Area Forecast Discussion
Issued by NWS Austin/San Antonio, TX
Issued by NWS Austin/San Antonio, TX
221 FXUS64 KEWX 301759 AFDEWX Area Forecast Discussion National Weather Service Austin/San Antonio TX 1259 PM CDT Wed Jul 30 2025 ...New SHORT TERM, LONG TERM, AVIATION... .SHORT TERM... (Tonight through Thursday night) Issued at 1251 PM CDT Wed Jul 30 2025 Today`s high temperatures are forecast to hit the lower 90s and up to 102 along the southern part of the Rio Grande after a cool morning in the 60s over many locations. Satellite images from the visible, IR, and WV channels are showing high clouds (moisture) spreading across the eastern half of the local area as an upper level inverted trough axis moves across Louisiana. The upper level trough is forecast to move from east to west for the rest of today into Thursday. Increased moisture arrives to the local area as the trough axis gets closer to east Texas and the upper level ridge that sits over South Central Texas early this afternoon pushes to the west for the next 24 hours. So, no rain expected for the rest of today with heat index values at or below high temperature values due to a dry air mass dominating the lower levels. By Thursday afternoon, the upper level inverted trough moves across the middle Texas coast and brings a slight chance for showers and storms mainly over portions of the Coastal Plains. Humidity values are forecast to increase resulting in dew points in the mid 60s to lower 70s. Therefore, a top of having a hot day forecast for Thursday with highs in the mid 90s to 101 and up to 103 across the southern Rio Grande, the heat index values are forecast to range from 100 to 105 over some locations across the Coastal Plains and Rio Grande due to increased moisture. && .LONG TERM... (Friday through Wednesday) Issued at 1251 PM CDT Wed Jul 30 2025 Rain chances persist and spread across South Central Texas on Friday into the first part of the weekend as the upper level inverted trough moves across the local area. By Sunday, the upper level trough pushes way to our west while the subtropical ridge builds back into our area resulting in dry weather conditions. The next work week looks dry with seasonable temperatures as we enter into the month of August. && .AVIATION... (18Z TAFS) Issued at 1251 PM CDT Wed Jul 30 2025 Current visible satellite shows some high level clouds working into the area from east to west as an inverted trough makes its way towards the TX coast. Regardless, VFR cigs are expected at all TAF sites throughout the forecast period. Southerly winds less then 10 kt are expected until late overnight when the trough approaches causing winds to switch to the west/southwest through the remainder of the TAF period for I-35 TAF sites. For KDRT winds will remain east southeasterly through the period. && .PRELIMINARY POINT TEMPS/POPS... Austin Camp Mabry 76 101 78 100 / 0 0 0 20 Austin Bergstrom Intl Airport 74 101 77 100 / 0 0 0 20 New Braunfels Muni Airport 72 101 74 100 / 0 0 0 10 Burnet Muni Airport 73 99 76 98 / 0 0 0 20 Del Rio Intl Airport 74 101 77 101 / 0 0 0 0 Georgetown Muni Airport 75 101 78 100 / 0 0 0 20 Hondo Muni Airport 72 101 75 100 / 0 0 0 10 San Marcos Muni Airport 73 101 75 100 / 0 0 0 10 La Grange - Fayette Regional 74 100 76 99 / 0 10 0 20 San Antonio Intl Airport 75 101 77 100 / 0 0 0 10 Stinson Muni Airport 75 102 76 102 / 0 0 0 10 && .EWX WATCHES/WARNINGS/ADVISORIES... None. && $$ Short-Term...17 Long-Term...17 Aviation...CJM