The world is facing everyday with disasters and emergencies. We all face the risk of the disasters happening and affecting our lifes.Disasters have happened for millions of years and will continue to happen in the future but the frequency of these disasters is increasing every year all around the globe. Many disasters are becoming more dangerous due partly to climate change and their impact increases intensely. These tragic events cause; loss of lives, damage to environment,to the economy , social and cultural life. The research is based on a possible earthquake scenario of 7.5 mw earthquake that can happen in Istanbul.This case is crucial to analyze the risk and the possible impact that the city of Istanbul will face.