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,

Over 130 people have died after heavy rain pounded Kerr County, Texas, early Friday, leading to "catastrophic" flooding, the sheriff said.

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