2026-03-15T22:50:30.68Z40.34716796875-124.6396636962919.450000762939manualconfirmedUSGS2.76md1Origin/20260315225239.391116.126002Magnitude/20260315225239.3912.126003USGS30 km W of Petrolia, CAregion namenccatalognc75327902contributorID