2023-09-18T21:52:55.0000Z38.827499-122.8558352.52manualconfirmedIRIS0.69Md1Origin/20230918215642.944932.598332Magnitude/20230918215642.944984.598333IRISNORTHERN CALIFORNIAregion nameNEIC PDEcatalognc73938581contributorID