FZUS54 KBRO 192016 CWFBRO Coastal Waters Forecast for the Lower Texas Coast National Weather Service Brownsville TX 316 PM CDT Tue May 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. GMZ100-200915- 316 PM CDT Tue May 19 2026 .SYNOPSIS... An enhanced pressure gradient will maintain slightly adverse marine conditions with moderate to fresh southeasterly winds, moderate seas, and choppy bay conditions through much of the week. Low to medium (30 to 60 percent) rain chances return tonight, lasting through the week. $$ GMZ130-132-135-200915- 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- 316 PM CDT Tue May 19 2026 .TONIGHT...Southeast winds 10 to 15 knots. A moderate chop on the bay. A slight chance of showers and thunderstorms after midnight. .WEDNESDAY...Southeast winds 10 to 15 knots. A moderate chop on the bay. .WEDNESDAY NIGHT...Southeast winds 10 to 15 knots. A moderate chop on the bay. .THURSDAY...Southeast winds 5 to 10 knots increasing to 10 to 15 knots in the afternoon. Light chop on the bay becoming a moderate chop in the afternoon. A chance of showers and thunderstorms. .THURSDAY NIGHT...Southeast winds 10 to 15 knots becoming south 5 to 10 knots after midnight. A moderate chop on the bay becoming light chop after midnight. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. .FRIDAY...Southeast winds 10 to 15 knots. A moderate chop on the bay. A chance of showers in the morning. A slight chance of thunderstorms. A slight chance of showers in the afternoon. .FRIDAY NIGHT...Southeast winds 10 to 15 knots decreasing to 5 to 10 knots after midnight. A moderate chop on the bay becoming light chop after midnight. A chance of thunderstorms in the evening. A chance of showers. A slight chance of thunderstorms after midnight. .SATURDAY...South winds 5 to 10 knots becoming southeast 10 to 15 knots in the afternoon. Light chop on the bay becoming a moderate chop in the afternoon. A chance of showers and thunderstorms. .SATURDAY NIGHT...Southeast winds 10 to 15 knots decreasing to 5 to 10 knots after midnight. A moderate chop on the bay becoming light chop after midnight. A chance of showers in the evening. A chance of thunderstorms. Showers likely after midnight. .SUNDAY...South winds 5 to 10 knots becoming southeast in the afternoon. Light chop on the bay. Showers likely with a chance of thunderstorms. .SUNDAY NIGHT...Southeast winds 5 to 10 knots decreasing to around 5 knots after midnight. Light chop on the bay becoming smooth after midnight. A chance of showers and thunderstorms. Winds and waves higher in and near thunderstorms. $$ GMZ150-155-200915- Gulf waters from Port Mansfield to the Rio Grande out 20 nm- Gulf waters from Baffin Bay to Port Mansfield out 20 nm- 316 PM CDT Tue May 19 2026 ...SMALL CRAFT SHOULD EXCERCISE CAUTION.... .TONIGHT...Southeast winds 10 to 15 knots. Seas 4 to 5 feet. Wave Detail: Southeast 5 feet at 7 seconds. A slight chance of showers and thunderstorms after midnight. .WEDNESDAY...Southeast winds 10 to 15 knots. Seas 4 to 5 feet. Wave Detail: Southeast 5 feet at 8 seconds. .WEDNESDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: East 4 feet at 7 seconds. .THURSDAY...Southeast winds 5 to 10 knots increasing to 10 to 15 knots in the afternoon. Seas 3 to 4 feet. Wave Detail: Southeast 4 feet at 7 seconds. A slight chance of thunderstorms in the morning. A chance of showers. A chance of thunderstorms in the afternoon. .THURSDAY NIGHT...Southeast winds 10 to 15 knots becoming south 5 to 10 knots after midnight. Seas 3 to 4 feet. Wave Detail: Southeast 4 feet at 7 seconds. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. .FRIDAY...Southeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: Southeast 3 feet at 7 seconds. A slight chance of showers and thunderstorms. .FRIDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to 4 feet. A chance of showers and thunderstorms. .SATURDAY...South winds 5 to 10 knots becoming southeast 10 to 15 knots in the afternoon. Seas 3 to 4 feet. A chance of showers and thunderstorms. .SATURDAY NIGHT...Southeast winds 10 to 15 knots decreasing to 5 to 10 knots after midnight. Seas 3 to 4 feet. A chance of showers in the evening. A chance of thunderstorms. Showers likely after midnight. .SUNDAY...Southeast winds 5 to 10 knots. Seas 3 to 4 feet. Showers likely in the morning. A chance of thunderstorms. A chance of showers in the afternoon. .SUNDAY NIGHT...Southeast winds 5 to 10 knots. Seas 3 to 4 feet. A slight chance of thunderstorms in the evening. A chance of showers. A chance of thunderstorms after midnight. Winds and seas higher in and near thunderstorms. $$ GMZ170-175-200915- 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- 316 PM CDT Tue May 19 2026 ...SMALL CRAFT SHOULD EXCERCISE CAUTION.... .TONIGHT...Southeast winds 10 to 15 knots. Seas 5 to 7 feet, with occasional seas up to 8 feet. Wave Detail: Southeast 6 feet at 7 seconds. A slight chance of showers and thunderstorms after midnight. .WEDNESDAY...Southeast winds 10 to 15 knots. Seas 4 to 6 feet, with occasional seas up to 7 feet. Wave Detail: Southeast 5 feet at 8 seconds. .WEDNESDAY NIGHT...Southeast winds 10 to 15 knots. Seas 4 to 5 feet. Wave Detail: Southeast 4 feet at 7 seconds. .THURSDAY...Southeast winds 10 to 15 knots. Seas 4 to 5 feet. Wave Detail: Southeast 4 feet at 7 seconds. A slight chance of thunderstorms in the morning. A chance of showers. A chance of thunderstorms in the afternoon. .THURSDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: Southeast 4 feet at 7 seconds. A chance of showers with a slight chance of thunderstorms after midnight. .FRIDAY...Southeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: Southeast 4 feet at 6 seconds. A slight chance of showers and thunderstorms in the morning. .FRIDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to 4 feet. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. .SATURDAY...Southeast winds 10 to 15 knots. Seas 3 to 4 feet. A chance of showers and thunderstorms, mainly in the morning. .SATURDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to 4 feet. A slight chance of thunderstorms in the evening. A chance of showers. A chance of thunderstorms after midnight. .SUNDAY...South winds 10 to 15 knots becoming southeast 5 to 10 knots in the afternoon. Seas 3 to 5 feet. Showers likely with a chance of thunderstorms in the morning, then a chance of showers with a slight chance of thunderstorms in the afternoon. .SUNDAY NIGHT...Southeast winds 5 to 10 knots. Seas 3 to 4 feet. A slight chance of thunderstorms in the evening. A chance of showers. A chance of thunderstorms after midnight. Winds and seas higher in and near thunderstorms. $$