429 FXUS64 KHGX 111123 AFDHGXArea Forecast Discussion National Weather Service Houston/Galveston TX 623 AM CDT Thu Sep 11 2025
...New AVIATION...
.KEY MESSAGES... Issued at 1207 AM CDT Thu Sep 11 2025
- Summer-like temperatures return through the weekend with high temperatures mainly in the mid-90s with isolated readings reaching the upper 90s.
- Isolated to scattered showers and storms are possible near the coast through Thursday night.
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.DISCUSSION... Issued at 1207 AM CDT Thu Sep 11 2025
An upper level ridge will remain dominate over Texas through the weekend helping to bring a return to hotter, more humid, conditions. Widespread high temperatures in the low to mid 90s are expected with isolated spots climbing into the upper 90s through the weekend thanks to increased heights and abundant sunshine. The ridge begins to break down at the start of next week leading to daytime temperatures dropping back down a few degrees. Persistent easterly flow will bring increased moisture to the region (PWATs up to around 1.6-1.8", and dew points back into the upper 60s to low 70s) leading to afternoon peak heat indices to near 100 degrees. Overnight lows will generally stay in the low to mid 70s for much of the region with temperatures not dropping below 80 degrees at the coast.
Despite the high pressure building into the region, there will be a chance of isolated coastal showers Thursday morning/early afternoon thanks to increasing PWATs. The majority of the activity will remain over the coastal waters, but some isolated showers could move inland at times. The best chances over land will be down near Matagorda Bay (such as Jackson, Matagorda, and Walker counties), but there will be at least a slight chance of an isolated shower up the SE Texas coast. Those located north of I-10 will likely see no rainfall on Thursday (and likely through the remainder of the forecast period). As the high pressure moves closer to SE Texas by Friday and remaining overhead over the weekend, the chance for precipitation will be minimal with just an isolated nocturnal shower possible over the Gulf waters. As the high pressure begins to break down at the start of next week, chances of at least isolated coastal showers begins to increase.
Fowler
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.AVIATION... (12Z TAF Issuance) Issued at 504 AM CDT Thu Sep 11 2025
Isolated patchy fog early this morning should burn off shortly after sunrise. VFR conditions prevailing today with light northeast winds shifting east to southeast this afternoon. Early Friday morning may see more isolated patchy fog in the usual fog- prone locations (KCXO/KLBX) with brief periods of MVFR to IFR FLs possible leading up to sunrise.
03
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.MARINE... Issued at 1207 AM CDT Thu Sep 11 2025
Light to occasionally moderate easterly flow (sustained 10-15kt, gusts to 20kt) will persist through Friday. Small craft may need to exercise caution Thursday afternoon into Friday morning for the Gulf waters where the occasional higher gusts may become more frequent. Winds are expected to become more southeasterly over the weekend. Seas will be around 2-4ft through the rest of the week, lowering to 1-3 feet by the start of next week.
Scattered showers and isolated thunderstorms will begin to pop up over the coastal waters early Thursday morning and continue to be possible through through Thursday night. Friday through the weekend will be mostly rain-free, but then chance of scattered showers and isolated storms return Monday and continue through midweek. Additional isolated showers will be possible through nightly through the remainder of the week.
The persistent easterly winds will lead to higher than normal high tides through the remainder of the week, peaking at around 3.0-3.3ft above MLLW at times of high tide.
Fowler
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.PRELIMINARY POINT TEMPS/POPS... College Station (CLL) 70 95 69 95 / 0 0 0 0 Houston (IAH) 74 95 73 95 / 0 0 0 0 Galveston (GLS) 81 89 80 89 / 0 0 0 10
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.HGX WATCHES/WARNINGS/ADVISORIES... TX...None. GM...None. &&
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DISCUSSION...Fowler AVIATION...03 MARINE...Fowler
NWS HGX Office Area Forecast Discussion