2026-09-01T01:07:07.84Z40.287998199463-124.5478363037120.479999542236manualconfirmedUSGS2.49md1Origin/20260901010911.741956.49090Magnitude/20260901010911.742019.49091USGS23 km W of Petrolia, CAregion namenccatalognc75428002contributorID