Beijing Youth Daily NewsA reporter from the Beijing Youth Daily learned from the Beijing Meteorological Observatory that from the evening of the 11th to the night of the 12th, Beijing will welcome the heaviest rainfall since the flood season this year, and the amount of rainfall during the process will reach torrential rain to heavy rain. This rainfall process has the characteristics of long duration, large accumulated rainfall, strong wind, and obvious convective characteristics. The entire rainfall is expected to last more than 30 hours.
Yesterday afternoon, the Beijing Meteorological Observatory once again held a special meeting with the Central Meteorological Observatory, the meteorological observatories of various provinces (cities, districts) in the North China region, and the meteorological departments of the troops stationed in Beijing. According to the results of the consultation, there will be a wide range of heavy rainfall in the Beijing-Tianjin-Hebei region from the 11th to the 12th, with heavy rain in most areas and heavy rain in some areas, accompanied by short-term heavy rainfall and hail. Specifically in Beijing, from the evening of the 11th to the night of the 12th, the city will usher in the process of the strongest rainfall since the flood season this year, and the rainfall during the process will reach torrential rain to heavy rain.
Zhang Linna, chief forecaster of the Beijing Meteorological Observatory, introduced that this process has the characteristics of long duration, large accumulated rainfall, high wind, and obvious convective characteristics. In terms of time, the rain lasted for a long time. There were scattered thunderstorms around the evening of the 11th, and the main rainfall period was from midnight on the 11th to the night of the 12th. There were heavy rains to heavy rains in most areas. The whole process took more than 30 hours. In addition, there were still scattered thunderstorms in Japan from the 13th to the 14th.
From a quantitative point of view, the accumulated rainfall is large. In this rainfall process, the city’s accumulated average rainfall is 60-100 mm, 100-150 mm in the western and northern regions, and 200-300 mm in individual points. The wind force accompanying this raining process is also very strong. On the 12th, the wind was strong during the day, and most areas were easterly winds of magnitude 4 or 5, and gusts of up to 7-9. In addition, the convective characteristics of this rainfall process are obvious. From the evening of the 11th to the morning of the 12th, the convection is strong, and the maximum hourly rain intensity can reach 80-100 mm. During the rain, there was thunder and lightning, and there were small hail in the mountainous area.
The rainfall process this time was mainly caused by the combined effects of the warm and humid airflow from the south on the periphery of the subtropical high and the eastwardly moving low vortex. “Because of the continuous water vapor transportation and good power uplift, large-scale heavy rainfall in the Beijing-Tianjin-Hebei region has been caused.” Zhang Linna said, however, due to the uncertainty of the path and speed of the low vortex system that affected the heavy rainfall. , The location and extreme value of the rainfall center may be adjusted. The Municipal Meteorological Observatory will closely monitor the weather and release the latest forecast and warning information in a timely manner.
It officially started to fall today. This year, 10 days at the beginning, 20 days at the middle, and 10 days at the end. The hottest, humid and sweltering days of the year have officially arrived. At present, in the first few days, the temperature will be suppressed by rain and will not be too high. It is expected that the highest temperature will hover around 29~32℃ for most of the next 3 to 9 days, and will be suppressed by rain to 27℃ on the 12th. It is expected that the highest temperature in the Southern Suburb Observatory will be 27~32℃ and the lowest temperature will be 21~23℃ from the 11th to the 19th.
The Futian in Beijing is not only humid and hot, but also characterized by frequent rainfall. Next week, there will be continuous rain in Beijing. In addition to the heavy rainfall on the 11-12, thunderstorms will also occur in Japan on the 13th, 14th, and 16th-17th.
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Since the flood season this year, precipitation has far exceeded previous years
Many citizens feel that there will be more rainfall in Beijing this summer than in previous years. What are the facts? According to statistics from the Meteorological Department, since the flood season this year (June 1-July 9), the city’s average rainfall was 178.6 mm, which was about 50% more than the 125.1 mm in the same period of the year (1981-2010, the same below). The 103.4 mm in the same period last year was more than 70% higher. Among them, the city’s average rainfall from July 1 to 9 is 111.4 mm, which is more than double the average rainfall of 48.6 mm and more than 60% more than last year’s 67.0 mm.
The Beijing Meteorological Observatory reminds citizens that rain causes slippery roads, reduced visibility, and accumulation of water in low-lying sections. Please pay attention to prevent adverse effects on morning and evening peak traffic on Monday (12th), and arrange travel time reasonably.
In the first ten days of July, there was a lot of heavy rainfall (1st, 2nd, 5th), and the rainfall was more than doubled compared with the same period of normal years. The soil moisture content in mountainous areas was higher. This time, the heavy rainfall process was caused by mountain torrents and geological disasters in mountainous and shallow mountainous areas. The meteorological risk is high. The public is requested not to travel to dangerous areas, river courses, and areas with hidden geological hazards, and raise awareness of the prevention of heavy rainfall weather and secondary disasters.
During the raining period, there will be strong convective weather such as short-term heavy rain, strong wind and hail. Do not stay under tall buildings, billboards, temporary structures or big trees during thunderstorms. In terms of agricultural production, measures such as drainage and waterlogging prevention and wind prevention and reinforcement are needed to reduce losses from meteorological disasters. (Reporter Zhao Tingting)
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