Synoptic analysis of climate risks in Yasouj municipality, Case Study: Heavy rain of 11 march 2011

Yasouj region is one of the areas with high precipitation that every year، semi-heavy and heavy rainfall in this area is great. This study has tried to analyze the data at the upper levels of the atmosphere at sea level، 250، 300، 500، 600، 700، 850، 925، 1000hPa climate، heavy rainfall causes loss Yasouj be identified، dated 11/03/2011. Precipitation is essential not only in human life but also in lives of plants and animals and inseparable part of nature is considered. But this is a natural phenomenon that can be as valuable in the peak value as an important is natural hazard risk to human life، flora and fauna. Torrential rainfall that originates from a sudden event that every year the rate of damaging is too severe to be endured in lives and treasure. Iran is one of the world''s dangerous zones that flood is considered as one of the most dangerous phenomenon all year، severe damage to human lives and property and the nature of the marks، especially in recent years sought to exploit human nature and the potential for environmental damage this event has become one of the biggest risk in Iran.