National Weather Service Marine Forecast FZUS54 KBRO

FZUS54 KBRO 130556
CWFBRO

Coastal Waters Forecast for the Lower Texas Coast
National Weather Service Brownsville TX
1156 PM CST Mon Jan 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.

GMZ100-131815
1156 PM CST Mon Jan 12 2026

SYNOPSIS
Gentle to moderate northeasterly winds and moderate seas continue into Wednesday. A Small Craft Advisory is possible Wednesday night into Thursday with the next front and fresh to strong northerly winds, building seas. Conditions improve Thursday into the weekend with a brief return of southeasterly winds.

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GMZ130-132-135-131815
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
1156 PM CST Mon Jan 12 2026

TODAY
Northwest winds 10 to 15 knots, becoming north 5 to 10 knots this afternoon. A moderate chop on the bay, diminishing to light chop this afternoon.

TONIGHT
North winds 5 to 10 knots. Light chop on the bay. A slight chance of showers late in the evening. A slight chance of showers early in the morning.

TUESDAY
North winds 5 to 10 knots. Light chop on the bay.

TUESDAY NIGHT
North winds around 5 knots, becoming northwest after midnight. Smooth on the bay.

WEDNESDAY
Northwest winds 5 to 10 knots, becoming around 10 knots late in the afternoon. Light chop on the bay.

WEDNESDAY NIGHT
North winds 10 to 15 knots, increasing to 15 to 20 knots in the late evening and overnight. A moderate chop on the bay, increasing to choppy in the late evening and overnight.

THURSDAY
North winds 10 to 15 knots, becoming northeast 5 to 10 knots late in the afternoon. A moderate chop on the bay, diminishing to light chop late in the afternoon.

THURSDAY NIGHT
East winds 5 to 10 knots, becoming south after midnight. Light chop on the bay, diminishing to smooth in the late evening and overnight.

FRIDAY
South winds 5 to 10 knots, becoming southeast late in the afternoon. Light chop on the bay.

FRIDAY NIGHT
Southeast winds 5 to 10 knots, becoming east early in the morning. Light chop on the bay.

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GMZ150-155-131815
Gulf waters from Port Mansfield to the Rio Grande out 20 nm
Gulf waters from Baffin Bay to Port Mansfield out 20 nm
1156 PM CST Mon Jan 12 2026

TODAY
North winds 10 to 15 knots, becoming around 10 knots this afternoon. Seas 3 to 5 feet. Wave Detail: Northeast 4 feet at 7 seconds and north 2 feet at 4 seconds.

TONIGHT
North winds 5 to 10 knots. Seas 2 to 4 feet. Wave Detail: East 3 feet at 7 seconds. A slight chance of showers late in the evening. A slight chance of showers early in the morning.

TUESDAY
North winds 5 to 10 knots. Seas 2 to 4 feet. Wave Detail: East 3 feet at 7 seconds.

TUESDAY NIGHT
North winds around 5 knots, becoming northwest after midnight. Seas 2 to 3 feet. Wave Detail: East 2 feet at 7 seconds.

WEDNESDAY
Northwest winds around 10 knots, becoming 10 to 15 knots late in the afternoon. Seas 2 to 3 feet. Wave Detail: Northwest 2 feet at 3 seconds and east 2 feet at 7 seconds.

WEDNESDAY NIGHT
North winds 10 to 15 knots, increasing to 15 to 20 knots in the late evening and overnight. Seas 2 to 4 feet, building to 5 to 7 feet, occasionally to 9 feet after midnight. Wave Detail: Northeast 4 feet at 6 seconds and north 2 feet at 3 seconds, becoming northeast 6 feet at 6 seconds.

THURSDAY
North winds 15 to 20 knots, becoming northeast 5 to 10 knots. Seas 5 to 7 feet, occasionally to 9 feet.

THURSDAY NIGHT
Northeast winds 5 to 10 knots, becoming southeast after midnight. Seas 2 to 4 feet.

FRIDAY
South winds 5 to 10 knots. Seas 2 to 3 feet.

FRIDAY NIGHT
Southeast winds 5 to 10 knots, becoming east early in the morning. Seas 2 to 3 feet.

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GMZ170-175-131815
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
1156 PM CST Mon Jan 12 2026

TODAY
North winds 5 to 10 knots. Seas 4 to 5 feet. Wave Detail: Northeast 4 feet at 7 seconds and north 2 feet at 4 seconds.

TONIGHT
Northeast winds 5 to 10 knots. Seas 3 to 4 feet. Wave Detail: Northeast 3 feet at 7 seconds and north 1 foot at 4 seconds.

TUESDAY
Northeast winds 5 to 10 knots. Seas 2 to 4 feet. Wave Detail: East 3 feet at 8 seconds. A slight chance of showers early in the morning.

TUESDAY NIGHT
Northeast winds around 5 knots, becoming northwest after midnight. Seas 2 to 3 feet. Wave Detail: East 2 feet at 7 seconds and northwest 1 foot at 3 seconds.

WEDNESDAY
Northwest winds 10 to 15 knots. Seas 2 to 4 feet. Wave Detail: Northwest 3 feet at 4 seconds and east 2 feet at 7 seconds.

WEDNESDAY NIGHT
North winds 15 to 20 knots, increasing to 20 to 25 knots with gusts up to 30 knots in the late evening and overnight. Seas 3 to 5 feet, building to 6 to 8 feet, occasionally to 10 feet after midnight. Wave Detail: Northwest 5 feet at 5 seconds and east 1 foot at 6 seconds, becoming north 7 feet at 7 seconds.

THURSDAY
North winds 15 to 20 knots with gusts up to 30 knots, diminishing to 10 to 15 knots late in the afternoon. Seas 6 to 8 feet, occasionally to 10 feet, subsiding to 4 to 6 feet, occasionally to 8 feet in the afternoon.

THURSDAY NIGHT
Northeast winds 5 to 10 knots, becoming southeast after midnight. Seas 2 to 4 feet.

FRIDAY
South winds 5 to 10 knots. Seas 2 to 3 feet.

FRIDAY NIGHT
Southeast winds 5 to 10 knots, becoming east early in the morning. Seas 2 to 3 feet.