Area Forecast Discussion
Issued by NWS Austin/San Antonio, TX
Issued by NWS Austin/San Antonio, TX
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062 FXUS64 KEWX 070006 AFDEWX Area Forecast Discussion National Weather Service Austin/San Antonio TX 706 PM CDT Sat Jun 6 2026 ...New AVIATION... .KEY MESSAGES... - Low to medium chances for isolated to scattered rains today. - Warm and humid weather next week with most areas remaining dry. && .SHORT TERM... (Tonight through Sunday night) Issued at 124 PM CDT Sat Jun 6 2026 The upper-level low that contributed to last night`s scattered torrential rains is moving northeast, allowing a conveyor belt of drier air aloft to work its way over South-Central Texas with the more favored regions for heavy rain being pushed north and east of the area. This subsidence should tend to have a suppressive effect on storm potential in our region today, though the continued presence of humid near-surface conditions should support isolated shower activity heading into the evening today. Chances are greatest east of I-35 (in the 30 to 50 percent range along the Highway 77 corridor) where PWATs are still in the 1.7-1.9 inch range (around the 90th-95th percentile) and could support a few locally heavier downpours. There is also a around 20 to 30 percent chance of isolated showers closer to the upper-level low over the Edwards Plateau and Hill Country through the evening, though overall moisture content will be lower than yesterday. Given the sensitivity of some of our soils from recent rains, it will still be worth monitoring any heavier shower that overlaps with the most saturated locations for increased runoff. The core of the upper-level low is expected to move out of Texas tonight. However, the lack of a front and persistence of the subtropical jet stream over the state means southerly flow will likely keep the air humid over the area heading into the week ahead with mild nights and hot and muggy afternoons. The combination of moisture and warmth will start to promote higher heat indices (apparent temperatures). Heat indices are forecast to near or top 100F for many in the area Sunday, with the highest chances of heat indices reaching the 100-105F range in the Winter Garden and Rio Grande Plains. Trailing convergence from air funneling up towards the outgoing upper-level low may lead to a few afternoon showers and storms mainly east of I-35 on Sunday with chances around 20-30 percent. && .LONG TERM... (Monday through next Saturday) Issued at 124 PM CDT Sat Jun 6 2026 Broad but weak subtropical ridging will start to build over Gulf and our area Monday, and gradually slosh its way west through the upcoming week. This should keep most areas dry for the week, though southerly flow should continue to sweep in Gulf air beneath the ridge and may occasionally spark a few seabreeze showers and storms in the Coastal Plains each late-afternoon. Without much to clear out the influx of warm air, elevated temperatures and dew points will continue to drive up heat indices. Highs are forecast to remain in the 90s with lows in the 70s, but peak heat indices in the 100-105F range could become more widespread by the end of the week. && .AVIATION... (00Z TAFS) Issued at 655 PM CDT Sat Jun 6 2026 Minimal convective activity is expected near any of the TAF sites over the next day, so no TEMPO or PROB30 groups will be needed to address the isolated chances. A few Coastal Prairies showers and storms added to the momentum of the sea-breeze boundary, and this is expected to be noticeable at AUS in the next 10 minutes or so. Perhaps some gusts could get over 20 knots, but with no nearby convection, will keep to the typical evening sustained speed around 10 knots. Late tonight into Sunday morning, we expect the low clouds and light fog to arrive and depart at the usual diurnal times at each station with the saturated soils and light overnight winds allowing for some more IFR conditions around daybreak. && .PRELIMINARY POINT TEMPS/POPS... Austin Camp Mabry 89 75 90 76 / 20 20 10 0 Austin Bergstrom Intl Airport 89 76 90 77 / 30 20 10 0 New Braunfels Muni Airport 89 75 90 75 / 20 10 10 0 Burnet Muni Airport 87 73 89 75 / 20 30 10 0 Del Rio Intl Airport 92 76 96 77 / 10 0 0 0 Georgetown Muni Airport 88 75 90 76 / 30 30 10 0 Hondo Muni Airport 89 75 90 75 / 10 20 10 0 San Marcos Muni Airport 89 75 90 75 / 20 10 10 0 La Grange - Fayette Regional 87 76 88 76 / 40 10 20 0 San Antonio Intl Airport 90 76 90 77 / 10 20 0 0 Stinson Muni Airport 90 76 91 76 / 10 20 0 0 && .EWX WATCHES/WARNINGS/ADVISORIES... None. && $$ SHORT TERM...Tran LONG TERM....Tran AVIATION...18