National Weather Service Marine Forecast FZUS54 KBRO

FZUS54 KBRO 190714
CWFBRO

Coastal Waters Forecast for the Lower Texas Coast
National Weather Service Brownsville TX
214 AM CDT Mon Oct 19 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.

GMZ100-192030
214 AM CDT Mon Oct 19 2026

SYNOPSIS
Light to moderate winds and generally moderate seas are expected through the forecast. However, Small Craft Should Exercise Caution or Small Craft Advisory may be needed beginning Tuesday night, especially for the far offshore Gulf of America waters.

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GMZ130-132-135-192030
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
214 AM CDT Mon Oct 19 2026

TODAY
Northeast winds 10 to 15 knots. A moderate chop on the bay. A slight chance of showers this afternoon.

TONIGHT
Northeast winds 10 to 15 knots. A moderate chop on the bay. A slight chance of showers early in the evening. A slight chance of showers after midnight.

TUESDAY
Northeast winds 10 to 15 knots. A moderate chop on the bay. A slight chance of showers.

TUESDAY NIGHT
Northeast winds 10 to 15 knots, diminishing to 5 to 10 knots after midnight. A light chop on the bay. A slight chance of showers. A slight chance of thunderstorms early in the morning.

WEDNESDAY
Northeast winds 10 to 15 knots. A moderate chop on the bay. A chance of showers with a slight chance of thunderstorms.

WEDNESDAY NIGHT
East winds 10 to 15 knots, diminishing to 5 to 10 knots after midnight. A light chop on the bay. A chance of showers early in the evening. A slight chance of showers after midnight.

THURSDAY
East winds 5 to 10 knots. A light chop on the bay.

THURSDAY NIGHT
East winds 5 to 10 knots, becoming southeast early in the morning. A light chop on the bay.

FRIDAY
East winds 5 to 10 knots. A light chop on the bay.

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

Winds and waves higher in and near thunderstorms.

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GMZ150-155-192030
Gulf waters from Port Mansfield to the Rio Grande out 20 nm
Gulf waters from Baffin Bay to Port Mansfield out 20 nm
214 AM CDT Mon Oct 19 2026

TODAY
Northeast winds 10 to 15 knots. Seas 3 to 5 feet. Wave Detail: East 5 feet at 8 seconds. A chance of showers this afternoon.

TONIGHT
Northeast winds 10 to 15 knots. Seas 4 to 5 feet. Wave Detail: East 5 feet at 8 seconds. A chance of showers early in the evening. A slight chance of showers after midnight.

TUESDAY
Northeast winds 10 to 15 knots. Seas 4 to 5 feet. Wave Detail: East 5 feet at 8 seconds. A slight chance of showers in the afternoon. A slight chance of showers and thunderstorms late in the afternoon.

TUESDAY NIGHT
Northeast winds 10 to 15 knots. Seas 4 to 5 feet. Wave Detail: East 5 feet at 8 seconds. A chance of showers with a slight chance of thunderstorms.

WEDNESDAY
Northeast winds around 10 knots. Seas 4 to 5 feet. Wave Detail: East 5 feet at 8 seconds. A slight chance of thunderstorms. Showers likely until late afternoon, then a chance of showers late in the afternoon.

WEDNESDAY NIGHT
East winds 10 to 15 knots, diminishing to 5 to 10 knots after midnight. Seas 4 to 5 feet. Wave Detail: East 5 feet at 8 seconds. A chance of showers with a slight chance of thunderstorms early in the evening, then a slight chance of showers in the late evening and overnight.

THURSDAY
East winds around 10 knots. Seas 3 to 4 feet. A slight chance of showers early in the morning.

THURSDAY NIGHT
East winds 5 to 10 knots. Seas 3 to 4 feet.

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

FRIDAY NIGHT
Southeast winds 10 to 15 knots. Seas 2 to 4 feet.

Winds and seas higher in and near thunderstorms.

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GMZ170-175-192030
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
214 AM CDT Mon Oct 19 2026

TODAY
Northeast winds 10 to 15 knots. Seas 4 to 5 feet. Wave Detail: East 5 feet at 8 seconds. A chance of showers.

TONIGHT
Northeast winds 15 to 20 knots, becoming east 10 to 15 knots after midnight. Seas 4 to 5 feet. Wave Detail: East 5 feet at 8 seconds. A chance of showers early in the evening.

TUESDAY
Northeast winds 10 to 15 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: East 5 feet at 8 seconds. A slight chance of showers in the afternoon. A chance of showers with a slight chance of thunderstorms late in the afternoon.

TUESDAY NIGHT
Northeast winds around 15 knots, becoming east after midnight. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: Northeast 5 feet at 8 seconds. A slight chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight.

WEDNESDAY
East winds 10 to 15 knots. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: East 6 feet at 8 seconds. A slight chance of thunderstorms. Showers likely until late afternoon, then a chance of showers late in the afternoon.

WEDNESDAY NIGHT
East winds 10 to 15 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: East 5 feet at 8 seconds. A chance of showers with a slight chance of thunderstorms early in the evening, then a slight chance of showers late in the evening.

THURSDAY
Northeast winds 10 to 15 knots. Seas 3 to 5 feet.

THURSDAY NIGHT
East winds 10 to 15 knots. Seas 3 to 4 feet.

FRIDAY
East winds 5 to 10 knots. Seas 2 to 4 feet.

FRIDAY NIGHT
East winds 10 to 15 knots. Seas 2 to 4 feet.

Winds and seas higher in and near thunderstorms.