Location: 138 km S of Severo-Kuril’sk, Russia Period: 10 Oct 2018 23:16:02 - 11 Oct 2018 15:08:10 (15 hours 52 minutes) Volcanoes in 100km radius: None Earthquakes: 9 3 swarms found nearby. 2004 PS20041218.1(27.8km) 18 Dec 2 hours 7 earthquakes 2025 PS20250730.1(42.8km) 29 Jul 1 day 7 hours 16 earthquakes PS20250804.1(32.5km) 3 Aug 22 hours 5 earthquakes