Location: 5 km SW of Ridgemark, California Period: 8 Sep 2006 18:54:51 - 10 Sep 2006 18:54:15 (1 day 23 hours 59 minutes) Volcanoes in 100km radius: None Earthquakes: 63 1 swarms found nearby. 2011 S20110112.1(11.1km) 12 Jan 4 days 12 hours 66 earthquakes