Location: 3 km NE of Fremont, California Period: 21 Jul 2015 09:41:14 - 22 Jul 2015 12:25:29 (1 day 2 hours 44 minutes) Volcanoes in 100km radius: None Earthquakes: 28 1 swarms found nearby. 2008 S20080321.1(14.6km) 20 Mar 1 day 11 hours 40 earthquakes