784
FZUS54 KBRO 171753
CWFBRO

Coastal Waters Forecast for the Lower Texas Coast
National Weather Service Brownsville TX
1253 PM CDT Fri Oct 17 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.

GMZ100-180615-
1253 PM CDT Fri Oct 17 2025

.SYNOPSIS...Weak high pressure across the eastern Gulf will
spread west Saturday and Saturday night, with light to moderate
east to southeast flow and slight to moderate seas. A wind shift
is likely early Sunday, with moderate north, then northeast winds
and a longer fetch potentially increasing seas more into moderate
levels by late afternoon, continuing through Monday. A return to
light to moderate southeast winds is expected later Monday through
early Wednesday, before easterly flow returns. A generally long
easterly fetch may keep wave period at 7 feet or higher beginning
late Sunday, with seas potentially a bit higher than forecast.


$$

GMZ130-132-135-180615-
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-
1253 PM CDT Fri Oct 17 2025

.REST OF THIS AFTERNOON...East winds 10 knots. A light chop on the
bay.
TONIGHT...Southeast winds 5 to 10 knots, becoming south after
midnight. Light chop on the bay.
.SATURDAY...South winds 5 to 10 knots, becoming southeast 10 to
15 knots in the afternoon. Light chop on the bay, increasing to a
moderate chop in the afternoon.
.SATURDAY NIGHT...Southeast winds 10 to 15 knots, becoming south
5 to 10 knots after midnight. Light chop on the bay.
.SUNDAY...Southwest winds around 5 knots, becoming northwest late
in the morning, then becoming northeast 10 to 15 knots in the
afternoon. Smooth on the bay, increasing to light chop late in
the morning, then increasing to a moderate chop in the afternoon.
.SUNDAY NIGHT...East winds 10 to 15 knots, diminishing to 5 to
10 knots after midnight. Light chop on the bay.
.MONDAY...Southeast winds 5 to 10 knots. Light chop on the bay.
.MONDAY NIGHT...Southeast winds 10 to 15 knots, becoming south
early in the morning. A moderate chop on the bay, diminishing to
light chop early in the morning.
.TUESDAY...South winds 5 to 10 knots, becoming southeast early in
the afternoon, then becoming east 10 to 15 knots late in the
afternoon. Light chop on the bay, increasing to a moderate chop
late in the afternoon.
.TUESDAY NIGHT...Southeast winds around 10 knots. Light chop on
the bay.
.WEDNESDAY...Southeast winds 10 to 15 knots. A moderate chop on
the bay.
.WEDNESDAY NIGHT...Southeast winds 10 to 15 knots. A moderate
chop on the bay.

$$

GMZ150-155-180615-
Gulf waters from Port Mansfield to the Rio Grande out 20 nm-
Gulf waters from Baffin Bay to Port Mansfield out 20 nm-
1253 PM CDT Fri Oct 17 2025

.TONIGHT...Southeast winds 5 to 10 knots, becoming south after
midnight. Seas 2 to 3 feet. Wave Detail: East 3 feet at 7
seconds.
.SATURDAY...South winds around 10 knots, becoming southeast late
in the afternoon. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet
at 6 seconds.
.SATURDAY NIGHT...Southeast winds around 10 knots, becoming south
after midnight. Seas 2 to 3 feet. Wave Detail: East 2 feet at
6 seconds.
.SUNDAY...Southwest winds around 5 knots, becoming northwest late
in the morning, then becoming northeast 10 to 15 knots in the
afternoon. Seas 2 to 3 feet building to 3 to 4 feet. Wave Detail:
Northeast 2 feet at 3 seconds and southeast 2 feet at 5 seconds.
.SUNDAY NIGHT...East winds 10 to 15 knots, becoming around
10 knots after midnight. Seas 3 to 4 feet. Wave Detail: East
3 feet at 7 seconds and northeast 2 feet at 4 seconds.
.MONDAY...Southeast winds 5 to 10 knots. Seas 3 to 4 feet. Wave
Detail: East 3 feet at 7 seconds.
.MONDAY NIGHT...Southeast winds 10 to 15 knots, becoming south
early in the morning. Seas 2 to 4 feet.
.TUESDAY...South winds 5 to 10 knots, becoming southeast in the
afternoon. Seas 2 to 3 feet.
.TUESDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to
3 feet.
.WEDNESDAY...Southeast winds around 10 knots. Seas 2 to 3 feet.
.WEDNESDAY NIGHT...Southeast winds 10 to 15 knots, becoming
around 15 knots early in the morning. Seas 2 to 3 feet.

$$

GMZ170-175-180615-
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-
1253 PM CDT Fri Oct 17 2025

.TONIGHT...Southeast winds 5 to 10 knots, becoming south after
midnight. Seas 2 to 3 feet. Wave Detail: East 3 feet at 6
seconds. A slight chance of showers early this evening.
.SATURDAY...South winds around 10 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 3 feet at 5 seconds.
.SATURDAY NIGHT...South winds around 10 knots, becoming southwest
early in the morning. Seas 2 to 3 feet. Wave Detail: Southeast
2 feet at 5 seconds.
.SUNDAY...West winds around 5 knots, becoming northwest late in
the morning, then becoming northeast 10 to 15 knots in the
afternoon. Seas 2 to 3 feet building to 3 to 5 feet. Wave Detail:
Northeast 2 feet at 3 seconds and southeast 2 feet at 5 seconds.
A slight chance of showers. A slight chance of thunderstorms in
the afternoon.
.SUNDAY NIGHT...East winds 10 to 15 knots, becoming around
10 knots early in the morning. Seas 3 to 5 feet. Wave Detail:
East 3 feet at 7 seconds and northeast 2 feet at 3 seconds.
.MONDAY...Southeast winds 5 to 10 knots. Seas 3 to 4 feet. Wave
Detail: East 3 feet at 7 seconds.
.MONDAY NIGHT...Southeast winds 10 to 15 knots, becoming south
early in the morning. Seas 3 to 4 feet.
.TUESDAY...South winds 5 to 10 knots, becoming southeast in the
afternoon. Seas 2 to 3 feet.
.TUESDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet.
.WEDNESDAY...East winds around 10 knots. Seas 2 to 3 feet.
.WEDNESDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to
3 feet.

Winds and seas higher in and near thunderstorms.

$$

52/BSG