A swift-moving flood that swept through the Hill Country of Texas on Friday, killing at least 32 people and leaving many more missing, was a flash flood.

Flash floods devastate Texas summer camp leaving children missing as catastrophic flooding hits Camp Mystic and families desperately search

Some 36 hours after the floods, authorities still have not said how many people were missing beyond 27 children from Camp Mystic, a Christian summer camp along a river in Kerr County where most of the dead were recovered.