2026-08-29T17:12:32.17Z40.453666687012-125.1731643676822.85000038147manualconfirmedUSGS2.94md1Origin/20260829172153.733094.35812Magnitude/20260829172153.73313.35813USGS77 km W of Petrolia, CAregion namenccatalognc75426827contributorID