Sisters Blair Harber, 13, and Brooke Harber, 11, were killed, along with their grandparents, when surging floodwaters ripped through the community. Their parents were staying in a different home at Casa Bonita and survived, according to the family's GoFundMe.

More than 111 people have died across six counties after flash flooding from heavy rain began affecting the state last week.

After catastrophic floods hit Texas' Hill Country, many are asking about preparations for the next big flood. Jason Allen spoke to Jay Banner, climatologist at University of Texas at Austin, on the banks of the Guadalupe River.

Flash floods surged through in the middle of the night, but many local officials appeared unaware of the unfolding catastrophe, initially leaving people near the river on their own.

Renee Smajstrla, a 8-year-old straight-A student from Ingram, Texas, who had played a role in her school’s production of “The Wizard of Oz,” was one of the victims who died in the flash floods at Camp Mystic, her family said.

Viral posts promoted false claims that cloud seeding, a form of weather modification, played a role in the devastation. Meteorologists explain it doesn't work that way.

When the precipitation intensified in the early morning hours Friday, many people failed to receive or respond to flood warnings at riverside campsites known to be in the floodplain.

At least 27 campers and counselors at Camp Mystic perished in Friday's floods, with the total death toll in the floods now surpassing 100.