Location: Izu Islands, Japan region Period: 10 May 2015 16:54:42 - 11 May 2015 01:12:22 (8 hours 17 minutes) Volcanoes in 100km radius: None Earthquakes: 5 1 swarms found nearby. 2023 PS20231004.1(34.5km) 4 Oct 18 hours 6 earthquakes