
thunderstorms until late afternoon, then a slight chance of
showers and thunderstorms late in the afternoon.
.TUESDAY NIGHT...Northeast winds around 10 knots, becoming east
late in the evening, then becoming southeast after midnight,
becoming west early in the morning. Seas 2 to 3 feet. A slight
chance of showers and thunderstorms early in the evening. A
chance of showers with a slight chance of thunderstorms after
midnight.
.WEDNESDAY...Northwest winds 5 to 10 knots, becoming north in the
afternoon. Seas 2 to 3 feet. A chance of showers with a slight
chance of thunderstorms early in the morning, then a slight
chance of showers and thunderstorms in the afternoon.
.WEDNESDAY NIGHT...Northeast winds 5 to 10 knots, becoming
southeast early in the morning. Seas 2 to 3 feet.

Winds and seas higher in and near thunderstorms.

$$