In December 2008 , continuing into January 2009 , more than 500 quakes were detected under the northwest end of Yellowstone Lake over a seven-day span , with the largest registering a magnitude of 3.9 . Another swarm started in January 2010 , after the Haiti earthquake and before the Chile earthquake . With 1,620 small earthquakes between January 17 , 2010 , and February 1 , 2010 , this swarm was the second-largest ever recorded in the Yellowstone Caldera . The largest of these shocks was a magnitude 3.8 that occurred on January 21 , 2010 . This swarm reached the background levels by February 21 . On March 30 , 2014 , at 6:34 AM MST , a magnitude 4.8 earthquake struck Yellowstone , the largest recorded there since February 1980 . In February 2018 , more than 300 earthquakes occurred , with the largest being a magnitude 2.9
Haiti earthquake
2010 Haiti earthquake
Yellowstone Caldera