Eastern Arizona Earthquake - 24 May 2010.
On 24 May 2010, a small magnitude earthquake occurred in eastern Arizona, about 20 miles north-northeast of Clifton, Arizona. Light to weak shaking was reported proximal – within miles – of the epicenter.
Felt events in Eastern Arizona are rare. The last felt earthquakes generated in eastern Arizona were in 1939.
Location Map & Shake Map (source: USGS)