How to judge the weather according to clouds?

The upper and lower clouds move in different directions, that is to say, the height and wind direction of the clouds are different, which often appear near the front or low pressure, so it means rain, and sometimes the wind direction of the clouds is opposite to the ground, so there is a "cloud headwind, and the weather will change." Cotton clouds refer to flocculent cumulus clouds. The appearance of such clouds indicates that the middle atmosphere is very unstable. If there is enough water vapor in the air and there is upward movement, cumulonimbus clouds will form and there will be thunderstorms. Gray cloud refers to nimbostratus, which is mostly formed by thickening and metamorphosing of high-level clouds. The range is very large and thick, and there is enough water vapor in the cloud, which often produces continuous precipitation. According to the moving direction of the cloud, it will be good to predict the weather. The clouds move west and south, which indicates that it will rain. The moving direction of a cloud usually indicates the wind direction at its height. This proverb explains the distribution of clouds in different parts of low pressure. Suitable for low-altitude fast-moving clouds that are densely covered all day. In the cirrocumulus, the appearance of such clouds indicates that the upper atmosphere is unstable. If the clouds continue to decrease and thicken, it means that the area is already in front of the trough of low pressure, and it will rain or wind soon. When the sun goes down, a wall-like dark cloud rises below the western horizon to catch the sun, indicating that the dark cloud moves eastward and the rainy weather system in the west is moving, and it is going to rain. Generally speaking, if there are clouds, it will rain that night; If you catch the high clouds, it will rain the next day. However, if the dark clouds in the west are lumpy or discontinuous, or some areas are cloudy, it is not a sign of rain in the future.