Location: 4km NW of Glen Avon, CA Period: 30 May 2019 15:11:53 - 19 Jun 2019 20:14:25 (20 days 5 hours 2 minutes) Volcanoes in 100km radius: None Earthquakes: 1003 5 swarms found nearby. 2005 S20050107.1(9.4km) 6 Jan 2 days 11 hours 30 earthquakes 2019 S20190627.1(0.9km) 26 Jun 6 days 15 hours 93 earthquakes S20190829.1(4.1km) 28 Aug 4 days 15 hours 69 earthquakes 2024 S20240907.1(8.7km) 7 Sep 1 day 8 hours 40 earthquakes 2025 S20250801.2(13.2km) 31 Jul 1 day 5 hours 30 earthquakes