National Weather Service Marine Forecast FZUS54 KBRO

FZUS54 KBRO 150648
CWFBRO

Coastal Waters Forecast for the Lower Texas Coast
National Weather Service Brownsville TX
148 AM CDT Wed Apr 15 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.

GMZ100-151930
148 AM CDT Wed Apr 15 2026

SYNOPSIS
An enhanced pressure gradient will produce breezy winds and moderate seas along the Lower Texas Coast through the end of the week, with Small Craft Should Exercise Caution likely. The passage of a cold front during the weekend will increase the likelihood of Small Craft Advisory due to stronger winds and higher seas.

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GMZ130-132-135-151930
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
148 AM CDT Wed Apr 15 2026

SMALL CRAFT SHOULD EXERCISE CAUTION

TODAY
Southeast winds 10 to 15 knots, increasing to 15 to 20 knots this afternoon. A moderate chop on the bay, increasing to choppy bay waters this afternoon.

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 late in the afternoon. A moderate chop on the bay, increasing to choppy bay waters late in the afternoon.

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

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

FRIDAY NIGHT
Southeast winds 15 to 20 knots. Choppy bay waters.

SATURDAY
Southeast winds 10 to 15 knots, becoming around 15 knots late in the afternoon. A moderate chop on the bay.

SATURDAY NIGHT
East winds 10 to 15 knots, becoming northeast after midnight, then increasing to 15 to 20 knots early in the morning. A moderate chop on the bay, increasing to choppy bay waters early in the morning. A chance of showers with a slight chance of thunderstorms.

SUNDAY
Northeast winds 20 to 25 knots. Rough bay waters. A chance of showers early in the morning. A slight chance of thunderstorms until late afternoon. Showers likely in the afternoon.

SUNDAY NIGHT
Northeast winds 15 to 20 knots, diminishing to 10 to 15 knots after midnight. Choppy bay waters, diminishing to a moderate chop on the bay after midnight. A chance of showers.

Winds and waves higher in and near thunderstorms.

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GMZ150-155-151930
Gulf waters from Port Mansfield to the Rio Grande out 20 nm
Gulf waters from Baffin Bay to Port Mansfield out 20 nm
148 AM CDT Wed Apr 15 2026

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

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

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

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

FRIDAY
Southeast winds 15 to 20 knots. Seas 4 to 5 feet. Wave Detail: Southeast 5 feet at 7 seconds.

FRIDAY NIGHT
Southeast winds 15 to 20 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 4 to 5 feet.

SATURDAY NIGHT
East winds 10 to 15 knots, becoming northeast 15 to 20 knots after midnight, then increasing to 20 to 25 knots early in the morning. Seas 3 to 4 feet, building to 4 to 6 feet, occasionally to 8 feet after midnight. A chance of showers with a slight chance of thunderstorms.

SUNDAY
Northeast winds 20 to 25 knots. Seas 6 to 9 feet, occasionally to 11 feet. A slight chance of thunderstorms until late afternoon. Showers likely.

SUNDAY NIGHT
Northeast winds 15 to 20 knots. Seas 6 to 8 feet, occasionally to 10 feet. Showers likely early in the evening, then a chance of showers in the late evening and overnight.

Winds and seas higher in and near thunderstorms.

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GMZ170-175-151930
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
148 AM CDT Wed Apr 15 2026

SMALL CRAFT SHOULD EXERCISE CAUTION

TODAY
Southeast winds 10 to 15 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: Southeast 5 feet at 7 seconds.

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

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

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

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

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

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

SATURDAY NIGHT
East winds 10 to 15 knots, increasing to 15 to 20 knots after midnight, then becoming northeast 20 to 25 knots early in the morning. 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
Northeast winds 20 to 25 knots. Seas 6 to 9 feet, occasionally to 11 feet. Showers likely with a slight chance of thunderstorms until late afternoon, then a chance of showers late in the afternoon.

SUNDAY NIGHT
Northeast winds 20 to 25 knots, becoming east 15 to 20 knots after midnight. Seas 7 to 9 feet, occasionally to 11 feet, subsiding to 5 to 7 feet, occasionally to 9 feet after midnight. A chance of showers.

Winds and seas higher in and near thunderstorms.