Yesterday, the temperature of 494 weather stations refreshed the historical extreme value of February
Experts interpret why the temperature is "higher"
Since the 18th of this month, temperatures have rebounded in many parts of the country, especially in the north, where temperatures above 20 degrees Celsius have appeared. Yesterday, during the daytime, a total of 494 meteorological observatories across the country broke their historical extreme values in February. The highest temperature at the Meteorological Observatory in the southern suburbs of Beijing reached 25.6℃.
Many netizens said that this temperature can even be replaced with short sleeves, but the China Meteorological Administration reminded that it is expected that the cold air will flow from north to south from the night of the 21st, and the temperature in central and eastern my country will ride a roller coaster.
Starting today, the temperature in Beijing will drop significantly, and it is expected that there will be light snow during the day from tonight to the day after tomorrow.
So you can't "take off long trousers."
Since February 18, temperatures have risen in many parts of the country. According to the China Weather Network, in the early morning of February 21, the lowest temperature in Shijiazhuang, Hebei was 18.9 degrees Celsius, which was the second time since February 1955 after 17.2 degrees Celsius on the 20th. The highest record of the lowest temperature.
At the same time, the lowest temperature in Jinan, Shandong Province was 15.1 degrees Celsius, breaking the highest record for the lowest temperature in February since 1951.
According to the Central Meteorological Observatory, during the daytime yesterday, temperatures in southern Beijing, central and southern Hebei, Guanzhong in Shaanxi, most of Shandong, Henan and most of the south were 25 to 29 degrees Celsius, and in Xixia, Henan, temperatures reached 30 degrees Celsius.
A total of 494 national meteorological observatories in Beijing, Tianjin, Hebei, Shanxi, Shandong, Henan, Anhui, Jiangsu, Hubei, Shaanxi, Liaoning and other provinces (municipalities directly under the Central Government) exceeded the historical extreme value in February since the meteorological record.
Among them, the highest temperature in the daytime at the Southern Suburb Observatory in Beijing was 25.6℃ yesterday.
"What is the concept of 24 degrees Celsius, which is equivalent to the temperature level in May of the year." The staff of the China Meteorological Administration introduced.
In this regard, many netizens living in the northern region said that the weather is not like February in the north. “There is a feeling of summer, and even I can wear short sleeves.” A netizen living in Beijing Say.
Regarding the recent surge in temperature in various places, many experts said that the reasons for the impact are actually different.
According to Zhang Ning, chief forecaster of the Henan Meteorological Observatory, the main reason why the temperature in Henan has continued to rise recently is that the cold air in the high latitudes of East Asia is weak. Most of the central and eastern parts of my country are controlled by the heating group, the weather is fine, and the westerly wind prevails on the ground. south wind.
According to Zhang Jiangtao, chief forecaster of the Hebei Meteorological Observatory, Hebei’s current temperature increase was caused by the heating masses, especially in the central and southern parts of Hebei Province, where there was no cold air for a long time or the cold air was weak.
In Shandong, Shi Qian, the chief forecaster of the Provincial Meteorological Observatory, said that due to the coordination of the warm ridge and the warm advection in the southwest, strong southerly ground winds are the main cause of the temperature increase.
Some experts believe that this increase in temperature has also been partly affected by the "foehn effect".
Zhang Jiangtao believes that the area along the Taihang Mountains is indeed affected by the Foehn wind. The heating group is concentrated in the front of the mountain and the heating group has become warmer.
According to the actual situation, the temperature on the north side of the Taishan Mountains is higher than that on the south side, and the wind force in Jinan and Zibo is also significantly higher, and there is also a partial foehn effect.
A reporter from Beijing Youth Daily understands that the so-called "foehn wind effect" is a kind of hot dry wind caused by the subsidence of mountain-crossing airflow forced by topographical dynamics. Any mountain with a relative altitude of no less than 800 to 1,000 meters in mid-latitude may appear.
prompt
Today's cold air "kills the carbine"
According to news from the China Meteorological Administration on the 21st, it is expected that from the night of the 21st, the cold air will flow from the north to the south, and the temperature in the central and eastern parts of my country will ride a roller coaster.
The Central Meteorological Observatory predicts that from the night of the 21st to the 23rd, the temperature in North China, Northeast China, Huanghuai, Jianghuai and other places will drop by 4 to 8 degrees Celsius, and the local temperature drop can exceed 10 degrees Celsius. Affected by strong winds and upstream transportation, in Inner Mongolia on the 21st Some areas in the west, northwestern Shanxi, north-central Hebei, Beijing, Tianjin, and Xinjiang's southern Xinjiang basin have blowing sand or floating dust.
In the next three days, the country’s precipitation will remain weak. The snowfall will mainly be concentrated in northern and southwestern Xinjiang, northeastern Inner Mongolia, Heilongjiang, and eastern Jilin, with light to moderate snowfalls and heavy snowfall in local areas. The Beijing Meteorological Observatory warned that it is affected by cold air. As a result, the maximum temperature will drop significantly today and tomorrow, and it is expected that the maximum temperature during the day will drop to about 5°C tomorrow.
There may be light snow or sporadic light snow in the northern region from today to the day after tomorrow.
This group of articles / our reporter Fu Yao Xieli, intern Huo Ziwei Coordinator / Jiang Shuo