Coastal Waters Forecast
Issued by NWS Houston/Galveston, TX
Issued by NWS Houston/Galveston, TX
992 FZUS54 KHGX 091928 CWFHGX Coastal Waters Forecast for Texas National Weather Service Houston/Galveston TX 128 PM CST Sun Nov 9 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. GMZ300-100830- 128 PM CST Sun Nov 9 2025 .Synopsis For High Island to the Matagorda Ship Channel Out 60 NM including Galveston and Matagorda Bays. Strong northerly winds and building seas continue in the wake of this morning`s cold front. Small Craft Advisory conditions are expected on the bays through late tonight. Gale conditions have developed on the Gulf and a Gale Warning remains in effect through late tonight.The strong north winds will also generate low water conditions late Sunday and Monday on both Galveston Bay and Matagorda Bay, with more severe low water conditions anticipated on Galveston Bay, where a low water advisory has been issued. These conditions are expected to be an issue at low tide on Sunday, but also in upper portions of the bay and the Houston Ship Channel through Monday`s low tide cycle as well. Strong northerly winds may persist through the morning hours on Monday, in which case the Small Craft Advisory may be extended. $$ GMZ335-100830- Galveston Bay- 128 PM CST Sun Nov 9 2025 ...LOW WATER ADVISORY IN EFFECT UNTIL MIDNIGHT CST MONDAY NIGHT... ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .THIS AFTERNOON...North winds 20 to 25 knots with gusts up to 30 knots. Bay waters rough. .TONIGHT...North winds 20 to 25 knots with gusts up to 30 knots. Bay waters rough. .MONDAY...North winds 15 to 20 knots, diminishing to around 15 knots in the afternoon. Bay waters choppy, diminishing to slightly choppy in the afternoon. .MONDAY NIGHT...North winds 10 to 15 knots, becoming east around 10 knots after midnight. Bay waters slightly choppy, diminishing to smooth after midnight. .TUESDAY...Southeast winds around 10 knots, becoming south 10 to 15 knots with gusts up to 20 knots in the afternoon. Bay waters smooth, increasing to slightly choppy in the afternoon. .TUESDAY NIGHT...South winds 10 to 15 knots with gusts up to 20 knots. Bay waters slightly choppy. .WEDNESDAY...South winds 10 to 15 knots. Bay waters slightly choppy. .WEDNESDAY NIGHT...South winds around 10 knots. Bay waters smooth to slightly choppy. .THURSDAY...South winds around 10 knots. Bay waters smooth to slightly choppy. .THURSDAY NIGHT...South winds 10 to 15 knots. Bay waters slightly choppy. $$ GMZ330-100830- Matagorda Bay- 128 PM CST Sun Nov 9 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .THIS AFTERNOON...North winds around 25 knots with gusts up to 35 knots. Bay waters rough. .TONIGHT...North winds around 30 knots, diminishing to 20 to 25 knots after midnight. Bay waters very rough, diminishing to rough after midnight. .MONDAY...North winds 20 to 25 knots with gusts up to 30 knots, diminishing to around 20 knots in the afternoon. Bay waters rough, diminishing to choppy in the afternoon. .MONDAY NIGHT...Northeast winds 10 to 15 knots. Bay waters slightly choppy. .TUESDAY...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. .TUESDAY NIGHT...South winds 15 to 20 knots with gusts up to 25 knots. Bay waters choppy. .WEDNESDAY...South winds 10 to 15 knots. Bay waters slightly choppy. .WEDNESDAY NIGHT...South winds 10 to 15 knots. Bay waters slightly choppy. .THURSDAY...South winds 10 to 15 knots. Bay waters slightly choppy. .THURSDAY NIGHT...South winds 10 to 15 knots. Bay waters slightly choppy. $$ GMZ350-355-100830- Coastal waters from Freeport to Matagorda Ship Channel TX out 20 NM-Coastal waters from High Island to Freeport TX out 20 NM- 128 PM CST Sun Nov 9 2025 ...GALE WARNING IN EFFECT THROUGH LATE TONIGHT... .THIS AFTERNOON...North winds around 30 knots, diminishing to 20 to 25 knots late. Seas 5 to 8 feet, occasionally to 10 feet. Wave Detail: Northeast 5 feet at 5 seconds. .TONIGHT...North winds around 30 knots with gusts up to 40 knots. Seas 6 to 9 feet, occasionally to 11 feet. Wave Detail: Northeast 6 feet at 5 seconds. .MONDAY...North winds 20 to 25 knots, diminishing to around 20 knots in the afternoon. Seas 5 to 8 feet, occasionally to 10 feet, subsiding to 4 to 6 feet, occasionally to 8 feet in the afternoon. Wave Detail: Northeast 6 feet at 6 seconds. .MONDAY NIGHT...North winds 10 to 15 knots with gusts up to 20 knots, becoming northeast after midnight. Seas 3 to 5 feet. Wave Detail: Northeast 3 feet at 4 seconds. .TUESDAY...Southeast winds around 10 knots, becoming south 10 to 15 knots with gusts up to 20 knots in the afternoon. Seas 2 to 4 feet. Wave Detail: East 2 feet at 6 seconds. .TUESDAY NIGHT...South winds 15 to 20 knots with gusts up to 25 knots. Seas 2 to 4 feet. Wave Detail: South 4 feet at 5 seconds and northeast 1 foot at 5 seconds. .WEDNESDAY...South winds 15 to 20 knots, diminishing to around 15 knots in the afternoon. Seas 3 to 4 feet. .WEDNESDAY NIGHT...South winds 10 to 15 knots. Seas 3 to 4 feet. .THURSDAY...South winds 10 to 15 knots. Seas 2 to 3 feet. .THURSDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 4 feet. $$ GMZ370-375-100830- 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- 128 PM CST Sun Nov 9 2025 ...GALE WARNING IN EFFECT THROUGH LATE TONIGHT... .THIS AFTERNOON...North winds around 30 knots. Seas 8 to 10 feet, occasionally to 13 feet. Wave Detail: North 8 feet at 6 seconds. .TONIGHT...North winds around 30 knots with gusts up to 40 knots. Seas 9 to 12 feet, occasionally to 15 feet. Wave Detail: North 7 feet at 5 seconds. .MONDAY...North winds around 30 knots, diminishing to around 20 knots in the afternoon. Seas 8 to 11 feet, occasionally to 14 feet, subsiding to 6 to 9 feet, occasionally to 11 feet in the afternoon. Wave Detail: Northeast 9 feet at 7 seconds, becoming northeast 7 feet at 7 seconds. .MONDAY NIGHT...North winds 15 to 20 knots, becoming east around 15 knots after midnight. Seas 5 to 7 feet, occasionally to 9 feet, subsiding to 4 to 5 feet after midnight. Wave Detail: Northeast 5 feet at 6 seconds, becoming northeast 4 feet at 6 seconds. .TUESDAY...Southeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: Northeast 3 feet at 6 seconds. .TUESDAY NIGHT...South winds 15 to 20 knots with gusts up to 25 knots. Seas 2 to 4 feet, building to 4 to 5 feet after midnight. Wave Detail: South 4 feet at 4 seconds and northeast 2 feet at 5 seconds, becoming south 5 feet at 5 seconds and northeast 1 foot at 5 seconds. .WEDNESDAY...South winds 15 to 20 knots, diminishing to around 15 knots in the afternoon. Seas 3 to 5 feet. .WEDNESDAY NIGHT...South winds 10 to 15 knots. Seas 3 to 4 feet. .THURSDAY...Southeast winds 10 to 15 knots. Seas 3 to 4 feet. .THURSDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to 4 feet. $$