Record-breaking rainfall associated with Typhoon Hagibis (Typhoon No.19) in October 2019 caused extensive damage over a wide area in eastern Japan. In Higashi-Matsuyama City, (Saitama, Japan), rivers overflowed, damaging a total of 770 homes. In addition, issues in realizing safe evacuation, such as delays in evacuation and insufficient capacity of evacuation shelters (including parking lots), were brought to light. The objective of this study is to determine what factors help achieve safe evacuation. In this study, a questionnaire survey on evacuation behavior was conducted, and a model analysis was conducted on whether or not horizontal evacuation was implemented and the timing of the implementation of evacuation, respectively. It was suggested that recognition of the risk of disaster in one's home leads to early implementation of evacuation actions.