This study focuses on residents’ behavior when choosing a shelter during Typhoon 1919 (Hagibis). A questionnaire survey was conducted in Inogata, Komae City, where an evacuation recommendation was issued due to the rise in the water level of the Tama-gawa River. Approximately 40% of respondents evacuated. Of those who evacuated, 55% chose designated shelters and 29% chose a relative or friend’s house. If the designated shelter was full, less than 10% moved to a second shelter. Instead, many gave up evacuation. The reason and timing of evacuation varied according to the type of shelter.