FZUS54 KHGX 191141 CWFHGX Coastal Waters Forecast for Texas National Weather Service Houston/Galveston TX 641 AM CDT Tue May 19 2026 Upper Texas coastal waters from High Island to the Matagorda Ship Channel out 60 nautical miles including Galveston and Matagorda Bays. 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. GMZ300-200015- 641 AM CDT Tue May 19 2026 .Synopsis For High Island to the Matagorda Ship Channel Out 60 NM including Galveston and Matagorda Bays. A weakening line of thunderstorms will continue to push over the northwest Gulf this morning, resulting in locally gusty winds, especially offshore. Otherwise, gusty southeast winds and enhanced seas continue today. Winds and seas should somewhat lower compared to recent days. Showers and thunderstorms are expected overnight into Wednesday morning. Some storms may be strong to severe, capable of strong and directionally variable winds. Shower and thunderstorm chances will remain elevated through the end of the week. Winds should generally remain light to moderate from the southeast. Stronger gusts possible in the vicinity of thunderstorms. $$ GMZ335-200015- Galveston Bay- 641 AM CDT Tue May 19 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 9 AM CDT THIS MORNING... .TODAY...Southeast winds 15 to 20 knots. Bay waters choppy. A chance of showers with isolated thunderstorms this morning. .TONIGHT...Southeast winds 10 to 15 knots. Bay waters slightly choppy. A chance of thunderstorms. A slight chance of showers in the evening, then a chance of showers after midnight. .WEDNESDAY...Southeast winds around 10 knots. Bay waters smooth to slightly choppy. A chance of showers and thunderstorms. .WEDNESDAY NIGHT...Southeast winds 10 to 15 knots, diminishing to around 10 knots after midnight. Bay waters slightly choppy, diminishing to smooth after midnight. .THURSDAY...Southeast winds around 10 knots, becoming south 10 to 15 knots in the afternoon. Bay waters smooth, increasing to slightly choppy in the afternoon. Showers likely with a chance of thunderstorms. .THURSDAY NIGHT...South winds 10 to 15 knots. Bay waters slightly choppy. A chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. .FRIDAY...South winds 10 to 15 knots. Bay waters slightly choppy. Showers and thunderstorms likely in the morning, then showers with a chance of thunderstorms in the afternoon. .FRIDAY NIGHT...South winds 10 to 15 knots, diminishing to around 10 knots after midnight. Bay waters slightly choppy, diminishing to smooth after midnight. A chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. .SATURDAY...Southeast winds 5 to 10 knots. Bay waters smooth. Showers likely with a chance of thunderstorms. .SATURDAY NIGHT...Southeast winds around 10 knots. Bay waters smooth to slightly choppy. A chance of thunderstorms. A chance of showers in the evening, then showers after midnight. Winds and waves higher in and near thunderstorms. $$ GMZ330-200015- Matagorda Bay- 641 AM CDT Tue May 19 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 9 AM CDT THIS MORNING... .TODAY...Southeast winds around 15 knots with gusts up to 25 knots. Bay waters slightly choppy. Showers with isolated thunderstorms early this morning, then a chance of showers with isolated thunderstorms late this morning. .TONIGHT...Southeast winds 10 to 15 knots. Bay waters slightly choppy. A chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. .WEDNESDAY...Southeast winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers and thunderstorms in the morning. .WEDNESDAY NIGHT...Southeast winds 10 to15 knots. Bay waters slightly choppy. .THURSDAY...Southeast winds 10 to 15 knots. Bay waters slightly choppy. A chance of thunderstorms. Showers. .THURSDAY NIGHT...South winds 10 to 15 knots. Bay waters slightly choppy. A chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. .FRIDAY...South winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers and thunderstorms. .FRIDAY NIGHT...Southeast winds 10 to 15 knots. Bay waters slightly choppy. A chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. .SATURDAY...Southeast winds 5 to 10 knots. Bay waters smooth. Showers with a chance of thunderstorms. .SATURDAY NIGHT...Southeast winds around 10 knots. Bay waters smooth to slightly choppy. A chance of thunderstorms. A chance of showers in the evening, then showers after midnight. Winds and waves higher in and near thunderstorms. $$ GMZ350-355-200015- Coastal waters from Freeport to Matagorda Ship Channel TX out 20 NM-Coastal waters from High Island to Freeport TX out 20 NM- 641 AM CDT Tue May 19 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 9 AM CDT THIS MORNING... .TODAY...Southeast winds 15 to 20 knots with gusts up to 25 knots, diminishing to around 15 knots this afternoon. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: Southeast 6 feet at 8 seconds. A chance of showers with isolated thunderstorms this morning. .TONIGHT...Southeast winds 10 to 15 knots. Seas 3 to 5 feet. Wave Detail: Southeast 5 feet at 7 seconds. A chance of thunderstorms. A chance of showers. .WEDNESDAY...Southeast winds 10 to 15 knots. Seas 3 to 5 feet. Wave Detail: Southeast 4 feet at 8 seconds. .WEDNESDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to 4 feet. Wave Detail: Southeast 4 feet at 7 seconds. .THURSDAY...Southeast winds 10 to 15 knots. Seas 2 to 4 feet. Wave Detail: Southeast 3 feet at 7 seconds. Showers likely with a chance of thunderstorms. .THURSDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 4 feet. Wave Detail: Southeast 3 feet at 7 seconds. A chance of showers in the evening, then showers likely with a chance of thunderstorms after midnight. .FRIDAY...South winds 10 to 15 knots. Seas 2 to 4 feet. Showers likely with a chance of thunderstorms. .FRIDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to 4 feet. A chance of showers in the evening, then showers likely with a chance of thunderstorms after midnight. .SATURDAY...Southeast winds 10 to 15 knots. Seas 2 to 4 feet. Showers likely with a chance of thunderstorms. .SATURDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to 5 feet. A chance of thunderstorms. A chance of showers in the evening, then showers after midnight. Winds and seas higher in and near thunderstorms. $$ GMZ370-375-200015- Waters from Freeport to Matagorda Ship Channel TX from 20 to 60 NM-Waters from High Island to Freeport TX from 20 to 60 NM- 641 AM CDT Tue May 19 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY MORNING... .TODAY...Southeast winds 15 to 20 knots, diminishing to around 15 knots this afternoon. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: Southeast 6 feet at 8 seconds. A chance of showers with isolated thunderstorms this morning. .TONIGHT...Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas 5 to 6 feet, occasionally to 8 feet. Wave Detail: Southeast 5 feet at 7 seconds. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. .WEDNESDAY...Southeast winds 10 to 15 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: Southeast 5 feet at 8 seconds. .WEDNESDAY NIGHT...Southeast winds 10 to 15 knots. Seas around 4 feet. Wave Detail: Southeast 4 feet at 7 seconds. .THURSDAY...Southeast winds 10 to 15 knots. Seas3 to 4 feet. Wave Detail: Southeast 3 feet at 7 seconds. A chance of thunderstorms. A chance of showers in the morning, then showers likely in the afternoon. .THURSDAY NIGHT...South winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: Southeast 3 feet at 7 seconds. A chance of showers and thunderstorms after midnight. .FRIDAY...South winds 10 to 15 knots. Seas 3 to 4 feet. Showers likely with a chance of thunderstorms. .FRIDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to 4 feet. A chance of showers and thunderstorms after midnight. .SATURDAY...Southeast winds 10 to 15 knots. Seas around 4 feet. Showers likely with a chance of thunderstorms. .SATURDAY NIGHT...Southeast winds 10 to 15 knots. Seas 4 to 5 feet. A chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. Winds and seas higher in and near thunderstorms. $$