For the first time in decades, all 120 Kentucky counties are under flood or flash flood warnings as torrential rains from a series of brutal thunderstorms batters the region

A potent storm that already plunged parts of California underwater has started to deal a serious blow to the eastern half of the US with flooding rain, severe thunderstorms, tornadoes, snow and ice all expected.

Millions of Americans are in the path of a storm that is hitting parts of Tennessee, Kentucky and Virginia the hardest, with rainfall reaching several inches.

Major storm system slams the Eastern US, bringing catastrophic flash flooding to Kentucky, Virginia, and Tennessee. Watch shocking footage of submerged roads, ongoing rescues, and communities devastated by the deluge.