The president is expected to do an aerial tour of some of the hard-hit areas, a relatively common practice that allows presidents to visit disaster sites and hopefully ease logistical burdens for authorities on the ground.

By Associated Press

The officials spoke only hours after the operators of Camp Mystic, a century-old all-girls Christian summer camp in the Texas Hill Country, announced that they lost 27 campers and counselors to the floodwaters.

By Jim Vertuno, Nadia Lathan, John Seewer, Associated Press