2025-12-18T20:32:31.53Z38.8188323974609-122.8059997558593.14000010490417manualconfirmedUSGS0.77md1Origin/20251218203413.976976.268075Magnitude/20251218203413.977029.268076USGS6 km NW of The Geysers, CAregion namenccatalognc75282281contributorID