988 FXUS64 KBRO 212302 AAB AFDBRO Area Forecast Discussion...UPDATED National Weather Service Brownsville TX 602 PM CDT Sat Jun 21 2025 ...New AVIATION... .SHORT TERM... (Tonight through Sunday night) Issued at 1221 PM CDT Sat Jun 21 2025 Southeasterly winds and tropical moisture will support continued rain chances tonight into tomorrow, with around a 20-30% chance mostly east of I-69C. This precipitation is expected to be isolated to scattered, with some areas receiving locally heavy rainfall and lightning with any thunderstorms that happen to form. Low temperatures tonight and tomorrow night are expected to get down into the mid-70s with calm winds and nearly saturated air. Skies should be mostly cloudy. High temperatures tomorrow should reach the mid-90s with partly cloudy skies and heat indices getting up to around 100. Beachgoers should exercise caution and remain situationally aware if swimming, as there is a moderate risk of rip currents. && .LONG TERM... (Monday through next Saturday) Issued at 1221 PM CDT Sat Jun 21 2025 Unsettled weather is expected to continue through all of next week, as tropical moisture will continue to pour into the region, bringing daily rain chances (around 20-30% each day) mainly east of I-69E. Isolated to scattered showers and/or thunderstorms are expected, particularly along the sea breeze front. Temperatures will also remain steady throughout the week as well, with highs getting up into the mid-90s and lows getting down into the mid-to-upper-70s. Humid conditions will also result from continued tropical moisture, and heat indices could be ten or more degrees hotter-feeling than the actual air temperatures. && .AVIATION... (00Z TAFS) Issued at 559 PM CDT Sat Jun 21 2025 VFR conditions will prevail through the TAF period. A passing shower is still possible this evening, though confidence remains low that any aerodrome will be directly impacted. Rain chances do increase on Sunday, with BRO being the most likely to see precipitation, which could lower visibilities to MVFR/IFR, bring heavy rain, cloud to ground lightning, and gusty winds. && .MARINE... Issued at 1221 PM CDT Sat Jun 21 2025 Moderate seas with potential Small Craft Exercise Caution conditions are expected for the next few days, with wave heights between 3-5 feet expected in the Gulf. By midweek next week, winds should be lower and seas should calm to between 2-4 feet, making marine conditions more favorable. && .PRELIMINARY POINT TEMPS/POPS... BROWNSVILLE 78 92 78 92 / 20 30 10 30 HARLINGEN 75 93 75 93 / 10 20 10 20 MCALLEN 77 95 77 97 / 10 20 0 10 RIO GRANDE CITY 75 92 75 94 / 10 10 0 10 SOUTH PADRE ISLAND 80 87 80 87 / 20 20 20 20 BAYVIEW/PORT ISABEL 78 90 78 90 / 10 20 10 20 && .BRO WATCHES/WARNINGS/ADVISORIES... TX...None. GM...None. && $$ SHORT TERM...55 LONG TERM....55 AVIATION...68