“…(3) partnerships with federal, state, and local agencies to exchange environmental data and information were formed; (4) computer scientists also developed a GIS visualization platform to receive these kinds of data; (5) people were hired to work in the monitoring room and to be part of the decisionmaking process in the warning chain, which also includes civil protection units at the federal, state, and municipal levels, as well as at-risk communities; (6) protocols for this warning chain were also necessary, especially because the roles and responsibilities of the organizations were not clear-the competition between governmental agencies (Lund 2006) was real; and (7) capacity building tutorials and educational materials on warning system implementation at local level were recognized as important, but there is no consensus about who is responsible for engaging people in warning system. Many of these steps and tasks were recommended in the warning system checklists published by the United Nations International Strategy for Disaster Reduction (UNISDR 2006a) and the World Meteorological Organization (WMO 2018); some barriers for their implementation were sporadically researched using questionnaires and interviews (Lumbroso et al 2016;Horita et al 2017Horita et al , 2018, but not the everyday practices and discourses of warning implementation during a period of time, as institutional ethnography permits. This article contributes to this debate, providing insights about the means of implementation of warning systems (Zia and Wagner 2015).…”