The death toll from sudden floods in the Texas Hill Country rose to 24 Friday night, officials said, as the search for more than 20 people missing from a girls summer camp continued through the night.

The fast-moving waters along the Guadalupe River rose 26 feet in just 45 minutes before dawn Friday, washing away homes and vehicles.

Authorities stressed that the situation was still developing and that the death toll could change, with rescue operations ongoing.