With funding assistance from the Federal Emergency Management Agency, the MBMG has developed this application to illustrate earthquake locations and magnitudes, significant historic earthquakes, potentially active faults, and seismic hazard levels. The MBMG’s purpose is to improve people’s understanding of where Montana is seismically active and make it easy for viewers to compare where they live to seismic activity.

The earthquake locations are derived from seismic data recorded by the Montana regional seismograph network since January 1, 1982. This earthquake database is currently updated at the end of each month so the most recent activity is not portrayed. You can view locations and other data for earthquakes that are less than one month old by visiting the United States Geological Survey (link leaves our site).