Defining public warning failure

Public warning failure is an undertheorized concept. A shared definition of public warning failure is needed to help stakeholders assess responsibility in the aftermath of government nonuse, misuse, or misunderstanding of public warning systems, especially mobile device-based systems that have become a critical element of the public warning ecosystem. Although some uncertainty in the disaster information environment is inevitable, a shared definition of public warning failure could help clarify the roles and responsibilities of government officials and agencies across the arc of disaster communication: public preparation, hazard detection, warning message creation, message dissemination, and public response monitoring. In the context of earthquake early warning system performance, warning failure has been defined as false alert, missed alert, inaccurate alert, no alert, and late alert. Building upon this typology, in this essay, we propose an all-hazards definition of public warning failure, illustrate it using a conceptual model, and assess the conceptual model using examples drawn from media reporting.