274 FXUS64 KSJT 141108 AFDSJTArea Forecast Discussion National Weather Service San Angelo TX 608 AM CDT Sun Sep 14 2025
...New AVIATION...
.KEY MESSAGES...
- Low to medium chance (20-40%) of showers and thunderstorms today along and west of a Throckmorton to Sonora line.
- Otherwise, conditions will continue to be dry and warm through the upcoming week.
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.SHORT TERM... (Today and tonight) Issued at 118 AM CDT Sun Sep 14 2025
Early this morning, some lingering showers over the Big Country are continuing to dissipate. Temperatures generally are in the mid 70s with mostly cloudy skies and light southeast winds. Much of west Texas will remain at the south end of a mid-level trough centered over eastern Colorado. Just like yesterday, south to southeast winds at the surface should increase this afternoon with gusts around 20 MPH at times. Similar to yesterday, close to 1000 J/kg of instability is expected to develop this afternoon, mainly west of a line from Throckmorton to Sonora. Given forecast high temperatures in the low 90s with dewpoints in the mid 60s, there is a low chance for showers and thunderstorms over our western counties this afternoon. The aforementioned trough axis is expected to lift northeastward throughout the day today which could provide some dynamic support for any storms that develop So far, high-res models indicate storms will develop over the Permian Basin and move into our western counties late this afternoon and evening before dissipating after sunset. While some showers and/or clouds could linger through part of the night, winds should diminish and allow low temperatures to range from the mid 60s to low 70s.
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.LONG TERM... (Monday through Saturday) Issued at 118 AM CDT Sun Sep 14 2025
Most of the shower and storm activity should be over by Monday morning, but we could see some isolated stuff linger into Monday afternoon. The weather will stay relatively quiet for Tuesday and Wednesday as weak high pressure builds aloft. Temperatures will be a few degrees above normal and PoPs will stay on the low end. Rain chances increase slightly for late Wednesday into thursday, as an upper level trough approaches the area. Some models are hinting at a front around our area Thursday into Friday, but there is still a lot of uncertainty with the southward progression and timing of the potential front. Right now, the front looks to have minimal impact on our area.
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.AVIATION... (12Z TAFS) Issued at 607 AM CDT Sun Sep 14 2025
An outflow boundary from earlier overnight convection is currently moving through the Big Country, which will turn winds out of the northwest for a few hours. Some light showers are occurring behind this boundary. Otherwise, generally VFR conditions are expected for the next 24 hours. By 17Z, south to southeast winds will increase to 10-15KT with gusts up to 20KT at times. There is a low chance for thunderstorms after 21Z west of a line from Throckmorton to Sonora, but confidence was too low to include at individual TAF sites at this time.
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.PRELIMINARY POINT TEMPS/POPS... Abilene 92 71 93 70 / 20 10 20 0 San Angelo 89 68 91 66 / 20 10 10 0 Junction 91 66 91 64 / 10 10 10 0 Brownwood 92 68 92 67 / 0 0 10 0 Sweetwater 90 69 91 69 / 40 20 20 0 Ozona 86 68 89 65 / 30 10 10 0 Brady 89 68 89 66 / 10 0 10 0
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.SJT WATCHES/WARNINGS/ADVISORIES... None. &&
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SHORT TERM...SK LONG TERM....AP AVIATION...SK
NWS SJT Office Area Forecast Discussion