Why will there be widespread rainfall in the south before the Spring Festival? What will be the temperature during the Spring Festival in 2021?

What’s going on with the widespread rainfall in the South before the Spring Festival

Since December 2020, the cumulative precipitation in most of South China and southern Jiangnan has been between 10 and 30 mm. 30-50 mm in some areas of central and southern China, less than 10 mm in most of Yunnan; the cumulative precipitation in the above-mentioned areas is 50-80% less than the same period in normal years, including central Guangdong, central Guangxi, central Yunnan and southwestern parts of the country. More than 90%. Affected by the continued lack of rainfall, moderate to severe meteorological drought is currently occurring in southern Jiangnan, southern China and Yunnan. Among them, central and northeastern Guangxi and southern Hunan are experiencing extreme drought.

It is expected that from February 7th to 10th, there will be a heavy rainfall process in southern and eastern Yunnan, southern Guizhou, central and southern Jiangnan, and South China from west to east. There will be moderate to heavy rain in the above-mentioned areas. Among them, southern Yunnan There are heavy rains in parts of western and eastern Guangxi, western and southern Guangxi, southern Hunan, southern Jiangxi, southern and eastern Fujian, and southern Zhejiang, and there are heavy rainstorms in southern Yunnan, southern Guangxi, and western and southern Guangxi;

There are thunder and lightning in southern Yunnan, local thunderstorms, strong winds or small hail and other strong convective weather, and local thunder and lightning along the coast of South China. Among them, the heavier rainfall mainly occurred in Yunnan and western Guangxi from the 7th to the 8th, and the heavier rainfall mainly occurred in the eastern and southern Guangxi, Guangdong and Fujian from the 9th to the 10th. This rainfall process is very beneficial to easing drought conditions in southern Jiangnan, South China and Yunnan and reducing forest fire danger levels.

What will be the temperature during the Spring Festival in 2021?

Except for parts of South China and East China that have started a rapid warming mode, the temperature has risen significantly in most parts of the country, including Jiangnan, most of North China, and Southwest China. , the temperature in the middle and lower reaches of the Yangtze River will rise rapidly in the next 10 days. Judging from the average temperatures in the above-mentioned areas, they will all be "positive anomalies." Temperature anomalies refer to the difference between the temperature at a certain stage and the average temperature in previous years. "Positive anomalies" means that during the beginning of spring this year, most of our country The temperature in the region is higher than normal.

For example, in cities, the maximum temperature in Beijing, Tianjin and other places is expected to exceed 10 degrees in the next 10 days; the maximum temperature in Shijiazhuang, Hebei, Xi'an, Shaanxi and other places will also exceed 15 degrees; and Anhui The highest temperatures in Hefei, Henan, Zhengzhou and other places will hit 20 degrees.

On the occasion of the beginning of spring, most parts of the country feel the spirit of spring, but it is a different story in the northeast and northwest regions. Under the influence of strong cold air on February 1, the temperature dropped by more than 10 degrees in many places in Northeast China, northwest North China and other places. The temperature drop in Jilin was the most obvious. The Jilin Provincial Meteorological Bureau even launched a level three emergency response to the cold wave.