2023-12-18T05:42:18.0000Z38.803833-122.8213351.91manualconfirmedIRIS1.31Md1Origin/20231218054519.531905.16555Magnitude/20231218054519.531958.16556IRISNORTHERN CALIFORNIAregion nameNEIC PDEcatalognc73977646contributorID