Over just two hours, the Guadalupe River at Comfort, Texas, rose from hip-height to three stories tall, sending water weighing as much as the Empire State building downstream roughly every minute it remained at its crest. The force of floodwater is often more powerful and surprising than people imagine.

Crowds gathered Wednesday at the high school football stadium in Kerrville to sing worship songs and pray for the people who died and remain missing.

President Donald Trump on Thursday expressed support for flood alarms in Texas and said he thinks “everyone’s doing a great job” responding to a disaster that has left more than 100 people dead and 170 people missing.