Why is it always so sultry before the rainstorm, and sometimes it is still sultry after the rain?

When the weather is very sultry, people often say, "There may be a thunderstorm." So why is it sultry before a thunderstorm?

According to reports, there are two conditions for thunderstorms: First, the ground temperature should be high; Second, the atmospheric humidity should be high. When the ground is hot, the air temperature near the ground can rise very high, and after the temperature rises, it will gently float to the sky; If it is only hot, but the air is dry, the thunderstorm will not happen. Thunderstorm clouds can only be formed when high humidity air floats high into the sky. sky

There are thunderstorm clouds, and there may be thunderstorms.

When the weather is hot and there is a lot of water vapor in the air, the sweat on people is not easy to dissipate, and we will feel very stuffy. Just like taking a bath in the bathroom, it feels hot and stuffy, naturally because of the high temperature and steam in the bathroom. So sultry weather is a sign of high water vapor and temperature in the atmosphere, and it is also a sign of thunderstorm. Sometimes, although the weather is sultry, there are no thunderstorms, because the scope of thunderstorms in summer is relatively small, and it is uncertain that the rain may fall elsewhere.