Following the M5.3 earthquake, the Arizona Geological Survey became a primary source of information for the people of Duncan.
A magnitude 5.3 earthquake occurred near Duncan, AZ at approximately 10 pm on June 28th, 2014. This was the largest earthquake to occur in southeastern Arizona – southwestern New Mexico in 75 years, and it serves as a reminder that Arizona does indeed have earthquakes and earthquake hazards.
During 2013, the Arizona Geological Survey (AZGS) cataloged over 100 Arizona earthquakes, participated in multiple outreach activities, and acted as resource experts for the seismic source characterization project for the Palo Verde Nuclear Power Plant.
Arizona's Historic Earthquakes - The southwestern part of this state is not far from the San Andreas fault system, and indeed some related fault structures must now underlie this region. Yuma has felt tremors on several occasions from disturbances…
In 2011, 131 instrumentally detected earthquakes were recorded in Arizona. Most of the seismicity occurred in the north-northwest quadrant of the state.
