Nearly a decade ago, neighboring counties, Guadalupe and Comal, installed flood sirens. Nearby New Braunfels regularly tests its outdoor warning system, which is designed to alert residents to flash floods that are common in the area. But in Kerr County, officials admitted over the weekend that no such system exists.

Kerr County, Texas Judge Rob Kelly told a reporter that the county does not have a warning system, saying that "no one knew this kind of flood was coming."

The heavy rain that turned a river in Texas into a raging wall of water was fueled by unique atmospheric conditions, according to meteorologists and climate scientists.

The Guadalupe River near Kerrville swelled to its second highest height on record. A stark reminder of life in a warming world.

Today we look at the continued fall out of flash floods in Texas where at least 91 people have died. Search efforts continue for a fourth day for dozens of people still missing, authorities say. Camp Mystic,

President Donald Trump announced that he signed a disaster declaration for Kerr County, Texas, where flash floods have killed scores of people. Trump said families of victims were experiencing "unimaginable tragedy.