What are the reasons for the abnormal weather caused by the sudden rainstorm in Wuhan?

In recent years, the world has become worse because of our disasters. Natural disasters such as bad weather factors include both natural factors and human factors. Humans cut down trees, destroy vegetation, consume too much energy, cause air pollution, cause greenhouse effect and lead to global warming.

Just recently, there was a sudden rainstorm in Wuhan. It is reported that there was strong convective weather from south to north in Wuhan yesterday 13. From 13 to 15, thunderstorms and strong winds of magnitude 8-1occurred in most parts of the city, and the maximum gust 14 (wind speed 44.9 m/m) appeared around 14: 40, which appeared in Wuhan Erqi. In just two hours, the rainfall in many places in Wuhan exceeded 50 mm, of which the maximum rainfall reached 1 13 mm. According to the survey, many places in Wuhan reached the rainstorm level within 1 hour, which shows the bad weather.

What caused the sudden occurrence of this level of heavy rain?

The cause of the rainstorm:

Rainstorm refers to the rain with strong water intensity, which is often formed in cumulonimbus clouds. According to China's meteorological regulations, rain with hourly rainfall exceeding 16 mm, or continuous rainfall exceeding 30 mm for 12 hours and rainfall exceeding 50 mm for 24 hours is called? Heavy rain? .

The main condition of rainstorm is that water vapor is transported upward by stable water vapor flow and strong and lasting upward movement. The water vapor in the cloud is continuously increased by the upward movement until the upward airflow can't hold down and falls sharply to the ground.

And what is the reason for so many heavy rains in Wuhan?

1. Climatic reasons

Wuhan is located in a subtropical monsoon climate with abundant rainfall and sunshine. Most parts of Wuhan are rainy in March, and the rainy season is long due to the influence of big rivers.

2. Geographical factors

Wuhan is located in the east of Hubei, at the intersection of the Yangtze River and Hanshui River, with a geographical location of 29? 583 1? 22? East longitude 1 13? 4 1 1 15? 05? . The horizontal distance from east to west in Wuhan is about 134 km, and the longitudinal distance from north to south is about 155 km.

Wuhan is located in the east of Jianghan Plain, where the middle reaches of the Yangtze River and the largest tributary Han River meet. There are many rivers, lakes and ports in the city.

Because of the geographical location of Wuhan, the cold air in the north and the warm and humid in the south meet here to form rain, which also explains why there is so much rain in Wuhan.

Friends in Wuhan should pay attention to the weather forecast when they go out, otherwise there will be sudden rainstorm when they work outside, and the safety is difficult to guarantee.