FZUS54 KHGX 210028 CWFHGX Coastal Waters Forecast for Texas National Weather Service Houston/Galveston TX 728 PM CDT Mon Apr 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. GMZ300-211315- 728 PM CDT Mon Apr 20 2026 .Synopsis For High Island to the Matagorda Ship Channel Out 60 NM including Galveston and Matagorda Bays. Moderate northeasterly winds and elevated seas will continue into the overnight hours. Wind speeds remain elevated but will transition to southeasterly later tonight. An extended fetch of moderate southeasterly winds around midweek will likely lead to another round of increased seas, especially in the offshore Gulf waters. Scattered light rain is expected on Monday, but chances for storms return Tuesday into Wednesday. Water levels are expected to remain near 3.0 feet above Mean Lower Low Water during high tide cycles through at least midweek. $$ GMZ335-211315- Galveston Bay- 728 PM CDT Mon Apr 20 2026 ...SMALL CRAFT SHOULD EXERCISE CAUTION IN EFFECT UNTIL 1 AM CDT TUESDAY... .TONIGHT...Southeast winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers until early morning, then a chance of showers with a slight chance of thunderstorms late. .TUESDAY...East winds 10 to 15 knots with gusts up to 20 knots. Bay waters slightly choppy. Showers likely with a slight chance of thunderstorms in the morning, then showers likely with a chance of thunderstorms in the afternoon. .TUESDAY NIGHT...Southeast winds 10 to 15 knots. Bay waters slightly choppy. A chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. .WEDNESDAY...Southeast winds 10 to 15 knots. Bay waters slightly choppy. Showers. A chance of thunderstorms in the morning, then thunderstorms likely in the afternoon. .WEDNESDAY NIGHT...Southeast winds 10 to 15 knots. Bay waters slightly choppy. .THURSDAY...Southeast winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers in the morning. .THURSDAY NIGHT...Southeast winds 15 to 20 knots. Bay waters choppy. .FRIDAY...South winds 10 to 15 knots. Bay waters slightly choppy. .FRIDAY NIGHT...South winds 10 to 15 knots. Bay waters slightly choppy. .SATURDAY...South winds 10 to 15 knots. Bay waters slightly choppy. .SATURDAY NIGHT...South winds 10 to 15 knots. Bay waters slightly choppy. Winds and waves higher in and near thunderstorms. $$ GMZ330-211315- Matagorda Bay- 728 PM CDT Mon Apr 20 2026 ...SMALL CRAFT SHOULD EXERCISE CAUTION IN EFFECT UNTIL 1 AM CDT TUESDAY... .TONIGHT...East winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of thunderstorms this evening. A chance of showers. A chance of thunderstorms after midnight. .TUESDAY...East winds 10 to 15 knots with gusts up to 20 knots. Bay waters slightly choppy. A chance of showers and thunderstorms. .TUESDAY NIGHT...Southeast winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers and thunderstorms. .WEDNESDAY...Southeast winds 10 to 15 knots. Bay waters slightly choppy. A chance of thunderstorms. Showers likely. .WEDNESDAY NIGHT...Southeast winds 10 to 15 knots. Bay waters slightly choppy. .THURSDAY...Southeast winds 10 to 15 knots. Bay waters slightly choppy. .THURSDAY NIGHT...Southeast winds 10 to 15 knots with gusts up to 20 knots. Bay waters slightly choppy. .FRIDAY...South winds 10 to 15 knots. Bay waters slightly choppy. .FRIDAY NIGHT...Southeast winds 10 to 15 knots. Bay waters slightly choppy. .SATURDAY...Southeast winds 10 to 15 knots. Bay waters slightly choppy. .SATURDAY NIGHT...Southeast winds 10 to 15 knots. Bay waters slightly choppy. Winds and waves higher in and near thunderstorms. $$ GMZ350-355-211315- Coastal waters from Freeport to Matagorda Ship Channel TX out 20 NM-Coastal waters from High Island to Freeport TX out 20 NM- 728 PM CDT Mon Apr 20 2026 ...SMALL CRAFT SHOULD EXERCISE CAUTION IN EFFECT UNTIL 1 AM CDT TUESDAY... .TONIGHT...East winds around 15 knots with gusts up to 20 knots. Seas 3 to 4 feet. Wave Detail: East 4 feet at 6 seconds. A chance of showers with a slight chance of thunderstorms. .TUESDAY...East winds around 15 knots with gusts up to 20 knots. Seas 3 to 4 feet. Wave Detail: East 4 feet at 6 seconds. A chance of showers. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. .TUESDAY NIGHT...Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas 3 to 4 feet. Wave Detail: Southeast 4 feet at 6 seconds. A chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. .WEDNESDAY...Southeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: Southeast 3 feet at 7 seconds. A chance of thunderstorms. Showers. .WEDNESDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: Southeast 4 feet at 7 seconds. .THURSDAY...Southeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: Southeast 4 feet at 7 seconds. .THURSDAY NIGHT...Southeast winds 15 to 20 knots. Seas 3 to 5 feet. .FRIDAY...South winds 10 to 15 knots. Seas 3 to 5 feet. .FRIDAY NIGHT...South winds 10 to 15 knots. Seas 3 to 4 feet. .SATURDAY...Southeast winds 10 to 15 knots. Seas 2 to 4 feet. .SATURDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to 3 feet in the evening. Winds and seas higher in and near thunderstorms. $$ GMZ370-375-211315- 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- 728 PM CDT Mon Apr 20 2026 ...SMALL CRAFT SHOULD EXERCISE CAUTION IN EFFECT UNTIL 1 AM CDT TUESDAY... .TONIGHT...East winds around 15 knots with gusts up to 20 knots. Seas 4 to 5 feet. Wave Detail: East 5 feet at 6 seconds. A chance of showers early this evening, then a slight chance of showers late this evening and early morning. A chance of showers with a slight chance of thunderstorms late. .TUESDAY...East winds around 15 knots with gusts up to 20 knots. Seas 4 to 5 feet. Wave Detail: East 4 feet at 7 seconds. A chance of showers. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. .TUESDAY NIGHT...Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas around 4 feet. Wave Detail: East 4 feet at 7 seconds. A chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. .WEDNESDAY...Southeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: Southeast 4 feet at 7 seconds. A chance of thunderstorms. Showers. .WEDNESDAY NIGHT...Southeast winds 10 to 15 knots. Seas around 4 feet. Wave Detail: East 4 feet at 7 seconds. .THURSDAY...Southeast winds 10 to 15 knots. Seas 4 to 5 feet. Wave Detail: Southeast 4 feet at 8 seconds. .THURSDAY NIGHT...Southeast winds 15 to 20 knots. Seas 4 to 5 feet. .FRIDAY...South winds 10 to 15 knots. Seas 4 to 5 feet. .FRIDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to 4 feet. .SATURDAY...Southeast winds 10 to 15 knots. Seas 3 to 4 feet. .SATURDAY NIGHT...Southeast winds 10 to 15 knots. Seas around 3 feet in the evening. Winds and seas higher in and near thunderstorms. $$