Coastal Waters Forecast
Issued by NWS Brownsville, TX

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900
FZUS54 KBRO 222006
CWFBRO

Coastal Waters Forecast for the Lower Texas Coast
National Weather Service Brownsville TX
306 PM CDT Thu May 22 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.

GMZ100-230915-
306 PM CDT Thu May 22 2025

.SYNOPSIS...Favorable conditions will prevail through Friday with
light to moderate winds and low to moderate seas. Winds and seas
are expected to increase this weekend as the pressure gradient
strengthens.

$$

GMZ130-132-135-230915-
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-
306 PM CDT Thu May 22 2025

.TONIGHT...Southeast winds 5 to 10 knots. Light chop on the bay.
.FRIDAY...Southeast winds 5 to 10 knots increasing to 10 to
15 knots in the afternoon. Light chop on the bay becoming a
moderate chop in the afternoon.
.FRIDAY NIGHT...Southeast winds 10 to 15 knots. A moderate chop
on the bay.
.SATURDAY...Southeast winds 10 to 15 knots increasing to 15 to
20 knots in the afternoon. A moderate chop on the bay becoming
choppy in the afternoon.
.SATURDAY NIGHT...Southeast winds 10 to 15 knots. A moderate chop
on the bay.
.SUNDAY...Southeast winds 15 to 20 knots. Choppy on the bay.
.SUNDAY NIGHT...Southeast winds 15 to 20 knots. Choppy on the
bay.
.MONDAY...Southeast winds 15 to 20 knots. Choppy on the bay. A
slight chance of showers and thunderstorms in the afternoon.
.MONDAY NIGHT...Southeast winds 10 to 15 knots. A moderate chop
on the bay. A slight chance of showers and thunderstorms.
.TUESDAY...Southeast winds 10 to 15 knots. A moderate chop on the
bay. A chance of showers with a slight chance of thunderstorms.
.TUESDAY NIGHT...East winds 10 to 15 knots becoming southeast
5 to 10 knots after midnight. A moderate chop on the bay becoming
light chop after midnight. A slight chance of showers and
thunderstorms in the evening, then a chance of showers and
thunderstorms after midnight.

Winds and waves higher in and near thunderstorms.

$$

GMZ150-155-230915-
Gulf waters from Port Mansfield to the Rio Grande out 20 nm-
Gulf waters from Baffin Bay to Port Mansfield out 20 nm-
306 PM CDT Thu May 22 2025

.TONIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 2 feet at 7 seconds.
.FRIDAY...Southeast winds 5 to 10 knots increasing to 10 to
15 knots in the afternoon. Seas 2 to 3 feet. Wave Detail:
Southeast 2 feet at 6 seconds.
.FRIDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to 4 feet.
Wave Detail: Southeast 3 feet at 5 seconds.
.SATURDAY...Southeast winds 10 to 15 knots. Seas 3 to 4 feet.
Wave Detail: Southeast 4 feet at 6 seconds.
.SATURDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to
5 feet. Wave Detail: Southeast 4 feet at 6 seconds.
.SUNDAY...Southeast winds 15 to 20 knots. Seas 4 to 5 feet. Wave
Detail: Southeast 4 feet at 6 seconds.
.SUNDAY NIGHT...Southeast winds 15 to 20 knots. Seas 4 to 5 feet.
.MONDAY...Southeast winds 15 to 20 knots. Seas 4 to 6 feet, with
occasional seas up to 7 feet. A slight chance of showers in the
afternoon.
.MONDAY NIGHT...Southeast winds 10 to 15 knots. Seas 4 to 5 feet.
A slight chance of showers and thunderstorms.
.TUESDAY...Southeast winds 10 to 15 knots. Seas 3 to 5 feet. A
chance of showers with a slight chance of thunderstorms.
.TUESDAY NIGHT...Southeast winds around 10 knots. Seas 3 to
4 feet. A slight chance of showers in the evening. A slight
chance of thunderstorms. A chance of showers after midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ170-175-230915-
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-
306 PM CDT Thu May 22 2025

.TONIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 2 feet at 7 seconds.
.FRIDAY...Southeast winds around 10 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 2 feet at 6 seconds.
.FRIDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to 4 feet.
Wave Detail: Southeast 3 feet at 6 seconds.
.SATURDAY...Southeast winds 10 to 15 knots. Seas 3 to 4 feet.
Wave Detail: Southeast 4 feet at 5 seconds.
.SATURDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to
5 feet. Wave Detail: Southeast 4 feet at 6 seconds.
.SUNDAY...Southeast winds 15 to 20 knots. Seas 4 to 5 feet. Wave
Detail: Southeast 5 feet at 6 seconds.
.SUNDAY NIGHT...Southeast winds 15 to 20 knots. Seas 4 to 6 feet,
with occasional seas up to 7 feet.
.MONDAY...Southeast winds 15 to 20 knots decreasing to 10 to
15 knots in the afternoon. Seas 4 to 6 feet, with occasional seas
up to 7 feet.
.MONDAY NIGHT...Southeast winds 10 to 15 knots. Seas 4 to 5 feet.
A slight chance of showers and thunderstorms.
.TUESDAY...Southeast winds 10 to 15 knots. Seas 4 to 5 feet. A
chance of showers with a slight chance of thunderstorms.
.TUESDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to
5 feet. A slight chance of showers in the evening, then a chance
of showers with a slight chance of thunderstorms after midnight.

Winds and seas higher in and near thunderstorms.

$$