What is the weather like heavy rain?

Under normal circumstances, when the weather is sultry, the local air pressure rises sharply, and when cold air strikes in the stratosphere, it will gather into raindrops. If both air masses are large and sultry for several days, they will appear. When it rains heavily, the local temperature drops, forming a temporary low pressure, and high-pressure wet clouds will quickly squeeze in the surrounding areas where it doesn't rain, leading to heavy rain.

If one day the weather is suddenly sultry, in this case, we should pay attention to hail prevention.