Months worth of heavy rain fell in a matter of hours on Texas Hill Country, Kerr County Sheriff Larry Leitha said.

Texas parents frantically posted photos of their young daughters on social media with pleas for information as more than 20 campers from an all-girls summer camp were unaccounted for Friday after floods tore through the state's south-central region overnight.

At least 20 girls are missing from an all-girls Christian summer camp in South Texas after catastrophic floods struck the area in the wake of severe overnight storms.