Tropical Storm Allison

AFP - Authorities on Saturday warned residents displaced by a killer hurricane that its devastation was far from over, as Florence dumped "epic amounts of rainfall" across the southeastern United States, bringing catastrophic flooding and up to 13 deaths.

Floodwaters from Tropical Storm Harvey are likely to rise as more torrential rain pounds the U.S. Gulf Coast, where at least eight people have already been killed in Texas and tens of thousands driven from their homes, officials have said.

More than 30,000 people will need shelter as a result of the unrelenting rains and flooding of Tropical Storm Harvey overwhelming Texas, reported USA Today. 

By the time Hurricane Harvey was downgraded to a Category 1 storm early Saturday, it had already delivered a 1-2 punch to the Gulf Coast of Texas, making landfall twice, with powerful wind gusts and the threat of catastrophic flooding.

It was still threatening to be the most powerful storm to hit the Lone Star State in more than a decade.