The temperature in most parts of the central and eastern regions will drop by about 10℃. Is this the coldest winter?
China News Service, December 28. According to the website of the Central Meteorological Observatory, the Central Meteorological Observatory will continue to issue an orange warning for cold waves at 18:00 on December 28: Affected by strong cold air, there will be strong winds in most areas of central and eastern my country. and strong cooling weather. It is expected that from 20:00 on the 28th to 08:00 on the 31st, the temperature will drop by about 10°C in most areas of the central and eastern regions, such as the northeastern part of the northwest region, the southeastern part of the northeastern region, the western and northern parts of North China, the southern part of Huanghuai, Jianghuai, Jiangnan, and central and northern parts of South China. The ground temperature will drop by 12 to 16 degrees Celsius, and the local cooling range can reach more than 16 degrees Celsius. The above-mentioned areas will have northerly winds with level 4 to 6 and gusts of level 7 to 9. The eastern and southern sea areas of my country will have level 7 to 9 and gusts of 10 to 11. Level northerly wind; after cooling, the minimum temperature line of 0℃ will press southward to the northern part of South China, and the minimum temperature line of -10℃ will be from the south of Huanghuai to Qinling.
Cooling forecast from 20:00 on December 28, 2020 to 08:00 on December 31, 2020
Minimum temperature forecast from 20:00 on December 28, 2020 to 08:00 on December 31, 2020
Defense Guide:
1. Personnel should pay attention to adding clothes to keep warm; be prepared for strong winds and cooling weather in production;
2. Doors, windows, hoardings, Tighten scaffoldings, temporary structures and other structures that are easily blown by strong winds, and properly place outdoor items that are easily affected by strong winds;
3. Take shelter in wind shelters and notify outdoor workers to pay attention to safety;
4. Pay attention to the latest information about strong wind and cooling reported by the media so that further measures can be taken.
Yuan Yuan, a researcher at the Climate Prediction Office of the National Climate Center, pointed out that in fact, in early October 2020, in northern my country, especially the typical representative Inner Mongolia and Northeastern regions, it was normal for temperatures to drop to freezing points and snowfall. . Judging from climate state (climate averages over 30 years) data, the first frost begins in mid-to-late September in northern my country, and the condition is that the lowest temperature on the ground drops to freezing point. After entering October, although the temperature in most parts of the north and central and eastern regions is lower than normal, this season is about to get colder. Breaking through the freezing point, the first frost, snowfall, etc. are also on schedule.
The sudden drop in temperature during the National Day holiday made people feel strongly, which made the rumors spread more and more widely. The rumor clip also plausibly claimed that all this was caused by La Nina. But in fact, this cooling process is a weather process, mainly affected by large-scale atmospheric circulation anomalies. This weather phenomenon is not necessarily related to La Niña.
Yuan Yuan emphasized that generally speaking, in the winter when most La Niña events are at their peak, the longitude of atmospheric circulation in mid- to high-latitudes of Eurasia may increase, and the cold air activities affecting my country will become more frequent than normal. The temperature in the eastern region is more likely to be lower than the same period of the year. Therefore, whether the winter of 2020 will be colder or warmer requires comprehensive judgment based on scientific analysis.