443
FZUS54 KBRO 260232
CWFBRO

Coastal Waters Forecast for the Lower Texas Coast
National Weather Service Brownsville TX
932 PM CDT Wed Sep 25 2024

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.

GMZ100-261545-
932 PM CDT Wed Sep 25 2024

.SYNOPSIS...Hurricane Helene is currently moving northwestward in
the Gulf of Mexico and is expected to undergo significant
strengthening as it moves to north or north-northeast through the
eastern Gulf of Mexico before making landfall as a major
hurricane along the Florida Big Bend coast Thursday evening.
Resulting swell is anticipated to begin building wave heights and
seas Thursday morning. Meanwhile, a weak cold front is expected
to pass through the Lower Texas Coast tonight into tomorrow
morning, which may result in a slight to low chance of showers and
thunderstorms ahead of the front, followed by a brief period of
moderate to fresh northerly winds through Thursday evening. The
combined effects of the winds in the wake of the front`s passage
as well as the arriving swell will likely warrant the issuance of
Small Craft Exercise Caution and Small Craft Advisories Thursday
into Friday.

$$

GMZ130-132-135-261545-
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-
932 PM CDT Wed Sep 25 2024

.REST OF TONIGHT...East winds around 5 knots, becoming northwest.
Light chop on the bay. A chance of showers and thunderstorms late
this evening, then a slight chance of showers and thunderstorms.
.THURSDAY...North winds 10 to 15 knots. A moderate chop on the
bay.
.THURSDAY NIGHT...Northeast winds 10 to 15 knots, diminishing to
5 to 10 knots in the late evening and early morning, then
becoming north 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.
.FRIDAY...Northwest winds 5 to 10 knots, becoming northeast late
in the afternoon. Light chop on the bay.
.FRIDAY NIGHT...East winds around 5 knots, becoming southwest
early in the morning. Smooth on the bay.
.SATURDAY...West winds around 5 knots, becoming northeast late in
the afternoon. Smooth on the bay.
.SATURDAY NIGHT...East winds around 5 knots, becoming southwest
early in the morning. Smooth on the bay.
.SUNDAY...West winds around 5 knots, becoming northeast late in
the afternoon. Smooth on the bay, increasing to light chop late
in the afternoon.
.SUNDAY NIGHT...East winds 5 to 10 knots, becoming south early in
the morning. Light chop on the bay, diminishing to smooth after
midnight.
.MONDAY...North winds around 5 knots, becoming northeast in the
afternoon. Smooth on the bay, increasing to light chop in the
afternoon.
.MONDAY NIGHT...East winds 5 to 10 knots. Light chop on the bay.

Winds and waves higher in and near thunderstorms.

$$

GMZ150-155-261545-
Gulf waters from Port Mansfield to the Rio Grande out 20 nm-
Gulf waters from Baffin Bay to Port Mansfield out 20 nm-
932 PM CDT Wed Sep 25 2024

.REST OF TONIGHT...East winds around 5 knots, becoming north,
then becoming northwest 10 to 15 knots early this morning. Seas
1 to 2 feet. Wave Detail: East 2 feet at 5 seconds. A slight
chance of showers and thunderstorms late this evening. A chance
of showers and thunderstorms, then a slight chance of showers and
thunderstorms early this morning.
.THURSDAY...North winds 10 to 15 knots. Seas 2 to 4 feet,
building to 4 to 6 feet, occasionally to 8 feet in the afternoon.
Wave Detail: Northeast 4 feet at 5 seconds and north 2 feet at
2 seconds, becoming northeast 5 feet at 7 seconds and northwest
2 feet at 4 seconds. A slight chance of showers and thunderstorms
early in the morning.
.THURSDAY NIGHT...Northeast winds 10 to 15 knots, becoming north
5 to 10 knots after midnight. Seas 5 to 7 feet, occasionally to
9 feet. Wave Detail: Northeast 5 feet at 8 seconds and northwest
2 feet at 4 seconds.
.FRIDAY...North winds 5 to 10 knots, becoming northeast late in
the afternoon. Seas 4 to 6 feet, occasionally to 8 feet. Wave
Detail: East 5 feet at 11 seconds.
.FRIDAY NIGHT...East winds around 5 knots, becoming southwest
early in the morning. Seas 3 to 4 feet. Wave Detail: East 4 feet
at 10 seconds.
.SATURDAY...West winds around 5 knots, becoming northeast late in
the afternoon. Seas 2 to 3 feet. Wave Detail: East 3 feet at
10 seconds.
.SATURDAY NIGHT...East winds around 5 knots, becoming southwest
early in the morning. Seas 2 to 3 feet.
.SUNDAY...West winds 5 to 10 knots, becoming northeast late in
the afternoon. Seas 1 to 2 feet.
.SUNDAY NIGHT...East winds 5 to 10 knots, becoming southeast
after midnight. Seas 2 to 3 feet.
.MONDAY...Northeast winds around 5 knots, becoming 5 to 10 knots
late in the afternoon. Seas 1 to 2 feet. A slight chance of
showers and thunderstorms late in the afternoon.
.MONDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet. A
slight chance of showers after midnight. A slight chance of
showers and thunderstorms early in the morning.

Winds and seas higher in and near thunderstorms.

$$

GMZ170-175-261545-
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-
932 PM CDT Wed Sep 25 2024

.REST OF TONIGHT...East winds 5 to 10 knots, becoming north, then
increasing to 10 to 15 knots early this morning. Seas 2 to
3 feet. Wave Detail: East 2 feet at 5 seconds. A chance of
showers with a slight chance of thunderstorms.
.THURSDAY...North winds 10 to 15 knots, increasing to 15 to
20 knots in the afternoon. Seas 3 to 5 feet, building to 6 to
8 feet, occasionally to 10 feet in the afternoon. Wave Detail:
Northeast 4 feet at 6 seconds, becoming north 6 feet at
7 seconds. A slight chance of thunderstorms. A chance of showers,
mainly in the morning.
.THURSDAY NIGHT...North winds 10 to 15 knots. Seas 6 to 8 feet,
occasionally to 10 feet. Wave Detail: Northeast 6 feet at
9 seconds and north 4 feet at 6 seconds.
.FRIDAY...North winds 5 to 10 knots. Seas 5 to 7 feet,
occasionally to 9 feet. Wave Detail: East 6 feet at 11 seconds.
.FRIDAY NIGHT...Northeast winds 5 to 10 knots, becoming south
early in the morning. Seas 3 to 5 feet. Wave Detail: East 5 feet
at 10 seconds.
.SATURDAY...West winds around 5 knots, becoming north late in the
afternoon. Seas 2 to 4 feet. Wave Detail: East 3 feet at
10 seconds.
.SATURDAY NIGHT...Northeast winds around 5 knots, becoming south
early in the morning. Seas 2 to 3 feet.
.SUNDAY...Northwest winds 5 to 10 knots, becoming northeast late
in the afternoon. Seas 2 to 3 feet.
.SUNDAY NIGHT...East winds 5 to 10 knots, becoming around 5 knots
after midnight. Seas 2 to 3 feet.
.MONDAY...Northeast winds 5 to 10 knots. Seas 2 to 3 feet. A
slight chance of showers. A slight chance of thunderstorms in the
afternoon.
.MONDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet. A
slight chance of showers. A slight chance of thunderstorms early
in the morning.

Winds and seas higher in and near thunderstorms.

$$