There is hail in Yuhang and Lin 'an of Hangzhou. What precautions should citizens take in bad weather?

There is hail in Yuhang and Lin 'an of Hangzhou. What precautions should citizens take in bad weather? With the arrival of bad weather, the temperature will change. Pay more attention to keep warm when wearing clothes to prevent colds, pay attention to road safety when traveling, and prevent traffic accidents when the road is slippery. For crops, we should pay attention to protect them in advance to avoid frostbite. I still have the following views on this matter:

1. What harm will hail bring?

Hail has a great influence on people's daily life. Not only crops and vegetables in farmland will be damaged, but also cars and planes may suffer. A big hail falls, which is equivalent to a big stone, and it is easy to break the glass of the vehicle. Such hard car glass will damage people's heads, even if it is light, it may be life-threatening, so it is quite terrible to hit people, and its harm is amazing.

Second, how is the bad weather formed?

The formation process of rainstorm is more complicated than other disastrous weather. Sufficient and continuous water vapor, strong and persistent updraft and unstable atmospheric structure are the main physical conditions for heavy rain. The main weather systems that cause large-scale rainstorm in China are cyclone, shear line, vortex and typhoon. In addition, in arid and semi-arid areas, thermal thunderstorms can cause short-term and small-scale heavy rains, and topography also has an impact on the formation and rainfall of heavy rains, for example, due to mountainous areas.

Third, how to correctly identify bad weather?

There are many harmful objects in the air, and often the worse the weather, the more harmful substances in the air, especially now that the epidemic situation is so serious. I strongly suggest that everyone should wear masks when going out, which can not only prevent COVID-19 infection, but also reduce the inhalation of harmful gases, thus reducing the occurrence of lung diseases. Everyone should pay more attention to physical safety.