FXUS64 KHGX 271738 AFDHGX Area Forecast Discussion National Weather Service Houston/Galveston TX 1238 PM CDT Mon Apr 27 2026 ...New DISCUSSION, MARINE... .KEY MESSAGES... - Marginal Risk of severe weather and excessive rainfall for much of SE Texas on Wednesday - Above normal temperatures in the 80s/mid 90s through Wednesday. Cooler with rising rain chances afterwards. - Late April cold front should push through the area Friday night with cooler and breezy wx in its wake. && .DISCUSSION... Issued at 1130 AM CDT Mon Apr 27 2026 If you are looking at GOES Satellite imagery this morning (or up in the sky in the Brazos Valley) you may see an interesting cloud feature called "gravity waves." These waves likely originated from the storms that moved through the DFW area yesterday...While they aren't expected to pose any threat to our area (mostly just cool to look at!), they could trigger a few isolated showers along their route. Anyways, just a little nerdy side note. For today, the weather should be relatively benign. We are in that pattern where the sea breeze could interact with the moist and unstable airmass over our area and produce showers and thunderstorms as it moves inland. If storms do develop, there is the potential for a few of them to become stronger and produce damaging wind and hail. The probability for that is on the lower end. Expect these conditions to continue through Tuesday. Temperatures will be on the warmer side with highs in the 80s to low 90s. The combination of temperatures and humidity may result in heat indices around 100F through mid-week. Around mid- week a shortwave trough is expected to move through the Plains and lift NE. As it lifts, a cold front is expected to be ejected towards SE Texas. Models have been consistently showing it stalling in the vicinity of the Piney Woods and Brazos Valley area. As the trough and front move into place, a subtropical mid- level high to our south may be nudged more southward into Mexico. Depending on how far south that feature is nudged and how far south outflow travels from pre- frontal convection, we may see scattered storms pop up over SE Texas on Wednesday. Initial thoughts were that these storms would be confined to the Brazos Valley/Piney Woods area...but the aforementioned factors could come into play and allow storms to develop further south and east into our area. That being said, we do remain moist and unstable, so will need to monitor the potential for some of these storms to become strong to severe and produce damaging wind and hail. Additionally, PWAT values are projected to increase to around 2-2.2" during the day Wednesday (above the 99th percentile). These values are unusually high for this time of the year (as noted by it being above the 99th percentile). WPC has placed the majority of SE Texas in a Marginal Risk for excessive rainfall for Wednesday. With short-term models coming into the picture over the next day, I imagine that that risk area may be upgraded (WPC noted this in their morning discussion). In any case, there will be the potential for heavy rain and isolated flash flooding for Southeast Texas on Wednesday. Going into the weekend, an amplified mid-upper level shortwave trough is expected to cross the southern plains and deepen into Texas. Another cold front is expected to move into SE Texas late Friday night, with widespread showers and scattered thunderstorms ahead of and along the front. Behind the front, expect breezy and cool conditions with highs in the 70s through the weekend. Lows through the weekend will be in the 40s to 50s. Bailey && .AVIATION... (12Z TAF Issuance) Issued at 500 AM CDT Mon Apr 27 2026 Widespread MVFR ceilings will continue through the late morning before lifting to VFR. MVFR ceilings may linger into the afternoon closer to the coast. Another round of breezy southerly winds today with sustained winds around 10-15 kt and gusts up to 20-25 kt this afternoon. MVFR ceilings filter in again this evening into Tuesday morning with the potential for intermittent periods of IFR ceilings. There is a low potential for an isolated shower/storm or two near the northern terminals late this afternoon/evening, so no mention in any of those TAFs at this time. Batiste && .MARINE... Issued at 1130 AM CDT Mon Apr 27 2026 Light to moderate southeasterly winds will continue through the next several days. Elevated water levels around 2.5 to 3.0 feet above MLLW are still expected at each high tide cycle early this week. A slight increase in winds and seas are expected beginning around Tuesday next week. Isolated showers and thunderstorms will be possible each day with higher rain chances Wednesday though the end of the next work week. A modest cold front should bring moderate to strong offshore winds Friday night into next weekend, likely warranting at least small craft advisories. 03/Bailey && .PRELIMINARY POINT TEMPS/POPS... College Station (CLL) 90 74 92 72 / 20 10 10 10 Houston (IAH) 89 76 91 74 / 10 10 10 0 Galveston (GLS) 83 77 84 75 / 0 0 10 0 && .HGX WATCHES/WARNINGS/ADVISORIES... TX...None. GM...None. && $$ DISCUSSION...Bailey AVIATION...Batiste MARINE...Bailey