Coastal Waters Forecast
Issued by NWS Brownsville, TX

Home |  Current Version |  Previous Version |  Text Only |  Print | Product List |  Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
826
FZUS54 KBRO 170547
CWFBRO

Coastal Waters Forecast for the Lower Texas Coast
National Weather Service Brownsville TX
1247 AM CDT Fri Oct 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.

GMZ100-171830-
1247 AM CDT Fri Oct 17 2025

.SYNOPSIS...Generally favorable marine conditions are expected to
persist through the forecast. High pressure over the Northern Gulf
looks to support generally light to moderate easterly to
southeasterly winds and slight to moderate seas along the Lower
Texas Coast through next Friday.


$$

GMZ130-132-135-171830-
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-
1247 AM CDT Fri Oct 17 2025

.TODAY...South winds around 5 knots, becoming east this
afternoon. Smooth on the bay, increasing to light chop this
afternoon.
.TONIGHT...Southeast winds 5 to 10 knots, becoming south after
midnight. Light chop on the bay.
.SATURDAY...South winds 5 to 10 knots, becoming southeast in the
afternoon. Light chop on the bay.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots, becoming south
after midnight. Light chop on the bay.
.SUNDAY...West winds around 5 knots, becoming northeast 10 to
15 knots in the afternoon. Smooth on the bay, increasing to a
moderate chop in the afternoon.
.SUNDAY NIGHT...East winds 10 to 15 knots, diminishing to 5 to
10 knots after midnight. A moderate chop on the bay, diminishing
to light chop after midnight.
.MONDAY...Southeast winds 5 to 10 knots. Light chop on the bay.
.MONDAY NIGHT...Southeast winds 5 to 10 knots. Light chop on the
bay.
.TUESDAY...Southeast winds 5 to 10 knots, increasing to 10 to
15 knots in the afternoon. Light chop on the bay, increasing to a
moderate chop in the afternoon.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Light chop on the
bay.

$$

GMZ150-155-171830-
Gulf waters from Port Mansfield to the Rio Grande out 20 nm-
Gulf waters from Baffin Bay to Port Mansfield out 20 nm-
1247 AM CDT Fri Oct 17 2025

.TODAY...South winds around 5 knots, becoming east this
afternoon. Seas 2 to 3 feet. Wave Detail: East 3 feet at
6 seconds.
.TONIGHT...Southeast winds 5 to 10 knots, becoming south after
midnight. Seas 3 to 4 feet. Wave Detail: East 3 feet at
7 seconds.
.SATURDAY...South winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 3 feet at 6 seconds.
.SATURDAY NIGHT...South winds 5 to 10 knots. Seas 2 to 3 feet.
Wave Detail: Southeast 2 feet at 5 seconds.
.SUNDAY...West winds 5 to 10 knots, becoming northeast in the
afternoon. Seas 2 to 3 feet. Wave Detail: East 2 feet at
4 seconds.
.SUNDAY NIGHT...East winds around 10 knots. Seas 2 to 3 feet.
Wave Detail: East 3 feet at 7 seconds and northeast 2 feet at
3 seconds.
.MONDAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet.
.MONDAY NIGHT...Southeast winds 5 to 10 knots, becoming south
10 to 15 knots after midnight. Seas 2 to 4 feet.
.TUESDAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet.
.TUESDAY NIGHT...Southeast winds around 10 knots. Seas 2 to
3 feet.

$$

GMZ170-175-171830-
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-
1247 AM CDT Fri Oct 17 2025

.TODAY...Southeast winds 5 to 10 knots, becoming east this
afternoon. Seas 2 to 3 feet. Wave Detail: East 3 feet at
5 seconds. A slight chance of thunderstorms.
.TONIGHT...Southeast winds 5 to 10 knots, becoming south after
midnight. Seas 3 to 4 feet. Wave Detail: East 3 feet at
7 seconds. A slight chance of showers late in the evening.
.SATURDAY...South winds 5 to 10 knots. Seas 2 to 4 feet. Wave
Detail: East 3 feet at 6 seconds.
.SATURDAY NIGHT...South winds 5 to 10 knots. Seas 2 to 3 feet.
Wave Detail: Southeast 2 feet at 5 seconds.
.SUNDAY...West winds 5 to 10 knots, becoming northeast in the
afternoon. Seas 2 to 3 feet. Wave Detail: East 2 feet at
4 seconds. A slight chance of showers. A slight chance of
thunderstorms in the afternoon.
.SUNDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 4 feet. Wave
Detail: East 3 feet at 7 seconds and south 1 foot at 4 seconds. A
slight chance of showers and thunderstorms early in the evening.
.MONDAY...Southeast winds 5 to 10 knots. Seas 3 to 4 feet.
.MONDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to 4 feet.
.TUESDAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet.
.TUESDAY NIGHT...Southeast winds around 10 knots. Seas 2 to
4 feet.

Winds and seas higher in and near thunderstorms.

$$