FXUS64 KHGX 271110 AFDHGX Area Forecast Discussion National Weather Service Houston/Galveston TX 610 AM CDT Sat Jun 27 2026 ...New AVIATION... .KEY MESSAGES... - Seasonably hot conditions will continue through at least early next week. Peak heat index values between 102-107F (39-42C) through Tuesday. - Moderate to high rip current risk along area beaches through the weekend. - Rain chances re-enter the forecast towards the middle of next week. && .DISCUSSION... Issued at 1208 AM CDT Sat Jun 27 2026 Mid-lvl ridging will shift east of the area today, becoming centered over the Lower Mississippi Valley by Sunday and then gradually progressing further northeastward through the upcoming workweek. The proximity of the ridge and its associated subsidence inversion and elevated dry layer will keep rain chances quite low through early next week. The highest chances for a shallow sea-breeze induced shower or two looks to be on Sunday as the capping inversion weakens somewhat, but given meager moisture and forcing, fcst PoPs are still only around 10%. As mentioned in previous discussions a noticeable SAL plume will pass through the area Sunday PM through early Tuesday, bringing renewed dry and hazy conditions. As the ridge shifts northeast towards the middle of next week, easterly flow on its southern flank will enable some deeper moisture to filter into the area, with PWATs increasing to around 2 inches by Wednesday. Consequently low- medium (20-35%) rain chances return to the forecast Wednesday/Thursday, although the track of a weak upper- lvl disturbance will likely determine how widespread rain coverage is. The main forecast concern will continue to be seasonably hot and humid conditions with forecast highs in the low to mid 90s, lows in the upper 70s/low 80s and peak heat indices approaching or exceeding 105 degrees each afternoon. As mentioned in previous discussions, although heat indices and WBGT values should remain just below advisory criteria, those with outdoor plans should still take the necessary precautions to avoid heat stress. && .AVIATION... (12Z TAF Issuance) Issued at 610 AM CDT Sat Jun 27 2026 Patchy MVFR ceilings exist this morning, mainly in the vicinity of CLL, with more spotty instances further south and east. These will mix out or lift to VFR by mid-morning. Another round of MVFR ceilings is possible during the early morning hours Sunday with highest probabilities north and west of Houston. Otherwise, VFR conditions will prevail through the TAF period. Southerly winds may gust to 20-25 kt at times late this morning through this afternoon and again during the daytime hours Sunday. && .MARINE... Issued at 1208 AM CDT Sat Jun 27 2026 Moderate southerly winds and 3 to 5 foot seas will prevail through the weekend. There will be a moderate to high risk of rip currents along area beaches through early next week. Rain chances will remain very low through early next week...increasing to the low to medium range by mid-week. && .PRELIMINARY POINT TEMPS/POPS... College Station (CLL) 94 77 95 78 / 0 10 10 0 Houston (IAH) 94 79 95 79 / 0 10 10 0 Galveston (GLS) 89 84 89 84 / 10 10 10 0 && .HGX WATCHES/WARNINGS/ADVISORIES... TX...High Rip Current Risk through Sunday morning for TXZ436>439. GM...Small Craft Should Exercise Caution until 7 AM CDT this morning for GMZ330-335-350-355-370-375. && $$ DISCUSSION...NC AVIATION...DL MARINE...NC