National Weather Service Marine Forecast FZUS54 KBRO

FZUS54 KBRO 251846
CWFBRO

Coastal Waters Forecast for the Lower Texas Coast
National Weather Service Brownsville TX
146 PM CDT Mon May 25 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.

GMZ100-260715
146 PM CDT Mon May 25 2026

SYNOPSIS
Generally favorable winds and seas are expected through the forecast period. There could be periods of Small Craft Exercise Caution (SCEC) conditions Tuesday night through Thursday night. There is a medium-high (50-70%) chance for showers and thunderstorms late Tuesday through Wednesday. There may be additional rain chances early next week.

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GMZ130-132-135-260715
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
146 PM CDT Mon May 25 2026

TONIGHT
East winds 5 to 10 knots, becoming southeast 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 around 15 knots. A moderate chop on the bay. A chance of showers with a slight chance of thunderstorms after midnight.

WEDNESDAY
Southeast winds 10 to 15 knots. A moderate chop on the bay. Showers likely. A slight chance of thunderstorms early in the morning, then a chance of thunderstorms in the afternoon.

WEDNESDAY NIGHT
Southeast winds 10 to 15 knots, diminishing to 5 to 10 knots early in the morning. A moderate chop on the bay, diminishing to light chop early in the morning. Showers likely with a chance of thunderstorms early in the evening, then a slight chance of showers and thunderstorms in the late evening and early morning.

THURSDAY
Southeast winds 5 to 10 knots, becoming east late in the afternoon. Light chop on the bay.

THURSDAY NIGHT
East winds 5 to 10 knots, becoming southeast after midnight. Light chop on the bay.

FRIDAY
Southeast winds around 5 knots, becoming east in the afternoon. Light chop on the bay.

FRIDAY NIGHT
Southeast winds around 10 knots, becoming 5 to 10 knots after midnight. Light chop on the bay.

SATURDAY
South winds 5 to 10 knots, becoming southeast early in the afternoon, then increasing to 10 to 15 knots late in the afternoon. Light chop on the bay, increasing to a moderate chop late in the afternoon.

SATURDAY NIGHT
Southeast winds 10 to 15 knots, diminishing to 5 to 10 knots after midnight. Light chop on the bay. A slight chance of showers early in the morning.

Winds and waves higher in and near thunderstorms.

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GMZ150-155-260715
Gulf waters from Port Mansfield to the Rio Grande out 20 nm
Gulf waters from Baffin Bay to Port Mansfield out 20 nm
146 PM CDT Mon May 25 2026

TONIGHT
East winds around 10 knots, becoming southeast after midnight. Seas 2 to 3 feet. Wave Detail: East 2 feet at 6 seconds.

TUESDAY
Southeast winds 5 to 10 knots, increasing to 10 to 15 knots late in the afternoon. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 6 seconds.

TUESDAY NIGHT
Southeast winds 10 to 15 knots, increasing to 15 to 20 knots after midnight. Seas 2 to 4 feet. Wave Detail: Southeast 4 feet at 6 seconds. A chance of showers with a slight chance of thunderstorms after midnight.

WEDNESDAY
Southeast winds around 15 knots. Seas 3 to 5 feet. Wave Detail: Southeast 4 feet at 6 seconds. Showers likely. A slight chance of thunderstorms early in the morning, then a chance of thunderstorms in the afternoon.

WEDNESDAY NIGHT
Southeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: Southeast 4 feet at 7 seconds. A chance of thunderstorms in the evening. A chance of showers. A slight chance of thunderstorms after midnight.

THURSDAY
Southeast winds 5 to 10 knots, becoming east 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.

THURSDAY NIGHT
Southeast winds 5 to 10 knots, becoming around 5 knots early in the morning. Seas 3 to 4 feet.

FRIDAY
Southeast winds around 5 knots, becoming east late in the afternoon. Seas 3 to 4 feet.

FRIDAY NIGHT
Southeast winds around 10 knots. Seas 3 to 4 feet.

SATURDAY
Southeast winds 5 to 10 knots. Seas 3 to 4 feet.

SATURDAY NIGHT
Southeast winds around 10 knots. Seas 2 to 3 feet. A slight chance of showers after midnight.

Winds and seas higher in and near thunderstorms.

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GMZ170-175-260715
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
146 PM CDT Mon May 25 2026

TONIGHT
East winds 5 to 10 knots, becoming southeast after midnight. Seas 2 to 3 feet. Wave Detail: East 2 feet at 6 seconds.

TUESDAY
Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 6 seconds.

TUESDAY NIGHT
Southeast winds 10 to 15 knots. Seas 2 to 4 feet. Wave Detail: Southeast 4 feet at 6 seconds. A chance of showers with a slight chance of thunderstorms after midnight.

WEDNESDAY
Southeast winds 10 to 15 knots. Seas 4 to 5 feet. Wave Detail: Southeast 4 feet at 6 seconds. A chance of showers with a slight chance of thunderstorms early in the morning, then showers likely with a chance of thunderstorms in the afternoon.

WEDNESDAY NIGHT
Southeast winds 10 to 15 knots. Seas 4 to 5 feet. Wave Detail: Southeast 4 feet at 7 seconds. A chance of showers and thunderstorms.

THURSDAY
Southeast winds 5 to 10 knots, becoming east late in the afternoon. Seas 4 to 5 feet. Wave Detail: Southeast 4 feet at 7 seconds. A chance of showers with a slight chance of thunderstorms early in the morning, then a slight chance of showers and thunderstorms in the afternoon.

THURSDAY NIGHT
Southeast winds 5 to 10 knots. Seas 3 to 4 feet.

FRIDAY
Southeast winds around 5 knots, becoming east late in the afternoon. Seas 3 to 4 feet. A slight chance of showers late in the morning.

FRIDAY NIGHT
Southeast winds 5 to 10 knots, becoming around 10 knots after midnight. Seas 3 to 4 feet.

SATURDAY
South winds 5 to 10 knots, becoming southeast late in the afternoon. Seas 3 to 4 feet.

SATURDAY NIGHT
Southeast winds 5 to 10 knots. Seas 3 to 4 feet.

Winds and seas higher in and near thunderstorms.