We get a lot of earthquakes in Wyoming. Most are near the very seismically active area near Yellowstone. That's why it was a bit of a surprise to learn that an earthquake just occurred in southern Wyoming near Saratoga.
On August 17, 1959 an earthquake measured 7.3-7.5 on the Richter scale at Yellowstone National Park. The tragic event caused over 28 deaths and $11 million in damage between Wyoming and Montana communities.