Abstract
In order to make clear the awareness in evacuation behavior in Hokusatsu heavy rain disaster, we conducted a questionnaire survey. The questionnaires were distributed to local sections where many rescuees reside, and the answers were analyzed by regarding the rescuees as the persons who could not determine an adequate behavior in a risky situation. As a result, it was clarified that many rescuees did not evacuate because of the action of normalcy bias and cognitive dissonance. In addition a possibility was suggested that the evacuation information for disaster might not be understood sufficiently by some residents and that it might delay the timing of evacuation.