As environmental and societal crises increase in numbers, severity, and urgency, online forums for so-called “doomsday preppers” have seen a concomitant surge in membership. Beginning from the perspective of communicative constitution of organization, we explore the sociotechnical communities that emerge on such forums. Methodologically, we use netnographic observations to show that online prepper communities are organizational, in the sense of being networks of communicative episodes that use common narratives to build identities around material objects and physical practices. However, the online prepper communities do not move from the enactment of organization to acting as organizations. This observation leads us to conceptualize online prepper communities as atomizations whose communicative constitution does not entail a capacity for collective action, but only manifests the similarity of disparate individuals. The communicative constitution of atomization, we argue, is symptomatic of an underlying social logic, which promotes individualized responses to collective problems.