2020-12-21T19:15:31.0000Z38.811501-122.8154982.76manualconfirmedIRIS0.55Md1Origin/20201221191858.300016.102005Magnitude/20201221191858.300075.102006IRISNORTHERN CALIFORNIAregion nameNEIC PDEcatalognc73501195contributorID