Late Sunday night, three earthquakes rattled central Arizona, including Phoenix and environs. The three temblors, magnitude (M) 3.2, M 4.1 and M 4.0, occurred approximately 3- to 11- miles north of Black Canyon City – see attached figure. The largest event, an M 4.1, occurred at 11:20 p.m. The earthquake(s) were felt from north of Flagstaff to south of Casa Grande, including most of central Arizona. The U.S. Geological Survey initially located the epicenters and depth to focus. Using 15 … [Read more...] about Earthquakes Shake Central Arizona