China Meteorological News reporter Zhao Xiaoni reported On June 24, rainfall in Beijing had ended. The reporter learned from the China Meteorological Administration that since noon on June 21, heavy rains have occurred in most areas of Beijing and heavy rains in some areas. The average rainfall in the city has reached 92 mm, and the rainfall in 156 stations in the city has exceeded 100 mm. The area of heavy rainstorms in Beijing reached 7,000 square kilometers, accounting for about 42% of the administrative area. Among them, the rainfall in Jiudu River in Huairou District reached 199.7 mm, which is the largest rainfall in this rainfall.
In addition, the cumulative rainfall in central Inner Mongolia, Hebei, central and northern Tianjin, southeastern Shanxi, northern and southeastern Henan, northeastern Shandong and central and western Shandong have exceeded 50 mm.
According to the analysis of the Central Meteorological Observatory, the rainfall process generally showed the following three characteristics: long duration and wide rainfall range; the rainfall was generally smooth, but local extremes were strong; water resources increased significantly, and the surrounding drought was alleviated.
data shows that from noon to the morning of June 21st, the rainfall in Beijing lasted about 66 hours, significantly longer than the 2016 "7.20" rainstorm and 2012 "7.21" rainstorm. The rainstorm area in Beijing, Tianjin and Hebei accounts for the percentage of administrative areas of the three provinces and cities: 77%, 49%, and 26% respectively; the heavy rainstorm area in Beijing is 7,000 square kilometers, accounting for 42% of the administrative area.
But during such a long rainstorm, many people did not feel "hard" because the rainfall during this precipitation process was generally smooth, but local extremes were strong. The rainfall in Beijing shows two phased characteristics. It was thunderstorms from the evening to night from the 21st, and it began to turn into stable rainfall during the day on the 22nd. The strong rainfall in the hour is generally less than 20 mm. Due to the long rainfall process and the slow rainfall, no obvious disasters occurred, but Changping and Tanghekou refreshed the historical record of the maximum precipitation in late June.
This rainfall also increased water resources by about 25.7 billion tons in Beijing and surrounding areas, of which about 1.4 billion tons of water resources were added in Beijing, and the water storage capacity of Miyun Reservoir increased by 4.6 million tons. At the same time, the soil moisture of 10 cm in Liaoning, Shandong and Hebei increased by 10.8%, 14.1% and 32.4%, respectively, and the drought was further alleviated.
reporter learned that in response to the heavy rain process, the China Meteorological Administration launched a level 3 emergency response to major meteorological disasters (storm rain) at 18:00 on June 21, and Beijing, Tianjin, Hebei and other places also launched a level 3 emergency response to heavy rain. The Central Meteorological Observatory issued 20th period of heavy rain warning and strong convective weather warning; Beijing and surrounding provinces and cities issued a total of 1,867 warning information such as heavy rain, and issued about 723,000 information to the person responsible for the warning through the national early warning release system; Fengyun 2F meteorological satellite targeted Beijing Encrypted observations were conducted every 6 minutes in and around the surrounding areas.
(Source: China Meteorological News Agency)
Editor in charge: Xiaomai
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