2026-09-21T05:18:00.07Z37.640167236328-121.6813354492210.199999809265manualconfirmedUSGS1.96md1Origin/20260921051959.912501.111519Magnitude/20260921051959.912566.111520USGS9 km ESE of Livermore, CAregion namenccatalognc75439302contributorID