On the morning of January 20, the Shanghai Central Meteorological Observatory announced the issuance of a blizzard red warning signal (drill), which made many Shanghai netizens frightened, of course, just like the word "drill" that released the signal, the release of the warning is not really going to snow in Shanghai, but only part of the drill, the drill is to assume that when encountering extreme weather, simulate the workflow and response work from forecasting, early warning, emergency handling of various departments and other aspects.
As can be seen from the Fengyun No. 4 high-definition visible light satellite cloud map at noon today, although the range of cold clouds in the Yangtze River Delta region of the mainland has expanded significantly, many places in Shanghai are still sunny today, and most of these cold clouds in the Yangtze River Delta are smooth and shallow, and there is no sign of blizzard for the time being. Although Shanghai is not easy to snow in general years, but it is not without heavy snowfall, the maximum snow depth record of Shanghai National Station is 14 cm, Chongming is more than 23 cm of snow record, Shanghai Central Meteorological Observatory pointed out that Shanghai's snow intensity is generally difficult to reach the red warning level, but it is difficult not to have, in history Shanghai also has a record similar to blizzard, the drill warning still reminds everyone to prevent problems before they occur, can not be lucky.
In fact, today (January 20), when Shanghai issued a red warning for the drill of blizzards, the largest range of rain and snow weather on the mainland this year will be launched, and this morning, Beijing in northern China has taken the lead in snowing, although the total amount of snow is not large, but among the snowflakes that have been raised this morning, many parts of Beijing have begun to accumulate snow. According to the Forecast of the Central Meteorological Observatory, from January 20, a wide range of rain and snow will spread from the Qinghai-Tibet Plateau to the eastern part of the northwest region, north China, Huanghuai and most of the south, among which parts of Henan and Shaanxi may also have moderate to heavy snowfall.
In fact, in late January, the cold and warm air in the central and eastern parts of the continent will continue to fight each other, and the rain and snow weather will be endless. In the current forecast, in addition to the large-scale rain and snow from January 20 to 24, there will be another wave of large-scale rain and snow after January 25. Judging from the current supercomputer forecast, after January 25, the cold air in the central and eastern parts of the mainland has strengthened, and the snow line has also shown a trend of moving south to the southern region. For example, on the morning of January 28, the snow line will go deep into Chongqing, Guizhou, Hubei, Hunan, and the Yangtze River in Anhui and Jiangsu will also show signs of snow turning along the Yangtze River. From this point of view, although the Shanghai Blizzard Red Warning is only a drill, there are indeed more signs of snowfall in the south next week, and it will bring more trouble to the ongoing Spring Festival.