Coastal Waters Forecast
Issued by NWS Brownsville, TX

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773
FZUS54 KBRO 032103
CWFBRO

Coastal Waters Forecast for the Lower Texas Coast
National Weather Service Brownsville TX
403 PM CDT Thu Apr 3 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.

GMZ100-041015-
403 PM CDT Thu Apr 3 2025

.SYNOPSIS...Hazard marine conditions persist through Sunday with
strong southerly winds and high seas in advance of a Saturday
night and Sunday cold front. Winds and seas begin to improve
later Monday of next week.

$$

GMZ130-132-135-041015-
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-
403 PM CDT Thu Apr 3 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY MORNING...

.TONIGHT...Southeast winds 15 to 25 knots. Choppy on the bay.
.FRIDAY...Southeast winds 15 to 20 knots, increasing to 20 to 25
knots with gusts up to 30 knots in the afternoon. Rough on the
bay.
.FRIDAY NIGHT...Southeast winds 20 to 25 knots, becoming south
15 to 20 knots early in the morning. Gusts to 30 knots. Rough on
the bay, diminishing to choppy early in the morning.
.SATURDAY...South winds 10 to 15 knots, becoming southwest late
in the morning, then becoming northwest early in the afternoon,
becoming northeast late in the afternoon. A moderate chop on the
bay, diminishing to light chop in the afternoon.
.SATURDAY NIGHT...Northeast winds 10 to 15 knots, becoming north
15 to 20 knots after midnight, then increasing to 20 to 25 knots
with gusts up to 30 knots early in the morning. A moderate chop
on the bay, increasing to choppy after midnight, then increasing
to rough early in the morning. A slight chance of showers in the
late evening and overnight.
.SUNDAY...North winds 20 to 25 knots with gusts up to 30 knots,
diminishing to 15 to 20 knots in the afternoon. Rough on the bay,
diminishing to choppy in the afternoon.
.SUNDAY NIGHT...North winds 10 to 15 knots. A moderate chop on
the bay.
.MONDAY...North winds 10 to 15 knots, becoming northeast late in
the afternoon. A moderate chop on the bay.
.MONDAY NIGHT...Northeast winds 10 to 15 knots, becoming east
5 to 10 knots in the late evening and early morning, then
becoming around 5 knots early in the morning. A moderate chop on
the bay, diminishing to light chop in the late evening and early
morning, then diminishing to smooth early in the morning.
.TUESDAY...Southwest winds around 5 knots, becoming east in the
afternoon. Smooth on the bay, increasing to light chop in the
afternoon.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Light chop on the
bay.

$$

GMZ150-155-041015-
Gulf waters from Port Mansfield to the Rio Grande out 20 nm-
Gulf waters from Baffin Bay to Port Mansfield out 20 nm-
403 PM CDT Thu Apr 3 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY MORNING...

.TONIGHT...Southeast winds 15 to 20 knots. Seas 7 to 10 feet,
occasionally to 13 feet. Wave Detail: Southeast 8 feet at
9 seconds.
.FRIDAY...Southeast winds 15 to 20 knots. Gusts to 30 knots in
the afternoon. Seas 7 to 9 feet, occasionally to 11 feet. Wave
Detail: Southeast 8 feet at 9 seconds. Patchy fog early in the
morning.
.FRIDAY NIGHT...Southeast winds 20 to 25 knots with gusts up to
35 knots, becoming south 15 to 20 knots with gusts up to 30 knots
early in the morning. Seas 7 to 9 feet, occasionally to 11 feet.
Wave Detail: Southeast 9 feet at 9 seconds.
.SATURDAY...South winds 10 to 15 knots, becoming southwest early
in the afternoon, then becoming east late in the afternoon. Seas
6 to 9 feet, occasionally to 11 feet. Wave Detail: Southeast
9 feet at 9 seconds.
.SATURDAY NIGHT...Northeast winds 10 to 15 knots, becoming north
late in the evening, then increasing to 20 to 25 knots with gusts
up to 30 knots after midnight. Seas 6 to 8 feet, occasionally to
10 feet, building to 7 to 10 feet, occasionally to 13 feet after
midnight. Wave Detail: East 7 feet at 10 seconds, becoming east
9 feet at 10 seconds and northwest 6 feet at 6 seconds. A slight
chance of showers.
.SUNDAY...North winds 20 to 25 knots with gusts up to 30 knots,
diminishing to 15 to 20 knots late in the afternoon. Seas 9 to
14 feet, occasionally to 18 feet, subsiding to 9 to 12 feet,
occasionally to 15 feet in the afternoon. Wave Detail: North
12 feet at 7 seconds, becoming north 11 feet at 7 seconds. A
slight chance of showers early in the morning.
.SUNDAY NIGHT...North winds 15 to 20 knots. Seas 6 to 9 feet,
occasionally to 11 feet.
.MONDAY...North winds 15 to 20 knots, diminishing to 10 to
15 knots in the afternoon. Seas 5 to 7 feet, occasionally to
9 feet.
.MONDAY NIGHT...Northeast winds 10 to 15 knots, diminishing to
5 to 10 knots early in the morning. Seas 3 to 4 feet.
.TUESDAY...East winds 5 to 10 knots. Seas 2 to 3 feet.
.TUESDAY NIGHT...Southeast winds around 10 knots. Seas 2 to
3 feet.

$$

GMZ170-175-041015-
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-
403 PM CDT Thu Apr 3 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY MORNING...

.TONIGHT...Southeast winds 15 to 20 knots, increasing to 20 to
25 knots with gusts up to 30 knots late this evening and
overnight. Seas 8 to 11 feet, occasionally to 14 feet, building
to 10 to 12 feet, occasionally to 15 feet after midnight. Wave
Detail: Southeast 10 feet at 9 seconds.
.FRIDAY...Southeast winds 15 to 20 knots with gusts up to
30 knots, increasing to 20 to 25 knots with gusts up to 40 knots
in the afternoon. Seas 9 to 11 feet, occasionally to 14 feet.
Wave Detail: Southeast 10 feet at 9 seconds. Patchy fog early in
the morning.
.FRIDAY NIGHT...Southeast winds 20 to 25 knots with gusts up to
30 knots. Seas 9 to 12 feet, occasionally to 15 feet. Wave
Detail: Southeast 11 feet at 9 seconds.
.SATURDAY...South winds 15 to 20 knots with gusts up to 30 knots,
becoming southeast around 10 knots. Seas 8 to 10 feet,
occasionally to 13 feet. Wave Detail: Southeast 10 feet at
9 seconds. A slight chance of showers. A slight chance of
thunderstorms in the afternoon.
.SATURDAY NIGHT...East winds 10 to 15 knots, becoming north late
in the evening, then increasing to 20 to 25 knots with gusts up
to 30 knots after midnight. Seas 7 to 10 feet, occasionally to
13 feet. Wave Detail: Southeast 8 feet at 10 seconds and
northwest 6 feet at 6 seconds. A slight chance of showers early
in the evening. A slight chance of thunderstorms until early
morning. A chance of showers in the late evening and overnight.
.SUNDAY...North winds 25 to 30 knots, diminishing to 20 to
25 knots with gusts up to 30 knots in the afternoon. Seas 9 to
14 feet, occasionally to 18 feet. Wave Detail: North 12 feet at
8 seconds and east 8 feet at 9 seconds. A chance of showers early
in the morning.
.SUNDAY NIGHT...North winds around 20 knots. Seas 7 to 9 feet,
occasionally to 11 feet.
.MONDAY...North winds 15 to 20 knots. Seas 6 to 8 feet,
occasionally to 10 feet, subsiding to 4 to 6 feet, occasionally
to 8 feet in the afternoon.
.MONDAY NIGHT...Northeast winds 10 to 15 knots. Seas 3 to 5 feet.
.TUESDAY...Northeast winds 5 to 10 knots. Seas 2 to 4 feet.
.TUESDAY NIGHT...East winds 5 to 10 knots, becoming southeast
after midnight. Seas 2 to 3 feet.

Winds and seas higher in and near thunderstorms.

$$