2026-09-08T15:33:33.97Z40.372001647949-124.2939987182630.879999160767manualconfirmedUSGS1.7md1Origin/20260908153605.234236.24220Magnitude/20260908153605.234296.24221USGS5 km N of Petrolia, CAregion namenccatalognc75431747contributorID