Coastal Waters Forecast
Issued by NWS Brownsville, TX

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FZUS54 KBRO 081734
CWFBRO

Coastal Waters Forecast for the Lower Texas Coast
National Weather Service Brownsville TX
1234 PM CDT Tue Jul 8 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.

GMZ100-090615-
1234 PM CDT Tue Jul 8 2025

.SYNOPSIS...Gentle to moderate south-southeasterly flow and
relatively low seas will prevail throughout the week. A westward
moving trough in the Gulf approaching the Texas coast early this
week will maintain low to medium (20-40%) chances of isolated to
scattered showers and thunderstorms each day before decreasing to
low (less than 10%) by Wednesday night. Small Craft Exercise
Caution conditions are possible later in the week as some of the
winds pick up on the bay and in the Gulf waters.

$$

GMZ130-132-135-090615-
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-
1234 PM CDT Tue Jul 8 2025

.TONIGHT...Southeast winds 10 to 15 knots, becoming south 5 to
10 knots early this morning. A moderate chop on the bay,
diminishing to light chop early this morning.
.WEDNESDAY...South winds 5 to 10 knots, becoming southeast 10 to
15 knots in the afternoon. A moderate chop on the bay. Hazy. A
slight chance of showers and thunderstorms in the afternoon. A
chance of showers and thunderstorms late in the afternoon.
.WEDNESDAY NIGHT...Southeast winds 10 to 15 knots. A moderate
chop on the bay. A slight chance of showers and thunderstorms
early in the evening. Hazy.
.THURSDAY...Southeast winds 10 to 15 knots. A moderate chop on
the bay. Hazy.
.THURSDAY NIGHT...Southeast winds 10 to 15 knots. A moderate chop
on the bay. Hazy.
.FRIDAY...Southeast winds 10 to 15 knots, increasing to 15 to
20 knots in the afternoon. Choppy on the bay. Hazy in the
morning.
.FRIDAY NIGHT...Southeast 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.
.SATURDAY...Southeast winds 10 to 15 knots. A moderate chop on
the bay. A slight chance of showers and thunderstorms.
.SATURDAY NIGHT...Southeast winds 10 to 15 knots. A moderate chop
on the bay. A slight chance of thunderstorms early in the
evening. A slight chance of showers.
.SUNDAY...Southeast winds 10 to 15 knots. A moderate chop on the
bay. A slight chance of thunderstorms. A chance of showers until
late afternoon, then a slight chance of showers late in the
afternoon.
.SUNDAY NIGHT...Southeast winds 10 to 15 knots. A moderate chop
on the bay. A slight chance of showers and thunderstorms early in
the evening.

Winds and waves higher in and near thunderstorms.

$$

GMZ150-155-090615-
Gulf waters from Port Mansfield to the Rio Grande out 20 nm-
Gulf waters from Baffin Bay to Port Mansfield out 20 nm-
1234 PM CDT Tue Jul 8 2025

.TONIGHT...Southeast winds 10 to 15 knots, becoming south early
this morning. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at
6 seconds.
.WEDNESDAY...South winds around 10 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 2 feet at 6 seconds. A slight chance of showers
and thunderstorms. Hazy.
.WEDNESDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet.
Wave Detail: Southeast 3 feet at 6 seconds. Hazy.
.THURSDAY...South winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 3 feet at 6 seconds. Hazy.
.THURSDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to
4 feet. Wave Detail: Southeast 3 feet at 6 seconds. Hazy.
.FRIDAY...Southeast winds around 15 knots. Seas 3 to 4 feet. Wave
Detail: Southeast 3 feet at 5 seconds. Hazy in the morning.
.FRIDAY NIGHT...Southeast winds around 15 knots. Seas 3 to
4 feet. A slight chance of showers after midnight.
.SATURDAY...Southeast winds 10 to 15 knots. Seas 3 to 4 feet. A
slight chance of showers and thunderstorms.
.SATURDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to
4 feet. A slight chance of thunderstorms early in the evening. A
slight chance of showers in the evening, then a chance of showers
after midnight.
.SUNDAY...Southeast winds 10 to 15 knots. Seas 3 to 4 feet. A
chance of showers with a slight chance of thunderstorms until
late afternoon, then a slight chance of showers late in the
afternoon.
.SUNDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to 4 feet.
A slight chance of showers early in the evening. A slight chance
of showers after midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ170-175-090615-
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-
1234 PM CDT Tue Jul 8 2025

.TONIGHT...Southeast winds around 10 knots, becoming south early
this morning. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at
6 seconds. A slight chance of showers early this evening.
.WEDNESDAY...South winds around 10 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 2 feet at 6 seconds. A slight chance of
thunderstorms. A chance of showers early in the morning, then a
slight chance of showers in the afternoon. Hazy.
.WEDNESDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet.
Wave Detail: Southeast 3 feet at 6 seconds. Hazy.
.THURSDAY...South winds around 10 knots. Seas 3 to 4 feet. Wave
Detail: Southeast 3 feet at 6 seconds. Hazy.
.THURSDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to
4 feet. Wave Detail: Southeast 3 feet at 6 seconds. Hazy.
.FRIDAY...South winds around 15 knots. Seas 3 to 4 feet. Wave
Detail: Southeast 3 feet at 6 seconds. Hazy in the morning.
.FRIDAY NIGHT...Southeast winds around 15 knots. Seas 3 to
4 feet. A slight chance of showers and thunderstorms after
midnight.
.SATURDAY...Southeast winds 10 to 15 knots. Seas 3 to 4 feet. A
chance of showers with a slight chance of thunderstorms.
.SATURDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to
4 feet. A slight chance of thunderstorms early in the evening. A
slight chance of showers in the evening, then a chance of showers
after midnight.
.SUNDAY...Southeast winds 10 to 15 knots. Seas 3 to 4 feet. A
chance of showers with a slight chance of thunderstorms until
late afternoon, then a slight chance of showers late in the
afternoon.
.SUNDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to 4 feet.
A slight chance of showers early in the evening. A slight chance
of showers after midnight. A slight chance of thunderstorms early
in the morning.

Winds and seas higher in and near thunderstorms.

$$