Mega Disasters: Yellowstone Super Volcano Eruption. Could it erupt again soon?
The largest active volcano in the world is located below the serene Yellowstone park in the U.S. states of Wyoming, Montana, and Idaho. The Yellowstone supervolcano has erupted 3 times, the first around 2.1 million years ago and the last time roughly 640,000 years ago, each time the explosive force ranged between 700 and 6000 times more powerful than when Mouth St. Helens erupted in May 1980 which is why it has been given the "super" status.
Currently, there are no signs that Yellowstone is about to erupt. With that said it still has to be monitored closely as the supervolcano is believed to have enough power to erupt with a destructive force around 250,000 greater than Mouth St. Helens in 1980. This you will be catastrophic and cover the entire United States in rock/ash and send the entire global into volcanic winter. Pretty scary stuff.