More than 800 earthquakes have now been recorded at the Yellowstone Caldera, a long-dormant supervolcano located in Yellowstone National Park, over the last two weeks - an ominous sign that a potentially catastrophic eruption could be brewing. However, despite earthquakes occurring at a frequency unseen during any period in the past five years, the US Geological Survey says the risk level remains in the “green,” unchanged from its normal levels, according to Newsweek.
The biggest earthquake in this “swarm” - which registered a magnitude of 4.4 – took place on June 15, three days after the rumblings started. That quake was the biggest in the region since a magnitude 4.8 earthquake struck close to Norris Geyser Basin in March 2014. This magnitude 4.4 earthquake was so powerful that people felt it in Bozman Montana, about eight miles away.