A swift-moving flood that swept through the Hill Country of west-central Texas Friday and killed at least 13 was a flash flood

At least 24 people were dead and many missing after torrential rains unleashed flash floods along the Guadalupe River in Texas.

Texas Lieutenant Governor Dan Patrick said authorities were searching for 23 girls listed as unaccounted for among more than 700 children who were at a summer camp when it was swept by floodwaters.