National Weather Service Marine Forecast FZUS54 KBRO

FZUS54 KBRO 110659
CWFBRO

Coastal Waters Forecast for the Lower Texas Coast
National Weather Service Brownsville TX
1259 AM CST Tue Nov 11 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.

GMZ100-111930
1259 AM CST Tue Nov 11 2025

SYNOPSIS
Marine conditions will continue to improve through today as the pressure gradient continues to relax. However, later this evening/tonight, marine conditions are expected to deteriorate as southerly winds strengthen and wave heights increase. Small Craft Exercise Caution (SCEC) conditions are expected to develop later this evening/tonight and persist through Wednesday. Wednesday night through Thursday, marine conditions improve slightly as winds relax and wave heights decrease some. However, Thursday night and especially on Friday, marine conditions are expected to deteriorate once again as winds and wave heights both increase. SCEC to Small Craft Advisory (SCA) conditions are possible Friday/Friday night through Sunday. Marine conditions are expected to show gradual improvements during the early parts of next week.

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GMZ130-132-135-111930
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
1259 AM CST Tue Nov 11 2025

TODAY
South winds 5 to 10 knots becoming southeast 10 to 15 knots this afternoon. Light chop on the bay becoming a moderate chop this afternoon.

TONIGHT
South winds 15 to 20 knots. Choppy on the bay.

WEDNESDAY
South winds 10 to 15 knots becoming southeast 15 to 20 knots in the afternoon. A moderate chop on the bay becoming choppy in the afternoon.

WEDNESDAY NIGHT
South winds 10 to 15 knots. A moderate chop on the bay.

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

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

FRIDAY
Southeast winds 15 to 20 knots. Choppy on the bay.

FRIDAY NIGHT
Southeast winds 15 to 20 knots. Choppy on the bay.

SATURDAY
Southeast winds 15 to 20 knots. Choppy on the bay.

SATURDAY NIGHT
Southeast winds 15 to 20 knots. Choppy on the bay. A slight chance of showers after midnight.

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GMZ150-155-111930
Gulf waters from Port Mansfield to the Rio Grande out 20 nm
Gulf waters from Baffin Bay to Port Mansfield out 20 nm
1259 AM CST Tue Nov 11 2025

TODAY
Southeast winds 5 to 10 knots increasing to 10 to 15 knots this afternoon. Seas 2 to 3 feet. Wave Detail: East 3 feet at 7 seconds and southeast 2 feet at 3 seconds.

TONIGHT
South winds 15 to 20 knots. Seas 3 to 5 feet. Wave Detail: Southeast 4 feet at 5 seconds.

WEDNESDAY
South winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: Southeast 4 feet at 6 seconds.

WEDNESDAY NIGHT
South winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: Southeast 3 feet at 5 seconds.

THURSDAY
Southeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: Southeast 3 feet at 6 seconds.

THURSDAY NIGHT
Southeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: Southeast 3 feet at 6 seconds.

FRIDAY
Southeast winds 10 to 15 knots increasing to 15 to 20 knots in the afternoon. Seas 4 to 5 feet.

FRIDAY NIGHT
Southeast winds 15 to 20 knots. Seas 4 to 5 feet building to 5 to 7 feet, with occasional seas up to 8 feet after midnight.

SATURDAY
Southeast winds 15 to 20 knots. Seas 5 to 7 feet, with occasional seas up to 8 feet.

SATURDAY NIGHT
Southeast winds 15 to 20 knots. Seas 4 to 6 feet, with occasional seas up to 7 feet. A slight chance of showers.

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GMZ170-175-111930
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
1259 AM CST Tue Nov 11 2025

TODAY
Southeast winds 5 to 10 knots increasing to 10 to 15 knots this afternoon. Seas 2 to 3 feet. Wave Detail: Northeast 3 feet at 7 seconds and southeast 2 feet at 3 seconds.

TONIGHT
South winds 15 to 20 knots. Seas 3 to 5 feet. Wave Detail: Southeast 4 feet at 5 seconds.

WEDNESDAY
South winds 10 to 15 knots. Seas 3 to 5 feet. Wave Detail: South 4 feet at 5 seconds.

WEDNESDAY NIGHT
Southeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: South 3 feet at 5 seconds.

THURSDAY
Southeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: South 3 feet at 5 seconds.

THURSDAY NIGHT
Southeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: Southeast 4 feet at 6 seconds.

FRIDAY
Southeast winds around 15 knots. Seas 4 to 5 feet.

FRIDAY NIGHT
Southeast winds 15 to 20 knots. Seas 4 to 5 feet building to 5 to 7 feet, with occasional seas up to 8 feet after midnight.

SATURDAY
Southeast winds 15 to 20 knots. Seas 6 to 8 feet, with occasional seas up to 9 feet. A slight chance of showers and thunderstorms in the afternoon.

SATURDAY NIGHT
Southeast winds 15 to 20 knots. Seas 5 to 7 feet, with occasional seas up to 8 feet. A slight chance of showers in the evening, then a chance of showers after midnight.

Winds and seas higher in and near thunderstorms.