2023-09-07T01:00:44.0000Z38.8315-122.81551.53manualconfirmedIRIS1.35Md1Origin/20230909001649.441892.530025Magnitude/20230909001649.441958.530026IRISNORTHERN CALIFORNIAregion nameNEIC PDEcatalognc73933946contributorID