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Source caption: Beijing ushered in this winter’s first snowfall 8 days earlier than usual
China News Service, Beijing News, Nov 21 (Chen Hang) A reporter learned from the Beijing Municipal Meteorological Department on 21 that due to the combined influence of hot and humid air from the south and cold air, snow fell from the southwest northeast in Beijing from morning to the 21st. The weather is the first snow this winter. This meteorological process of snowfall has reached the first snow standard, 8 days before the usual date of the first snow (November 29). From 05:00 to 16:00 on the 21st, heavy snowfalls occurred in most areas.
It is reported that the average snow in Beijing is 4.7mm, the average snow in urban area is 5.3mm, the northwest is 3.3mm, the southwest is 5.6mm, the Northeast is 3.7mm and Southeast is 5.9mm. The maximum snowfall is 8.3mm in Chaichangtun Village, Tongzhou. The main reasons for this large amount of snow are: first, low temperature in the lower layers; second, good auxiliary power conditions; third, abundant water vapor, which favors the transport of water vapor, and the wet layer is deep.
Guo Jinlan, chief forecaster with the Beijing Meteorological Observatory, said that although rainfall has basically ended in most areas today, there are still sporadic light or light snowfalls in the mountains from late afternoon to the first half of the night. Due to the low temperature of the road surface at night, the icing on the road is easy, the Beijing Meteorological Observatory has issued a warning sign of icing on the yellow road at 8: 5.
Guo Jinlan introduced that affected by the cold air, it is expected that there will be north winds of magnitude 3 and 4 and gusts of magnitude 6 in the middle of the night from 21 to 22. In the next week, the temperature will remain low. The highest temperature during the day is expected to be 3 to 8 ° C, the lowest temperature at night will drop from -5 to -2 ° C, and the lowest in mountainous areas will reach -8 to -6 ° C.
The Beijing Municipal Meteorological Department recalled that there was snow on some sections of roads, the Xiaaoqiao area and mountain roads. Due to the high ground temperature in the urban area, there was no obvious snow during the day. With the overnight cooling, the roads are slippery and easy to freeze, so people need to pay attention to traffic safety when traveling on weekends. At midnight on the 21st and on the 22nd, the wind will be strong, so pay attention to fire and wind prevention when you go out. The temperature will be lower for the next week. Stay warm during outdoor activities. People who burn coal for heating should take care to prevent carbon monoxide poisoning. (End up)
