National Weather Service Marine Forecast FZUS54 KBRO

FZUS54 KBRO 060734
CWFBRO

Coastal Waters Forecast for the Lower Texas Coast
National Weather Service Brownsville TX
234 AM CDT Sun Sep 6 2026

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.

GMZ100-062015
234 AM CDT Sun Sep 6 2026

SYNOPSIS
Light to moderate southeasterly winds and low to moderate seas will prevail along the Lower Texas Coast through late week. Low to medium chances of rain are expected to develop Tuesday into Thursday.

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GMZ130-132-135-062015
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
234 AM CDT Sun Sep 6 2026

TODAY
Southeast winds 5 to 10 knots, increasing to 10 to 15 knots this afternoon. A moderate chop on the bay.

TONIGHT
Southeast winds 10 to 15 knots, becoming south 5 to 10 knots after midnight. Light chop on the bay.

MONDAY
Southeast winds 5 to 10 knots, increasing to 10 to 15 knots late in the afternoon. Light chop on the bay, increasing to a moderate chop late in the afternoon.

MONDAY NIGHT
Southeast winds 10 to 15 knots, becoming south 5 to 10 knots after midnight. Light chop on the bay.

TUESDAY
Southeast winds 5 to 10 knots, increasing to 10 to 15 knots in the afternoon. A moderate chop on the bay.

TUESDAY NIGHT
Southeast winds 10 to 15 knots, diminishing to 5 to 10 knots after midnight. Light chop on the bay.

WEDNESDAY
Southeast winds around 5 knots, becoming 5 to 10 knots in the afternoon. Light chop on the bay. A slight chance of showers and thunderstorms.

WEDNESDAY NIGHT
Southeast winds 5 to 10 knots, becoming south after midnight. Light chop on the bay. A slight chance of showers and thunderstorms early in the evening.

THURSDAY
South winds around 5 knots, becoming southeast in the afternoon. Smooth on the bay, increasing to light chop in the afternoon.

THURSDAY NIGHT
Southeast winds 10 to 15 knots, becoming south 5 to 10 knots after midnight. A moderate chop on the bay, diminishing to light chop early in the morning.

Winds and waves higher in and near thunderstorms.

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GMZ150-155-062015
Gulf waters from Port Mansfield to the Rio Grande out 20 nm
Gulf waters from Baffin Bay to Port Mansfield out 20 nm
234 AM CDT Sun Sep 6 2026

TODAY
South winds 5 to 10 knots, becoming southeast this afternoon. Seas 1 to 2 feet. Wave Detail: Southeast 2 feet at 5 seconds.

TONIGHT
Southeast winds around 10 knots, becoming south after midnight. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 5 seconds.

MONDAY
South winds 5 to 10 knots, becoming southeast in the afternoon. Seas 1 to 2 feet. Wave Detail: Southeast 2 feet at 5 seconds.

MONDAY NIGHT
Southeast winds around 10 knots, becoming south early in the morning. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 5 seconds.

TUESDAY
Southeast winds 5 to 10 knots. Seas 1 to 2 feet. Wave Detail: Southeast 2 feet at 5 seconds.

TUESDAY NIGHT
Southeast winds 5 to 10 knots, becoming south early in the morning. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 5 seconds.

WEDNESDAY
Southeast winds around 5 knots, becoming 5 to 10 knots in the afternoon. Seas 2 to 3 feet. A slight chance of showers and thunderstorms.

WEDNESDAY NIGHT
Southeast winds around 10 knots, becoming south after midnight. Seas 2 to 3 feet.

THURSDAY
South winds around 5 knots, becoming southeast in the afternoon. Seas 2 to 3 feet.

THURSDAY 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.

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GMZ170-175-062015
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
234 AM CDT Sun Sep 6 2026

TODAY
South winds 5 to 10 knots, becoming southeast this afternoon. Seas 2 to 3 feet. Wave Detail: South 2 feet at 5 seconds.

TONIGHT
Southeast winds around 10 knots, becoming south after midnight. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 5 seconds.

MONDAY
South winds 5 to 10 knots, becoming southeast in the afternoon. Seas 1 to 2 feet. Wave Detail: Southeast 2 feet at 5 seconds.

MONDAY NIGHT
Southeast winds around 10 knots, becoming south early in the morning. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 5 seconds.

TUESDAY
Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 5 seconds. A slight chance of showers. A slight chance of thunderstorms in the afternoon.

TUESDAY NIGHT
Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 5 seconds. A slight chance of showers early in the evening. A chance of showers and thunderstorms after midnight.

WEDNESDAY
Southeast winds 5 to 10 knots, becoming around 5 knots late in the afternoon. Seas 2 to 3 feet. A chance of showers and thunderstorms.

WEDNESDAY NIGHT
Southeast winds 5 to 10 knots, becoming south after midnight. Seas 2 to 3 feet. A chance of showers and thunderstorms early in the evening. A slight chance of showers and thunderstorms after midnight.

THURSDAY
South winds around 5 knots, becoming southeast around 5 knots late in the afternoon. Seas 2 to 3 feet. A slight chance of showers and thunderstorms.

THURSDAY NIGHT
Southeast winds 5 to 10 knots, becoming south 10 to 15 knots after midnight. Seas 2 to 3 feet.

Winds and seas higher in and near thunderstorms.