| NWS Forecast for: Coastal waters from Baffin Bay to Port Mansfield TX out 20 NM (GMZ155) Issued by: National Weather Service Brownsville, TX Last Update: 135 AM CDT Sat Apr 18 2026 |  |
| Today: Southeast winds 10 to 15 knots, becoming east late this afternoon. Seas 3 to 5 feet. Wave detail: southeast 4 feet at 7 seconds. Tonight: East winds 10 to 15 knots, becoming northeast after midnight, then increasing to 20 to 25 knots early in the morning. Seas 3 to 5 feet. Wave detail: east 5 feet at 6 seconds. A slight chance of thunderstorms. A chance of showers in the evening, then showers after midnight. Sunday: Northeast winds 20 to 25 knots. Seas 6 to 8 feet, occasionally to 10 feet. Wave detail: northeast 7 feet at 7 seconds. A slight chance of thunderstorms early in the morning. Showers. A slight chance of thunderstorms in the afternoon. Sunday Night: Northeast winds 15 to 20 knots. Seas 5 to 7 feet, occasionally to 9 feet, subsiding to 4 to 5 feet after midnight. Wave detail: northeast 6 feet at 7 seconds, becoming northeast 5 feet at 7 seconds. A slight chance of thunderstorms in the evening. Showers likely. A chance of thunderstorms after midnight. Monday: East winds around 15 knots. Seas 4 to 5 feet. Wave detail: east 5 feet at 7 seconds. Showers with a chance of thunderstorms. Monday Night: East winds 15 to 20 knots, becoming southeast 10 to 15 knots after midnight. Seas 4 to 5 feet. Wave detail: east 5 feet at 6 seconds. A chance of thunderstorms. Showers early in the evening, then a chance of showers in the late evening and overnight. Tuesday: Southeast winds 10 to 15 knots. Seas 4 to 5 feet. A chance of showers with a slight chance of thunderstorms. Tuesday Night: Southeast winds 10 to 15 knots. Seas 3 to 4 feet. A slight chance of thunderstorms. A chance of showers early in the evening, then a slight chance of showers in the late evening and overnight. Wednesday: Southeast winds 10 to 15 knots. Seas 3 to 4 feet. A slight chance of showers. A slight chance of thunderstorms in the afternoon. Wednesday Night: Southeast winds 10 to 15 knots. Seas 3 to 4 feet. A slight chance of showers early in the evening. winds and seas higher in and near thunderstorms. | |
| Zone Forecast: Coastal waters from Baffin Bay to Port Mansfield TX out 20 NM (GMZ155) | |
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