National Weather Service Marine Forecast FZUS54 KBRO

FZUS54 KBRO 241734
CWFBRO

Coastal Waters Forecast for the Lower Texas Coast
National Weather Service Brownsville TX
1134 AM CST Wed Dec 24 2025

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.

GMZ100-250615
1134 AM CST Wed Dec 24 2025

SYNOPSIS
Generally favorable marine conditions will prevail through this weekend, though patchy dense fog is possible late tonight into Christmas morning across the Bay and nearshore waters. Hazardous marine conditions will return late Sunday night in wake a strong cold front. Small Craft Advisories are likely late Sunday night into Monday due to strong northerly winds and building wave heights. Guidance continues to trend wind speed upwards, so will closely monitor for the potential for Gale Watches/Warnings.

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GMZ130-132-135-250615
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
1134 AM CST Wed Dec 24 2025

REST OF TODAY
Southeast winds 5 to 10 knots. Light chop on the bay.

TONIGHT
Southeast winds 5 to 10 knots. Light chop on the bay. Patchy dense fog early in the morning.

THURSDAY
East winds 5 to 10 knots. Light chop on the bay. Patchy dense fog early in the morning.

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

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

FRIDAY NIGHT
South winds around 10 knots. Light 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. A moderate chop on the bay.

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

SUNDAY NIGHT
Southeast winds 5 to 10 knots, becoming east after midnight, then becoming northeast 15 to 20 knots with gusts up to 30 knots early in the morning. Light chop on the bay, increasing to choppy early in the morning. A chance of showers after midnight.

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GMZ150-155-250615
Gulf waters from Port Mansfield to the Rio Grande out 20 nm
Gulf waters from Baffin Bay to Port Mansfield out 20 nm
1134 AM CST Wed Dec 24 2025

REST OF TODAY
East winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: East 3 feet at 7 seconds.

TONIGHT
Southeast winds 5 to 10 knots. Seas 3 to 4 feet. Wave Detail: East 3 feet at 7 seconds.

THURSDAY
East winds 5 to 10 knots. Seas 3 to 4 feet. Wave Detail: East 3 feet at 8 seconds.

THURSDAY NIGHT
Southeast winds 5 to 10 knots, becoming south after midnight. Seas 3 to 4 feet. Wave Detail: East 3 feet at 8 seconds.

FRIDAY
South winds 5 to 10 knots. Seas 3 to 4 feet. Wave Detail: East 3 feet at 7 seconds.

FRIDAY NIGHT
South winds around 10 knots. Seas 3 to 4 feet. Wave Detail: Southeast 3 feet at 7 seconds.

SATURDAY
South winds 10 to 15 knots. Seas 3 to 4 feet.

SATURDAY NIGHT
Southeast winds 10 to 15 knots. Seas 3 to 4 feet.

SUNDAY
Southeast winds 10 to 15 knots. Seas 2 to 3 feet.

SUNDAY NIGHT
Southeast winds 5 to 10 knots, becoming east after midnight, then becoming northeast 20 to 25 knots with gusts up to 35 knots early in the morning. Seas 2 to 3 feet, building to 3 to 5 feet after midnight. A chance of showers with a slight chance of thunderstorms after midnight.

Winds and seas higher in and near thunderstorms.

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GMZ170-175-250615
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
1134 AM CST Wed Dec 24 2025

REST OF TODAY
East winds 5 to 10 knots. Seas 3 to 4 feet. Wave Detail: East 3 feet at 7 seconds.

TONIGHT
Southeast winds around 10 knots. Seas 3 to 4 feet. Wave Detail: East 3 feet at 7 seconds.

THURSDAY
Southeast winds 5 to 10 knots. Seas 3 to 4 feet. Wave Detail: East 3 feet at 8 seconds.

THURSDAY NIGHT
Southeast winds around 10 knots, becoming south after midnight. Seas 3 to 4 feet. Wave Detail: East 3 feet at 8 seconds.

FRIDAY
South winds 5 to 10 knots. Seas 3 to 4 feet. Wave Detail: Southeast 3 feet at 7 seconds.

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

SATURDAY
South winds 10 to 15 knots. Seas 3 to 4 feet.

SATURDAY NIGHT
Southeast winds 10 to 15 knots. Seas 3 to 4 feet.

SUNDAY
South winds 10 to 15 knots. Seas 2 to 4 feet.

SUNDAY NIGHT
Southeast winds around 10 knots, becoming east 20 to 25 knots with gusts up to 35 knots early in the morning. Seas 2 to 3 feet, building to 3 to 5 feet after midnight. A chance of showers with a slight chance of thunderstorms after midnight.

Winds and seas higher in and near thunderstorms.