


Area Forecast Discussion
Issued by NWS Austin/San Antonio, TX
Issued by NWS Austin/San Antonio, TX
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739 FXUS64 KEWX 241142 AFDEWX Area Forecast Discussion National Weather Service Austin/San Antonio TX 642 AM CDT Tue Jun 24 2025 ...New AVIATION... .SHORT TERM... (Today through Wednesday) Issued at 121 AM CDT Tue Jun 24 2025 Key messages: - Seasonable temperatures and heat index values - Low chances of rain each day Coastal Plains to I-35 corridor A Tropical Upper Tropospheric Trough (TUTT) currently seen over the northwestern Gulf drifts over southern Texas/northern Mexico today and Wednesday. This increases moisture levels (PWs) to about 150 percent of seasonal levels. It also enhances forcing from heating and seabreeze. As a result, low chances of showers and thunderstorms will extend from the Coastal Plains in the morning to the I-35 corridor in the afternoon into early evening. Cannot rule out a few showers and a thunderstorm or two during the early evening over the eastern Hill Country and Winter Garden. With little or no changes to the lower level thermal ridge, temperatures and heat index values remain close to late June averages. && .LONG TERM... (Wednesday night through Monday) Issued at 121 AM CDT Tue Jun 24 2025 Key messages: - Seasonable temperatures and heat index values - Low chances of rain mainly Coastal Plains to, at times, the I-35 corridor The TUTT weakens and moves off to the west as the Subtropical Ridge becomes more dominant later this week into the weekend. PWs decrease with forcing from heating and seabreeze causing the low chances of showers and thunderstorms to retreat to near the Coastal Plains each afternoon. The Ridge weakens later in the weekend into next week with possible TUTT or easterly waves moving across with an increase in PWs. The low chances of showers and thunderstorms spread west to near the I-35 corridor. Little or no changes continue in the lower level thermal ridging keeping temperatures and heat index values close to average to finish out June. && .AVIATION... (12Z TAFS) Issued at 635 AM CDT Tue Jun 24 2025 We have scaled back expected MVFR conditions at AUS into a TEMPO group as clouds have mainly developed near the escarpment. Farther south at SAT, we did keep a TEMPO group for IFR, with low end MVFR at SSF. Based on recent trends, we also pulled back to a TEMPO group at DRT for some brief MVFR clouds this morning. Otherwise, expect gusty southeast winds today along with some afternoon convection from the coastal plains to near I-35. With only isolated coverage, we will not mention in the forecast for the I-35 sites. Low clouds look to return to our TAF sites early Wednesday morning. && .PRELIMINARY POINT TEMPS/POPS... Austin Camp Mabry 96 74 94 75 / 10 10 20 0 Austin Bergstrom Intl Airport 95 74 93 73 / 20 10 20 0 New Braunfels Muni Airport 93 72 91 73 / 20 10 20 0 Burnet Muni Airport 93 72 91 72 / 10 10 10 0 Del Rio Intl Airport 98 76 98 76 / 0 0 0 0 Georgetown Muni Airport 94 72 93 73 / 10 10 10 0 Hondo Muni Airport 92 72 91 72 / 10 0 0 0 San Marcos Muni Airport 93 72 92 73 / 20 10 20 0 La Grange - Fayette Regional 93 73 91 73 / 20 0 40 0 San Antonio Intl Airport 92 74 91 74 / 20 10 20 0 Stinson Muni Airport 93 75 93 75 / 20 0 20 0 && .EWX WATCHES/WARNINGS/ADVISORIES... None. && $$ Short-Term...04 Long-Term...04 Aviation...Platt