Radar data can estimate rainfall to a fairly accurate amount. The rain data in the case of the deadly tragedy that unfolded in the Texas Hill Country last weekend shows exactly why the area around Camp Mystic and the Guadalupe River, outside of San Antonio, had such a raging flash flood.

The National Weather Service extended a flood watch July 7 through 7 p.m. local time for much of central Texas.

Central Texas braces for more rain after deadly floods; officials warn of renewed flash flood risk in already saturated areas. Follow Newsweek's live blog.

Heavy rains fell quickly in the predawn hours of Friday in the Texas Hill Country, causing the Gaudalupe River to rise 26 feet in just 45 minutes.

Dozens of volunteers searched for bodies in Hunt, Texas, on July 6 after floods overcame the area days earlier.

A search for Texas flood survivors intensified as Texas Governor Greg Abbott issued a disaster declaration for nearly two dozen Texas counties.

The president confirmed the visit to reporters Monday evening, calling the flooding in Central Texas a "terrible event." Mr. Trump said Sunday that he is planning on going to Central Texas. He said he would have gone Sunday but he would be "in their way,