414
FZUS54 KBRO 010540
CWFBRO

Coastal Waters Forecast for the Lower Texas Coast
National Weather Service Brownsville TX
1240 AM CDT Mon Sep 1 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.

GMZ100-011815-
1240 AM CDT Mon Sep 1 2025

.SYNOPSIS...Light to moderate southerly to southeasterly winds
and low to moderate seas are forecast along the Lower Texas Coast
through the much of the period. The passage of a weak cold front
early in the week will briefly shift winds more easterly to
northerly today and Tuesday, with southeasterly flow returning
through the remainder of the week. The front is not expected to
bring a significant increase in wind speeds, and Small Craft
Should Exercise Caution headlines or Small Craft Advisories are
not likely to be needed.

$$

GMZ130-132-135-011815-
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-
1240 AM CDT Mon Sep 1 2025

.TODAY...Southwest winds around 5 knots, becoming north around
5 knots late this morning, then becoming northeast this
afternoon. Smooth on the bay, increasing to light chop this
afternoon. A slight chance of showers and thunderstorms late this
morning. A chance of showers and thunderstorms this afternoon.
.TONIGHT...East winds 5 to 10 knots, becoming southeast after
midnight, then becoming west early in the morning. Light chop on
the bay, diminishing to smooth after midnight. A slight chance of
showers and thunderstorms after midnight. A chance of showers and
thunderstorms early in the morning.
.TUESDAY...Northwest winds 5 to 10 knots, becoming northeast in
the afternoon. Smooth on the bay, increasing to light chop in the
afternoon. A chance of showers and thunderstorms.
.TUESDAY NIGHT...East winds 5 to 10 knots, becoming around
5 knots after midnight, then becoming southwest early in the
morning. Light chop on the bay, diminishing to smooth after
midnight. A chance of showers and thunderstorms early in the
evening, then a slight chance of showers in the late evening and
overnight.
.WEDNESDAY...Northwest winds around 5 knots, becoming north late
in the morning, then becoming northeast early in the afternoon,
becoming around 10 knots late in the afternoon. Smooth on the
bay, increasing to light chop in the afternoon.
.WEDNESDAY NIGHT...East winds 5 to 10 knots, becoming south early
in the morning. Light chop on the bay, diminishing to smooth
early in the morning.
.THURSDAY...Southwest winds around 5 knots, becoming east in the
afternoon. Smooth on the bay, increasing to light chop in the
afternoon.
.THURSDAY NIGHT...Southeast winds around 10 knots, becoming 5 to
10 knots after midnight. Light chop on the bay.
.FRIDAY...South winds 5 to 10 knots, becoming southeast in the
afternoon. Smooth on the bay, increasing to light chop in the
afternoon.
.FRIDAY NIGHT...Southeast winds 5 to 10 knots. Light chop on the
bay. A slight chance of showers and thunderstorms after midnight.

Winds and waves higher in and near thunderstorms.

$$

GMZ150-155-011815-
Gulf waters from Port Mansfield to the Rio Grande out 20 nm-
Gulf waters from Baffin Bay to Port Mansfield out 20 nm-
1240 AM CDT Mon Sep 1 2025

.TODAY...South winds around 5 knots, becoming northwest around
5 knots late this morning, then becoming northeast this
afternoon. Seas 1 to 2 feet. Wave Detail: Southeast 1 foot at
4 seconds and east 1 foot at 8 seconds. A slight chance of
showers and thunderstorms.
.TONIGHT...East winds 5 to 10 knots, becoming southeast after
midnight, then becoming west early in the morning. Seas 1 to
2 feet. Wave Detail: Northeast 1 foot at 3 seconds and southeast
1 foot at 8 seconds. A slight chance of showers and thunderstorms
after midnight. A chance of showers and thunderstorms early in
the morning.
.TUESDAY...Northwest winds 5 to 10 knots, becoming north in the
afternoon. Seas 1 to 2 feet. Wave Detail: Northeast 2 feet at
4 seconds and southeast 1 foot at 4 seconds. A chance of showers
and thunderstorms until late afternoon, then a slight chance of
showers and thunderstorms late in the afternoon.
.TUESDAY NIGHT...Northeast winds 5 to 10 knots, becoming east
after midnight, then becoming northeast early in the morning.
Seas 2 to 3 feet. Wave Detail: Northeast 2 feet at 4 seconds and
east 1 foot at 8 seconds. A slight chance of showers. A slight
chance of thunderstorms early in the evening. A slight chance of
thunderstorms after midnight.
.WEDNESDAY...North winds 5 to 10 knots, becoming northeast late
in the afternoon. Seas 1 to 2 feet. Wave Detail: Northwest 1 foot
at 3 seconds and east 1 foot at 6 seconds. A slight chance of
showers early in the morning.
.WEDNESDAY NIGHT...East winds around 10 knots, becoming southeast
late in the evening, then becoming southeast 5 to 10 knots after
midnight, becoming south early in the morning. Seas 2 to 3 feet.
Wave Detail: East 1 foot at 4 seconds and east 1 foot at
7 seconds.
.THURSDAY...Southwest winds around 5 knots, becoming east in the
afternoon. Seas 1 to 2 feet.
.THURSDAY NIGHT...Southeast winds around 10 knots, becoming 5 to
10 knots after midnight. Seas 1 to 2 feet.
.FRIDAY...Southeast winds 5 to 10 knots. Seas 1 to 2 feet.
.FRIDAY NIGHT...Southeast winds around 10 knots. Seas 2 to
3 feet. A slight chance of showers and thunderstorms after
midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ170-175-011815-
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-
1240 AM CDT Mon Sep 1 2025

.TODAY...Southwest winds around 5 knots, becoming northwest late
this morning, then becoming north early this afternoon, becoming
northeast late this afternoon. Seas 1 to 2 feet. Wave Detail:
South 1 foot at 4 seconds and east 1 foot at 8 seconds. A chance
of showers and thunderstorms until late afternoon, then a slight
chance of showers and thunderstorms late this afternoon.
.TONIGHT...Northeast winds 5 to 10 knots, becoming east after
midnight, then becoming west early in the morning. Seas 1 to
2 feet. Wave Detail: Northeast 1 foot at 3 seconds and southeast
1 foot at 8 seconds. A slight chance of showers and thunderstorms
after midnight. A chance of showers and thunderstorms early in
the morning.
.TUESDAY...Northwest winds 5 to 10 knots, becoming north in the
afternoon. Seas 1 to 2 feet. Wave Detail: Northeast 2 feet at
4 seconds and southeast 1 foot at 8 seconds. Showers likely with
a chance of thunderstorms until late afternoon, then a chance of
showers with a slight chance of thunderstorms late in the
afternoon.
.TUESDAY NIGHT...Northeast winds 5 to 10 knots. Seas 2 to 3 feet.
Wave Detail: Northeast 2 feet at 4 seconds and east 1 foot at
8 seconds. A slight chance of showers. A slight chance of
thunderstorms early in the evening. A slight chance of
thunderstorms after midnight.
.WEDNESDAY...North winds 5 to 10 knots, becoming northeast late
in the afternoon. Seas 2 to 3 feet. Wave Detail: Northeast 2 feet
at 4 seconds and east 1 foot at 8 seconds. A slight chance of
showers and thunderstorms until late afternoon.
.WEDNESDAY NIGHT...Northeast winds 5 to 10 knots, becoming south
early in the morning. Seas 2 to 3 feet. Wave Detail: North 1 foot
at 4 seconds and east 1 foot at 7 seconds.
.THURSDAY...Southwest winds around 5 knots, becoming northwest
late in the morning, then becoming northeast early in the
afternoon, becoming east late in the afternoon. Seas 1 to 2 feet.
.THURSDAY NIGHT...East winds 5 to 10 knots, becoming southeast
after midnight. Seas 1 to 2 feet.
.FRIDAY...Southeast winds 5 to 10 knots. Seas 1 to 2 feet. A
slight chance of showers until late afternoon.
.FRIDAY NIGHT...Southeast winds around 10 knots. Seas 2 to
3 feet. A chance of showers with a slight chance of thunderstorms
after midnight.

Winds and seas higher in and near thunderstorms.

$$