2026-05-31T09:40:21.08Z40.321334838867-124.4469985961930.430000305176manualconfirmedUSGS1.95md1Origin/20260531094238.676732.17121Magnitude/20260531094238.676802.17122USGS14 km W of Petrolia, CAregion namenccatalognc75368661contributorID