Expert interpretation: The largest range of rain and snow has come online this year, and the boundary between rain and snow is farther north than the same period in previous years
From January 25 to 28, the central and eastern regions are expected to usher in a new round of large-scale rain and snow. At that time, there will still be rain and snow in the areas affected by this round of rain and snow.
The influence range is larger, the intensity is stronger, and the snow line is pressed southward, or it may become the "standard" for the next round of rain and snow.
Beijing News (Reporter Wang Jingxi) From January 21 to 23, under the combined influence of cold and warm air, the largest range of rain and snow weather has occurred in central and eastern my country this year.
Ma Xuekuan, chief forecaster of the Central Meteorological Observatory, said that the demarcation line between rain and snow in this round of processes is northerly than the same period in previous years.
The Central Meteorological Observatory predicts that from January 25 to 28, the central and eastern regions will usher in a new round of large-scale rain and snow. At that time, there will still be rain and snow in the areas affected by this round of rain and snow.
The strength of the cold and warm air is comparable, and this round of rain and snow lasts for a long time
According to Ma Xuekuan, the interaction between the weak cold air in the northern region and the warm and humid air flow northward in the low-latitude region is the cause of the large-scale rain and snow process in the central and eastern regions of this round.
This round of rain and snow has a large impact. From January 21 to 23, light to moderate snow or sleet will appear in central Inner Mongolia, Shaanxi, Shanxi, Hebei, Beijing, Tianjin, Henan, Shandong, and northwestern Hubei. Snow, heavy snow in some areas, local blizzard.
In most parts of the south, such as Jianghuai, Jianghan, Jiangnan, South China, and the eastern part of the Southwest, there are mainly light to moderate rains, and there are local heavy rains.
"Because the power of cold air is weak, and the strength of cold and warm air is equal, the duration of this round of rain and snow will be relatively long." Ma Xuekuan introduced.
When will this round of large-scale rain and snow weather end?
According to Ma Xuekuan, the main period of precipitation is just before the night of the 23rd, and it is expected that during the day on the 24th, there will be a short interval of precipitation.
The dividing line between rain and snow this time is farther north than the same period in previous years, and it is expected that the next round of rain and snow will "press the snow line south"
Since January, two large-scale rain and snow weather processes have occurred in the central and eastern regions of my country.
According to Ma Xuekuan, compared with the rain and snow process from January 4th to 5th, the impact of this round of process is larger.
At the same time, it is worth noting that the demarcation line between rain and snow in this round is farther north than the same period in previous years.
According to Ma Xuekuan, although the cold air activity has been frequent recently, the cold air force is generally weak, causing the basic temperature in the central and eastern parts of the country to be higher than the same period of the year, so the boundary between rain and snow is significantly norther than the same period in previous years, roughly located in southern Shandong— The northern part of Anhui Province, Jiangsu Province - the northwestern part of Hubei Province, and the southern part of this area is dominated by rainfall.
This round of rain and snow has not yet ended, but the next round of rain and snow has been locked.
The Central Meteorological Observatory predicts that from January 25 to 28, the central and eastern regions will usher in a new round of large-scale rain and snow. At that time, there will still be rain and snow in the areas affected by this round of rain and snow.
The influence range is larger, the intensity is stronger, and the snow line is pressed southward, or it may become the "standard" for the next round of rain and snow.
Precipitation is conducive to alleviating drought, but attention should be paid to the adverse effects on traffic during the Spring Festival
Now is the Spring Festival. Will the rain and snow weather adversely affect it?
"From the 21st to the 23rd, there are actually two systems affecting the area from Shaanxi to North China. These places have experienced two significant snowfalls successively. The snow depth in some places reached 3-10 cm, and the snow depth in some places More than 10 cm. Moreover, the two snowfalls have a superimposed effect on Shaanxi, Shanxi, Henan and other places, so the snow on the ground is more obvious, and the temperature is relatively low, which will lead to the phenomenon of road icing.” Ma Xuekuan explained, Recently, the rain and snow in the central and eastern regions are more frequent, and the snowfall in some areas is relatively large, which will have a relatively large impact on the transportation during the Spring Festival. In addition, the continuous rain and snow will gradually lower the temperature. It is recommended that the public pay attention to traffic in time before traveling. Road conditions and weather forecast warning information to prevent the adverse impact of continuous rain and snow on traffic travel, pay attention to temperature changes, and add clothes in time.
In addition, he reminded that it is necessary to pay attention to the adverse effects of continuous rain and snow on urban operation, epidemic prevention and control, and energy supply.
Of course, the process of rain and snow also has its advantages. Recently, many places in the north and south of my country have been relatively dry, and precipitation is more beneficial to alleviate the drought in various places and promote agricultural production.