National Weather Service Marine Forecast FZUS54 KBRO

FZUS54 KBRO 161841
CWFBRO

Coastal Waters Forecast for the Lower Texas Coast
National Weather Service Brownsville TX
141 PM CDT Tue Jun 16 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.

GMZ100-170715
141 PM CDT Tue Jun 16 2026

SYNOPSIS
Generally moderate to breezy winds and moderate to rough seas will occur during the forecast as a weak tropical system possibly develops along the Texas coastline. Small Craft Should Exercise Caution to Small Craft Advisory will likely be needed due to winds and seas.

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GMZ130-132-135-170715
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
141 PM CDT Tue Jun 16 2026

REST OF TODAY
Southwest winds 5 to 10 knots, increasing to 10 to 15 knots late this afternoon. Light chop on the bay, increasing to a moderate chop late this afternoon. Showers likely with a chance of thunderstorms.

TONIGHT
West winds 10 to 15 knots, increasing to 15 to 20 knots in the late evening and early morning, then diminishing to 10 to 15 knots early in the morning. A moderate chop on the bay, increasing to choppy in the late evening and early morning, then diminishing to a moderate chop early in the morning. A chance of showers and thunderstorms in the evening, then a chance of showers with a slight chance of thunderstorms after midnight.

WEDNESDAY
Southwest winds 5 to 10 knots, becoming south 10 to 15 knots late in the afternoon. Light chop on the bay, increasing to a moderate chop late in the afternoon.

WEDNESDAY NIGHT
South winds 10 to 15 knots, increasing to 15 to 20 knots after midnight. Choppy on the bay.

THURSDAY
South winds 15 to 20 knots. Choppy on the bay.

THURSDAY NIGHT
Southeast winds 15 to 20 knots, becoming south 10 to 15 knots early in the morning. Choppy on the bay, diminishing to a moderate chop early in the morning.

FRIDAY
Southeast winds around 15 knots. A moderate chop on the bay.

FRIDAY NIGHT
Southeast winds 10 to 15 knots. A moderate chop on the bay.

SATURDAY
Southeast winds 10 to 15 knots. A moderate chop on the bay.

SATURDAY NIGHT
Southeast winds 10 to 15 knots, becoming south early in the morning. A moderate chop on the bay. A slight chance of showers until early morning.

Winds and waves higher in and near thunderstorms.

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GMZ150-155-170715
Gulf waters from Port Mansfield to the Rio Grande out 20 nm
Gulf waters from Baffin Bay to Port Mansfield out 20 nm
141 PM CDT Tue Jun 16 2026

REST OF TODAY
Southwest winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: Southeast 4 feet at 6 seconds. A chance of thunderstorms. Showers likely early this afternoon, then a chance of showers late this afternoon.

TONIGHT
West winds 10 to 15 knots, increasing to 15 to 20 knots with gusts up to 30 knots after midnight. Seas 3 to 4 feet. Wave Detail: Southeast 3 feet at 7 seconds. A chance of thunderstorms. Showers likely early in the evening, then a chance of showers in the late evening and overnight.

WEDNESDAY
West winds 15 to 20 knots, becoming southwest 10 to 15 knots late in the morning, then diminishing to 5 to 10 knots early in the afternoon, becoming south 10 to 15 knots late in the afternoon. Seas 3 to 4 feet. Wave Detail: Southeast 4 feet at 7 seconds. A slight chance of showers and thunderstorms early in the morning.

WEDNESDAY NIGHT
South winds 15 to 20 knots. Seas 3 to 5 feet. Wave Detail: Southeast 5 feet at 7 seconds.

THURSDAY
South winds 15 to 20 knots. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: Southeast 6 feet at 8 seconds.

THURSDAY NIGHT
South winds 15 to 20 knots. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: Southeast 6 feet at 8 seconds.

FRIDAY
Southeast winds 10 to 15 knots. Seas 5 to 7 feet, occasionally to 9 feet.

FRIDAY NIGHT
Southeast winds around 15 knots. Seas 4 to 5 feet. A slight chance of showers and thunderstorms early in the morning.

SATURDAY
Southeast winds 10 to 15 knots. Seas 4 to 5 feet.

SATURDAY NIGHT
Southeast winds 15 to 20 knots, becoming south early in the morning. Seas 4 to 5 feet. A slight chance of showers until early morning.

Winds and seas higher in and near thunderstorms.

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GMZ170-175-170715
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
141 PM CDT Tue Jun 16 2026

REST OF TODAY
South winds 10 to 15 knots. Seas 4 to 5 feet. Wave Detail: Southeast 5 feet at 6 seconds. A chance of thunderstorms. Showers.

TONIGHT
Southwest winds 10 to 15 knots, becoming west 15 to 20 knots with gusts up to 30 knots after midnight. Seas 3 to 5 feet. Wave Detail: Southeast 4 feet at 6 seconds. A chance of thunderstorms. Showers.

WEDNESDAY
Southwest winds 15 to 20 knots, diminishing to 10 to 15 knots in the afternoon, then becoming south late in the afternoon. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: Southeast 5 feet at 7 seconds and southwest 3 feet at 4 seconds. A chance of showers and thunderstorms early in the morning, then a slight chance of showers and thunderstorms late in the morning.

WEDNESDAY NIGHT
South winds 15 to 20 knots. Seas 4 to 5 feet, building to 5 to 7 feet, occasionally to 9 feet after midnight. Wave Detail: Southeast 5 feet at 7 seconds, becoming southeast 6 feet at 7 seconds.

THURSDAY
South winds 15 to 20 knots. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: Southeast 6 feet at 8 seconds.

THURSDAY NIGHT
South winds 15 to 20 knots. Seas 6 to 9 feet, occasionally to 11 feet. Wave Detail: Southeast 7 feet at 8 seconds.

FRIDAY
Southeast winds 10 to 15 knots. Seas 6 to 9 feet, occasionally to 11 feet.

FRIDAY NIGHT
Southeast winds 10 to 15 knots. Seas 5 to 7 feet, occasionally to 9 feet. A slight chance of showers and thunderstorms early in the morning.

SATURDAY
Southeast winds around 15 knots, becoming 10 to 15 knots in the afternoon. Seas 5 to 7 feet, occasionally to 9 feet, subsiding to 4 to 5 feet in the afternoon.

SATURDAY NIGHT
Southeast winds 10 to 15 knots, increasing to 15 to 20 knots in the late evening and overnight. Seas 4 to 5 feet.

Winds and seas higher in and near thunderstorms.