The map above represents earthquakes of magnitiude 2.5 or intensity III and above that have occured in Wyoming from 1871 to present. As can be seen, historic earthquakes have occurred in every county in Wyoming.
Damaging earthquakes can occur anywhere in the state.
Magnitude 7.5 events can occur in western Wyoming, magnitude 6.75 events can occur along the northern and southern margins of the Wind River Basin. And magnitude 6.25 to 6.5 events can occur anywhere in the rest of the state. These web pages have been generated for two reasons. The first of these is to increase awareness of earthquakes in Wyoming. The second is to provide citizens with a means to access current earthquake data for the state.