Yellowstone National Park Search Page

Yellowstone is a very seismically active area, with somewhere between 1,500 to 2,000 earthquakes a year. Most of these earthquakes are so small that humans do not feel them. A good portion of Yellowstone sits within a volcano caldera, and Yellowstone is an active volcano. That is why there is all the thermal and geyser activity. It has been this way for thousands of years, with the last major eruption over 70,000 years ago. The links below take you to sites that record and monitor all seismic activity.