Abstract: Social media is emerging as a communication tool for successfully managing disasters. However, studies have shown that not all individuals are equally predisposed towards effectively using social media for disaster management. There still exists a big digital divide when it comes to using social media for disaster management. Drawing on situational theory of problem solving, we develop a conceptual model that examines the motivating factors for the underserved communities to use social media for disaster management. We further develop and cross-validate a questionnaire instrument to acilitate empirical research. We thus offer an empirical context for motivating individuals from underserved communities to use social media effectively during disasters.