461
FZUS54 KBRO 252042
CWFBRO

Coastal Waters Forecast for the Lower Texas Coast
National Weather Service Brownsville TX
342 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.

GMZ100-260930-
342 PM CDT Wed Sep 25 2024

.SYNOPSIS...High pressure across the eastern Gulf will support
light to moderate southeasterly winds and slight seas today.
 Hurricane Helene is currently moving north-northwestward in the
Gulf of Mexico and is expected later today, or tonight, to take
on a north-northeastward track through the eastern Gulf of Mexico
and make landfall as a major hurricane on the coast of the Florida
Big Bend tomorrow evening. Resulting swell will begin to arrive
to the lower Texas coast tomorrow morning. Meanwhile, a weak cold
front is expected to pass through the Lower Texas Coast tonight
into tomorrow morning, followed by a brief period of moderate to
fresh northerly winds later tonight through tomorrow evening. The
combined effects of the wind and swell will result in enhanced
wave heights beginning tomorrow morning and continuing through
Friday. Small Craft Should Exercise Caution headlines for seas may
be needed Thursday through Friday night. Favorable conditions
look to return Saturday.

$$

GMZ130-132-135-260930-
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-
342 PM CDT Wed Sep 25 2024

.TONIGHT...East winds 5 to 10 knots, becoming northwest after
midnight. Light chop on the bay, diminishing to smooth late this
evening, then increasing to light chop after midnight. A chance
of showers and thunderstorms late this evening. A slight chance
of showers and thunderstorms after midnight.
.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.

$$

GMZ150-155-260930-
Gulf waters from Port Mansfield to the Rio Grande out 20 nm-
Gulf waters from Baffin Bay to Port Mansfield out 20 nm-
342 PM CDT Wed Sep 25 2024

.TONIGHT...East winds 5 to 10 knots, becoming north after
midnight, 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 after midnight, 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, becoming northeast
5 feet at 7 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 3 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.

$$

GMZ170-175-260930-
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-
342 PM CDT Wed Sep 25 2024

.TONIGHT...East winds 5 to 10 knots, becoming north after
midnight, then increasing to 10 to 15 knots early this morning.
Seas 2 to 3 feet. Wave Detail: Northeast 2 feet at 5 seconds. A
chance of showers with a slight chance of thunderstorms after
midnight.
.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:
North 5 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: North 7 feet at 9 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 and northwest 1 foot at 3 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.

$$