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The cold snap hits the central and eastern regions to initiate “fast freeze” mode
The temperature in most central and eastern regions is expected to fall around 10 ℃; the northern part will experience the coldest period of winter today and tomorrow.
The Central Meteorological Observatory continued to issue an orange cold wave warning at 6:00 p.m. on December 28. Affected by the strong cold air, there will be strong winds and severe cooling in most of central and eastern China. The Beijing Meteorological Observatory also issued a blue cold wave warning signal at 4:30 p.m. on December 27. Affected by the strong cold air, it is expected that there will be a cold wave weather in Beijing from 28 to 30, and the minimum temperature will drop by more than 8 ℃.
Beijing News yesterday morning, the Central Meteorological Observatory issued an orange cold wave warning. From 28 to 31, most of China’s central and eastern regions are expected to enter “flash freeze” mode, ushering in a cold wave weather process. This is also the highest level of cold wave alert issued by the Central Meteorological Observatory since November 2016. At 6:00 p.m. yesterday, the Central Meteorological Observatory continued to issue an orange cold wave advisory.
Higher temperatures in Jinan and elsewhere will break freezing for the first time this winter
It is estimated that from 8:00 p.m. on the 28th to 8:00 a.m. on the 31st, the temperature in most of the central and eastern regions will drop by about 10 ° C, the northeast of the northwest, the southeast of the northeast, the western parts and northern northern China, southern Huanghuai, Jianghuai, Jiangnan, and central and northern southern China. The soil temperature drops from 12 to 16 ° C, and the local temperature drop can exceed 16 ° C. The aforementioned areas will have north winds of magnitude 4 to 6 and gusts of 7 to 9; Level wind from the north; After cooling, the minimum temperature of 0 ℃ will push south to the northern part of southern China, and the minimum temperature of -10 ℃ will be from the southern part of Huanghuai to Qinling.
Zhang Tao, chief forecaster of the Central Meteorological Observatory, analyzed that the cold wave climate has the characteristics of wide impact, severe cooling, low temperature and long duration strong winds. Most areas will experience the coldest weather since the beginning of winter. During this process, all the central and eastern regions were under its influence, and the temperature drop in most areas was above 8-10 ℃, in some areas it dropped from 12-14 ℃ and the local temperature reached the 16 ℃.
The whole cooling process is very fast. After cooling, the temperature in most of the central and eastern regions will be the lowest since this winter, and the highest temperature in Jinan, Zhengzhou, Nanjing and other places will break the freezing point for the first time. The coldest period since the beginning of winter is spent in the north today and tomorrow. Record low temperatures in Jianghuai, Jianghan, Jiangnan and elsewhere are concentrated on the 30th and 31st.
Rain and snow have a short duration
Light snow or sleet is expected in Huanghuai, Jianghuai, North Jiangnan, Jianghan, Southeast Northwest China, and Northwest Guizhou today. Among them, there will be light snow or sleet in eastern Shandong, northern Jiangsu, northern Anhui, northwest Hubei, and southern Shaanxi. There is moderate snow in some areas and a lot of snow locally. There were light rains over most of the southern Yangtze River, the western and northern parts of northern China, the eastern part of southwestern China, and the eastern part of the island of Taiwan.
Due to the rapid advance of the cold wave, the precipitation in several places has changed from rain to more “simple” snow, but the whole precipitation process is also very fast. Zhang Tao analyzed that because the cold air is relatively strong, the warm and humid air is relatively weak, the amount of precipitation is not large, and the duration of rain and snow will be relatively short. The southeast part of the northwest, the east of the southwest, Huanghuai, Jianghan, Jianghuai and Jiangnan have light to moderate rain and snow. In the north of the Yangtze River, there will be rain and snow, but the precipitation time is not long, basically within 24 hours. In the end, there will be no continuous rain, snow, and freezing weather.
Zhang Tao suggested that the cold wave weather will bring obvious strong wind, strong cooling and low temperature, rain and snow weather, and relevant regions and departments should strengthen prevention. Low temperature climate will lead to increased electricity and gas consumption in urban and rural areas. Relevant departments should prepare for energy dispatch and supply guarantees such as coal, electricity, oil and gas, and conduct full safety inspections of water supply, power supply, gas supply and communications. Shaanxi, Henan, Hubei, Shandong, Anhui, Jiangsu, Guizhou and other places should pay attention to prevent the adverse effects of rain, snow and icing on the roads in transportation and urban operations.
■ Influence
The extremes and intensity of rain and snow are less than the cold wave of January 2016
There have been two cold spells since the beginning of winter. The last time it was in mid-December, it affected most of the central and eastern regions.
Compared to the cold snap of two weeks ago, this year-end cold snap outperformed the previous one in terms of both the extent of the impact and the severity of the temperature drop. However, the extreme intensity and intensity of the rain and snow were not as good as the cold wave “Overlord” in January 2016.
The wind brought by the cold wave will last a long time. Winds are most pronounced in the plains and southern regions, and most of the central and eastern regions have 4-6 north winds. In the past, when cold air reached the south, the wind would drop significantly and the wind would be much higher in the northern plateau areas, including Inner Mongolia and northern China. But in this cold wave climate, the wind in the north was relatively weak, and the wind in the east and south, especially in flat areas, was stronger than most cold air processes.
Zhang Tao said that this year is a relatively early cold year and more cold waves in recent years, and some areas have the coldest weather in the same period in the past 10 years.
“In general, it is easy for cold waves to appear in the first winter and early spring, but there are not too many cold waves in the middle of winter, but he does not rule out the possibility of cold waves next year,” Zhang Tao said.
■ Related news
Beijing’s lowest temperature will drop below -12 ℃
On December 27, the Beijing Meteorological Observatory issued a blue cold snap warning. Affected by strong cold air, cold snap weather is expected in Beijing from 28 to 30. The minimum temperature will drop by more than 8 ℃. The average wind force will be around 5 from the night of the 28th to the 30th., Please take precautions.
For Beijing, this cold snap is mainly manifested by strong winds and cooling. The average wind is expected to be at least 4 levels overnight from December 28 to 29, and the minimum temperature at night will drop to -10 ° C. Taking into account the influence of the north wind, the body temperature will be more low; the highest temperature during day 29 and 30 is only -5 ℃ to -6 ℃. According to the analysis of the Beijing Meteorological Office, it appears that the cold air will cause the minimum temperature in Beijing to drop below -12 ° C.
However, this is not the lowest temperature in Beijing during the same period. Since the establishment of the South Suburb Observatory, the extreme minimum temperature in December was -18.3 ℃, which occurred on December 27, 1966; The extreme minimum temperature in December in the last ten years was -14.4 ℃, which appeared on December 31, 2019. The maximum daily minimum temperature within a 24-hour cooling range was 10.6 ° C, which occurred on 3 as of December 4, 2008; The maximum daily minimum temperature within a 48-hour cooling range was 12 ° C, which occurred from December 3-4, 2008.
Beijing issued a heating warning requirement “No room temperature drop”
The Beijing Meteorological Observatory recently issued a blue cold snap warning. Cold snap weather is expected in Beijing this week and the minimum temperature will decrease by more than 8 ℃. The reporter learned yesterday from the heating management department of various districts in Beijing that the heating bureau of the Beijing Municipal Urban Management Committee has issued a heating warning notice, requiring all heating units to heat their heating equipment. heating ahead of time to ensure that “the temperature drops and the room temperature does not drop.”
The warning notice noted that the external environment is low and the system is operating at high temperature and high pressure. Each heating unit must strengthen staffing, strengthen inspections, and emergency teams must be on duty. In the event of a pipeline break and other emergencies, take care of it immediately. Construction safety protection. Faced with the weak links exposed in the operation, you need to do a good job of accounting.
In addition, each district heating management department should increase the weight of the assessment during the cooling period, check the district distribution status on the heating service management platform at any time, and find the district with a strong increase In complaints, check the service situation of the heating unit for the first time and supervise it. Rectification, conduct interviews with heat supply units that are ineffective at rectification and have an unfair attitude, and link them to subsidies.
Beijing News reporter Li Yukun Huang Zhecheng
