AccuWeather said the private forecasting company and the National Weather Service sent warnings about potential flash flooding hours before the devastation.

At least 27 people died after Friday's flash flood in Kerr County, according to county and state leaders. It's unclear how many people are still missing.

A t least 24 people are dead after heavy rain pounded Kerr County, Texas, on Friday, leading to "catastrophic" flooding, the sheriff said. Children are among the dead, said Lt. Gov. Dan Patrick, who has taken on the duties of acting governor.