The National Weather Service began sending flash flood warnings that should have triggered cellphone alerts a little after 1 a.m., while local officials began posting on Facebook about four hours later.

Flash flooding in Texas Hill Country has triggered one of the largest rescue operations in the state’s history

Janie Hunt was the great-granddaughter of the late American oil baron William Herbet Hunt and a cousin of Clark Hunt, the current owner of the Kansas

Flash floods in Texas have killed more than 100 people, many of them children. Heavy rains fell quickly in the predawn hours Friday in the Texas Hill Country.