Area Forecast Discussion
Issued by NWS Austin/San Antonio, TX
Issued by NWS Austin/San Antonio, TX
748 FXUS64 KEWX 021131 AFDEWX Area Forecast Discussion National Weather Service Austin/San Antonio TX 631 AM CDT Sat Aug 2 2025 ...New AVIATION... .KEY MESSAGES... - Isolated thunderstorms could produce locally heavy rain today from the Southern Edwards Plateau to the Coastal Plains && .SHORT TERM... (Today through Sunday) Issued at 101 AM CDT Sat Aug 2 2025 Convection from Friday evening has diminished with the loss of daytime heating. Radar estimates show most of the rain fell across the southern Edwards Plateau and Hill Country, with some isolated totals farther east into the Interstate 35 corridor north of San Marcos. For today, we expect to see more scattered afternoon convection develop across the region with models tending to show higher coverage of showers and storms across the southern Edwards Plateau, western Hill Country, I-35 corridor near and south of Austin and coastal plains. Similar to yesterday, some locally heavy rainfall can be expected, with a quick 1-2 inches possible given the amount of moisture and weak steering flow. With moisture levels a little higher over the coastal plains, some near 3" totals are possible here. Some locally gusty winds can also be expected in an near the stronger storms. While a gradual decrease in the coverage of convection is expected with the loss of daytime heating, some isolated activity may continue across the coastal plains through the late evening. The subtropical ridge axis briefly builds in from the west on Sunday and this should keep most of the region dry. The exception being across the coastal plains into the Highway 77 corridor where some isolated late afternoon convection is possible. High temperatures for both Saturday and Sunday will range from the mid 90s to near 103 degrees along with overnight lows in the 70s. && .LONG TERM... (Sunday night through Friday) Issued at 101 AM CDT Sat Aug 2 2025 Models suggest an upper level disturbance embedded in the northwest flow aloft will move into the region on Monday. This should help produces another round of scattered afternoon showers and storms mainly from the Hill Country eastward into the I-35 corridor (mainly north of San Antonio) and the coastal plains. Increased clouds and rain chances should keep highs down into the lower 90s across the Hill Country, while lower 100s persist along the Rio Grande. For the remainder of the forecast period, the subtropical ridge axis centered over the desert southwest will keep the pattern dry for most of south central Texas. The one exception will be over the coastal plains where some isolated, afternoon storms will be possible as the sea breeze moves inland. Temperatures will be close to normal for early August. && .AVIATION... (12Z TAFS) Issued at 630 AM CDT Sat Aug 2 2025 No significant changes for the coming TAF period. VFR conditions are forecast through the period at all terminals. Thunderstorms could bring winds up to around 20 kts and locally heavy downpours in the Austin and San Antonio areas this afternoon and evening. Any convection will not lower the flying category. Outside of thunderstorms wind will be less than 10 kts. Winds in San Antonio will be from the south-southwest during the afternoon and then shift to the south this evening. No rain is forecast at KDRT. && .PRELIMINARY POINT TEMPS/POPS... Austin Camp Mabry 76 98 77 95 / 20 10 10 40 Austin Bergstrom Intl Airport 77 99 77 95 / 20 10 10 40 New Braunfels Muni Airport 75 99 75 97 / 20 10 10 30 Burnet Muni Airport 74 95 75 92 / 10 10 20 30 Del Rio Intl Airport 78 103 80 103 / 10 0 0 0 Georgetown Muni Airport 75 98 76 93 / 10 10 20 40 Hondo Muni Airport 75 101 76 100 / 20 10 10 10 San Marcos Muni Airport 75 99 75 96 / 20 10 10 30 La Grange - Fayette Regional 75 97 76 94 / 20 20 10 40 San Antonio Intl Airport 77 100 78 98 / 20 10 10 20 Stinson Muni Airport 77 102 77 101 / 20 10 10 20 && .EWX WATCHES/WARNINGS/ADVISORIES... None. && $$ Short-Term...Platt Long-Term...Platt Aviation...05