Location: 5km NNE of Yorba Linda, CA Period: 29 Jul 2008 18:42:15 - 2 Aug 2008 18:46:07 (4 days 3 minutes) Volcanoes in 100km radius: None Earthquakes: 128 2 swarms found nearby. 2002 S20020903.1(4.2km) 3 Sep 1 day 18 hours 39 earthquakes 2012 S20120808.1(5.7km) 8 Aug 1 day 13 hours 41 earthquakes