Abstract:The main characteristics of the general atmospheric circulation in March 2019 are as follows. There was one polar vortex center in the Northern Hemisphere, stronger than usual. The circulation in Eurasian middle-high latitudes showed a three-wave pattern. The East Asia trough was to the east of its normal, with a slightly weaker intensity, which made the weak cold air frequently affect China along an eastward path. The strength of Western Pacific subtropical high was stronger than in normal years. And the south branch trough was a little weaker than normal. The short-wave was active, and interacted with the cold air from east, leading to more rain in South China and south of the Yangtze River than normal years. The monthly mean temperature was 5.6℃, 1.5℃ higher than normal. The monthly mean precipitation amount was 30.0 mm, almost equal to normal. One wave of strong cold air process and seven rainfall processes occurred during this month. One dust weather event happened in the northern part of China. The severe convection weather happened frequently, and Jiangxi, Guangdong, Hunan, and Guangxi were hit by severe thunderstorms and hails.