2025-12-07T23:56:39.86Z37.5540008544922-121.6796646118164.84999990463257manualconfirmedUSGS1.87md1Origin/20251207235820.525306.164975Magnitude/20251207235820.525358.164976USGS16 km SSE of Livermore, CAregion namenccatalognc75276106contributorID