At least 81 people are dead and at least 41 more are missing after devastating flash floods slammed Texas Hill Country, with water rescues taking place along the Guadalupe River, which rose rapidly early Friday morning to the height of a two-story building.

Here’s what to know about the deadly flooding, the colossal weather system that drove it in, and around Kerr County, Texas, and ongoing efforts to identify victims.

Hundreds of searchers were combing wide swaths of Central Texas yesterday after severe rainfall caused flash flooding on the Guadalupe River. As the death toll climbed to at least 80, and dozens remained unaccounted for, forecasters warned of more rain and possible flash flooding in hard-hit areas. We have live updates.