FXUS64 KBRO 270324 AFDBRO Area Forecast Discussion National Weather Service Brownsville TX 1024 PM CDT Sun Oct 26 2025 ...New DISCUSSION, MARINE... .KEY MESSAGES... Updated at 1013 PM CDT Sun Oct 26 2025 - Near or record-breaking heat lasts through Tuesday. - A cold front brings cooler temperatures, breezy winds, and rain chances Tuesday night and Wednesday. && .DISCUSSION... Issued at 1013 PM CDT Sun Oct 26 2025 Hot, primarily rain-free conditions are expected to continue through Tuesday, with high temperatures well above normal for late October. Tuesday/Wednesday, a strong upper-level trough digging south into the central plains will push a strong cold front through deep South Texas Tuesday night into early Wednesday. This frontal passage will increase rain chances along the front (between 10-50%, highest chances along the coast), and bring windy conditions. Showers and thunderstorms along the front are not expected to be severe at this time, and inland extent is uncertain. Long range guidance agree the highest chances of rain to be over the Gulf (70%) and along the coast (50%) between midnight and sunrise Wednesday. Cold air advection behind this front is expected to bring much more seasonable temperatures for late October/early November in the latter half of the week, with high temperatures in the upper 70s to low 80s, and overnight lows in the mid-upper 40s (excluding RGV and coast) to low 50s. Dry air behind the front could drop precipitable water to minimum values based on climatology (~0.5") or less, leaving relative humidity values in the teens. This paired with 20-foot winds 15 kts or greater may bring elevated fire weather concerns Wednesday in the eastern half of the CWA. Next weekend, this dry air should keep temperatures comfortable as highs climb through the 80s. && .AVIATION... (00Z TAFS) Issued at 628 PM CDT Sun Oct 26 2025 VFR conditions are expected to prevail at all sites over the 00Z TAF cycle. Easterly winds becoming light overnight, shifting to southeasterly Monday. There is a less than 30% chance of fog forming over the airfields before sunrise Monday morning, which may reduce visibility to MVFR or lower conditions. && .MARINE... Issued at 1013 PM CDT Sun Oct 26 2025 Generally favorable conditions will persist until overnight Tuesday as an approaching cold front elevates seas to moderate with strong northerly winds. Near-gale gusts are possible early Wednesday. Small Craft Advisory conditions will likely be present Tuesday night through Thursday. Increased chances of rain (high, around 70 percent) over the Gulf will accompany the mid-week cold frontal passage. && .PRELIMINARY POINT TEMPS/POPS... BROWNSVILLE 93 74 92 73 / 10 0 0 0 HARLINGEN 94 69 95 69 / 0 0 0 0 MCALLEN 97 74 98 73 / 0 0 0 0 RIO GRANDE CITY 96 71 98 69 / 0 0 0 0 SOUTH PADRE ISLAND 87 79 86 78 / 10 0 0 0 BAYVIEW/PORT ISABEL 90 72 90 72 / 10 0 0 0 && .BRO WATCHES/WARNINGS/ADVISORIES... TX...None. GM...None. && $$ SHORT TERM...69-HK LONG TERM....69-HK AVIATION...69-HK