A new open-access book on climate disaster preparedness explores extreme events through art and technology and includes a research chapter on communication practices during online participation in extreme events. The study examines the role of digital platforms like social media and messaging apps in preparing individuals and communities for catastrophic climate events before, during, and after the events. The study identifies the importance of local communication networks in emergency responses and disaster preparedness and discusses the changing dynamics of social media use in crises. The chapter also highlights gaps in current research around preparedness and the use of social media for emotional support and community resilience building, suggesting areas for future study.