Flash Flood in Williamson County, Texas

Flash Flood May 19, 2026 – May 20, 2026 · Williamson County, Texas

Where the report was made, with tornadoes recorded within 15 miles over the years.

What the National Weather Service wrote

Heavy rain from thunderstorms and the resulting flooding resulted in high water rescues on the 700 block of East Main and the 1100 block of CR 229 in Florence.

The wider storm

A slow southward-moving cold front tracked into South-Central Texas, producing a line of strong to severe thunderstorms which advanced ahead of the front as it encountered a moist and unstable airmass on the evening of May 19 into the early hours of May 20. The storms produced swaths of severe winds and some large hail. Locally heavy rain that led to some flash flooding mainly north of the Austin area and in the Hill Country.

Began near Florence (30.8562, -97.8197).

Source: NOAA Storm Events Database, event 1335071. Narratives are written by the National Weather Service forecast office that issued the report.

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