Do you know what will happen before the rainstorm?

Dragonflies and swallows fly very low, ants are moving, and fish come to the water to breathe the air.

Rain usually occurs in four forms:

1, frontal rain (plum rain): Warm and humid air from the ocean meets cold air from the land. Because cold air is heavy and warm air is light, warm and humid air is forced to rise and condense when it is cold, forming a long and wide rain belt. This is frontal rain.

2. Convective rain: In summer, under the strong sunlight, the warm and humid air in some areas rises sharply, and it condenses when it meets cold to form rain. This is convective rain, which is called "thunderstorm" in meteorology, and we usually call it "explosion". In addition, typhoon rain is also a kind of convective rain.

3. Topographic precipitation: Warm and humid air from the ocean is forced to rise when it meets mountains, and condenses when it meets cold, resulting in rainfall.

4. Typhoon storm: The hot and humid air on the tropical ocean surface rotates and rises strongly in a large range. In the process of rising, the temperature drops rapidly, and a large amount of water vapor condenses into clouds and rain, which is typhoon rain.

Extended data

There are clouds hanging in the sky and rain dripping on the ground.

Hook clouds are very thin and white. Clouds are often arranged in parallel, with small hooks or clusters at the top and long tails at the bottom, much like comma symbols. The tail of hook clouds is usually caused by wind shear when ice crystals fall in the clouds. Hook clouds often appear scattered. If we move to the sky systematically and continue to develop, it indicates that there will be weather system influence, and even rainy weather may occur.

Battery cloud, rain.

Battery cloud refers to fort-shaped altocumulus or fort-shaped stratocumulus, which mostly appears in front of the trough of low pressure, indicating that the air is unstable. Generally, there are thunderstorms in 8- 10 hours.

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