Area Forecast Discussion
Issued by NWS Austin/San Antonio, TX
Issued by NWS Austin/San Antonio, TX
090 FXUS64 KEWX 030548 AAA AFDEWX Area Forecast Discussion...UPDATED National Weather Service Austin/San Antonio TX 1248 AM CDT Thu Sep 3 2026 ...New AVIATION... .KEY MESSAGES... Updated at 1236 AM CDT Thu Sep 3 2026 - Daily low end (10-25%) rain/storm chances persist for portions of the region each day. - Above average temperatures remain with elevated afternoon heat indices along and east of the I-35 corridor. && .SHORT TERM... (Tonight through Thursday night) Issued at 1223 PM CDT Wed Sep 2 2026 Tropical Depression Edouard currently located north of the Upper Texas coast will progress north-northwest today before the low level circulation eventually dissolves in the next day. In the far northeast counties of our forecast area, some mid to high level clouds and low rain chances will be the main impacts associated with this decaying system. Any isolated showers or thunderstorms are favored mainly from the mid-afternoon into the early evening with peak heating. Guidance keeps rain totals mainly around a half an inch, though we cannot rule out an isolated downpour producing amounts over 1 inch. With the exception of gusty wind with any thunderstorms, wind will remain light today with hot temperatures from the upper 90s to around 103 degrees. Increased moisture over the area may allow some locations to see heat index values from the 105-108 degree range this afternoon as well. Mostly clear skies are expected tonight with temperatures dropping into the 70s across the area. Thursday will be similar to today with low rain chances mainly focused in our far northeastern portion of the area including the Austin metro. Showers and a few thunderstorms may linger into Friday morning. && .LONG TERM... (Friday through next Wednesday) Issued at 1223 PM CDT Wed Sep 2 2026 Increased moisture sticks around in the lower and middle levels Friday through the weekend drifting towards South Texas as mid-level ridging builds over the Southern and Central Plains through early next week. The pattern becomes a bit more disorganized/uncertain heading into the middle of next week with a possible inverted trough or shortwave moving towards the area. Rain chances are seen Friday into next week though locations may vary day to day with no notable upper level support. The Coastal Plains will consistently have the better chances due to any seabreeze activity in the afternoon and evenings. Temperatures remain relatively steady this weekend into next week from the low 90s to around 100 degrees. Heat index values will generally be from 102 to 108 degrees, highest in the Coastal Plains and along the I-35 corridor where higher moisture resides. Lows remain in the 70s with possibly some increased cloudiness as we head towards the middle of next week. && .AVIATION... (06Z TAFS) Issued at 1236 AM CDT Thu Sep 3 2026 Low cloud development is noted over the middle Texas coast and hi-res model forecast soundings continue to favor MVFR cigs for the I-35 corridor early this morning. We have gone with prevailing MVFR cigs at SAT and SSF along with a TEMPO group at AUS. While there could be some potential for low clouds near DRT in the 12-14Z time frame, we will not mention any clouds as confidence is low at this time. Some isolated afternoon convection will be possible near AUS late this afternoon, but coverage is too low to mention at this time. && .PRELIMINARY POINT TEMPS/POPS... Austin Camp Mabry 101 77 97 75 / 20 20 30 10 Austin Bergstrom Intl Airport 100 77 96 73 / 20 20 30 20 New Braunfels Muni Airport 100 76 97 73 / 10 10 30 20 Burnet Muni Airport 99 75 93 73 / 30 30 30 10 Del Rio Intl Airport 104 79 102 78 / 0 0 10 0 Georgetown Muni Airport 99 76 94 75 / 30 30 30 10 Hondo Muni Airport 101 75 98 74 / 10 0 20 20 San Marcos Muni Airport 100 76 96 72 / 20 20 30 20 La Grange - Fayette Regional 99 77 96 74 / 20 30 40 20 San Antonio Intl Airport 101 78 97 75 / 10 10 20 20 Stinson Muni Airport 102 77 99 75 / 10 10 20 20 && .EWX WATCHES/WARNINGS/ADVISORIES... None. && $$ SHORT TERM...62 LONG TERM....62 AVIATION...Platt