[Explanation] It is about to enter November, and the cold air has also "reported" one after another.
Currently (October 31) to November 1, there is a cold air affecting most of North China and Northeast China, and from November 2 to 4, a new cold air will come non-stop to "take office" ".
[Concurrent] Fang Chong, chief forecaster of the Central Meteorological Observatory
There have been two cold air recently, one is from October 31st to November 1st, and most of North China and Northeast China will have a temperature drop of about 4-8°C, of which the temperature drop in parts of central and eastern Inner Mongolia can reach or exceed 10°C. ℃, and with strong winds of magnitude 4 to 5, gusts can reach magnitude 6 to 8.
In the later period, it is expected that there will be another cold air process from November 2 to November 4, affecting most of the central and eastern parts of China.
The overall cooling rate in the northern region is expected to be 4-8 °C, and the southern region (cooling) is generally around 2-6 °C.
[Explanation] Fang Chong said that although the two cold air hits one after another this time, the overall intensity is not large, and the latter cold air has a larger scope of influence.
[Concurrent] Fang Chong, chief forecaster of the Central Meteorological Observatory
Generally speaking, the strength of these two cold air is not very strong, and the overall cooling rate is basically about 4-8 ℃.
The former cold air mainly affects the northern region, while the latter has a wider impact, affecting most of the central and eastern regions, including the southern region, where the temperature will drop by 2-6 °C.
Generally speaking, for the northern region this cold air process, the minimum (temperature) temperature drop at night is higher than that of the highest temperature during the day, and you may feel that the temperature difference between day and night will increase significantly later.
[Explanation] Why are these two cold air so "seamlessly connected"?
Fang Chong gave his answer.
[Concurrent] Fang Chong, chief forecaster of the Central Meteorological Observatory
Mainly because of the cold air in Siberia, under certain suitable weather conditions and environments, for example, there is a continuous high-altitude trough. Down, it (cold air) is guided to spread southward in batches.
Although the two strands of cold air seem to be in this "seamless connection" form, for a specific area, it is not "seamlessly connected".
For example, in Beijing, the first wave of cold air affects Beijing mainly on October 31, while the Beijing area is slightly warmer during the day from November 1 to 2, and the second wave of cold air affects Beijing mainly on November 2. Day and night to the 3rd.
[Explanation] Fang Chong reminded that although the overall intensity of the two cold air is not large, in northern China, special attention should be paid to the increased temperature difference between day and night due to the obvious drop in the minimum temperature.
[Concurrent] Fang Chong, chief forecaster of the Central Meteorological Observatory
The decline in the (most) low temperature in the northern region is relatively obvious.
For example, in Beijing, the lowest temperature in the morning yesterday (October 30) was about 10°C, and we expect that the lowest temperature on the morning of November 4th and November 5th may drop to around 0°C.
In this way, the increase in temperature difference between day and night is more obvious, so everyone needs to do a good job of preventing cold and keeping warm, and the other one needs to do a good job of changing clothes because of the increased temperature difference between day and night to prevent colds.
Dong Zeyu reports from Beijing
Responsible editor: [Lu Yan]