Coastal Waters Forecast for Coastal waters from Port Mansfield TX to the Rio Grande River out 20 NM (GMZ150) (Text-Only)
NWS Forecast for: Coastal waters from Port Mansfield TX to the Rio Grande River out 20 NM (GMZ150)
Issued by: National Weather Service Brownsville, TX
Last Update: 1224 PM CDT Tue Jun 30 2026


Tonight: Southeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave detail: southeast 3 feet at 6 seconds and east 1 foot at 9 seconds.

Wednesday: Southeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave detail: southeast 3 feet at 6 seconds.

Wednesday Night: Southeast winds 10 to 15 knots. Seas 2 to 4 feet. Wave detail: southeast 3 feet at 6 seconds.

Thursday: Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave detail: southeast 3 feet at 6 seconds.

Thursday Night: Southeast winds 10 to 15 knots. Seas 2 to 3 feet. Wave detail: southeast 3 feet at 6 seconds.

Friday: Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave detail: southeast 2 feet at 5 seconds.

Friday Night: Southeast winds 10 to 15 knots. Seas 2 to 3 feet.

Saturday: Southeast winds 5 to 10 knots increasing to 10 to 15 knots in the afternoon. Seas 2 to 3 feet.

Saturday Night: Southeast winds 10 to 15 knots. Seas 2 to 3 feet.

Sunday: Southeast winds 10 to 15 knots. Seas 2 to 3 feet.

Sunday Night: Southeast winds 10 to 15 knots. Seas 2 to 4 feet building to 4 to 5 feet after midnight.







Zone Forecast: Coastal waters from Port Mansfield TX to the Rio Grande River out 20 NM (GMZ150)

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