2026-07-17T12:39:32.5Z40.258666992188-124.3694992065416.940000534058manualconfirmedUSGS2.56md1Origin/20260717124204.154013.138313Magnitude/20260717124204.154081.138314USGS10 km SW of Petrolia, CAregion namenccatalognc75397636contributorID