Coastal Waters Forecast
Issued by NWS Brownsville, TX

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FZUS54 KBRO 172105
CWFBRO

Coastal Waters Forecast for the Lower Texas Coast
National Weather Service Brownsville TX
405 PM CDT Sat May 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.

GMZ100-180330-
405 PM CDT Sat May 17 2025

.SYNOPSIS...An enhanced pressure gradient will produce slightly
adverse marine conditions along the Lower Texas Coast late in the
weekend through early in the new work week. Small Craft Should
Exercise Caution is likely to be needed, and Small Craft Advisory
cannot be entirely ruled out. Improved winds and seas will occur
as the week progresses as the pressure gradient weakens a bit.

$$

GMZ130-132-135-180330-
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-
405 PM CDT Sat May 17 2025

.TONIGHT...Southeast winds 10 to 15 knots. A moderate chop on the
bay. Hazy.
.SUNDAY...Southeast winds 10 to 15 knots, increasing to 15 to 20
knots in the afternoon. A moderate chop on the bay, increasing to
choppy bay waters in the afternoon. Hazy early in the morning.
.SUNDAY NIGHT...Southeast winds 15 to 20 knots. Choppy bay waters.
.MONDAY...Southeast winds 15 to 20 knots. Choppy bay waters.
.MONDAY NIGHT...Southeast winds 15 to 20 knots. Choppy bay waters.
.TUESDAY...Southeast winds 10 to 15 knots. A moderate chop on the
bay.
.TUESDAY NIGHT...Southeast winds 10 to 15 knots, diminishing to
5 to 10 knots after midnight. A light chop on the bay.
.WEDNESDAY...East winds 5 to 10 knots, increasing to 10 to 15
knots in the afternoon. A moderate chop on the bay.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. A light chop on the
bay.
.THURSDAY...East winds 5 to 10 knots, increasing to 10 to 15
knots in the afternoon. A moderate chop on the bay.
.THURSDAY NIGHT...East winds 10 to 15 knots, becoming southeast
5 to 10 knots early in the morning. A moderate chop on the bay,
diminishing to a light chop on the bay early in the morning.

$$

GMZ150-155-180330-
Gulf waters from Port Mansfield to the Rio Grande out 20 nm-
Gulf waters from Baffin Bay to Port Mansfield out 20 nm-
405 PM CDT Sat May 17 2025

.TONIGHT...Southeast winds around 15 knots. Seas 4 to 5 feet.
Wave Detail: Southeast 4 feet at 7 seconds. Hazy.
.SUNDAY...Southeast winds 15 to 20 knots. Seas 4 to 5 feet. Wave
Detail: Southeast 4 feet at 7 seconds. Hazy early in the morning.
.SUNDAY NIGHT...Southeast winds 15 to 20 knots. Seas 4 to 5 feet.
Wave Detail: Southeast 5 feet at 6 seconds.
.MONDAY...Southeast winds 15 to 20 knots. Seas 4 to 6 feet,
occasionally to 8 feet. Wave Detail: Southeast 5 feet at
7 seconds.
.MONDAY NIGHT...Southeast winds 15 to 20 knots. Seas 4 to 5 feet.
Wave Detail: Southeast 5 feet at 7 seconds.
.TUESDAY...South winds 15 to 20 knots, becoming southeast 10 to
15 knots in the afternoon. Seas 4 to 5 feet. Wave Detail:
Southeast 5 feet at 7 seconds.
.TUESDAY NIGHT...Southeast winds 10 to 15 knots, diminishing to
5 to 10 knots early in the morning. Seas 3 to 4 feet.
.WEDNESDAY...East winds 5 to 10 knots. Seas 3 to 4 feet.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas 3 to 4 feet.
.THURSDAY...East winds around 10 knots. Seas 3 to 4 feet.
.THURSDAY NIGHT...Southeast winds around 10 knots. Seas 3 to
4 feet.

$$

GMZ170-175-180330-
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-
405 PM CDT Sat May 17 2025

.TONIGHT...Southeast winds 10 to 15 knots. Seas 4 to 5 feet. Wave
Detail: Southeast 5 feet at 7 seconds. Hazy after midnight.
.SUNDAY...Southeast winds around 15 knots. Seas 4 to 6 feet,
occasionally to 8 feet. Wave Detail: Southeast 5 feet at
7 seconds. Hazy early in the morning.
.SUNDAY NIGHT...Southeast winds 15 to 20 knots. Seas 4 to 5 feet.
Wave Detail: Southeast 5 feet at 7 seconds.
.MONDAY...Southeast winds 15 to 20 knots. Seas 5 to 7 feet,
occasionally to 9 feet. Wave Detail: Southeast 6 feet at
7 seconds.
.MONDAY NIGHT...Southeast winds 15 to 20 knots. Seas 4 to 6 feet,
occasionally to 8 feet. Wave Detail: Southeast 5 feet at
7 seconds.
.TUESDAY...Southeast winds 15 to 20 knots, diminishing to 10 to
15 knots in the afternoon. Seas 4 to 6 feet, occasionally to
8 feet. Wave Detail: Southeast 5 feet at 7 seconds.
.TUESDAY NIGHT...Southeast winds around 10 knots. Seas 3 to
5 feet.
.WEDNESDAY...East winds around 10 knots. Seas 3 to 4 feet.
.WEDNESDAY NIGHT...East winds around 10 knots. Seas 3 to 4 feet.
.THURSDAY...East winds 10 to 15 knots. Seas 3 to 4 feet.
.THURSDAY NIGHT...East winds around 10 knots. Seas 3 to 4 feet.

$$