Volcano Disaster Preparedness Before a volcanic eruption Prepare an emergency kit and make a family communications plan.Follow evacuation orders issued by authorities.Danger from mudflow increases near waterways and with heavy rain. Mudflows can move very fast, so do not cross any bridge if a mudflow is approaching.Avoid low-lying areas such as valleys and rivers. During a volcanic eruption Listen for emergency information and alerts.Follow evacuation or shelter orders. If advised to evacuate, then do so early.Avoid areas downwind and downstream of the eruption. Rubble and ash will be carried by wind and gravity.Protect yourself from falling ash that can irritate skin and harm your breathing passages and eyes.Do not drive in heavy ash fall. Other useful links: The USGS Volcano Hazards Program includes activity updates, feature stories, information about volcano hazards and resources.Download FEMA's Volcano Info Sheet to learn more about staying safe during an eruption.