A natural disaster is any hazard that occurs naturally and not an act brought on by a human being. Natural disasters include earthquakes, volcanoes, floods, hurricanes, tornadoes, landslides, typhoons, wild fires, etc. To be classified as a disaster the event will have a profound environmental effect and/or human loss.
Determining which natural disaster has had the most impact on people is very hard considering all the possible ramifications of a natural disaster. There are many different ways to measure a natural disaster so it can be very subjective and perhaps impossible to identify which disaster is the worst. However, here is a list of the 10 deadliest natural disasters and the approximate death tolls:
For great information about what you should try to take with you in the event of a natural disaster please take time to read the following article: What to Take With You in a Natural Disaster.