The conditions are life threatening and could flood creeks, streams, streets, highways, underpasses and "urban areas," according to the NWS.

Here's what to know about the deadly flooding, the colossal weather system that drove it and ongoing efforts to identify victims.

Search crews continued the grueling task of recovering the missing as more potential flash flooding threatened Texas Hill Country.

The Texas Hill Country has been notorious for flash floods caused by the Guadalupe River. Here's why the area is called "Flash Flood Alley."

After hearing a young woman scream for her life on the flooded Guadalupe River, Carl Jeter called first responders to rescue her after she tread water for 15 miles.

The organizations working together to help the flood victims said that 'no additional in-kind donations (clothing, food, supplies) are needed in Kerrville.' They said the best way to help is with monetary donations.

Torrential rain flooded creeks, streams and the Guadalupe River, where the water swelled more than 26 feet in 45 minutes.

With more than 170 still missing, communities must reconcile how to pick up the pieces around a waterway that remains both a wellspring and a looming menace.

This part of Texas Hill Country is known for flash floods. Why were so many people caught off guard when the river turned violent?