National Weather Service Marine Forecast FZUS54 KHGX

FZUS54 KHGX 161734
CWFHGX

Coastal Waters Forecast for Texas
National Weather Service Houston/Galveston TX
1234 PM CDT Tue Jun 16 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.

GMZ300-170630
1234 PM CDT Tue Jun 16 2026

.Synopsis For High Island to the Matagorda Ship Channel Out 60 NM including Galveston and Matagorda Bays.

A disturbance over South Texas is expected to push northeastward into the Gulf. The system may become a tropical storm on Wednesday as it continues northeast along or offshore the Upper Texas Coast. Expect continued bands of showers and thunderstorms through Wednesday, with locally heavier thunderstorms likely. Winds and seas will increase tonight into Wednesday. Gales are likely within heavy bands of showers and thunderstorms. Waterspouts are possible. Gulf seas could peak over 10 feet. Conditions should gradually improve by Wednesday evening into Thursday.

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GMZ335-170630
Galveston Bay
1234 PM CDT Tue Jun 16 2026

TROPICAL STORM WATCH IN EFFECT

THIS AFTERNOON
South winds 5 to 10 knots. Bay waters smooth. A chance of thunderstorms. Showers.

TONIGHT
Southeast winds around 15 knots, increasing to around 30 knots after midnight. Bay waters slightly choppy, increasing to very rough after midnight. A chance of thunderstorms. A chance of showers in the evening, then showers after midnight.

WEDNESDAY
East winds around 30 knots, becoming northeast 20 to 25 knots in the afternoon. Winds could gust over 40 knots in heavy thunderstorms. Bay waters very rough, diminishing to rough in the afternoon. Showers likely with a chance of thunderstorms.

WEDNESDAY NIGHT
Southwest winds 20 to 25 knots with gusts up to 35 knots, becoming south around 20 knots with gusts up to 25 knots after midnight. Bay waters rough, diminishing to choppy after midnight. A chance of showers and thunderstorms.

THURSDAY
South winds 15 to 20 knots with gusts up to 25 knots. Bay waters choppy. A chance of thunderstorms. A chance of showers.

THURSDAY NIGHT
South 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
Southeast winds 10 to 15 knots. Bay waters slightly choppy.

SATURDAY NIGHT
Southeast winds around 15 knots, becoming south 15 to 20 knots after midnight. Bay waters slightly choppy, increasing to choppy after midnight.

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GMZ330-170630
Matagorda Bay
1234 PM CDT Tue Jun 16 2026

SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY MORNING

THIS AFTERNOON
Southeast winds 10 to 15 knots. Bay waters slightly choppy. A chance of thunderstorms. Showers early, then showers likely late.

TONIGHT
East winds 15 to 20 knots with gusts up to 30 knots. Bay waters choppy. Showers likely with a chance of thunderstorms.

WEDNESDAY
North winds 20 to 25 knots, becoming southwest around 20 knots in the afternoon. Bay waters rough, diminishing to choppy in the afternoon. A chance of thunderstorms. Showers likely, mainly in the morning.

WEDNESDAY NIGHT
South winds 15 to 20 knots with gusts up to 25 knots. Bay waters choppy. A chance of thunderstorms in the evening. A chance of showers.

THURSDAY
South winds 15 to 20 knots. Bay waters choppy.

THURSDAY NIGHT
South winds around 15 knots with gusts up to 20 knots. Bay waters slightly choppy.

FRIDAY
Southeast 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 around 15 knots, becoming south 15 to 20 knots after midnight. Bay waters slightly choppy, increasing to choppy after midnight.

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GMZ350-355-170630
Coastal waters from Freeport to Matagorda Ship Channel TX out 20 NM-Coastal waters from High Island to Freeport TX out 20 NM
1234 PM CDT Tue Jun 16 2026

TROPICAL STORM WATCH IN EFFECT

THIS AFTERNOON
South winds 10 to 15 knots. Gusts up to 25 knots late. Seas 3 to 4 feet. Wave Detail: South 4 feet at 6 seconds. Showers likely with a chance of thunderstorms.

TONIGHT
Southeast winds around 20 knots with gusts up to 30 knots, increasing to 20 to 25 knots with gusts up to 40 knots after midnight. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: Southeast 7 feet at 7 seconds. Showers likely with a slight chance of thunderstorms in the evening, then showers with a chance of thunderstorms after midnight.

WEDNESDAY
East winds 20 to 25 knots, becoming northwest in the afternoon. Gusts up to 40 knots, with higher gusts in heavy thunderstorms. Seas 6 to 9 feet, occasionally to 11 feet. Wave Detail: Southeast 7 feet at 7 seconds. A chance of thunderstorms. Showers.

WEDNESDAY NIGHT
South winds 20 to 25 knots with gusts up to 35 knots. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: South 7 feet at 7 seconds. A chance of showers and thunderstorms.

THURSDAY
South winds 20 to 25 knots with gusts up to 30 knots, diminishing to around 20 knots in the afternoon. Seas 5 to 7 feet, occasionally to 9 feet, subsiding to 4 to 5 feet in the afternoon. Wave Detail: South 6 feet at 7 seconds, becoming south 5 feet at 7 seconds. A chance of showers and thunderstorms in the morning.

THURSDAY NIGHT
South winds 15 to 20 knots. Seas 4 to 5 feet. Wave Detail: South 5 feet at 7 seconds.

FRIDAY
Southeast winds 10 to 15 knots. Seas 4 to 5 feet.

FRIDAY NIGHT
Southeast winds 10 to 15 knots. Seas 4 to 5 feet.

SATURDAY
Southeast winds 10 to 15 knots. Seas 3 to 5 feet.

SATURDAY NIGHT
South winds 15 to 20 knots. Seas 3 to 5 feet.

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GMZ370-375-170630
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
1234 PM CDT Tue Jun 16 2026

TROPICAL STORM WATCH IN EFFECT

THIS AFTERNOON
South winds 10 to 15 knots with gusts up to 25 knots. Seas 3 to 5 feet. Wave Detail: South 4 feet at 7 seconds. A chance of thunderstorms. A chance of showers.

TONIGHT
Southeast winds 20 to 25 knots, increasing to around 30 knots after midnight. Seas 4 to 6 feet, occasionally to 8 feet, building to 6 to 9 feet, occasionally to 11 feet after midnight. Wave Detail: Southeast 6 feet at 7 seconds, becoming southeast 8 feet at 7 seconds. A chance of thunderstorms. Showers likely in the evening, then showers after midnight.

WEDNESDAY
South winds 20 to 25 knots, becoming southwest around 30 knots in the afternoon. Seas 7 to 10 feet, occasionally to 13 feet. Wave Detail: Southeast 8 feet at 7 seconds. A chance of thunderstorms. Showers, mainly in the morning.

WEDNESDAY NIGHT
South winds 20 to 25 knots. Gusts up to 40 knots in the evening. Seas 6 to 9 feet, occasionally to 11 feet, subsiding to 6 to 7 feet, occasionally to 9 feet after midnight. Wave Detail: South 7 feet at 8 seconds, becoming south 7 feet at 7 seconds. A chance of showers and thunderstorms.

THURSDAY
South winds 15 to 20 knots with gusts up to 25 knots. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: South 6 feet at 7 seconds. A chance of showers and thunderstorms in the morning.

THURSDAY NIGHT
South winds 15 to 20 knots with gusts up to 25 knots. Seas 5 to 6 feet, occasionally to 8 feet. Wave Detail: South 6 feet at 7 seconds.

FRIDAY
Southeast winds 10 to 15 knots. Seas 5 to 6 feet, occasionally to 8 feet.

FRIDAY NIGHT
Southeast winds 10 to 15 knots. Seas 5 to 6 feet, occasionally to 8 feet.

SATURDAY
Southeast winds 10 to 15 knots. Seas 4 to 5 feet.

SATURDAY NIGHT
Southeast winds around 15 knots, becoming south 15 to 20 knots after midnight. Seas 4 to 5 feet.