2026-02-27T13:52:50.05Z37.7910003662109-122.2249984741213.94000005722046manualconfirmedUSGS1.15md1Origin/20260227135446.581271.78033Magnitude/20260227135446.58133.78034USGS1 km SSE of Oakland, CAregion namenccatalognc75319747contributorID