National Weather Service Marine Forecast FZUS54 KBRO

FZUS54 KBRO 050815
CWFBRO

Coastal Waters Forecast for the Lower Texas Coast
National Weather Service Brownsville TX
315 AM CDT Tue May 5 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.

GMZ100-052115
315 AM CDT Tue May 5 2026

SYNOPSIS
The pressure gradient will strengthen today resulting in moderate to strong southeast winds and elevated seas. Periods of exercise caution conditions are likely Wednesday and Thursday. A cold front stalls or moves through the waters on Thursday, bringing increased chances of rain Thursday into Friday.

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GMZ130-132-135-052115
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
315 AM CDT Tue May 5 2026

SMALL CRAFT ADVISORY IN EFFECT FROM NOON CDT TODAY THROUGH THIS EVENING

TODAY
South winds 10 to 15 knots, becoming southeast 15 to 25 knots with gusts up to 30 knots this afternoon. A moderate chop on the bay, increasing to choppy this afternoon.

TONIGHT
Southeast winds 15 to 20 knots. Choppy on the bay.

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

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.

THURSDAY
Southeast winds 5 to 10 knots, becoming east 10 to 15 knots in the afternoon. A moderate chop on the bay. A slight chance of showers and thunderstorms.

THURSDAY NIGHT
Northeast winds 10 to 15 knots. A moderate chop on the bay. A chance of thunderstorms. A chance of showers.

FRIDAY
Northeast winds around 10 knots. Light chop on the bay. A chance of thunderstorms in the morning. A chance of showers. A slight chance of thunderstorms in the afternoon.

FRIDAY NIGHT
East winds 5 to 10 knots, diminishing to around 5 knots early in the morning. Light chop on the bay, diminishing to smooth early in the morning. A slight chance of showers and thunderstorms early in the evening.

SATURDAY
East winds around 5 knots, increasing to 5 to 10 knots in the afternoon. Light chop on the bay.

SATURDAY NIGHT
Southeast winds 5 to 10 knots. Light chop on the bay.

Winds and waves higher in and near thunderstorms.

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GMZ150-155-052115
Gulf waters from Port Mansfield to the Rio Grande out 20 nm
Gulf waters from Baffin Bay to Port Mansfield out 20 nm
315 AM CDT Tue May 5 2026

SMALL CRAFT ADVISORY IN EFFECT FROM NOON CDT TODAY THROUGH THIS EVENING

TODAY
South winds 15 to 25 knots. Gusts to 30 knots late this afternoon. Seas 3 to 5 feet. Wave Detail: Southeast 4 feet at 6 seconds.

TONIGHT
Southeast winds 15 to 20 knots. Seas 4 to 5 feet. Wave Detail: Southeast 4 feet at 6 seconds.

WEDNESDAY
Southeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: Southeast 4 feet at 6 seconds.

WEDNESDAY NIGHT
Southeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: Southeast 4 feet at 7 seconds.

THURSDAY
Southeast winds around 10 knots, becoming east in the afternoon. Seas 3 to 4 feet. Wave Detail: Southeast 4 feet at 7 seconds. A slight chance of showers and thunderstorms.

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

FRIDAY
Northeast winds around 10 knots. Seas 3 to 4 feet. A chance of thunderstorms in the morning. A chance of showers. A slight chance of thunderstorms in the afternoon.

FRIDAY NIGHT
East winds 5 to 10 knots. Seas 2 to 4 feet. A slight chance of showers and thunderstorms early in the evening.

SATURDAY
East winds 5 to 10 knots. Seas 2 to 3 feet.

SATURDAY NIGHT
Southeast winds around 10 knots. Seas 2 to 3 feet.

Winds and seas higher in and near thunderstorms.

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GMZ170-175-052115
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
315 AM CDT Tue May 5 2026

TODAY
South winds 15 to 20 knots. Seas 4 to 5 feet. Wave Detail: South 4 feet at 6 seconds.

TONIGHT
Southeast winds 15 to 20 knots. Seas 4 to 5 feet. Wave Detail: Southeast 5 feet at 6 seconds.

WEDNESDAY
Southeast winds 10 to 15 knots. Seas 4 to 5 feet. Wave Detail: Southeast 4 feet at 6 seconds.

WEDNESDAY NIGHT
Southeast winds 10 to 15 knots. Seas 4 to 5 feet. Wave Detail: Southeast 4 feet at 7 seconds.

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

THURSDAY NIGHT
Northeast winds 10 to 15 knots. Seas 4 to 5 feet. Wave Detail: East 4 feet at 7 seconds. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight.

FRIDAY
Northeast winds 10 to 15 knots. Seas 4 to 5 feet. A slight chance of thunderstorms. A chance of showers until late afternoon, then a slight chance of showers late in the afternoon.

FRIDAY NIGHT
East winds 5 to 10 knots. Seas 3 to 4 feet. A slight chance of showers and thunderstorms early in the evening, then a slight chance of showers late in the evening.

SATURDAY
East winds 5 to 10 knots. Seas 2 to 3 feet.

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

Winds and seas higher in and near thunderstorms.