Places recently hit hard -- like Kerrville, Texas, and Burnet, Texas -- are inside this heightened potential for flash flooding, with any heavy rain and flash flooding that occurs over or adjacent to these areas likely to flow downstream via rivers that run through or nearby these devastated areas.

Torrential rain and thunderstorms are expected to threaten much of the eastern and central United States with flash flooding throughout the rest of this week, forecasters warned, as parts of the country,

Here's what to know about the deadly flooding, the colossal weather system that drove it and ongoing efforts to identify victims.