2026-10-15T10:37:57.87Z40.416500091553-125.1494979858410.659999847412manualconfirmedUSGS3.16md1Origin/20261015104025.130524.56608Magnitude/20261015104025.130587.56609USGS74 km W of Petrolia, CAregion namenccatalognc75449796contributorID