Reconsideration of Evacuation with More Safety Margin from a Case Study of a Crisis Situation Where Everyone Survived Coincidentally: Evacuation Behavior of Residents in Hiraenoki Settlement, Asakura City during the 2017 Northern Kyushu Heavy Rain

Abstract

There are not many studies on evacuation behavior during heavy rainfall disasters from the perspective of examining the evacuation behavior of the entire population of a community and learning lessons from not only cases of casualties but also cases of crisis situations. Therefore, in this study, we conducted a detailed investigation of the case of Hiraenoki Settlement in Asakura City, Fukuoka Prefecture, where all the residents survived the 2017 Northern Kyushu Heavy Rain Disaster, despite suffering severe damage. As a result, we found that many residents were facing a critical situation and only survived by chance, and that measures to encourage evacuation with a greater margin of safety are needed.