When did the snowstorm happen?

There was a snowstorm in China in 2008.

The snowstorm in South China in 2008 refers to the natural disasters such as low temperature, freezing rain and snow that have occurred in China since June 38, 2008. China, Shanghai, Jiangsu, Zhejiang, Anhui, Jiangxi, Henan, Hubei, Hunan, Guangdong, Guangxi, Chongqing, Sichuan, Guizhou, Yunnan, Shaanxi, Gansu, Qinghai, Ningxia, Xinjiang and other 20 provinces (autonomous regions and municipalities) are all affected by low temperature rain, snow and freezing disasters to varying degrees.

Extended data:

The cause of the snowstorm:

The main reason for the formation of a large-scale rain and snow weather process is the abnormal atmospheric circulation, especially the abnormal flow of Eurasian balloon. As we all know, the atmospheric circulation has its own operating rules and keeps a stable circulation state for a certain period of time. There is a low-value system in the southwest of Qinghai-Tibet Plateau, while Siberia maintains a relatively high-value system, namely, meteorological low-pressure system and high-pressure system.

These two systems have existed in these two areas for a long time, and the low-pressure system has brought abundant precipitation to the southern part of China, mainly in the southern sea and the Indian Ocean. Cold high pressure from Siberia pushes cold air to the south. Obviously, under normal circumstances, cold air from Siberia is the main controlling factor in winter, which makes most parts of China dry and cold.

In some special years, such as 2008, due to the abnormal climate (influenced by La Nina phenomenon), the warm and humid airflow in the southwest affected most parts of China, while the high-pressure system in the north existed stably, constantly transporting cold air from Siberia to the south;

Cold air and warm air meet in the middle and lower reaches of the Yangtze River and the south. The density of cold air is relatively large, so warm air will slide up along the cold air layer, so the rich moisture carried by warm and humid air will condense, forming rain and snow weather.

Due to the unusually long-term intersection of cold and warm air in this area, the rainy and snowy weather in southern China lasts for a long time.

Baidu Encyclopedia-Snow Disaster in China in 2008