FZUS54 KHGX 191815 CWFHGX Coastal Waters Forecast for Texas National Weather Service Houston/Galveston TX 115 PM 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. GMZ300-200715- 115 PM CDT Tue May 19 2026 .Synopsis For High Island to the Matagorda Ship Channel Out 60 NM including Galveston and Matagorda Bays. Winds and seas should somewhat lower compared to recent days. Showers and thunderstorms are expected late this evening 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 and into Memorial Day weekend. Winds should generally remain light to moderate from the southeast. Stronger gusts possible in the vicinity of thunderstorms. $$ GMZ335-200715- Galveston Bay- 115 PM CDT Tue May 19 2026 .THIS AFTERNOON...Southeast winds around 15 knots with gusts up to 20 knots. Bay waters slightly choppy. A chance of showers with a slight chance of thunderstorms. .TONIGHT...Southeast winds 10 to 15 knots. Bay waters slightly choppy. Showers and thunderstorms likely. .WEDNESDAY...East winds 10 to 15 knots. Bay waters slightly choppy. A chance of thunderstorms. Showers likely, mainly in the morning. .WEDNESDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters smooth. .THURSDAY...Southeast winds around 10 knots, becoming south 10 to 15 knots in the afternoon. Bay waters smooth, increasing to slightly choppy in the afternoon. A chance of thunderstorms. Showers. .THURSDAY NIGHT...South winds 10 to 15 knots. Bay waters slightly choppy. A chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. .FRIDAY...South winds 10 to 15 knots. Bay waters slightly choppy. Showers likely with a chance of thunderstorms in the morning, then showers with thunderstorms likely in the afternoon. .FRIDAY NIGHT...South winds 10 to 15 knots, diminishing to around 10 knots after midnight. Bay waters slightly choppy, diminishing to smooth after midnight. A chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. .SATURDAY...Southeast winds 5 to 10 knots. Bay waters smooth. Showers likely with a chance of thunderstorms. .SATURDAY NIGHT...Southeast winds around 10 knots. Bay waters smooth to slightly choppy. A chance of thunderstorms. A chance of showers in the evening, then showers after midnight. Winds and waves higher in and near thunderstorms. $$ GMZ330-200715- Matagorda Bay- 115 PM CDT Tue May 19 2026 .THIS AFTERNOON...Southeast winds around 15 knots with gusts up to 20 knots. Bay waters slightly choppy. A slight chance of showers and thunderstorms. .TONIGHT...Southeast winds around 15 knots, becoming east 15 to 20 knots after midnight. Bay waters slightly choppy, increasing to choppy after midnight. A chance of showers and thunderstorms in the evening, becoming 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 to 15 knots. Bay waters slightly choppy. .THURSDAY...Southeast winds around 10 knots, becoming south 10 to 15 knots with gusts up to 20 knots in the afternoon. Bay waters smooth, increasing to slightly choppy in the afternoon. A chance of thunderstorms. Showers. .THURSDAY NIGHT...South winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers in the evening, then showers likely with a chance of thunderstorms after midnight. .FRIDAY...South winds 10 to 15 knots. Bay waters slightly choppy. A chance of thunderstorms. Showers likely, mainly in the morning. .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. $$ GMZ350-355-200715- Coastal waters from Freeport to Matagorda Ship Channel TX out 20 NM-Coastal waters from High Island to Freeport TX out 20 NM- 115 PM CDT Tue May 19 2026 .THIS AFTERNOON...Southeast winds around 15 knots. Seas 4 to 6 feet, occasionally to 7 feet. Wave Detail: Southeast 5 feet at 8 seconds. A slight chance of showers early, then a chance of showers with a slight chance of thunderstorms late. .TONIGHT...Southeast winds around 15 knots, increasing to 15 to 20 knots after midnight. Seas 3 to 5 feet. Wave Detail: Southeast 5 feet at 7 seconds. A chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. .WEDNESDAY...East winds 15 to 20 knots, diminishing to around 10 knots in the afternoon. Seas 3 to 5 feet. Wave Detail: Southeast 4 feet at 8 seconds. A chance of showers and thunderstorms in the morning. .WEDNESDAY NIGHT...Southeast winds around 10 knots. Seas 2 to 4 feet. Wave Detail: Southeast 4 feet at 7 seconds. .THURSDAY...Southeast winds 10 to 15 knots. Seas 2 to 4 feet. Wave Detail: Southeast 3 feet at 7 seconds. A chance of thunderstorms. Showers likely. .THURSDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 4 feet. Wave Detail: Southeast 3 feet at 7 seconds. A chance of showers in the evening, then showers likely with a chance of thunderstorms after midnight. .FRIDAY...South winds 10 to 15 knots. Seas 2 to 4 feet. Showers likely with a chance of thunderstorms. .FRIDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to 4 feet. A chance of showers in the evening, then showers likely with a chance of thunderstorms after midnight. .SATURDAY...Southeast winds 10 to 15 knots. Seas 2 to 4 feet. Showers likely with a chance of thunderstorms. .SATURDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to 5 feet. A chance of thunderstorms. A chance of showers in the evening, then showers after midnight. Winds and seas higher in and near thunderstorms. $$ GMZ370-375-200715- 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- 115 PM CDT Tue May 19 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING... .THIS AFTERNOON...Southeast winds around 15 knots with gusts up to 20 knots. Seas 5 to 6 feet, occasionally to 8 feet. Wave Detail: Southeast 5 feet at 8 seconds. A slight chance of showers. .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...East winds 15 to 20 knots, diminishing to around 10 knots in the afternoon. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: Southeast 5 feet at 8 seconds. A chance of showers in the morning. .WEDNESDAY NIGHT...Southeast winds around 10 knots. Seas around 4 feet. Wave Detail: Southeast 4 feet at 7 seconds. .THURSDAY...Southeast winds 10 to 15 knots. Seas 3 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. A chance of thunderstorms. A chance of showers in the morning, then showers likely in the afternoon. .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. $$