2023-10-02T22:00:11.0000Z39.740667-120.5668333.37manualconfirmedIRIS2.19Md1Origin/20231004084239.947323.708278Magnitude/20231004084239.947375.708279IRISNORTHERN CALIFORNIAregion nameNEIC PDEcatalognc73944746contributorID