Dispatch audio has surfaced from the critical hours before a deadly flood hit its height in Kerr County, helping piece together the timeframe local officials have yet to provide amid public scrutiny of their decisions on July 4.

NPR has compiled a timeline of when local, state and federal officials posted warnings on social media as well as the timeline of events as presented by local officials.

The man who said he helped Kerr County implement an emergency alert system in his former role there as information technology director is now calling on top leaders to step down following a flash flood that killed more than 100 people.

A Kerrville-area river authority executed a contract for a flood warning system that would have been used to help with emergency response, local officials said.

It has been four days since catastrophic floodwaters swept through the Texas Hill Country, leaving more than 100 people dead and destroying homes and businesses across multiple counties.

More than 170 people are still believed to be missing a week after the forceful floodwater hit over the July Fourth weekend.

After deadly floodwaters swept through Central Texas, there are questions about the timeline of weather alerts and possible gaps in the warning system.