The weather in Changsha is always strange and cold these days. Is it normal compared with previous years?

In 2006, the winter in Changsha continued to be warmer. After the spring of 2007, the temperature continued to drop due to the influence of cold air. The rainy weather has lasted for several days, and hail appeared in Changsha on 17. The weather station said: The weather in spring is inherently unstable. It is normal for this kind of weather to appear in mid-March. This kind of weather is not "chilly in spring".

In the process of warming up in spring (usually in March and April), the increase of Siberian air pressure makes cold air go south, and the area south of the Yangtze River often has obvious cooling due to the invasion of cold air. This kind of weather is called "warm before spring and cold after spring".

Cold in late spring is a disastrous weather in the south, which is basically encountered every year. During this period, cold and warm air meet. When the cold air from the north invades Jiangnan and South China, the cold and warm air are evenly matched, which often leads to low temperature and rainy weather. The average temperature of the day is 12℃ or below, and the rainfall lasts for 3 to 5 days. Or the temperature drops sharply in a short time, and the daily minimum temperature drops below 5℃.