2026-10-30T13:56:44.49Z40.299499511719-124.62583160412.859999656677manualconfirmedUSGS2.9md1Origin/20261030135820.367554.160085Magnitude/20261030135820.367616.160086USGS29 km W of Petrolia, CAregion namenccatalognc75459827contributorID