The average precipitation in the city was 101.7 mm. How heavy was the rain in Beijing yesterday?
2024-08-10
한어Русский языкEnglishFrançaisIndonesianSanskrit日本語DeutschPortuguêsΕλληνικάespañolItalianoSuomalainenLatina
From yesterday morning to this morning, a heavy rainfall affected Beijing. The reporter sorted out the rainfall data released by the meteorological department and found that the rainfall was the heaviest from yesterday afternoon to the first half of the night, with extremely heavy rainstorms in some areas.
The rain became more severe after 17:00 yesterday, with rain meeting the criteria for heavy rain occurring in different places almost every hour.
The heaviest rain fell in Yujiawu, Tongzhou last night, with hourly rainfall reaching the level of "heavy rain"
Rainfall began in Beijing yesterday morning, with the morning rainfall echo mainly affecting western areas such as Mentougou, Fangshan and Fengtai.
The rain gradually increased in the afternoon and the affected area expanded. As of 17:00 yesterday, the average precipitation in the whole city was 32.9 mm, and the average precipitation in the urban area was 46.8 mm. In other words, as of 17:00 yesterday, the rainfall in Beijing reached the level of heavy rain (according to my country's rainfall level standard, rainfall of 30.0 to 69.9 mm within 12 hours is considered heavy rain).
According to the hourly rainfall intensity data released by the Beijing Meteorological Observatory, the rain became more intense after 17:00, with the "heaviest rain" occurring in turn in multiple locations in Beijing. Rain that met the heavy rain standards occurred in different places almost every hour.
From 15:00 to 16:00 on the 9th, the maximum precipitation intensity occurred in Dingfu Village, Daxing, 94.9 mm, which was a heavy rain level.
From 17:00 to 18:00, the maximum precipitation intensity occurred in Nanshao, Changping, 66 mm, which was a heavy rain level.
From 19:00 to 20:00, the maximum precipitation intensity occurred in Yexian Tower, Miyun, at 60.4 mm, which was at the level of heavy rain.
From 20:00 to 21:00, the maximum precipitation intensity occurred at Huairou Station, 49.6 mm, which was heavy rain level.
From 22:00 to 23:00, the maximum precipitation intensity occurred in Yujiawu, Tongzhou, 107.8 mm, which was a heavy rain level. This was also the heaviest hour of rain during this heavy rainfall and the strongest in the entire city.
At 2:00 a.m. on the 10th, the rainfall clouds affecting Beijing had weakened and moved away, and the Beijing Meteorological Observatory lifted the yellow warning signal for heavy rain.
The average precipitation in Beijing reached the level of heavy rain, and heavy rain occurred in many places
How heavy was the rain? According to the Beijing Meteorological Observatory, from 8:00 on the 9th to 2:00 on the 10th, the average precipitation in the city was 101.7 mm, and the average in the urban areas (Chao, Hai, Feng, Shi, Dong, Xi) was 101.5 mm. From the perspective of the entire rainfall process, the maximum precipitation in the urban area occurred in Aerospace City, Haidian District, reaching 214.9 mm. The maximum precipitation in the city occurred in Ximaguzhuang, Daxing, which was 250.6 mm. The maximum hourly precipitation intensity occurred in Yujiawu, Tongzhou, which was 107.8 mm (22:00-23:00 on the 9th).
Beijing's cumulative precipitation map. Photo courtesy of Beijing Meteorological Data Center
According to my country's rainfall grade standards, rainfall between 50.0 and 99.9 mm in 24 hours is heavy rain; rainfall between 100.0 and 249.9 mm in 24 hours is torrential rain; rainfall ≥140.0 mm in 12 hours or rainfall ≥250.0 mm in 24 hours is extremely torrential rain.
It can be seen that the average precipitation in Beijing has reached the level of heavy rainstorm, and Daxing Ximaguzhuang has experienced extremely heavy rainstorm. According to the data from 8:00 to 19:00 yesterday, the maximum precipitation in the urban area during this period occurred in Aerospace City, Haidian District, which was 143.3 mm, and the maximum precipitation in the city occurred in Dingfuzhuang, Daxing, which was 205.8 mm. The rainfall in the above two places also reached the level of extremely heavy rainstorm.
This rain is almost as heavy as the "heaviest rainfall since the beginning of the flood season" at the end of July.
From 0:00 to 22:00 on July 30, the average precipitation in Beijing was 97.1 mm, and the average precipitation in the urban area was 108.4 mm. There were 543 stations with precipitation ≥ 50 mm (accounting for 81%), and 304 stations with precipitation ≥ 100 mm (accounting for 45%). The maximum precipitation occurred in Dongshaoqu, Miyun, which was 276.5 mm.
Multiple warnings issued, Beijing temporarily closes roads and scenic spots
From the 8th to the 9th, Beijing issued multiple warnings. On the 8th, Beijing issued a blue warning for strong winds and a yellow warning for heavy rain. The Municipal Planning and Natural Resources Commission and the Municipal Meteorological Bureau issued a blue warning for geological disaster meteorological risks, which was upgraded to a yellow warning for geological disaster meteorological risks at 12:00 on the 9th.
At 20:00 on August 9, the Municipal Hydrological Station issued a blue flood warning. It is expected that the flow rate at the Beiguan Gate section of the Beiyun River Basin will reach 700 cubic meters per second from 2:00 to 4:00 on the 10th, reaching the blue warning level of flood. Citizens are requested to stay away from the river to ensure their own safety.
Yesterday, some sections of the road were flooded, and the Beijing Traffic Management Department temporarily closed the roads and some bus routes took dispatch measures.
On the 8th, Beijing Subway planned to add 92 temporary trains during the evening rush hour. Beijing Subway Company strengthened emergency duty and made every effort to provide travel service guarantee for passengers. Around 20:00 on the 9th, Beijing Subway Company deployed more than 11,000 security personnel, laid 2,834 anti-slip mats and placed 1,829 anti-slip warning signs at the stations under its jurisdiction, and distributed 3,248 disposable raincoats to passengers in need.
According to the Capital Airport, yesterday the airport activated the first-level response mechanism in coordination with the Transportation Management Committee to dynamically adjust the flight operation plan. On the 9th, the Capital Airport planned to have 1,264 flights take off and land. As of 18:00, 773 flights had been carried out.
According to @Beijing Suburban Railway, due to the rainfall warning, some trains on Beijing Suburban Railway were suspended today (10th).
According to the official WeChat account of Fangshan District, Beijing, in accordance with the relevant requirements of urban flood prevention, all scenic spots and rural homestays involving mountains and water in Fangshan District will be temporarily closed from 20:00 on August 8. In addition, Huairou Water Great Wall and Xiangshui Lake Great Wall scenic spots have issued temporary closure notices.
Beijing News reporter Wang Jingxi
Editor Zhang Lei Proofreader Liu Jun
