Area Forecast Discussion
Issued by NWS Austin/San Antonio, TX
Issued by NWS Austin/San Antonio, TX
102 FXUS64 KEWX 062330 AFDEWX Area Forecast Discussion National Weather Service Austin/San Antonio TX 630 PM CDT Mon Oct 6 2025 ...New AVIATION... .KEY MESSAGES... - Daytime temperatures more like the first week of September than the first week of October. - 15% to 20% chance for showers and thunderstorms Tuesday and Wednesday afternoons. && .SHORT TERM... (Tonight through Tuesday night) Issued at 1233 PM CDT Mon Oct 6 2025 The weak low pressure system that was previously south of Louisiana trended well east over the lower Mississippi Valley overnight, tempering low-level moisture advection in our area. However, southeasterly flow accompanying the evening`s seabreeze should still be on the more moist side and could spark a few brief showers over the Coastal Plains as they encounter a localized but strongly capped 650 to 700 hPa temperature deficit. Continued easterly to southeasterly flow will bring slightly more humid air into the area Tuesday. This will make tonight and Tuesday morning a little more mild than mornings past with the Rio Grande, Coastal Plains, and urbanized I-35 corridor likely remaining above 70. Upper-level ridge holding over the area will continue to limit shower activity Tuesday, but the increased moisture across South- Central Texas will support a bit more cloud cover and better but still low (15 to 20 percent) chances for isolated showers and perhaps a thunderstorm or two during the day. Better chances are weighted slightly towards the northern half of the CWA north of Highway 90. Highs in the low to mid 90s are forecast Tuesday for most of the South Central Texas. Tuesday night will be similar to Monday night with lows again in the mid 60s to low 70s. && .LONG TERM... (Wednesday through next Monday) Issued at 1233 PM CDT Mon Oct 6 2025 A weak frontal boundary is expected to move into at least the northern part of our CWA sometime Tuesday night into Wednesday. Without much of a signature aloft, frontogenesis fields look weak and there will likely not be much of a change in temperatures associated with the front aside from temporarily shaving off daytime temperatures by a degree or two. Frontal convergence with moist Gulf flow continuing should still offer another opportunity for a low (15 to 20 percent) chance for isolated showers or thunderstorms across mainly the northern half of the CWA for Wednesday. The front fizzles out Thursday as upper-level ridging becomes better centered over our area and surface high pressure wedges in behind the front, leading to a drying trend that continues into the weekend without rain chances. Sunny skies and ridging will maintain above average highs in the low to mid 90s, though the drier post-frontal conditions will allow overnight temperatures to cool back into the 60s late in the week and over the weekend. && .AVIATION... (00Z TAFS) Issued at 630 PM CDT Mon Oct 6 2025 Isolated SHRA activity ongoing east of I-35 is forecast to dissipate after sunset. VFR conditions through the evening, with broken stratus developing overnight and early Tuesday morning across portions of the Coastal Plains, I-35 corridor near SAT, and west through portions of the western Hill Country and Rio Grande. A mix of MVFR to IFR ceilings are forecast with this stratus, however patchy LIFR conditions are forecast across the Coastal Plains, southeast of SSF. Conditions should become VFR again around 15Z. Isolated SHRA activity is forecast Tuesday afternoon. && .PRELIMINARY POINT TEMPS/POPS... Austin Camp Mabry 71 92 71 92 / 10 20 10 10 Austin Bergstrom Intl Airport 70 93 71 93 / 10 10 10 10 New Braunfels Muni Airport 69 92 69 92 / 10 10 10 10 Burnet Muni Airport 68 88 67 86 / 10 20 10 10 Del Rio Intl Airport 72 93 72 90 / 0 10 10 20 Georgetown Muni Airport 68 92 70 90 / 10 20 10 10 Hondo Muni Airport 68 93 70 90 / 10 10 10 10 San Marcos Muni Airport 69 94 70 93 / 10 10 10 10 La Grange - Fayette Regional 70 94 70 93 / 10 10 10 10 San Antonio Intl Airport 71 92 72 91 / 10 10 10 10 Stinson Muni Airport 73 95 73 93 / 10 10 10 10 && .EWX WATCHES/WARNINGS/ADVISORIES... None. && $$ SHORT TERM...Tran LONG TERM....Tran AVIATION...76