2023-08-31T22:40:12.0000Z38.778667-122.7665021manualconfirmedIRIS1.53Md1Origin/20230831224238.897914.472921Magnitude/20230831224238.897964.472922IRISNORTHERN CALIFORNIAregion nameNEIC PDEcatalognc73931471contributorID