Horrifying Storm Footage Depicts 'Cloud Tsunamis'

“Cloud tsunamis” have been sweeping across the sky and thanks to mobile phones we've finally been able to capture these scary and impressive acts of nature on our cameras.

These ‘tsunamis’ are widely known as shelf clouds. They're several kilometers long and span across the sky. These mighty formations are as scary and dangerous as they're beautiful, known to be accompanied with heavy rainfall, flash flooding, gale-force winds, and large hailstones.

These ‘tsunamis’ are widely known as shelf clouds. They're several kilometers long and span across the sky. These mighty formations are as scary and dangerous as they're beautiful, known to be accompanied with heavy rainfall, flash flooding, gale-force winds, and large hailstones.

Shelf clouds are made by a cold outflow from a thunderstorm lifting the moist air very abruptly.

To see how they look like, take a look at the following spectacular video: