Area Forecast Discussion
Issued by NWS Houston/Galveston, TX
Issued by NWS Houston/Galveston, TX
602 FXUS64 KHGX 190404 AFDHGX Area Forecast Discussion National Weather Service Houston/Galveston TX 1104 PM CDT Fri Jul 18 2025 ...New DISCUSSION, MARINE... .KEY MESSAGES... Issued at 1255 PM CDT Fri Jul 18 2025 - Isolated showers and thunderstorms will be possible on Saturday, but then the next decent chance of precipitation doesn`t re- enter the forecast until late next week. - Hot and humid weather is expected through most of next week. && .DISCUSSION... Issued at 1058 PM CDT Fri Jul 18 2025 There were a few showers and thunderstorms that developed near the coast today producing localized spots of near 1" of rain, but otherwise most of the rainfall associated with that disturbance we`ve been monitoring missed us to the east. Some lingering tropical moisture and weakness aloft will continue through Saturday, so some additional scattered afternoon showers and storms will be possible generally east of I-45. High pressure then builds in on Sunday that will persist through at least Wednesday providing us with hot, humid, but mostly rain-free weather. This high pressure does begin to shift to the north by Thursday or Friday with a shortwave sliding westwards along the southern edge of the high. As of right now, this disturbance will be taking a very similar track as the disturbance we tracked this week, skirting along the Gulf coast. This system will be the next decent chance at showers and thunderstorms, likely reaching coastal Texas sometime between Thursday night and Saturday morning. High temperatures through the weekend will be in the low to mid 90s with lows in the mid to upper 70s inland and low to mid 80s at the coast. Temperatures do increase beginning Monday with most of the region getting at least into the mid 90s with some isolated spots into the upper 90s. Afternoon max heat indices will be in the 103- 107 degree range. These conditions will continue until that disturbance approaches from the east at the end of the week. Fowler && .AVIATION... (00Z TAF Issuance) Issued at 548 PM CDT Fri Jul 18 2025 Showers and storms will diminish this evening as light and variable winds set in overnight. Isolated CIGS and patchy fog will be possible during the early morning hours, which may bring some FL reductions, mainly to MVFR levels, though these conditions will likely be short lived. Isolated showers and storms will be possible again Saturday afternoon, though mainly in areas around and northeast of Houston. 03 && .MARINE... Issued at 1058 PM CDT Fri Jul 18 2025 Isolated showers will be possible Saturday morning, but then mostly dry conditions are expected to persist through at least midweek next week as high pressure builds across the region. Expect low seas and light onshore winds to prevail. Fowler && .PRELIMINARY POINT TEMPS/POPS... College Station (CLL) 89 77 94 76 / 20 10 10 0 Houston (IAH) 90 78 94 78 / 40 20 30 0 Galveston (GLS) 92 83 90 83 / 40 10 20 10 && .HGX WATCHES/WARNINGS/ADVISORIES... TX...None. GM...None. && $$ DISCUSSION...Fowler AVIATION...03 MARINE...Fowler