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.

At least 70 people are dead in central Texas 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.

Flash flooding is a common occurrence in the Hill Country, but even longtime residents were stunned when the Guadalupe River rose like it did early Friday morning. Ten to 12 inches of rain dumped on Kerr County in a matter of hours, producing more water than the daily flow over Niagara Falls, KSAT in San Antonio reported.