FZUS54 KHGX 200741 CWFHGX Coastal Waters Forecast for Texas National Weather Service Houston/Galveston TX 241 AM CDT Wed May 20 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. GMZ300-202015- 241 AM CDT Wed May 20 2026 .Synopsis For High Island to the Matagorda Ship Channel Out 60 NM including Galveston and Matagorda Bays. Showers and thunderstorms are in the process of pushing off the coast. Some 30 to 40 knot gusts are anticipated along the leading band of storms as they pass southward. Winds could be chaotic in terms of speed and direction through mid to late morning Wednesday. We could see somewhat of a lull in speeds late tonight, but quickly increase for 4 to 8 hours Wednesday morning. Otherwise, an unsettled weather pattern will persist into the weekend...with additional rounds of storms likely. Unfortunately, each individual complex will be difficult to time beyond 12 to 24 hours. During breaks in between systems, look for light to moderate onshore winds and 3-5 foot seas. $$ GMZ335-202015- Galveston Bay- 241 AM CDT Wed May 20 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM CDT EARLY THIS MORNING... .TODAY...Southeast winds 10 to 15 knots with gusts up to 30 knots, diminishing to around 10 knots with gusts up to 20 knots this afternoon. Bay waters slightly choppy, diminishing to smooth this afternoon. Showers and thunderstorms early this morning, then a chance of showers and thunderstorms late this morning and afternoon. .TONIGHT...Southeast winds 5 to 10 knots. Bay waters smooth. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. .THURSDAY...Southeast winds around 10 knots, becoming south 10 to 15 knots in the afternoon. Bay waters smooth, increasing to slightly choppy in the afternoon. Showers and thunderstorms likely. .THURSDAY NIGHT...South winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers and thunderstorms. .FRIDAY...South winds 10 to 15 knots. Bay waters slightly choppy. Showers and thunderstorms. .FRIDAY NIGHT...Southeast winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers and thunderstorms in the evening, then showers likely after midnight. .SATURDAY...South winds 10 to 15 knots. Bay waters slightly choppy. Showers likely with a chance of thunderstorms in the morning, then showers with thunderstorms likely in the afternoon. .SATURDAY NIGHT...Southeast winds 10 to 15 knots. Bay waters slightly choppy. A chance of thunderstorms. Showers. .SUNDAY...South winds 10 to 15 knots. Bay waters slightly choppy. A chance of thunderstorms. Showers. .SUNDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters smooth. A chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. Winds and waves higher in and near thunderstorms. $$ GMZ330-202015- Matagorda Bay- 241 AM CDT Wed May 20 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 AM CDT THIS MORNING... .TODAY...East winds 20 to 25 knots with gusts up to 40 knots, becoming southeast with gusts up to 35 knots late this morning, then diminishing to around 15 knots with gusts up to 25 knots this afternoon. Bay waters rough, diminishing to slightly choppy this afternoon. Showers and thunderstorms early this morning, then a chance of showers and thunderstorms late this morning and early afternoon. .TONIGHT...Southeast winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. .THURSDAY...Southeast winds 10 to 15 knots. Bay waters slightly choppy. Showers and thunderstorms. .THURSDAY NIGHT...Southeast winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers and thunderstorms after midnight. .FRIDAY...South winds 10 to 15 knots. Bay waters slightly choppy. Showers and thunderstorms likely, mainly in the morning. .FRIDAY NIGHT...Southeast winds 10 to 15 knots. Bay waters slightly choppy. A chance of thunderstorms in the evening. A chance of showers. .SATURDAY...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. .SATURDAY NIGHT...Southeast winds 10 to 15 knots. Bay waters slightly choppy. A chance of thunderstorms. Showers. .SUNDAY...South winds 5 to 10 knots. Bay waters smooth. Showers in the morning, then showers likely with a chance of thunderstorms in the afternoon. .SUNDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters smooth. A chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. Winds and waves higher in and near thunderstorms. $$ GMZ350-355-202015- Coastal waters from Freeport to Matagorda Ship Channel TX out 20 NM-Coastal waters from High Island to Freeport TX out 20 NM- 241 AM CDT Wed May 20 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 AM CDT THIS MORNING... .TODAY...East winds 20 to 25 knots with gusts up to 40 knots, diminishing to around 10 knots. Seas 5 to 7 feet, occasionally to 9 feet, subsiding to 3 to 5 feet this afternoon. Wave Detail: Southeast 6 feet at 7 seconds, becoming southeast 5 feet at 7 seconds. Showers and thunderstorms early this morning, then a chance of showers and thunderstorms late this morning and early afternoon. .TONIGHT...Southeast winds 10 to 15 knots. Seas 2 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. .THURSDAY...Southeast winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 7 seconds. Showers and thunderstorms likely. .THURSDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 6 seconds. Showers and thunderstorms likely after midnight. .FRIDAY...South winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 6 seconds. Showers and thunderstorms likely, mainly in the morning. .FRIDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 6 seconds. A chance of thunderstorms in the evening. A chance of showers. .SATURDAY...Southeast winds 10 to 15 knots. Seas 2 to 3 feet. Showers likely with a chance of thunderstorms in the morning, then showers with thunderstorms likely in the afternoon. .SATURDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to 3 feet. A chance of thunderstorms. Showers. .SUNDAY...South winds 10 to 15 knots, diminishing to around 10 knots in the afternoon. Seas 3 to 4 feet. Showers in the morning, then showers likely with a chance of thunderstorms in the afternoon. .SUNDAY NIGHT...Southeast winds 5 to 10 knots. Seas around 3 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. $$ GMZ370-375-202015- 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- 241 AM CDT Wed May 20 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 AM CDT THIS MORNING... .TODAY...East winds 20 to 25 knots with gusts up to 35 knots, diminishing to around 10 knots. Seas 6 to 7 feet, occasionally to 9 feet, subsiding to 3 to 5 feet this afternoon. Wave Detail: Southeast 6 feet at 8 seconds,becoming southeast 5 feet at 7 seconds. A chance of showers and thunderstorms until late afternoon. .TONIGHT...Southeast winds around 10 knots. 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. .THURSDAY...Southeast winds 10 to 15 knots. Seas around 3 feet. Wave Detail: Southeast 3 feet at 7 seconds. Showers and thunderstorms likely. .THURSDAY NIGHT...South winds 10 to 15 knots. Seas around 3 feet. Wave Detail: Southeast 3 feet at 6 seconds. A chance of showers and thunderstorms after midnight. .FRIDAY...South winds 10 to 15 knots. Seas around 3 feet. Wave Detail: Southeast 2 feet at 6 seconds. Showers and thunderstorms likely, mainly in the morning. .FRIDAY NIGHT...Southeast winds 10 to 15 knots. Seas around 3 feet. Wave Detail: Southeast 3 feet at 6 seconds. A chance of thunderstorms in the evening. A chance of showers. .SATURDAY...Southeast winds 10 to 15 knots. Seas 3 to 4 feet. Showers likely with a chance of thunderstorms. .SATURDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to 4 feet. A chance of thunderstorms. Showers. .SUNDAY...South winds 10 to 15 knots. Seas 3 to 5 feet. A chance of thunderstorms. Showers. .SUNDAY NIGHT...Southeast winds 5 to 10 knots. Seas 3 to 4 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. $$