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.

In the days after the devastating Texas flash flood, a conspiracy theory quickly arose on whether cloud seeding could have been a factor in the devastation. First reported by the Houston Chronicle, cloud seeding involves releasing silver iodide into clouds to increase rainfall under specific conditions.