Changes in Recommended Evacuation Actions Using Probabilistic Debris-Flow Hazard Maps

Key Points

• The aim is to evaluate how probabilistic debris-flow hazard maps can influence evacuation actions and recommendations.
• Developed probabilistic hazard maps based on rainfall and terrain data.
• Estimated disaster probabilities for houses, shelters, and routes.
• Automated selection of optimal evacuation actions based on minimal disaster probabilities.
• Probabilistic information significantly reduces the number of houses recommended for evacuation.
• Evacuation actions become more rational and individualized according to house locations and route safety.