The strongest cold wave since this winter is affecting our country! At present, this "king-level" cold wave has brought significant cooling to many places in our country. At 10 o'clock today, the Central Meteorological Observatory issued the first low temperature warning this year. Under the "warm winter", what is the development trend of cold wave weather? Which places are more affected? How should we prevent frostbite during outdoor activities?
The Central Meteorological Observatory issued this year's first low temperature warning
Picture / Central Meteorological Observatory
Picture / Central Meteorological Observatory
The Central Meteorological Observatory issued a low temperature yellow warning at 10:00 on December 16. This is the first low temperature warning issued by the Central Meteorological Observatory this year.
The Central Meteorological Observatory will continue to issue a low temperature yellow warning at 18:00 on December 16: Affected by the cold wave and subsequent cold air, temperatures will continue to be low in most parts of my country in the coming week. It is expected that from 20:00 on December 16 to 20:00 on December 19, the daily minimum temperature in some areas of northern Xinjiang, central and eastern Northwest China, Inner Mongolia, North China, Northeast China, Huanghuai, Jianghuai, Jianghan, northern Jiangnan, Guizhou and other places will be higher than the same period in history. It is more than 5℃ lower. Among them, the daily minimum temperature in some parts of the eastern northwest, Inner Mongolia, Northeast China, North China, central and eastern Huanghuai, and eastern Jianghuai is more than 7℃ lower than the same period in history. The minimum temperature 0℃ line will be located from southern Guizhou to The northern area of Jiangnan.
The strongest cold wave since this winter is affecting our country
At present, this "king-level" cold wave has brought significant cooling to many places in our country. From December 16th to 18th, the cold wave will move all the way south, affecting Hainan, giving our country about It will bring cooling to 80% of the country, and more than 20 provinces across the country may be frozen.
Picture/China Weather Network
This morning (December 16), a strong cold wave has arrived in Jiangnan and South China, and the temperature has dropped sharply.
live monitoring shows that this morning, some areas in southern Chongqing, Guizhou, southern Hunan, Jiangxi, central and southern Zhejiang, Shanghai, northern Guangdong, and central and northern Guangxi experienced a cooling of 8 to 14°C. Southeast Guizhou, southern Hunan, and southern Jiangxi , northeastern Guangxi and other local areas have a cooling range of 16 to 20°C; the lowest temperature line of 0°C is located from southern Hubei to southern Anhui and central Zhejiang.
A total of 20 provincial capital cities across the country had their lowest temperatures in half a year this morning, including Hohhot -23.3℃, Taiyuan -19℃, Beijing -12℃, Tianjin -12.4℃, Shijiazhuang -8.3℃, Xi'an -6.3℃, Lanzhou -12.5℃, Yinchuan -15.7℃, Xining -20.4℃, Urumqi -25.6℃, Jinan -10.1℃, Zhengzhou -3.9℃, Nanjing -2.2℃, Shanghai 1.2℃, Hangzhou 0.9℃, Changsha 0.6℃, Nanchang 1.6℃ , Chongqing 5℃, Guiyang -0.2℃, Nanning 9.2℃. Among them, Xining and Hohhot fell below -20℃ for the first time in the second half of the year, Beijing, Tianjin, and Jinan fell below -10℃ for the first time in the second half of the year, and Guiyang fell below 0℃ for the first time in the second half of the year.
In addition, from yesterday to this morning, Wuhan, Hefei, Nanjing, Hangzhou, Shanghai, Changsha, and Guiyang all experienced the first snow of this winter.
[Beijing]
-7.3℃! Today’s highest temperature hit a record low
video/@meteorology Beijing
As of 16:00 today, the highest temperature at the Southern Suburb Observatory is -7.3℃, which is the highest temperature in early and mid-December. Judging from the lowest value, this temperature has reached the latest low value. Historically, the lowest daytime maximum temperature at the Southern Suburb Observatory during the same period was -6.9℃, and today's -7.3℃ is the latest low.
[Shandong]
The local area will be close to or fall below the historical extreme value for the same period
Shandong low temperature orange warning is in effect, and most areas will experience continuous low temperature weather. Tomorrow (December 17) the lowest temperature in the mountainous areas of northwest and central Shandong will be -19 ~-15℃, partially lower than -20℃, close to or below the historical extreme value for the same period. At the same time, there will still be snowfall in some areas of Yantai, Weihai and other places today and tomorrow.
[Jiangsu]
Temperatures continue to drop over the weekend, and the freezing range expands
During the two days of the weekend (December 16th and 17th), the temperature will still be low in various parts of Jiangsu, and the maximum temperature will hover around freezing point, making hands and feet freezing all day long , the public needs to keep warm.From tomorrow night to the day after tomorrow, rain and snow will increase again in Jiangsu, and snowflakes may fall in most areas. Please pay attention to traffic safety when going out.
[Guangdong]
"Winter has entered" overnight, short sleeves yesterday, down today
On the morning of December 16, in Guangzhou Kecun, citizens traveled in the cold wind. Picture/Guangzhou Daily
According to @Guangdong Weather News, affected by the cold wave, at 8 o'clock today, the temperature in many places in Guangdong dropped by more than 10℃ compared with yesterday, with the temperature in the mountains falling as much as 15.4℃. At 15:00 today, the temperature in most of Guangdong has dropped significantly compared to yesterday. It is not an exaggeration to say that it is breaking bones. In some cities and counties in northern Guangdong, the temperature dropped by more than 20℃.
What is the development trend of cold wave weather under the "warm winter"?
According to previous weather predictions, this year will be a "warm winter". But the current round of cold wave weather is not only wide in scope, but also relatively strong. Why is this? What is the development trend of cold wave weather this winter?
Video/CCTV News
Is the prediction of a warm winter inconsistent with the current situation of cold wave cooling, rain and snow?
Picture/IC
Faced with the prediction of a warm winter and the current situation of cold wave cooling, rain and snow, it seems quite contradictory, but in fact: cold wave and "warm winter" are not conflicting at all!
☞ "The warmest winter in history" is for The prediction of the average temperature for the entire region of my country and the entire winter period does not mean that there will be no periodic cold air/cold waves.
Everyone should have learned the average temperature in primary school mathematics. The general level of its statistical data is the middle value, which will flatten the specificity of the data. In winter, the thermal difference between the sea and the land creates the air pressure difference between the cold high pressure on the continent and the warm low pressure on the ocean. The cold air will not disappear suddenly, and the temperature will not remain unchanged, there will always be fluctuations. For example, we have experienced several rounds of major reversals between cold and warm weather since November (such as the rare recovery from late October to early November, and two more cold waves from November 6 to 7 and November 23 to 25). Therefore, the average trend of "warm winter" cannot be used to deny the possibility of a single cold air/cold wave specific process.
☞ It is only mid-December, and the weather in January and February has not yet occurred. It is not appropriate to say that the cold wave is "slap in the face" so early.
Just looking at a single specific process is not enough. A single process cannot represent the entire winter state. Just like we cannot completely deny the "warm winter" trend just because this cold wave may cause rare cold temperatures in North China, Huanghuai and other places during the same period, after all, winter has just begun.
Let’s talk about this cold wave. Although it is a cold event, we also see the strength of warm weather.
☞ The precipitation pattern in Henan is complex, and the side reflection is strong.
On December 14th, Henan had a "hodgepodge" of rain - ice particles, freezing rain, sleet, snow, thundering snow, thundering ice particles... The reason why the precipitation phase is so complicated is because it is in a warm and cold climate. At the junction of forces, before the main body of the cold wave moves south, strong warm and humid air currents occupy this area first, bringing abundant water vapor and creating a warm area with higher temperatures in the sky, forming a cold (high altitude)-warm and humid ( The inversion layer between hollow) and cold (near the ground) causes snowflakes and ice crystals to gradually melt as they fall, resulting in complex precipitation phases. The fact that
can reach such a northern position at this time of year is actually evidence of the strong strength of warm and humid airflow.
Winter is still long, and it is still unclear whether it will happen again when the weather picks up later.
How to prevent frostbite in winter? How to deal with frostbite?
Frostbite is damage caused by low temperature and cold. The lower the temperature, the more humid the area, and the stronger the wind, the more serious the damage.
We inevitably have to engage in outdoor activities, how can we prevent frostbite?
① Keep warm: Effective warmth preservation is the best measure to prevent frostbite. Pay attention to protecting the ears, nose, hands, feet and other peripheral parts. Also avoid prolonged exposure to cold environments.
②Keep the skin dry: Humid conditions are more likely to cause tissue frostbite. Therefore, if you sweat after exercising, you should pay attention to getting out of the cold environment and change dry clothes in time.
③ Pay attention to wind protection: Cold wind will further reduce the cold body temperature, accelerate the heat dissipation of the skin, and cause aggravation of damage.
Video/CCTV News
Doctors pointed out that the "original method" of scrubbing the frostbitten area with snow water is unscientific and will aggravate tissue damage. If you find frostbite, get out of the cold environment as soon as possible.
Sources: CCTV News, Central Meteorological Observatory, China Weather Network, Beijing News, Guangzhou Daily, @meteorologyBeijing, @guangdongweather, Beijing Jishuitan Hospital Affiliated to Capital Medical University public account
Editor Ai Zheng Proofreading by Wu Xingfa
