A research by Utah State University analyzed conditional instability , moisture flux , and circulation features and the results support a persistent increase in conditional instability during the July premonsoon phase , accompanied by increased frequency of heavy rainfall events . The increased convective activity during the premonsoon phase agrees with the projected increase in the intensity of heavy rainfall events over northern Pakistan . Large-scale circulation analysis reveals an upper-level cyclonic anomaly over and to the west of Pakistan – a feature empirically associated with weak monsoon . The analysis also suggests that the anomalous circulation in 2010 is not sporadic but rather is part of a long-term trend that defies the typical linkage of strong monsoons with an anomalous anticyclone in the upper troposphere . An article in the '' New Scientist '' attributed the cause of the exceptional rainfall to " freezing " of the jet stream , a phenomenon that reportedly also caused unprecedented heat waves and wildfires in Russia as well as the 2007 United Kingdom floods
2007 United Kingdom floods
2007 United Kingdom floods
2010 Pakistan floods