textproduct: Austin/San Antonio

KEY MESSAGES

- Strong to severe thunderstorms and heavy rain threats continue on today into Friday.

- Dry and cooler over the weekend with a warming trend into the middle of next week.

SHORT TERM

(Today through Friday) Issued at 126 AM CDT Thu Apr 30 2026

A low amplitude upper level ridge has the flow over Texas nearly zonal again tonight. A cold front is stretched across our CWA from Hallettsville to Pleasanton to Del Rio. Ahead of the front winds are from the southeast and behind the front they are from the north to northeast. The airmass remains warm and moist south of the front with cooler and drier air behind it. An upper trough will move across northern Mexico during the the short term period gradually turning the flow from westerly to southwesterly. The front will stall somewhere around our southern border today. This will mean additional chances for showers and thunderstorms during the day today with better chances across the northern counties. Tonight the upper trough will move across TX bringing widespread chances for showers and thunderstorms. Deep moisture will surge in ahead of the trough increasing PW values leading to the potential for locally heavy rain tonight into Friday. Friday afternoon winds will shift to north-northeasterly bringing a more stable airmass to the region. Cooler air will move in with highs mostly in the 60s.

LONG TERM

(Friday night through Wednesday) Issued at 126 AM CDT Thu Apr 30 2026

There may some lingering showers or storms over the east Friday evening. All of the convection should be off to the east by midnight Friday night. Saturday dry weather will return. And along with it, cooler temperatures. Lows Saturday morning will range from the middle 40s over the Southern Edwards Plateau and Hill Country to the middle 50s over the Rio Grande Plains and the Coastal Plains. Highs Saturday will be from the middle 60s to the low 70s. Sunday morning will be a couple of degrees cooler than Saturday and then we will begin to warm back up. Dry weather will continue for the early part of the week with warming temperatures. Highs will be back to well above normal by Tuesday. Wednesday another frontal boundary will bring low rain chances to the east.

AVIATION

(12Z TAFS) Issued at 545 AM CDT Thu Apr 30 2026

A rather messy forecast at area terminals over the next 24-30 hours as showers and thunderstorms, likely in multiple rounds will move through the region. Winds are more north to northeasterly this morning but will shift to more easterly and east- northeasterly by the late morning hours. Have kept PROB30s for TSRA in place and introduced prevailing TSRA after 06Z at AUS, after 07Z at SAT and SSF and after 06Z at DRT. The region will be mostly socked in in MVFR/IFR ceilings, but some breaks may occur at SAT, SSF, and DRT this afternoon before filling back in.

PRELIMINARY POINT TEMPS/POPS

Austin Camp Mabry 77 60 64 53 / 40 90 100 30 Austin Bergstrom Intl Airport 79 61 65 52 / 40 90 100 30 New Braunfels Muni Airport 79 62 66 52 / 30 90 100 20 Burnet Muni Airport 72 56 60 50 / 60 90 100 20 Del Rio Intl Airport 81 66 74 55 / 40 90 90 10 Georgetown Muni Airport 74 58 62 50 / 50 90 100 30 Hondo Muni Airport 82 63 68 51 / 20 90 100 20 San Marcos Muni Airport 79 61 65 52 / 30 90 100 30 La Grange - Fayette Regional 80 63 67 53 / 30 80 100 40 San Antonio Intl Airport 81 63 67 53 / 30 90 100 20 Stinson Muni Airport 83 65 68 54 / 20 80 100 20

EWX WATCHES/WARNINGS/ADVISORIES

None.