The emergency weather alert had come early Fourth of July morning: There would be life-threatening flash flooding in Kerr County, Texas.

At least 161 are still unaccounted for after the July Fourth floods that saw the waters of the Guadalupe rise to historic levels in Central Texas, officials with Kerr County said Friday. Authorities have confirmed 103 deaths, 36 of whom are children.

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

The number of fatalities connected to the Kerr County floods has risen to 75, local officials said Monday as search and rescue efforts continue and Camp Mystic grieved ”the loss of 27 campers and counselors”.

People awoke from water rushing around them during the early morning hours of July 4, all along the Guadalupe River in the Texas Hill Country. Residents were seemingly caught off guard, but warnings had been issued days and hours before floodwaters began carrying away homes,

Texas Rep. Chip Roy revealed Sunday that the supposedly harrowing tale of survival of two girls who clung to a tree until they were rescued from the floods was a false report.

The claim circulated as rescuers searched for people missing from Camp Mystic, a Christian girls summer camp on the banks of the Guadalupe River.

Photos of Camp Mystic and other areas along the Guadalupe River shows the devastating aftermath of the Fourth of July floods in Texas.