Causes of abnormal weather in 215

The Central Meteorological Observatory issued a forecast: With the influence of the last round of cold air coming to an end, the temperature in most parts of the central and eastern regions will rise obviously, and the highest temperature in many places will exceed 2℃. However, with the departure of a new cold air in northern Xinjiang, most parts of the north will gradually cool down in the next three days, and some areas will be accompanied by windy and dusty weather.

The temperature rises and falls like a roller coaster, which seems to be the norm this spring. At the end of March, the warm and humid airflow suddenly strengthened northward, and the temperature in most parts of the south began to flee like a runaway wild horse. Soon, the temperature in the south of the Yangtze River broke through the 3℃ mark, and even exceeded 35℃ locally, reaching the standard of high temperature weather, just like summer. On April 1st, the high temperatures in central Sichuan, western Chongqing, western Guangxi, Hainan and other places emerged, and Chongqing won the first high temperature day this year, 35.7℃! On April 5, on the eve of the arrival of cold air, the temperature rose obviously before the front, and the temperature in western Guangxi and Fujian was like midsummer. The United States imported Puweixin Tmall

Just when people thought that warm spring was a foregone conclusion, a strong cold air embarked on the journey of counterattack. Its arrival not only brought an unusually heavy rainfall to the middle and lower reaches of the Yangtze River, but also made the Qingming holiday chill this year. On April 6, the highest temperature in most parts of the south of the Yangtze River was only a dozen degrees Celsius. On the night of April 7th, the temperature dropped below 1℃ in most parts of the south of the Yangtze River, below 5℃ in the middle and lower reaches of the Yangtze River, and even fell below zero degrees Celsius in higher-lying areas, and "Peach Blossom Snow in April" appeared in mountainous areas such as Zhejiang, Hubei and Anhui.