Location: off the east coast of Honshu, Japan Period: 25 Oct 2013 17:10:19 - 25 Oct 2013 21:27:34 (4 hours 17 minutes) Volcanoes in 100km radius: None Earthquakes: 6 2 swarms found nearby. 2011 PS20110315.2(90.2km) 15 Mar 1 day 17 hours 6 earthquakes PS20110325.1(97.9km) 24 Mar 20 hours 6 earthquakes