There are reports some cloud seeding occurred a few days before the Texas flash flood. But it’s important to understand that cloud seeding has a relatively short-term effect in that a certain cloud is seeded and perhaps turns into one individual rain cloud or even a thunderstorm. The increased rainfall would not last for days.

The record of frequent, often deadly floods in Central Texas goes back more than 200 years to July 1819, when floodwaters spilled into the major plazas of San Antonio. That city on the edge of the Hill Country was hit by major floods again in 1913, 1921, 1998 and 2025, to cite a few examples.