Winter is complete with snow, but this winter the Northeast seems to have poked a "snow nest", this winter the fifth round of rain and snow ended only a week, and the sixth round of rain and snow came again. Yesterday (December 6) snowfall in the northeast again, today and tomorrow into the main period of this round of process, Inner Mongolia, Heilongjiang parts of moderate to heavy snow. When does the snow stop?Will there be any more snow in the future?Why is it difficult to see snowflakes in North China, which is also in the north?Meteorological analysts from China Weather Network will interpret for you.
In November this year, most of the south is still steadily passing autumn, and the northeast has experienced five rounds of rain and snow, and it is snowing almost every week. "There is always endless snow, either in the snow or on the way to the snow" is the impression of many Northeast netizens on the snowfall this winter.
Frequent rain and snow have led to serious precipitation exceeding the standard, and the number of snowfall days is also significantly high. According to the meteorological data compiled by the China Weather Network, the cumulative precipitation in most parts of Northeast China in November this year was more than twice that of the same period in normal years, and the cumulative precipitation in the three provincial capitals of Harbin, Changchun and Shenyang was the highest in the same period since 1951. At the same time, the number of snowfall days is also more than normal, Harbin, Changchun, Shenyang in November snowfall days are more than 10 days, Heilongjiang Ning'an, Jixian snowfall days are even close to 20 days, more than 10 days more than the local perennial.
The old snow has not disappeared and new snow has been added, and the fifth round of snowfall has only ended for a week, and a new round of rain and snow has been online. Yesterday, snowfall has occurred in northeast Inner Mongolia, northwest and east Heilongjiang, eastern Jilin, and northeast Liaoning. "This is the sixth round of snowfall experienced in Northeast China this winter, today and tomorrow will enter the most obvious period of this round of process, due to the general water vapor conditions in this process, the northeast of Inner Mongolia and the northern part of Northeast China are generally dominated by light to moderate snow or sleet, and this round of snowfall will gradually weaken and stop during the day after tomorrow. Shi Yan, a meteorological analyst at China Weather Network, introduced.
After this round of rain and snow, there is a more significant snowfall in the northeast. Judging from the current forecast, from the 10th to the 11th, the water vapor conditions in eastern Liaoning, eastern Jilin, and eastern Heilongjiang will be more abundant, and there will be heavy snowfall locally.
Why is the snowfall in the Northeast this winter?Shi Yan said that this winter's cold air frequently affects the northeast, forming a high-altitude trough or cold vortex system at high altitude, and at the same time, there are surface cyclones to cooperate, providing good dynamic conditions for snowfallOn the other hand, surface cyclones transport water vapor from the Sea of Japan and the Yellow Sea to Tohoku, providing abundant water vapor conditions for snowfall. The power and water vapor conditions are good, resulting in frequent snowfall in Northeast China since this winter, and the intensity is strong, and the cumulative snowfall is large.
The amount of snow in Northeast China is excessive, but it is rare to see snowflakes in neighboring North China. Now that it has entered December, Beijing and Tianjin have not yet ushered in the first snow of this winterShi Yan said that it was mainly water vapor that choked the "neck" of North China snow. Northeast China is prone to snowfall mainly because of the water vapor supply from the eastern ocean, while North China has a monsoon climate, with northerly winds prevailing in winter, cold and dry, especially in the west and north of Beijing, blocked by mountain ranges, only when the southerly warm and humid airflow from the south is abundant enough, or when the easterly airflow in the lower level will "backflow" the Bohai sea vapor, there is a chance of snowfall.
Shi Yan reminded that the temperature in the Northeast will be drastic after this round of snowfall, and it will warm up significantly tomorrow, the maximum temperature will generally rise above freezing, and the snow will melt, but the day after tomorrow, many places in the Northeast will experience a sharp cooling, and the ice and snow will freeze quickly after melting, and the vehicle is easy to skid, which may lead to traffic accidents. It is recommended that the local public should be vigilant against the adverse effects of low temperature, rain, snow and ice on traffic, do not go out to clear snow during heavy snowfall periods, and still need to be alert to the danger of road ice after snowfall.
*: China Weather Network WeChat official account).
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