2026-04-16T00:27:45.57Z40.292331695557-124.0403366088923.170000076294manualconfirmedUSGS2.48md1Origin/20260416002958.503704.4091Magnitude/20260416002958.503765.4092USGS21 km E of Petrolia, CAregion namenccatalognc75345547contributorID