The researchers from Arizona State University have analyzed the minerals found in the fossilized ash taken out from the latest mega-eruption. Until now, the magazine reported, geologists had thought it would take centuries for the supervolcano to make the transition.
In fact, some of the park's most popular attractions, like the Old Faithful geyser and the Grand Prismatic Spring, are actually signs that an enormous magma reservoir is roaring underground.
Furthermore, a 2011 study found that the ground above the magma reservoir in Yellowstone had bulged by roughly 10 inches in seven years, per National Geographic. According to researchers, the super eruption use to scar the planet in every 100000 years.
"It's an extraordinary uplift, because it covers such a large area and the rates are so high", Bob Smith, a Yellowstone expert at the University of Utah, told National Geographic at the time.
The supervolcano is hiding underneath the Yellowstone National Park, which is a secret natural force that has potentials to cover the United States in to ash and transform the world in to the volcanic winter.
'We expected that there might be processes happening over thousands of years preceding the eruption, ' said Christy Tillat Arizona State, in an interview with the New York Times.
According to The Times, Shamloo later analyzed crystals from the team's dig that recorded changes in temperature, pressure and water content beneath the volcano - much like a set of tree rings.
The pair also presented an earlier version of their study at a 2016 meeting of the American Geophysical Union.
"It's shocking how little time is required to take a volcanic system from being quiet and sitting there to the edge of an eruption", she told the NY Times, noting more research is necessary before a definitive conclusion can be reached.