2026-09-19T01:24:19.5Z40.286834716797-124.4589996337913.39999961853manualconfirmedUSGS2.35md1Origin/20260919012609.599149.98243Magnitude/20260919012609.599208.98244USGS15 km WSW of Petrolia, CAregion namenccatalognc75438132contributorID