The temperature in most parts of the central and eastern regions will drop by about 10℃. Is this the coldest winter?

Beijing, 65438+February 28th According to the website of the Central Meteorological Observatory, the Central Meteorological Observatory continued to issue an orange warning of cold wave at February 28th 18: due to the influence of strong cold air, there will be strong winds and strong cooling weather in most parts of central and eastern China. It is estimated that from 20: 00 on the 28th to 08: 00 on the 30th, the temperature will drop by about 10℃ in most parts of central and eastern China, and the temperature will drop by 12 ~ 16℃ in the northeast of northwest China, southeast of northeast China, western and northern North China, southern Huanghuai, Jianghuai, Jiangnan and central and northern South China, and the local temperature drop will reach 6544. After cooling, the 0℃ minimum temperature line will be pushed south to the north of South China, and the-10℃ minimum temperature line will be from the south of Huanghuai to the Qinling Mountains.

Process cooling forecast from 20: 00 on February 28th, 65438 to 08: 00 on February 28th, 2020.

The lowest temperature forecast from 20: 00 on February 28th, 65438 to 08: 00 on February 28th, 2020.

Defense guide:

1, personnel should pay attention to add clothes to keep warm; In production, we should be prepared to defend against strong winds and cool down;

2, doors and windows, coamings, scaffolding, temporary structures and other structures that are easily blown by strong winds are fastened, and outdoor items that are easily affected by strong winds are properly placed;

3. Take shelter from the wind and notify outdoor workers to pay attention to safety;

4. Pay attention to the latest information reported by the media about gale cooling, so as to take further measures.

Yuan Yuan, a researcher at the Climate Prediction Office of the National Climate Center, pointed out that in fact, it is normal for the temperature to drop to freezing point and snowfall to occur in northern China, especially in Inner Mongolia and Northeast China, on June 5438, 2020+10/early October. According to the data of climate state (30-year average climate), the first frost began to appear in the middle and late September in northern China on the premise that the lowest ground temperature dropped to freezing point. After entering 10, although the temperature in most parts of the north and central and eastern regions is lower than normal, it is time to be cold this season. Break through freezing point, first frost, snowfall, etc. Also appeared as scheduled.

The sudden cooling during the National Day holiday made people feel strong, which made the rumors spread more and more widely. The rumor short film also plausibly said that all this was triggered by La Nina. But in fact, the cooling process is a weather process, which is mainly affected by large-scale atmospheric circulation anomalies, and this weather phenomenon is not necessarily related to La Nina.

Yuan Yuan emphasized that, generally speaking, in the winter when most La Nina events are in full swing, the meridional scale of the atmospheric circulation in the middle and high latitudes in Europe and Asia may increase, and the cold air activities affecting China are more frequent than normal, and the probability that the temperature in the central and eastern regions of China is lower than normal is higher. Therefore, whether winter is cold or warm in 2020 needs to be comprehensively judged on the basis of scientific analysis.