2026-10-01T15:19:04.82Z34.156666666667-117.574666666678.49manualconfirmedUSGS1.16ml1Origin/20261001152330.788155.59682Magnitude/20261001152330.788233.59683USGS4 km N of Rancho Cucamonga, CAregion namecicatalogci41341671contributorID