Note that the strongest cold wave of this winter has been brewing successfully, are you feeling its power?
For several days in a row, the monitoring results of the meteorological observatory have become more frequent and more frequent, and the single warning has now developed into "four warnings at the same time". Due to the menacing arrival of the strongest cold wave this time, it has formed a trend of sweeping from west to east and from north to south, and various provinces have also issued emergency warnings to remind the public. But at this time, "strange things" happened.
According to the monitoring of the first meteorological observatory and the feedback of the people in various places, on the 14th, Henan, Shandong, Shanxi and other places have a rare "thunder and snow" spectacle at the same time. In the eyes of the people, this is not a good sign, and even because of its rumors, many people do not want to see it. So, what's going on here?And what many people are worried about is whether there will be a "snow disaster" that they are worried about?Let's take a look at them one by one.
There is no doubt that yes, after this round of cold wave has swept many northern provinces, there is no intention of stopping, but there is still a momentum of going deeper and all the way south. No, in the latest ** meteorological station warning, it has been "live", and continues to issue a rare "four warnings" of cold wave + strong wind + blizzard + freezing. There is no doubt that this has been the strongest cold spell of this winter, and it is extremely rare in history.
The reason why I say this is embodied in two aspects. First of all, it must be the range of this cold wave. It can be seen from the early warning maps of various indicators released by the ** meteorological observatory in recent times, and the coverage is getting wider and wider visible to the naked eye. In the same way, with the expansion of the affected area of the cold wave, the official used descriptions such as "more than 1 3 whole territory" and "most of my country".
And according to the latest trends, there will be expansion in the future!On the 15th, it will be extended to most areas south of the Yangtze River and north of the Yangtze River, and on the 16th, it will be extended to most of southern China. By the 17th, the minimum temperature line 0 will press south to the south of Guizhou and the north of Jiangnan, and the -10 line will be located in the north of Huanghuai to Qinling.
Secondly, nature is reflected in the intensity. Among them, the most obvious is believed to see the blue-purple national cooling forecast map. As you can see from the above, most of the cooling range is 14-16 degrees, while the maximum cooling range, such as Shaanxi, Jilin, Liaoning, and some parts of Guizhou, will drop by 20 degrees. Overall, the minimum temperature in many provinces and cities in North China and northern Huanghuai may be close to or reach the extreme cold of the same period in history.
In addition, the super cooling also brought a wide range of high-intensity blizzards. According to the early warning, Jilin, Liaoning, Henan, Shandong, Hubei and other places will form heavy snowfall, the intensity of which is as high as 10-12 mm. From a scientific point of view, the amount of snowfall does not equal the amount of snow, and according to the amount of snow, the depth of the new snow cover is 10-12 cm.
In addition, there is a popular saying that "snow is colder", and the temperature will be further reduced when the snow melts under physical action. Therefore, it can only be said that it is cold enough now, but it is also necessary to be wary of extreme low temperatures when the snow melts.
"Thunder and snow", also known as thunder and winter. It is visible to the naked eye that when this scene occurs, it is very shocking, and it will snow at the same time as thunder and lightning. This kind of weather is very rare, and the conditions for formation are extremely harsh.
On the 10th, there was a phenomenon of "thunder and snow" in many places in Henan.
Thunder and snow" range expanded.
It is worth noting that it has been around since ancient times. As early as in the ancient books, there is a record in the "Innocence" of Han Yuefu: "The mountains are edgeless, the precipitation is exhausted, the thunder in winter is shaking the rain and snow in summer, and the heaven and the earth are together, but dare to be with the king" to describe this phenomenon.
And the folk are spreading: "thunder and snow, people eat iron", "thunder strikes winter, ten cattle pens and nine empty", "thunder and snow in the first month, rain in February, less seedling water in March, and the seedling festival in April", "thunder in the first month, one hundred and eighteen droughts"...And so on.
However, perhaps because it is too rare and the scene is more shocking, the public does not have a good impression of it, and even thinks it is abnormal, whether it indicates that something bad is about to happen. However, with the development of modern science, scientists have also figured out how it happens. Essentially, it's a form of severe convective weather, but it just happens to be thundering, discharging and snowfall at the same time.
But from the perspective of "what is foreshadowed", I really guessed correctly. But it doesn't mean anything bad, it means that a blizzard is coming!The reason for the formation, especially when it snows in winter, is to form "thunder and snow", because it happens to meet the strong force of warm and humid air in the upper altitude, and there is strong cold air in the north to the south, and the warm and humid air is lifted when the two meet, and the convection is intensified, so the phenomenon of "thunder and snow" is formed.
Indeed, it is a normal natural phenomenon, but it is also an event in meteorological history with an extremely small probability of occurring, which can only be said to be very rare. Therefore, from a scientific point of view, whether it is the first month or the winter, it is normal for thunder and snow to fall at other times, and it has nothing to do with auspiciousness or ominousness.
Through the comparison of the national weather conditions in recent days, it will be found that the temperature difference from the beginning reached 66 degrees and 67 degrees, but today, the maximum temperature in the south is only more than 20 degrees, and the temperature difference between the north and the south has also plummeted, getting smaller and smaller. However, this is not a good thing!
According to experts, there were several streams of cold air moving south, which led to a series of cold waves that persisted for a long time and escalated in intensity. The reason why the temperature difference between the north and the south was so large was actually because the cold wave was still accelerating and escalating, and it did not completely move south and did not reach its peak. On the contrary, the temperature difference between the north and the south is getting smaller and smaller, which naturally means that the strongest cold wave this winter is coming.
And this point also happens to echo the wonder of "thunder and snow" in many places in recent days. In general, although "thunder and snow" does not mean that anything bad happens, because the overall temperature is relatively low during the snow and snow, it is necessary to be vigilant against extremely low temperature weather and keep warm. What do you think?