2026-06-21T19:18:36.34Z40.297832489014-124.3836669921915.60000038147manualconfirmedUSGS1.81md1Origin/20260621192032.263087.39667Magnitude/20260621192032.263147.39668USGS9 km WSW of Petrolia, CAregion namenccatalognc75380836contributorID