The following are the main characteristics of the general atmospheric circulation in June 2011. There was one weak polar vortex center in the Northern Hemisphere. The West Pacific subtropical high is stronger than normal years. In middlehigh latitudes, the zonal circulation is considered as the main characteristics. The monsoon trough is slightly weaker than normal years. The monthly mean precipitation is 102.8 mm, and is 5.9% more than normal. The monthly mean temperature is 20.5℃, and is 1.0℃ higher than normal (19.5℃). The main weather events in June were rainstorm and flooding occurring at the middle and lower reaches of the Changjiang River, South China, etc. There were three tropical cyclones generated and made landfall in China. Extreme high temperature weather occurred in HuangHuai plain, etc. In east of Northwest China, North China, etc., droughts continued until the last ten days of the month. The gale and hail storm disasters happened in 23 provinces (regions, municipalities) in China.