[Explanation] On December 17, the fifth round of cold wave this winter continued to affect China, and the cooling range was further expanded. Today, the temperature in the north is bottoming out, and the low temperature in the south is mainly concentrated on the 18th.
[Concurrent] Ma Xuequan, chief forecaster of the Central Meteorological Observatory
This cold wave process has brought a wide range of gale-cooling weather to the central and eastern regions of my country. The temperature drop is generally 6-8°C, and in some areas it reaches 10°C or more, and even exceeds this temperature drop of 12°C.
In addition, most areas on land are also accompanied by northerly winds of magnitude 4-5, and most areas will reach northerly winds such as magnitude 5-6. Of course, gusts will have winds of magnitude 7-9. At the same time, there are also 7- from north to south at sea. Weather with strong winds of magnitude 8 and magnitude 10.
In addition, there are parts of the north, such as the eastern part of Inner Mongolia, and the central part of the Northeast. Of course, the Shandong Peninsula also has some snowfall, especially the cold current snowfall in the Shandong Peninsula is quite obvious.
[Explanation] Why does this cold wave feel so cold?
Ma Xuequan said that the cold air force was weak before the cold wave, which caused the temperature to be higher, and the sudden cold wave caused a larger drop in temperature.
[Concurrent] Ma Xuequan, chief forecaster of the Central Meteorological Observatory
Because before this (cold wave) process, the cold air forces were relatively weak, which caused a sharp rise in temperature. Siberia has a strong cold air, which affects most of our country.
The temperature in the early period was relatively high, and then the cold air affected it, which caused such violent fluctuations or drastic drops in temperature, forming this kind of cold wave weather.
But in fact, in terms of its own power, the cold air is not particularly strong.
[Explanation] According to the China Weather Network, after the cooling, the temperature in some cities will be lower than in mid-December of normal years, and even temporarily as cold as mid-January.
Ma Xuekuan said that this is normal.
[Concurrent] Ma Xuequan, chief forecaster of the Central Meteorological Observatory
In fact, during every activity with obvious cold air activity, its temperature must be lower than normal, because the "perennial" we are talking about is an average condition.
I just mentioned the average temperature in January, or the average minimum temperature. Because it is an average value, it is not particularly low.
Therefore, the minimum temperature caused by the influence of the cold air this time may be a little lower than the average minimum temperature in January. Of course, this does not mean that the cold air is particularly strong.
[Explanation] According to Ma Xuekuan, the temperature will gradually rise from December 18th. It is predicted that there will be a strong cold air affecting my country from December 24th to 26th.
[Concurrent] Ma Xuequan, chief forecaster of the Central Meteorological Observatory
We now predict that it will be on the 24-26th, and there will be a strong cold air that will affect most of the central and eastern regions, and will also cause large-scale wind cooling in the central and eastern regions, including the rain and snow in the southern region. big.
Dong Zeyu reports from Beijing
Editor in charge: [Lu Yan]