Area Forecast Discussion
Issued by NWS Houston/Galveston, TX
Issued by NWS Houston/Galveston, TX
920 FXUS64 KHGX 312338 AFDHGX Area Forecast Discussion National Weather Service Houston/Galveston TX 638 PM CDT Fri Oct 31 2025 ...New AVIATION... .KEY MESSAGES... - Scattered showers and isolated thunderstorms Saturday. Let`s keep an eye on locations closer to the coast during the afternoon where an isolated stronger storm or two could emerge. - Drier air filters back into the region after Saturday`s frontal passage. It should persist for a decent part of next week. - Other than Saturday when we`ll see higher RH`s and a lessor fire risk, fire weather concerns remain about status quo going into early-mid next week with the return of drier air. && .DISCUSSION... Issued at 134 PM CDT Fri Oct 31 2025 Lee side shortwave will dig southward thru the Plains tonight and into scntl Tx Saturday. Look for some scattered showers and isolated tstm development across portions of the region with an accompanying frontal boundary sagging into the area. Overall instability isn`t all that impressive, but there is some concern we might see an embedded stronger storm or two emerge later in the afternoon/evening when the better forcing encounters slightly higher moisture availability closer to the coast and offshore. Front and associated rain chances will track sewd and offshore in the mid evening hours followed by drier air filtering into the region in its wake Sat night & Sunday. It`s looking a mostly dry/pleasant work week will be on tap as mid-upper ridging builds into Tx behind the departing trough. The ridge should begin flattening Thurs-Fri as the next trough makes its way ewd across the central US. Though low level onshore winds will be in place by then, PW`s still look a bit too low for mentionable POPs attm. 47 && .AVIATION... (00Z TAF Issuance) Issued at 615 PM CDT Fri Oct 31 2025 VFR conditions with light VRB winds are expected through the overnight period. Iso-Sct showers and Iso thunderstorms can be expected, from late Saturday morning through Saturday evening, as a cold front pushes across Southeast TX. Inland areas should be rain free around midnight. Winds will be E at around 04-06 KT Saturday morning, then ENE at 05-10 KT during the afternoon, and NNE in the evening. Gusts of 15-20 KT are possible at times inland and 20-25 KT along the immediate coasts (GLS/LBX). Cotto && .MARINE... Issued at 134 PM CDT Fri Oct 31 2025 Winds will gradually veer around to the southeast this afternoon as high pressure moves away from the region. A front is expected to sag into the waters on Saturday bringing some scattered showers and thunderstorms (wouldn`t doubt if we see a few stronger cells...with better chances in the offshore Gulf waters). Though we will see a gradual wind shift through the day, speeds probably will not substantially increase until we head into the early evening and overnight hours when Small Craft Advisories are likely with 15-25kt winds and seas building to 4-7ft. Winds/seas should begin to gradually diminish Sunday afternoon. Light onshore winds resume Monday and should prevail for a good part of next week. 47 && .FIRE WEATHER... Issued at 134 PM CDT Fri Oct 31 2025 Some improvement in the amount of humidity will be seen on Saturday along with some scattered showers and isolated storms. These will be situated along/ahead of our next cold front moving into the region during the day and off the coast in the evening. A drier airmass filters back in behind the front which should persist into early next week. Daytime minimum RH`s should mostly be in the 30-40% territory Sunday into early week, but wind speeds do not look to be elevated. Continue to exercise caution and obey all local burn bans. 47 && .PRELIMINARY POINT TEMPS/POPS... College Station (CLL) 49 70 45 69 / 0 30 0 0 Houston (IAH) 54 73 50 72 / 0 30 10 0 Galveston (GLS) 65 76 59 72 / 10 50 40 0 && .HGX WATCHES/WARNINGS/ADVISORIES... TX...None. GM...None. && $$ DISCUSSION...47 AVIATION...Cotto MARINE...47