2026-05-11T07:25:25.66Z40.333499908447-124.910667419438.6400003433228manualconfirmedUSGS2.57md1Origin/20260511072700.634755.156927Magnitude/20260511072700.634817.156928USGS53 km W of Petrolia, CAregion namenccatalognc75358636contributorID