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

More than a week after deadly floods struck Central Texas, search and rescue teams are continuing to probe debris for those still missing.

KERRVILLE, Texas – The Lone Star State continues to grapple with a heartbreaking series of events. Just over a week after the initial catastrophic and deadly deluges, heavy rains and devastating flash floods have returned, pounding Texas once more.

Responders from six Alabama cities are part of the teams that will help search for about 170 people still believed to be missing.

On the night the deadly floodwaters raged down the Guadalupe River in Texas, the National Weather Service forecast office in Austin/San Antonio was missing a key member of its team: the warning coordination meteorologist,

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

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

President Donald Trump is touring the devastation left by flash flooding in central Texas amid growing questions about how local officials responded to the crisis as well as questions about the federal response -- including the fate of the Federal Emergency Management Agency -- that he has so far avoided.