On December 19, as the cold wave went southward, the dry and cold air quickly gained the upper hand in the central and eastern regions of China. Although from high-definition visible light satellite cloud images, there are still some cold clouds lingering in the southwest , the outer rain bands of Typhoon Lei in the South China Sea has began to touch the southern coast of Guangdong, Guangxi and Hainan.
As a result, after the strong wind and heavy rain in the South China Sea, the typhoon in south country will increase further, and the rainy area south of the Yangtze River will expand again. China’s Central Meteorological Observatory predicts that starting from December 22, the rain and snow in the southwest will also increase . The winter in the south is always dominated by sunny, dry and warm weather, however there will be a lot of rain and snow in southern cities this year.
Tibet, Yunnan, Sichuan, Chongqing, Guizhou and other provinces will experience intensive rain and snow. Among them, some areas can reach moderate to heavy snow. The Central Meteorological Observatory’s mid-term weather forecast pointed out that on December 23-25, there will be a strong cold air that will affect the central and eastern regions of China. There will be 4 to 6 northerly winds, and the temperature will generally drop by 6 to 8 degrees.
Even some supercomputers predict that if the snow can advance westward to the west of Wumeng Mountain on the Yunnan-Guizhou Plateau, the “Spring City” of Kunming may have some snow. According to such predictions, this will be the first large-scale snowfall in the southwest region in the second half of the year.
Of course, this large-scale rain and snow weather is not only related to cold air, but also closely related to the strengthening of water vapor transmission. The supercomputer predicts that starting from the second half of the year, the south branch of the Qinghai-Tibet Plateau will vigorously oscillate and eventually twist and form a joint. The extremely powerful southern branch trough, the southern branch trough can pull ocean water vapor into our country, especially in the southern region. At this time, there was cold air going south again, which would eventually stimulate a wide range of rain and snow. However, in this large-scale rain and snow, how much snow can fall in the south and how many places need to be continuously observed. In general, the weather pattern may really change in late December, and the south may be greeted by rain, snow, and wet weather.