2026-09-18T04:39:53.26Z40.294498443604-124.486503601078.6199998855591manualconfirmedUSGS2.61md1Origin/20260918044219.440986.91659Magnitude/20260918044219.441044.91660USGS17 km W of Petrolia, CAregion namenccatalognc75437647contributorID