2023-09-16T09:10:17.0000Z40.225167-121.1558332.04manualconfirmedIRIS1.77Md1Origin/20230918173930.008149.596324Magnitude/20230918173930.008202.596325IRISNORTHERN CALIFORNIAregion nameNEIC PDEcatalognc73937421contributorID