There will be heavy rainfall in Beijing this weekend.
This round of heavy rainfall has basically ended, and the rain belt has moved to the northeast. In the next ten days, there will be 4-8 days of high temperature in the northwest, southern northern China, southern Jiangnan and southern China.
Since July 11, a heavy rain has hit many places in Beijing, Tianjin and Hebei.
On the whole, the heavy rainfall in North China has a wide range of influence and a large amount of accumulated rainfall. During the period, the windy weather was obvious, the local rain was strong, and the local daily rainfall exceeded the historical extreme value.
From July 13th, the main rainfall field has shifted to the northeast; a powerful ridge of warm high pressure is affecting the northern part of my country from west to east. The south has continued to be sunny and hot. The Central Meteorological Observatory continued to issue high temperature yellow warnings on July 13, and a wide range of high temperatures will soon start.
According to the latest analysis of meteorological data, there will be another strong rainfall in Beijing from 17-18.
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In this round of rainfall, Hebei and Henan locally broke through historical extremes
According to the monitoring and analysis of the Central Meteorological Observatory, the precipitation process that began on July 11 can be regarded as the beginning of the rainy season in North China this year, which is slightly earlier than the average start time of normal years (July 18).
According to statistics from the China Meteorological Administration, in this round of rainfall, the area with a cumulative rainfall of more than 50 mm is about 276,000 square kilometers, which is approximately equal to two Liaoning provinces; the area with a cumulative rainfall of more than 100 mm is about 92,000 square kilometers, which is similar to that of Chongqing. The area is almost the same.
On July 13, the Central Meteorological Observatory continued to issue blue warnings for heavy rain and blue warnings for severe convective weather.
On the whole, the heavy rainfall in North China has a wide range of influence and a large amount of accumulated rainfall. During the period, strong winds and strong local rain broke the historical extreme value.
Northeast Beijing, southern and northeastern Hebei, southeastern Shanxi, northern Henan, and northern Shandong reach 100-214 mm in 3 hours. Among them, Handan and Xingtai in Hebei, Jincheng in Shanxi, Jiyuan and Hebi in Henan have the largest hourly rainfall The amount can reach 100 to 125 mm.
The daily rainfall of 7 national meteorological observatories in Hebei and Henan exceeded the extreme value in July, while the Jize (206.4mm) in Hebei and Huaxian (211.7mm) in Henan exceeded the historical extreme since the meteorological record.
In this round of heavy rainfall in North China, Miyun in Beijing, Handan and Qinhuangdao in Hebei, Jincheng and Changzhi in Shanxi, Jiyuan and Hebi in Henan, Anyang, and Dezhou in Shandong, etc., the rainfall reached 220-343 mm, and the maximum hourly rainfall reached 102-125. Mm.
In comparison, the intensity of this rainfall process is not as strong as the heavy rainfall process at the northern end of China on July 20 in 2016.
In terms of scope, the coverage of this heavy rainstorm accounted for 58% of Beijing. In the “July 20” heavy rain in 2016, the coverage of Beijing accounted for 98%; from the perspective of the duration of rainfall, the “heaviest rainfall” lasted for this year. 36 hours, the heavy rainfall in 2016 lasted 55 hours.
Zhang Fanghua, chief forecaster of the Central Meteorological Observatory, introduced that the combination of the deep low vortex system and the strong low-level jet has brought heavy rains, heavy rains, and local heavy rains to most of the Beijing-Tianjin-Hebei region.
The low vortex system moves slowly, and the precipitation time is long; the east side of the low vortex is accompanied by a strong low-level jet, which brings abundant water vapor and unstable energy, which is very conducive to the production of heavy precipitation.
In addition, the low-level jet stream converges and rises on the windward slope of Taihang Mountain, which is also conducive to local production of stronger precipitation.
On July 13, this round of precipitation moved northeast, and the rainfall in the Beijing-Tianjin-Hebei area gradually weakened.
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There will still be thunderstorms in Beijing in the next three days
From July 13th, the rain will be transferred to the northeast at home.
From 14:00 on July 13 to 14:00 on July 14, there were heavy rains in eastern Inner Mongolia, western Heilongjiang, Liaoning, western Jilin, eastern Hebei, southern Tianjin, eastern and western mountains and eastern parts of mountains, and northwestern Yunnan. Among them, Liaoning There are heavy rainstorms (100-120 mm) in the southeast and other places.
At the same time, some of the above-mentioned areas are accompanied by short-term heavy rainfall, with a maximum hourly rainfall of 30-50 mm, and the local area can exceed 60 mm. There are strong convective weather such as thunderstorms, gales or hail.
It is estimated that the main impact period of strong convection will be from afternoon to night on July 13th.
On July 14 in Beijing, the daytime was cloudy to overcast, there were thundershowers in the mountainous areas, and the night was overcast with thundershowers turning to cloudy. There will be more thundershowers in the next three days.
According to the latest analysis of meteorological data, there will be another strong rainy weather process in Beijing from 17-18. Meteorological experts reminded that attention should be paid to nowcasting and early warning information.
At 10:00 on July 13, the Beijing Municipal Commission of Planning and Natural Resources and the Beijing Municipal Meteorological Bureau jointly continued to issue a yellow warning of meteorological risks for geological hazards. In the next 48 hours, the risk of geological hazards such as mudslides, avalanches, and landslides in Beijing’s mountainous areas will be higher. Please Pay attention to precautions.
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Large-scale high temperature is about to open the southern sunny and hot in progress
In the south under the direct control of the subtropical high system, sunny and hot weather will continue in the next few days; just after a round of heavy rainfall, a powerful ridge of warm high pressure is affecting northern my country from west to east.
The Central Meteorological Observatory continued to issue high temperature yellow warnings on July 13.
Meteorological expert Zhang Mingying explained that the warm high pressure ridge is a weather system that brings fine weather.
"The weather is fine in the range it controls, which is conducive to the increase in solar radiation temperature." Zhang Mingying said.
The high temperature area is centered in the east of northwest and diverges to all sides. Xinjiang, Gansu, Inner Mongolia, Ningxia, Shaanxi, and parts of Henan will have high temperature weather, and the temperature in some areas is even expected to break the high temperature record in the same period.
Among the provincial capital cities, Xi'an and Yinchuan will experience continuous high temperature days, with the highest temperature expected to reach 37°C.
Since the beginning of this year, Yinchuan has had 6 high temperature days. It is expected that there will be high temperatures in the next four days. If the number of high temperature days reaches ten days, this year will be the year with the highest number of high temperature days in Ningxia since 1961. The average number of high temperature days in Yinchuan is still Less than 2 days.
On July 13, western Inner Mongolia, eastern Gansu, central and southern Shaanxi, southern North China, western Huanghuai, western Jianghan, eastern Sichuan Basin, most of Jiangnan, and central and eastern South China had high temperatures above 35°C. Among them, western Inner Mongolia, The highest temperature in parts of Guanzhong, Shaanxi, northern and southwestern Zhejiang, central and northern Fujian, central and northern Jiangxi, and southeastern Hunan is 37-39°C, with local temperatures reaching 40°C.
Experts from the Central Meteorological Observatory analyzed that on July 14th, after the warm high pressure ridge and the subtropical high pressure system extending westward and northward were opened, the high temperature of the north and south will be connected together, and the high temperature range will be extended to the maximum of this process.
Meteorological experts reminded that in the coming week, there will be heavy precipitation in northern China, western Huanghuai and other places. The public is requested to travel reasonably and safely, minimize travel in mountainous areas, and stay away from areas with high risks of meteorological disasters.
In addition, in the next ten days, there will be 4 to 8 days of high temperature weather in Northwest China, Southern North China, Huanghuai, Jianghuai, Jiangnan, South China and other places. The public should take measures to prevent heatstroke and reduce the length of outdoor activities to prevent heatstroke.
New Beijing News trainee reporter Wang Jingxi