Area Forecast Discussion
Issued by NWS Austin/San Antonio, TX
Issued by NWS Austin/San Antonio, TX
072 FXUS64 KEWX 111134 AAA AFDEWX Area Forecast Discussion...UPDATED National Weather Service Austin/San Antonio TX 634 AM CDT Thu Sep 11 2025 .KEY MESSAGES... - Temperatures slightly above mid September averages. - Uncertain very low rain chances. && .SHORT TERM (THROUGH FRIDAY)... Subtropical Ridge builds over our area the remainder of this week. The subsidence and dry airmass aloft with PWs below mid September averages keep rain chances out of the forecast for most areas. However, isolated showers and thunderstorms are possible due to a wave of average PWs near the Coastal Plains today and areas south and west of San Antonio to the Rio Grande Plains on Friday. Not much change in high temperatures is expected while low temperatures warm a little due to increased dewpoints. && .LONG TERM (FRIDAY NIGHT THROUGH WEDNESDAY)... The wave of seasonable PWs lingers along and west of the Rio Grande this weekend allowing for isolated showers and thunderstorms each day there. Elsewhere, the Subtropical Ridge axis and its subsidence and dry airmass keep rain out of the forecast. The passage of a series of mid level troughs well north of our area and a potential tropical system off the Pacific coast of Mexico may result in an increase in moisture next week. This may lead to low chances of showers and thunderstorms across most areas by the middle of next week. However, it must be noted that most models/ensemble members continue the dry pattern. Slightly above mid September average temperatures are expected with only subtle day to day changes indicated. && .AVIATION (12Z THURSDAY THROUGH FRIDAY)... Little to no change to the previous TAF forecast with light winds out of the south this afternoon and VFR conditions. Expect some patchy low clouds this morning but otherwise, fair weather is expected. && .PRELIMINARY POINT TEMPS/POPS... Austin Camp Mabry 72 97 71 96 / 0 0 0 0 Austin Bergstrom Intl Airport 70 97 69 96 / 0 0 0 0 New Braunfels Muni Airport 69 97 69 96 / 0 10 0 0 Burnet Muni Airport 69 92 68 92 / 0 0 0 0 Del Rio Intl Airport 74 93 74 93 / 0 10 10 20 Georgetown Muni Airport 69 95 69 95 / 0 0 0 0 Hondo Muni Airport 70 95 68 94 / 0 10 0 0 San Marcos Muni Airport 69 97 68 97 / 0 0 0 0 La Grange - Fayette Regional 69 95 68 96 / 0 0 0 0 San Antonio Intl Airport 73 96 71 96 / 0 10 0 0 Stinson Muni Airport 73 97 72 97 / 0 10 0 0 && .EWX WATCHES/WARNINGS/ADVISORIES... None. && $$ SHORT TERM...04 LONG TERM...04 AVIATION...MMM