Young campers and a dad saving his family were among the dozens killed in the historic flash floods that tore through central Texas over the holiday weekend.

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

Officials in Kerr County, where the majority of the deaths from the July 4 flash floods occurred, have yet to detail what actions they took in the early hours of the disaster.

Malaya Grace Hammond is among the latest fatalities identified from the Texas floods. Hammond's family said she was swept away by floodwaters on Saturday in Travis County.

The threat of heavy rain is “slight” for this weekend, but with the ground fully saturated in Kerr County even small amounts of rainfall could cause flooding.

"The first lady and I are here in Texas to express the love and support and the anguish of our entire nation in the aftermath of this really horrific and deadly flood," Trump said as he spoke at a roundtable event with first responders and local officials.

It is hard to look at the heartbreak of the disaster in Texas. In Colorado past flash floods have brought similar heartache and similar threats.

Scholars and designers of early warning systems say that there are still huge gaps in our ability to predict flash floods and warn those at risk.