Hours before a massive wall of floodwater barreled down a river in the heart of Texas Hill Country before sunrise on Friday, forecasters with the National Weather Service warned people that dangerous conditions were brewing.

U.S. President Trump and the First Lady are visiting Texas Friday, a week after a deadly flood in Keer county and other parts of the region. Trump has expressed support for flood alarms in Texas as angry voices grow over what could have been done to prevent a disaster that sees the death toll continuing to rise.