Location: Izu Islands, Japan region Period: 4 Oct 2023 04:55:47 - 4 Oct 2023 23:47:20 (18 hours 51 minutes) Volcanoes in 100km radius: None Earthquakes: 6 1 swarms found nearby. 2015 PS20150511.1(34.5km) 10 May 8 hours 5 earthquakes