National Weather Service Marine Forecast FZUS54 KBRO

FZUS54 KBRO 120703
CWFBRO

Coastal Waters Forecast for the Lower Texas Coast
National Weather Service Brownsville TX
103 AM CST Thu Feb 12 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.

GMZ100-121930
103 AM CST Thu Feb 12 2026

SYNOPSIS
The passage of a weak cold front through the lower Texas coastal waters is anticipated for the weekend. The front may produce slightly adverse marine conditions for the far offshore waters towards the end of the week and through the weekend, with Small Craft Should Exercise Caution possible. Overall, however, light to moderate winds and low to moderate seas will prevail through the next few days along the Lower Texas Coast.

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GMZ130-132-135-121930
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
103 AM CST Thu Feb 12 2026

TODAY
Light and variable winds, becoming east 5 to 10 knots. A light chop on the bay. Patchy fog this morning.

TONIGHT
Southeast winds 5 to 10 knots. A light chop on the bay.

FRIDAY
Southeast winds 5 to 10 knots, increasing to 10 to 15 knots in the afternoon. A moderate chop on the bay.

FRIDAY NIGHT
Southeast winds 10 to 15 knots. A moderate chop on the bay. A slight chance of showers after midnight.

SATURDAY
Southeast winds 10 to 15 knots, becoming south 15 to 20 knots in the afternoon, then diminishing to 10 to 15 knots late in the afternoon. A moderate chop on the bay, increasing to choppy bay waters in the afternoon, then diminishing to a moderate chop on the bay late in the afternoon. A slight chance of showers.

SATURDAY NIGHT
South winds 5 to 10 knots, becoming west early in the morning. A light chop on the bay.

SUNDAY
Northwest winds around 10 knots, becoming north in the afternoon. A light chop on the bay.

SUNDAY NIGHT
Northeast winds 5 to 10 knots. A light chop on the bay.

MONDAY
Northeast winds around 5 knots, becoming east in the afternoon. A light chop on the bay.

MONDAY NIGHT
Southeast winds around 10 knots, becoming 5 to 10 knots early in the morning. A light chop on the bay.

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GMZ150-155-121930
Gulf waters from Port Mansfield to the Rio Grande out 20 nm
Gulf waters from Baffin Bay to Port Mansfield out 20 nm
103 AM CST Thu Feb 12 2026

TODAY
Light and variable winds, becoming east 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 6 seconds. Patchy fog early this morning.

TONIGHT
Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 6 seconds and east 1 foot at 2 seconds.

FRIDAY
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 5 seconds.

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

SATURDAY
South winds around 15 knots. Seas 3 to 5 feet. Wave Detail: Southeast 5 feet at 6 seconds. A chance of showers.

SATURDAY NIGHT
South winds 10 to 15 knots, becoming west early in the morning. Seas 3 to 4 feet. Wave Detail: Southeast 4 feet at 7 seconds. A slight chance of showers and thunderstorms in the evening.

SUNDAY
Northwest winds 10 to 15 knots, becoming north early in the afternoon, then diminishing to 5 to 10 knots late in the afternoon. Seas 3 to 5 feet.

SUNDAY NIGHT
Northeast winds 5 to 10 knots. Seas 2 to 4 feet.

MONDAY
Northeast winds around 5 knots, becoming east in the afternoon. Seas 2 to 3 feet.

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

Winds and seas higher in and near thunderstorms.

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GMZ170-175-121930
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
103 AM CST Thu Feb 12 2026

TODAY
Southeast winds around 5 knots, becoming 5 to 10 knots late this afternoon. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 6 seconds.

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

FRIDAY
Southeast winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 6 seconds and east 1 foot at 5 seconds. A slight chance of showers in the afternoon.

FRIDAY NIGHT
Southeast winds 15 to 20 knots. Seas 3 to 5 feet. Wave Detail: Southeast 5 feet at 6 seconds. A slight chance of showers after midnight.

SATURDAY
South winds 15 to 20 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: Southeast 5 feet at 7 seconds. A chance of showers. A slight chance of thunderstorms late in the afternoon.

SATURDAY NIGHT
South winds 10 to 15 knots, becoming west early in the morning. Seas 4 to 5 feet. Wave Detail: Southeast 5 feet at 7 seconds. A slight chance of showers and thunderstorms.

SUNDAY
Northwest winds 10 to 15 knots, becoming north late in the afternoon. Seas 4 to 6 feet, occasionally to 8 feet.

SUNDAY NIGHT
North winds 5 to 10 knots. Seas 3 to 4 feet.

MONDAY
Northeast winds 5 to 10 knots, becoming east in the afternoon. Seas 3 to 4 feet.

MONDAY NIGHT
Southeast winds around 10 knots, becoming 10 to 15 knots after midnight. Seas 3 to 4 feet.

Winds and seas higher in and near thunderstorms.