Officials balked at the cost for installing a siren warning system and the potential for sirens to blare in the middle of the night and wake up

One of the worst floods in a Texas rivers' history left dozens dead over the Independence Day weekend. What to know about flash flooding and warnings.

Flash flooding is common enough around the crescent-shaped region from Dallas through the Hill Country, the area earned the nickname "Flash Flood Alley."

Officials in Kerr County, Texas — where 27 campers and counselors at a Christian summer camp were killed in catastrophic flooding — had discussed installing a flood warning system

Walston drove from his home to the Center Point Bridge on FM 480 near Highway 27, where he shot video of the river below. He recorded nearly 38 minutes of surging water as it rose over 20 feet, carrying massive cypress trees, debris and even a house.

Just within the last 3 to 6 hours, the National Weather Service reports south central Kerr County has received between 5 to 10 inches of rain, prompting a flash flood emergency until 7 a.m. Friday, July 4.

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

Fox News correspondent Garrett Tenney reports on President Donald Trump and first lady Melania Trump’s visit to Texas on ‘Special Report’.