182
FZUS54 KBRO 182018
CWFBRO

Coastal Waters Forecast for the Lower Texas Coast
National Weather Service Brownsville TX
318 PM CDT Fri Apr 18 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.

GMZ100-190315-
318 PM CDT Fri Apr 18 2025

.SYNOPSIS...A Small Craft Advisory continues for all Lower Texas
coastal waters (0-60 nm) through Saturday evening as fresh to
strong south-southeasterly winds, with strong to near gale gusts,
and moderate seas continue as a tight pressure gradient remains
over the Lower Texas coastal waters. Conditions improve on Sunday
as the gradient relaxes, with gentle to moderate southeasterly
winds, becoming easterly on Monday. Moderate onshore winds and
and a moderate sea state can be expected next Tuesday and for the
middle portion of next week. The approach and stall of a frontal
boundary will bring a chance of showers and thunderstorms Sunday
and much of next week.

$$

GMZ130-132-135-190315-
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-
318 PM CDT Fri Apr 18 2025

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

.TONIGHT...Southeast winds 20 to 25 knots with gusts up to
30 knots, diminishing to 15 to 20 knots with gusts up to 30 knots
late this evening and overnight. Rough on the bay, diminishing to
choppy late this evening and overnight.
.SATURDAY...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.
.SATURDAY NIGHT...Southeast winds 20 to 25 knots with gusts up to
30 knots, diminishing to 15 to 20 knots after midnight. Rough on
the bay, diminishing to choppy after midnight.
.SUNDAY...Southeast winds 10 to 15 knots. A moderate chop on the
bay. A slight chance of showers in the morning. A slight chance
of thunderstorms late in the morning, then a chance of showers
and thunderstorms in the afternoon.
.SUNDAY NIGHT...Southeast winds 10 to 15 knots, diminishing to
5 to 10 knots after midnight. Light chop on the bay. A slight
chance of thunderstorms in the evening. A chance of showers. A
chance of thunderstorms after midnight.
.MONDAY...Southeast winds 5 to 10 knots, becoming east late in
the afternoon. Light chop on the bay. A chance of thunderstorms
in the morning. A chance of showers. A slight chance of
thunderstorms in the afternoon.
.MONDAY NIGHT...East winds 5 to 10 knots. Light chop on the bay.
A slight chance of showers and thunderstorms early in the
evening.
.TUESDAY...Southeast winds 5 to 10 knots, increasing to 10 to
15 knots in the afternoon. Light chop on the bay, increasing to a
moderate chop in the afternoon. A chance of showers. A slight
chance of thunderstorms in the morning, then a chance of
thunderstorms in the afternoon.
.TUESDAY NIGHT...Southeast winds 10 to 15 knots. A moderate chop
on the bay. A chance of showers and thunderstorms.
.WEDNESDAY...Southeast winds 10 to 15 knots, increasing to 15 to
20 knots late in the afternoon. A moderate chop on the bay,
increasing to choppy late in the afternoon. A slight chance of
showers and thunderstorms.
.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.

Winds and waves higher in and near thunderstorms.

$$

GMZ150-155-190315-
Gulf waters from Port Mansfield to the Rio Grande out 20 nm-
Gulf waters from Baffin Bay to Port Mansfield out 20 nm-
318 PM CDT Fri Apr 18 2025

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

.TONIGHT...Southeast winds 15 to 20 knots with gusts up to 25
knots, increasing 20 to 25 knots with higher gusts after
midnight. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail:
Southeast 6 feet at 7 seconds.
.SATURDAY...Southeast winds 15 to 20 knots. Gusts to 30 knots
late in the afternoon. Seas 5 to 7 feet, occasionally to 9 feet.
Wave Detail: Southeast 6 feet at 8 seconds.
.SATURDAY NIGHT...Southeast winds 15 to 20 knots. Gusts to
30 knots early in the evening. Seas 6 to 8 feet, occasionally to
10 feet. Wave Detail: Southeast 7 feet at 8 seconds.
.SUNDAY...Southeast winds 15 to 20 knots, diminishing to 10 to
15 knots in the afternoon. Seas 5 to 7 feet, occasionally to
9 feet. Wave Detail: Southeast 7 feet at 8 seconds. A slight
chance of showers in the morning. A slight chance of
thunderstorms in the afternoon. A chance of showers in the
afternoon.
.SUNDAY NIGHT...Southeast winds 10 to 15 knots, diminishing to
5 to 10 knots early in the morning. Seas 5 to 7 feet,
occasionally to 9 feet. Wave Detail: East 6 feet at 9 seconds. A
slight chance of thunderstorms in the evening. A chance of
showers. A chance of thunderstorms after midnight.
.MONDAY...Southeast winds 5 to 10 knots, becoming east late in
the afternoon. Seas 4 to 5 feet. Wave Detail: East 5 feet at
9 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 around 10 knots, becoming southeast
early in the morning. Seas 4 to 5 feet.
.TUESDAY...Southeast winds 10 to 15 knots. Seas 4 to 5 feet. A
slight chance of thunderstorms. A chance of showers until late
afternoon, then a slight chance of showers late in the afternoon.
.TUESDAY NIGHT...Southeast winds 10 to 15 knots. Seas 4 to
5 feet. A slight chance of thunderstorms. A slight chance of
showers early in the evening, then a chance of showers in the
late evening and overnight.
.WEDNESDAY...Southeast winds 10 to 15 knots. Seas 4 to 5 feet. A
slight chance of showers and thunderstorms.
.WEDNESDAY NIGHT...Southeast winds 10 to 15 knots. Seas 4 to
5 feet. A slight chance of showers and thunderstorms early in the
evening.

Winds and seas higher in and near thunderstorms.

$$

GMZ170-175-190315-
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-
318 PM CDT Fri Apr 18 2025

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

.TONIGHT...Southeast winds 15 to 20 knots with gusts up to 25
knots, increasing 20 to 25 knots with higher gusts after
midnight. Seas 6 to 8 feet, occasionally to 10 feet. Wave Detail:
Southeast 7 feet at 7 seconds.
.SATURDAY...Southeast winds 15 to 20 knots. Seas 6 to 8 feet,
occasionally to 10 feet. Wave Detail: Southeast 7 feet at
8 seconds.
.SATURDAY NIGHT...Southeast winds 20 to 25 knots, diminishing to
15 to 20 knots early in the morning. Seas 7 to 9 feet,
occasionally to 11 feet. Wave Detail: Southeast 8 feet at
8 seconds.
.SUNDAY...Southeast winds 15 to 20 knots, diminishing to 10 to
15 knots in the afternoon. Seas 6 to 8 feet, occasionally to
10 feet. Wave Detail: Southeast 7 feet at 8 seconds. A slight
chance of showers. A slight chance of thunderstorms in the
afternoon.
.SUNDAY NIGHT...Southeast winds 10 to 15 knots. Seas 6 to 8 feet,
occasionally to 10 feet. Wave Detail: Southeast 7 feet at
9 seconds. A slight chance of showers and thunderstorms.
.MONDAY...Southeast winds 5 to 10 knots, becoming east late in
the afternoon. Seas 5 to 7 feet, occasionally to 9 feet,
subsiding to 4 to 5 feet in the afternoon. Wave Detail: East
5 feet at 9 seconds, becoming east 5 feet at 8 seconds. A chance
of showers with a slight chance of thunderstorms until late
afternoon.
.MONDAY NIGHT...East winds around 10 knots, becoming southeast
after midnight. Seas 4 to 5 feet.
.TUESDAY...Southeast winds 10 to 15 knots. Seas 4 to 5 feet. A
slight chance of thunderstorms until late afternoon. A slight
chance of showers.
.TUESDAY NIGHT...Southeast winds 10 to 15 knots. Seas 4 to
5 feet. A slight chance of showers and thunderstorms.
.WEDNESDAY...Southeast winds 10 to 15 knots. Seas 4 to 5 feet. A
slight chance of showers and thunderstorms.
.WEDNESDAY NIGHT...Southeast winds 10 to 15 knots. Seas 4 to
5 feet, building to 5 to 7 feet, occasionally to 9 feet after
midnight.

Winds and seas higher in and near thunderstorms.

$$