High Island to Freeport, TX 20 - 60 NM Marine Forecast
| Today...Southeast Winds 5 To 10 Knots. Seas 2 To 3 Feet. Wave Detail: Southeast 3 Feet At 6 Seconds. A Slight Chance Of Showers And Thunderstorms Early This Afternoon. |
| Tonight...Southeast Winds 10 To 15 Knots, Diminishing To Around 10 Knots After Midnight. Seas 2 To 3 Feet. Wave Detail: South 2 Feet At 5 Seconds. |
| Wednesday...East Winds 10 To 15 Knots. Seas 2 To 3 Feet. Wave Detail: Southeast 2 Feet At 5 Seconds. |
| Wednesday Night...East Winds 10 To 15 Knots With Gusts Up To 20 Knots. Seas 3 To 4 Feet. Wave Detail: East 3 Feet At 5 Seconds. A Chance Of Showers And Thunderstorms After Midnight. |
| Thursday...East Winds 15 To 20 Knots. Seas 4 To 6 Feet, Occasionally To 8 Feet. Thunderstorms Likely. Showers Likely. |
| Thursday Night...East Winds 15 To 20 Knots. Seas 4 To 6 Feet, Occasionally To 8 Feet. |
| Friday...East Winds Around 15 Knots. Seas 4 To 5 Feet. |
| Friday Night...East Winds 10 To 15 Knots. Seas 3 To 4 Feet. |
| Saturday...East Winds 5 To 10 Knots. Seas 2 To 3 Feet. |
| Saturday Night...Southeast Winds 5 To 10 Knots. Seas 2 To 3 Feet. Winds And Seas Higher In And Near Thunderstorms. |
| Area Forecast Discussion National Weather Service Houston/Galveston TX 624am CDT Tuesday September 15 2026 Issued at 1113pm CDT Monday September 14 2026 A broad upper low continues to spin over the Tennessee Valley bringing generally persistent weather to our area, with hot and humid conditions continuing through the week. A Heat Advisory remains in effect through early Tuesday evening. Heat indices up to 109F are possible during the daytime hours. Additional diurnal convection looks to develop during Tuesday morning and will track eastwards through the afternoon. Storms again will be isolated and look to be confined to the coast. Any storms late-morning should mostly stay south of the I-10 corridor, tapering off through the afternoon. After a quiet night, Wednesday will see similar conditions overall, however the timing of more widespread convection along the coast looks to return to the afternoon time frame with a few stray storms potentially moving into northern portions of the forecast area. In any case, these will not amount to much. The aforementioned upper ridge will continue to shift eastward into Thursday. A surge of tropical moisture will accompany this with GFS (Global Forecast System) PWATs (Precipitable Waters) in particular approaching an impressive 2.5". The latter would bring more favorable precipitation/convective parameters, however the former will make the cap much stronger and would inhibit storm development. The best precipitation chances will occur in the morning along the coast before the greatest capping develops during the afternoon/early evening hours and the aforementioned moisture surge moves west of our area. The ridge will become elongated from north to south over central Texas Friday into the weekend and become squeezed between a trough to the west and a closed low to the east. This should all yield minimal PoPs, although the heat and humidity will continue. Marine Issued at 1113pm CDT Monday September 14 2026 Light SE onshore winds will continue in the near-term, peaking near 15 kts later tonight. Winds will back to a more due easterly direction on Wednesday and increase to 20 kts from east to west on Thursday, before slightly diminishing on Friday. Seas of 2 to 3 feet will persist through Wednesday, increasing to 4 to 6 feet on Thursday due to the aforementioned wind increase. These will subside into the weekend. NOAA Houston/Galveston TX Office: Watches - Warnings - Advisories TX... Heat Advisory until 7pm CDT this evening for TXZ163-164-176>179- 195>200-210>213-226-227-235>238-313-335-338. GM...None. |
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