479
FZUS54 KBRO 050638
CWFBRO

Coastal Waters Forecast for the Lower Texas Coast
National Weather Service Brownsville TX
1238 AM CST Fri Dec 5 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.

GMZ100-051930-
1238 AM CST Fri Dec 5 2025

.SYNOPSIS...Adverse, but improving, marine conditions will occur
today due to the recent passage of a cold front. More favorable
winds and seas are then expected until late in the weekend, when
the passage of another cold front will bring the possibility of
Small Craft Advisory. Winds and seas will then rapidly improve
early in the new work week.

$$

GMZ130-132-135-051930-
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-
1238 AM CST Fri Dec 5 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL NOON CST TODAY...

.TODAY...North winds 10 to 15 knots, diminishing to 5 to 10 knots
late this afternoon. A moderate chop on the bay, diminishing to
a light chop on the bay late this afternoon.
.TONIGHT...North winds 5 to 10 knots, becoming northwest after
midnight. A light chop on the bay. A slight chance of showers in
the evening, then a chance of showers after midnight.
.SATURDAY...North winds 5 to 10 knots, becoming northeast late in
the afternoon. A light chop on the bay.
.SATURDAY NIGHT...East winds around 5 knots, becoming southwest
early in the morning. A light chop on the bay.
.SUNDAY...Northwest winds around 5 knots, becoming 5 to 10 knots
in the afternoon, then becoming north late in the afternoon.
A light chop on the bay.
.SUNDAY NIGHT...North winds 10 to 15 knots, increasing to 15 to
20 knots in the late evening and overnight. A moderate chop on
the bay, increasing to choppy bay waters in the late evening and
overnight.
.MONDAY...North winds 15 to 20 knots, diminishing to 10 to 15
knots in the afternoon. A moderate chop on the bay.
.MONDAY NIGHT...Northeast winds 5 to 10 knots. A light chop on
the bay.
.TUESDAY...Northeast winds 5 to 10 knots, becoming east in the
afternoon. A light chop on the bay.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots, becoming south
after midnight. A light chop on the bay.

$$

GMZ150-155-051930-
Gulf waters from Port Mansfield to the Rio Grande out 20 nm-
Gulf waters from Baffin Bay to Port Mansfield out 20 nm-
1238 AM CST Fri Dec 5 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL NOON CST TODAY...

.TODAY...North winds 10 to 15 knots. Seas 5 to 7 feet,
occasionally to 9 feet, subsiding to 3 to 4 feet this afternoon.
Wave Detail: North 6 feet at 5 seconds, becoming northeast 4 feet
at 6 seconds. A slight chance of showers.
.TONIGHT...Northeast winds 5 to 10 knots, becoming north after
midnight. Seas 2 to 3 feet. Wave Detail: Northeast 3 feet at
6 seconds. A slight chance of showers in the evening, then a
chance of showers after midnight.
.SATURDAY...North winds 5 to 10 knots, becoming northeast in the
afternoon. Seas 2 to 4 feet. Wave Detail: North 2 feet at
3 seconds and northeast 2 feet at 6 seconds. A slight chance of
showers in the morning.
.SATURDAY NIGHT...East winds around 5 knots, becoming southwest
early in the morning. Seas 2 to 3 feet. Wave Detail: East 2 feet
at 5 seconds.
.SUNDAY...West winds around 5 knots, becoming northwest in the
afternoon, then becoming north late in the afternoon. Seas 2 to
3 feet. Wave Detail: East 2 feet at 5 seconds and northwest
1 foot at 2 seconds.
.SUNDAY NIGHT...North winds 10 to 15 knots, increasing to 15 to
20 knots in the late evening and overnight. Seas 3 to 5 feet,
building to 6 to 9 feet, occasionally to 11 feet after midnight.
Wave Detail: Northeast 5 feet at 5 seconds, becoming northeast
8 feet at 7 seconds.
.MONDAY...North winds 15 to 20 knots, becoming northeast 10 to
15 knots in the afternoon. Seas 6 to 9 feet, occasionally to
11 feet, subsiding to 5 to 7 feet, occasionally to 9 feet in the
afternoon.
.MONDAY NIGHT...Northeast winds 5 to 10 knots. Seas 3 to 4 feet.
.TUESDAY...East winds 5 to 10 knots. Seas 2 to 3 feet.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots, becoming south in
the late evening and overnight. Seas 2 to 3 feet.

$$

GMZ170-175-051930-
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-
1238 AM CST Fri Dec 5 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL NOON CST TODAY...

.TODAY...North winds 15 to 20 knots, diminishing to 10 to
15 knots this afternoon. Seas 5 to 7 feet, occasionally to
9 feet, subsiding to 3 to 5 feet this afternoon. Wave Detail:
North 5 feet at 6 seconds, becoming north 3 feet at 6 seconds. A
chance of showers.
.TONIGHT...Northeast winds 5 to 10 knots, becoming north early in
the morning. Seas 3 to 4 feet. Wave Detail: Northeast 3 feet at
6 seconds. A chance of showers.
.SATURDAY...North winds 5 to 10 knots. Seas 2 to 4 feet. Wave
Detail: Northeast 2 feet at 6 seconds and northwest 1 foot at
3 seconds. A chance of showers.
.SATURDAY NIGHT...East winds 5 to 10 knots, becoming southwest
early in the morning. Seas 2 to 3 feet. Wave Detail: East 2 feet
at 5 seconds and northwest 1 foot at 4 seconds.
.SUNDAY...West winds 5 to 10 knots, becoming northwest in the
afternoon, then becoming north 10 to 15 knots late in the
afternoon. Seas 2 to 3 feet. Wave Detail: Northwest 2 feet at
3 seconds and east 2 feet at 5 seconds. A slight chance of
thunderstorms in the morning. A slight chance of showers.
.SUNDAY NIGHT...North winds 10 to 15 knots, increasing to 20 to
25 knots. Seas 4 to 6 feet, occasionally to 8 feet, building to
6 to 9 feet, occasionally to 11 feet after midnight. Wave Detail:
North 4 feet at 5 seconds, becoming north 8 feet at 6 seconds.
.MONDAY...North winds 15 to 20 knots, becoming northeast 10 to
15 knots late in the afternoon. Seas 6 to 9 feet, occasionally to
11 feet, subsiding to 5 to 7 feet, occasionally to 9 feet in the
afternoon.
.MONDAY NIGHT...Northeast winds 10 to 15 knots. Seas 3 to 5 feet.
.TUESDAY...East winds 5 to 10 knots. Seas 2 to 4 feet.
.TUESDAY NIGHT...Southeast winds around 10 knots, becoming south
early in the morning. Seas 2 to 3 feet.

Winds and seas higher in and near thunderstorms.

$$