National Weather Service Marine Forecast FZUS54 KBRO

FZUS54 KBRO 041806
CWFBRO

Coastal Waters Forecast for the Lower Texas Coast
National Weather Service Brownsville TX
1206 PM CST Wed Mar 4 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.

GMZ100-050715
1206 PM CST Wed Mar 4 2026

SYNOPSIS
An enhanced pressure gradient will result in moderate winds and low to moderate seas across the Gulf waters and Laguna Madre through the end of the week. Small Craft Exercise Caution conditions will be realized each day by mid to late morning with wind gusts around or just below 20 knots. Brief Small Craft Advisory conditions cannot be ruled out across the Laguna Madre and nearshore Gulf waters each afternoon through Friday. Conditions should improve slightly heading into the weekend, but seas will remain elevate at around 3-5 feet. Low to medium rain chances return this weekend and into early next week.

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GMZ130-132-135-050715
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
1206 PM CST Wed Mar 4 2026

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

THURSDAY
Southeast winds 10 to 15 knots, increasing to 15 to 20 knots in the afternoon. A moderate chop on the bay, increasing to choppy in the afternoon.

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

FRIDAY
Southeast winds 15 to 20 knots. Choppy on the bay. A slight chance of showers.

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

SATURDAY
Southeast winds 10 to 15 knots, increasing to 15 to 20 knots in the afternoon. Choppy on the bay. A slight chance of showers.

SATURDAY NIGHT
Southeast winds 10 to 15 knots. A moderate chop on the bay. A slight chance of showers in the evening, then a chance of showers with a slight chance of thunderstorms after midnight.

SUNDAY
Southeast winds 10 to 15 knots. A moderate chop on the bay. A chance of showers. A slight chance of thunderstorms in the afternoon.

SUNDAY NIGHT
Southeast winds around 10 knots. Light chop on the bay. A slight chance of thunderstorms in the evening. A slight chance of showers.

MONDAY
Southeast winds 10 to 15 knots, increasing to 15 to 20 knots in the afternoon. Choppy on the bay.

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

Winds and waves higher in and near thunderstorms.

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GMZ150-155-050715
Gulf waters from Port Mansfield to the Rio Grande out 20 nm
Gulf waters from Baffin Bay to Port Mansfield out 20 nm
1206 PM CST Wed Mar 4 2026

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

THURSDAY
Southeast winds 10 to 15 knots, increasing to 15 to 20 knots in the afternoon. Seas 3 to 5 feet. Wave Detail: Southeast 4 feet at 6 seconds.

THURSDAY NIGHT
Southeast winds around 15 knots. Seas 4 to 5 feet. Wave Detail: Southeast 5 feet at 7 seconds. A slight chance of showers after midnight.

FRIDAY
Southeast winds around 15 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: Southeast 5 feet at 7 seconds. A slight chance of showers.

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

SATURDAY
Southeast winds 10 to 15 knots. Seas 4 to 5 feet. Wave Detail: Southeast 5 feet at 7 seconds. A slight chance of showers.

SATURDAY NIGHT
Southeast winds 10 to 15 knots. Seas 4 to 5 feet. A slight chance of showers in the evening, then a chance of showers with a slight chance of thunderstorms after midnight.

SUNDAY
Southeast winds around 10 knots. Seas 3 to 5 feet. A chance of showers.

SUNDAY NIGHT
Southeast winds around 10 knots. Seas 4 to 5 feet. A slight chance of thunderstorms in the evening. A slight chance of showers.

MONDAY
Southeast winds 10 to 15 knots. Seas 3 to 5 feet.

MONDAY NIGHT
Southeast winds around 15 knots. Seas 4 to 6 feet, occasionally to 8 feet.

Winds and seas higher in and near thunderstorms.

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GMZ170-175-050715
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
1206 PM CST Wed Mar 4 2026

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

THURSDAY
Southeast winds around 15 knots. Seas 4 to 5 feet. Wave Detail: Southeast 4 feet at 7 seconds.

THURSDAY NIGHT
Southeast 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.

FRIDAY
Southeast winds 15 to 20 knots. Seas 5 to 7 feet, occasionally to 9 feet, subsiding to 4 to 5 feet in the afternoon. Wave Detail: Southeast 6 feet at 7 seconds, becoming southeast 5 feet at 7 seconds.

FRIDAY NIGHT
Southeast winds around 15 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: Southeast 5 feet at 7 seconds.

SATURDAY
Southeast winds 10 to 15 knots. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: Southeast 5 feet at 7 seconds. A slight chance of showers in the morning.

SATURDAY NIGHT
Southeast winds 10 to 15 knots. Seas 5 to 7 feet, occasionally to 9 feet. A slight chance of showers. A slight chance of thunderstorms after midnight.

SUNDAY
Southeast winds around 10 knots. Seas 4 to 5 feet. A chance of showers.

SUNDAY NIGHT
Southeast winds 10 to 15 knots. Seas 4 to 6 feet, occasionally to 8 feet. A slight chance of thunderstorms in the evening. A slight chance of showers.

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

MONDAY NIGHT
Southeast winds 15 to 20 knots. Seas 4 to 5 feet, building to 5 to 7 feet, occasionally to 9 feet after midnight.

Winds and seas higher in and near thunderstorms.