FXUS64 KEWX 212319 AFDEWX Area Forecast Discussion National Weather Service Austin/San Antonio TX 619 PM CDT Sat Mar 21 2026 ...New AVIATION... .KEY MESSAGES... - Well above average high temperatures through the middle of next week with record highs possible today and Sunday. - Elevated fire weather conditions possible most days due to low minimum humidities. && .SHORT TERM... (Tonight through Sunday night) Issued at 126 PM CDT Sat Mar 21 2026 A portion of warmer air aloft has spread across much of Texas along the eastern lobe of the mid- to upper-level high aloft. With this in place, today and tomorrow are expected to offer the warmest temperatures of this current warm stretch with highs in the 90s throughout South-Central Texas and nearing 100 in the Rio Grande Plains. Sunday's record highs will be a little harder to hit along the I-35 corridor, while Del Rio may again be on record footing tomorrow. The NBM has tended to marginally underestimate daytime temperatures and overestimate dew points in recent days, so forecast temperatures continue to be nudged slightly upwards relative to the model blend. Overnight temperatures remain mild with southerly to southeasterly boundary layer flow continuing beneath dominant high pressure aloft. Breezy southerly winds Sunday are expected to produce elevated to near critical fire weather conditions, particularly along the Rio Grande, southern Edwards Plateau, and Hill Country, possibly extending to the I-35 corridor. Locally critical fire weather conditions could also develop Sunday afternoon at higher elevations. && .LONG TERM... (Monday through next Saturday) Issued at 126 PM CDT Sat Mar 21 2026 Dry, warm, and mostly clear weather will continue through the next week. The upper ridge flattens some Monday and allows a weak front to near our area Monday morning. This front may stall near or just within our area but should quickly lose its momentum and strength as winds aloft to the north of the front become zonal. Without much moisture transport available, no rain is expected with the front. A slight backing of winds ahead of the front to southeasterly and some cooling of air aloft thanks to the front should bring highs down a few degrees into the upper 80s and low 90s for Monday and Tuesday. There has been a slight trend showing a mid- to upper-level disturbance in the western Gulf moving a little closer to the coast on Monday and Tuesday, but its placement remains too far and conditions aloft too suppressive to provide any meaningful rain chances. Restrengthening ridging over the southwestern US Wednesday brings another increase in temperatures with highs again in the 90s across South-Central Texas. Towards the end of next week, the ridge may weaken enough to allow another, possibly more well-defined front to approach the region. Cluster analyses suggest an even split in ensembles depicting this front, but whether or not it makes it here late in the week (Friday/Saturday) looks inversely correlated to the strength of ridging over our area. && .AVIATION... (00Z TAFS) Issued at 617 PM CDT Sat Mar 21 2026 Little to no change from the previous forecast other than to tweak wind speeds a directions slightly through the forecast period. MVFR ceilings are expected but AUS may see a brief period of FEW to SCT clouds around 1000 ft between 12-16Z Sunday. && .PRELIMINARY POINT TEMPS/POPS... Austin Camp Mabry 62 93 60 88 / 0 0 0 0 Austin Bergstrom Intl Airport 60 93 58 89 / 0 0 0 0 New Braunfels Muni Airport 58 92 56 87 / 0 0 0 0 Burnet Muni Airport 61 93 58 86 / 0 0 0 0 Del Rio Intl Airport 61 98 61 91 / 0 0 0 0 Georgetown Muni Airport 63 93 58 88 / 00 0 0 Hondo Muni Airport 55 93 55 89 / 0 0 0 0 San Marcos Muni Airport 59 92 57 89 / 0 0 0 0 La Grange - Fayette Regional 60 91 59 87 / 0 0 0 0 San Antonio Intl Airport 60 93 59 87 / 0 0 0 0 Stinson Muni Airport 59 93 58 89 / 0 0 0 0 && .EWX WATCHES/WARNINGS/ADVISORIES... None. && $$ SHORT TERM...Tran LONG TERM....Tran AVIATION...MMM