What is the heavy rainfall in the north since the Ming Dynasty?

From August 1 1, there will be a large-scale heavy rainfall process in the north, involving more than ten provinces, among which Beijing, Tianjin, Hebei, Liaoning and other places will have the strongest rainfall since the flood season.

It is estimated that there will be moderate to heavy rain from west to east in the central and eastern parts of northwest China, Inner Mongolia, North China and Northeast China on June 5438+01-0/3, including heavy rain in southern Gansu, southwestern Shaanxi, northern Henan, southwestern Shanxi, northern and southern Hebei, Beijing, northern Tianjin and Liaoning.

The cumulative rainfall in southeastern Gansu, southwestern Shaanxi, northern and western mountainous areas of Beijing, northern Hebei, and central and eastern Liaoning is 60 ~ 120mm, and the local rainfall can reach 150 ~ 180mm, accompanied by lightning and short-term heavy rainfall (the maximum hourly rainfall intensity is 30 ~ 50mm), with local hail or hail.

Extended data

Weather background of this large-scale heavy rainfall in the north:

1 1 is a typical case of the main flood season in northern China every summer. At this time, the subtropical high transports warm and humid air from the south, and then cooperates with the cold air in the north, and the cold and warm air meet to form precipitation.

Although it is beginning of autumn now, judging from the temperature and humidity, the whole atmosphere is still in midsummer, which is what we traditionally call the main flood season in the north. Although the main flood season in the north is usually called "seven falls and eight rises", that is to say, late July to early August is an average state, and the situation will be different every year.

The main weather system affecting this heavy rainfall process is subtropical high. Under the background of subtropical high extending to the west and lifting to the north, a heavy rainfall process of 1 1 ~ 13 occurred in midsummer. This weather condition will continue in the coming week. 15 ~ 17 There will be another precipitation process in the north. If we adjust this weather situation, it almost indicates that autumn is coming in the north.

Jingchu. From tomorrow, Beijing and other places will be the strongest since the flood season, when there will be a large range of heavy rainfall in the north.