FZUS54 KHGX 190240 CWFHGX Coastal Waters Forecast for Texas National Weather Service Houston/Galveston TX 940 PM CDT Tue Mar 18 2025 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. GMZ300-191515- Synopsis for High Island to the Matagorda Ship Channel out 60 nautical miles including Galveston and Matagorda Bays 940 PM CDT Tue Mar 18 2025 .Synopsis For High Island to the Matagorda Ship Channel Out 60 NM including Galveston and Matagorda Bays. Strong onshore winds, rough bay waters, and building Gulf seas will continue through tonight. Winds should veer southwest and decrease by morning. However, Gulf seas could remain hazardous into Wednesday afternoon. A cold front pushes offshore Wednesday, bringing strong northerly winds and elevated seas in its wake by Wednesday night into Thursday, resulting in another period of strong winds and hazardous seas. Abnormally low tides are also expected Wednesday night. Winds and seas decrease Thursday. However, hazardous marine conditions could linger well into Thursday. Winds veer onshore by Friday. $$ GMZ335-191515- Galveston Bay- 940 PM CDT Tue Mar 18 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM CDT WEDNESDAY... .REST OF TONIGHT...South winds 15 to 20 knots. Bay waters choppy. A slight chance of showers late. .WEDNESDAY...Southwest winds 10 to 15 knots, veering to west in the afternoon. Bay waters slightly choppy. A slight chance of showers in the morning. .WEDNESDAY NIGHT...Northwest winds around 15 knots, becoming north 20 to 25 knots in the late evening and overnight. Bay waters slightly choppy, rising to rough in the late evening and overnight. .THURSDAY...North winds 15 to 20 knots, easing to around 15 knots in the afternoon. Bay waters slightly choppy. .THURSDAY NIGHT...North winds 5 to 10 knots, veering to east after midnight. Bay waters smooth. .FRIDAY...Southeast winds 10 to 15 knots. Bay waters slightly choppy. .FRIDAY NIGHT...South winds 10 to 15 knots, easing to around 10 knots after midnight. Bay waters slightly choppy, easing to smooth after midnight. .SATURDAY...Southeast winds 5 to 10 knots. Bay waters smooth. .SATURDAY NIGHT...Southeast winds 10 to 15 knots. Bay waters slightly choppy. .SUNDAY...South winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers in the afternoon. .SUNDAY NIGHT...South winds 10 to 15 knots, becoming east around 10 knots after midnight. Bay waters slightly choppy, easing to smooth after midnight. A chance of showers. $$ GMZ330-191515- Matagorda Bay- 940 PM CDT Tue Mar 18 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM CDT WEDNESDAY... .REST OF TONIGHT...South winds 15 to 20 knots. Bay waters choppy. .WEDNESDAY...Southwest winds 10 to 15 knots, veering to northwest in the late morning and afternoon. Bay waters slightly choppy. .WEDNESDAY NIGHT...Northwest winds around 15 knots, becoming north 20 to 25 knots. Bay waters slightly choppy, rising to rough. .THURSDAY...North winds 15 to 20 knots, easing to around 15 knots in the late morning and afternoon. Bay waters choppy, easing to slightly choppy in the late morning and afternoon. .THURSDAY NIGHT...East winds around 10 knots, veering to southeast in the late evening and overnight. Bay waters smooth. .FRIDAY...Southeast winds 10 to 15 knots. Bay waters slightly choppy. .FRIDAY NIGHT...South winds 10 to 15 knots, easing to around 10 knots after midnight. Bay waters slightly choppy, easing to smooth after midnight. .SATURDAY...Southeast winds 10 to 15 knots. Bay waters slightly choppy. .SATURDAY NIGHT...Southeast winds 10 to 15 knots. Bay waters slightly choppy. .SUNDAY...South winds 10 to 15 knots. Bay waters slightly choppy. .SUNDAY NIGHT...South winds 10 to 15 knots, becoming east around 10 knots after midnight. Bay waters slightly choppy, easing to smooth after midnight. $$ GMZ355-191515- Coastal waters from High Island to Freeport TX out 20 NM- 940 PM CDT Tue Mar 18 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY MORNING... .REST OF TONIGHT...South winds 15 to 20 knots. Seas 5 to 8 feet, occasionally to 10 feet. Wave Detail: South 7 feet at 7 seconds. A slight chance of showers late. .WEDNESDAY...Southwest winds 10 to 15 knots, veering to west late. Seas 5 to 7 feet, occasionally to 9 feet, subsiding to 4 to 5 feet in the afternoon. Wave Detail: South 6 feet at 8 seconds, becoming south 5 feet at 8 seconds. A slight chance of showers until late afternoon. .WEDNESDAY NIGHT...Northwest winds around 15 knots, becoming north around 30 knots. Seas 3 to 4 feet, building to 4 to 6 feet, occasionally to 8 feet after midnight. Wave Detail: South 4 feet at 7 seconds, becoming northwest 5 feet at 6 seconds. .THURSDAY...North winds 20 to 25 knots, easing to around 15 knots. Seas 4 to 6 feet, occasionally to 8 feet, subsiding to 3 to 4 feet in the afternoon. Wave Detail: Northwest 5 feet at 7 seconds and north 3 feet at 3 seconds, becoming northeast 3 feet at 4 seconds and south 3 feet at 7 seconds. .THURSDAY NIGHT...North winds 5 to 10 knots, veering to east after midnight. Seas around 3 feet in the evening, then around 2 feet or less. Wave Detail: Northeast 2 feet at 4 seconds and south 2 feet at 7 seconds, becoming northeast 2 feet at 4 seconds and south 1 foot at 7 seconds. .FRIDAY...Southeast winds 10 to 15 knots. Seas around 3 feet. Wave Detail: Southeast 3 feet at 4 seconds and south 1 foot at 7 seconds. .FRIDAY NIGHT...South winds 10 to 15 knots. Seas around 3 feet in the evening, then around 2 feet or less. .SATURDAY...Southeast winds 10 to 15 knots. Seas around 2 feet or less, then around 3 feet in the afternoon. .SATURDAY NIGHT...Southeast winds 10 to 15 knots. Seas around 3 feet. .SUNDAY...South winds 10 to 15 knots. Seas around 3 feet. A chance of showers in the afternoon. .SUNDAY NIGHT...South winds 5 to 10 knots. Seas around 3 feet. A chance of showers. $$ GMZ350-191515- Coastal waters from Freeport to Matagorda Ship Channel TX out 20 NM- 940 PM CDT Tue Mar 18 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY MORNING... .REST OF TONIGHT...South winds 15 to 20 knots. Seas 5 to 8 feet, occasionally to 10 feet. Wave Detail: South 7 feet at 7 seconds. .WEDNESDAY...Southwest winds 10 to 15 knots, veering to northwest in the afternoon. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: South 7 feet at 8 seconds. A slight chance of showers in the morning. .WEDNESDAY NIGHT...Northwest winds around 15 knots, becoming north around 30 knots. Seas 3 to 5 feet. Wave Detail: North 4 feet at 3 seconds and south 4 feet at 7 seconds. .THURSDAY...North winds 20 to 25 knots, easing to around 15 knots. Seas 3 to 5 feet. Wave Detail: Northeast 4 feet at 5 seconds and southeast 3 feet at 7 seconds. .THURSDAY NIGHT...East winds 5 to 10 knots, veering to southeast after midnight. Seas around 3 feet in the evening, then around 2 feet or less. Wave Detail: East 2 feet at 6 seconds, becoming southeast 2 feet at 6 seconds. .FRIDAY...Southeast winds 10 to 15 knots. Seas around 3 feet. Wave Detail: Southeast 3 feet at 6 seconds. .FRIDAY NIGHT...South winds 10 to 15 knots. Seas around 3 feet. .SATURDAY...Southeast winds 10 to 15 knots. Seas around 3 feet. .SATURDAY NIGHT...Southeast winds 10 to 15 knots. Seas around 3 feet. .SUNDAY...South winds 10 to 15 knots. Seas around 3 feet. .SUNDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to 4 feet. A chance of showers. $$ GMZ375-191515- Waters from High Island to Freeport TX from 20 to 60 NM- 940 PM CDT Tue Mar 18 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY AFTERNOON... .REST OF TONIGHT...South winds around 20 knots, rising to 20 to 25 knots. Seas 7 to 10 feet, occasionally to 13 feet. Wave Detail: South 8 feet at 7 seconds. .WEDNESDAY...Southwest winds 15 to 20 knots, easing to around 15 knots in the late morning and early afternoon, veering to west late. Seas 6 to 9 feet, occasionally to 11 feet, subsiding to 5 to 7 feet, occasionally to 9 feet in the afternoon. Wave Detail: South 8 feet at 8 seconds, becoming south 6 feet at 8 seconds. A slight chance of showers until late afternoon. .WEDNESDAY NIGHT...Northwest winds around 15 knots, rising to 20 to 25 knots late in the evening, then becoming north around 30 knots after midnight. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: Northwest 7 feet at 7 seconds. .THURSDAY...North winds around 30 knots, easing to around 15 knots. Seas 5 to 8 feet, occasionally to 10 feet, subsiding to 3 to 5 feet in the afternoon. Wave Detail: North 8 feet at 6 seconds, becoming north 5 feet at 6 seconds. .THURSDAY NIGHT...North winds 5 to 10 knots, veering to east after midnight. Seas around 3 feet in the evening, then around 2 feet or less. Wave Detail: North 3 feet at 6 seconds, becoming north 2 feet at 5 seconds and southeast 2 feet at 7 seconds. .FRIDAY...Southeast winds 10 to 15 knots. Seas around 2 feet or less, then around 3 feet in the afternoon. Wave Detail: East 2 feet at 4 seconds and southeast 1 foot at 7 seconds, becoming southeast 3 feet at 5 seconds. .FRIDAY NIGHT...South winds 10 to 15 knots. Seas around 3 feet. .SATURDAY...Southeast winds around 10 knots. Seas around 3 feet. .SATURDAY NIGHT...Southeast winds 10 to 15 knots. Seas around 3 feet. .SUNDAY...South winds 10 to 15 knots. Seas 3 to 4 feet. .SUNDAY NIGHT...South winds 5 to 10 knots. Seas around 4 feet. A chance of showers. $$ GMZ370-191515- Waters from Freeport to Matagorda Ship Channel TX from 20 to 60 NM- 940 PM CDT Tue Mar 18 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY AFTERNOON... .REST OF TONIGHT...South winds 20 to 25 knots. Seas 8 to 10 feet, occasionally to 13 feet. Wave Detail: South 8 feet at 7 seconds. .WEDNESDAY...Southwest winds 15 to 20 knots, becoming west around 10 knots in the late morning and early afternoon, veering to northwest late. Seas 7 to 10 feet, occasionally to 13 feet, subsiding to 5 to 7 feet, occasionally to 9 feet in the afternoon. Wave Detail: South 8 feet at 8 seconds, becoming south 6 feet at 7 seconds. A slight chance of showers until late afternoon. .WEDNESDAY NIGHT...Northwest winds around 15 knots, becoming north around 20 knots late in the evening, rising to around 30 knots after midnight. Seas 4 to 5 feet, building to 5 to 7 feet, occasionally to 9 feet after midnight. Wave Detail: Southeast 5 feet at 7 seconds. .THURSDAY...North winds around 30 knots, easing to around 15 knots. Seas 5 to 8 feet, occasionally to 10 feet, subsiding to 4 to 6 feet, occasionally to 8 feet in the afternoon. Wave Detail: North 6 feet at 6 seconds and southeast 5 feet at 7 seconds, becoming north 5 feet at 6 seconds and southeast 3 feet at 7 seconds. .THURSDAY NIGHT...East winds 5 to 10 knots, becoming around 10 knots after midnight. Seas 3 to 4 feet in the evening, then around 2 feet or less. Wave Detail: Northeast 3 feet at 6 seconds and southeast 2 feet at 7 seconds, becoming northeast 2 feet at 6 seconds and southeast 2 feet at 7 seconds. .FRIDAY...Southeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: Southeast 3 feet at 6 seconds. .FRIDAY NIGHT...South 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 around 15 knots. Seas 3 to 4 feet. .SUNDAY...South winds 10 to 15 knots. Seas around 4 feet. .SUNDAY NIGHT...South winds 10 to 15 knots. Seas around 4 feet. A chance of showers after midnight. $$