FXUS64 KBRO 202245 AFDBRO Area Forecast Discussion National Weather Service Brownsville TX 545 PM CDT Fri Mar 20 2026 ...New AVIATION... .KEY MESSAGES... Updated at 545 PM CDT Fri Mar 20 2026 Key Messages: * Warm and dry weather continues through next week. * Wildfire threat remains elevated across Deep South Texas. && .DISCUSSION... Issued at 1223 PM CDT Fri Mar 20 2026 High pressure dominates Deep South Texas into late next week, with above to well-above normal temperatures and no chance of rain. Breezy southeasterly winds each afternoon may help maintain relative humidity values above any fire weather criteria along and east of US281/I69C. Relative humidity values to the west across the brush country will drop below 20-30 percent each afternoon, but likely do so without much of a breeze, until the evening, when moisture is recovering, also somewhat limiting fire weather concerns at this time. The entire region remains primed for wildfires and burn bans are in effect across all of Deep South Texas, except Kenedy County, where the largest wildfire in the state of Texas kicked up yesterday, currently 75% contained at 2300 acres. CPC is still leaning toward above normal rainfall occurring during the final days of March and first of April at a 40-50 percent probability. && .AVIATION... (00Z TAFS) Issued at 545 PM CDT Fri Mar 20 2026 Through 00z Sunday....VFR conditions are expected to prevail through the 00z TAF period under mostly clear skies. South-southeast winds with speeds between 7-15 kts will persist through the 00z TAF period. Winds could gusts as high as 20-25 kts during the afternoon/evening hours. && .MARINE... Issued at 1223 PM CDT Fri Mar 20 2026 Southeasterly winds persist through the forecast period with generally favorable marine conditions. Afternoon breezes across the bay may occasionally kick up a moderate chop or brief Small Craft Caution gusts. && .PRELIMINARY POINT TEMPS/POPS... BROWNSVILLE 64 86 65 85 / 0 0 0 0 HARLINGEN 61 91 62 90 / 0 0 0 0 MCALLEN 64 95 65 94 / 0 0 0 0 RIO GRANDE CITY 60 95 61 94 / 0 0 0 0 SOUTH PADRE ISLAND 68 77 68 77 / 0 0 0 0 BAYVIEW/PORT ISABEL 63 85 64 84 / 0 0 0 0 && .BRO WATCHES/WARNINGS/ADVISORIES... TX...None. GM...None. && $$ SHORT TERM...56-Hallman LONG TERM....56-Hallman AVIATION...23-Evbuoma