Look at the clouds to know the weather. What kind of clouds will bring what kind of weather?

The lightest and tallest clouds are called cirrus clouds. This kind of cloud is very thin, and sunlight can shine through the clouds to the ground, and the light and shadow of houses and trees are still very clear. Cirrus clouds float in strands, sometimes like a piece of white feathers, sometimes like a wisp of white silk yarn. If cirrus clouds are arranged in groups in the sky, like scaly waves caused by a breeze blowing across the water, they are cirrocumulus clouds. Cirrocumulus and cirrocumulus clouds are high, where there is little moisture, and they generally do not bring rain or snow. There are also white clouds that look like cotton balls, called cumulus clouds. They are often in the sky about two thousand meters away, scattered one after another, reflecting the bright sunshine, and the clouds are surrounded by golden brilliance. Cumulus clouds appear in the morning, peak in the afternoon, and gradually dissipate in the evening. On clear days, we may occasionally see altocumulus clouds. Altocumulus is a group of oblate spherical clouds, arranged very evenly. The blue sky is exposed between the clouds. From a distance, they look like snow-white sheep on the grassland. Cirrus clouds, cirrocumulus clouds, cumulus clouds and altocumulus clouds, are all very beautiful.

When the continuous rain and snow were about to come, cirrus clouds were gathering, and a thin layer of clouds gradually appeared in the sky, as if covered with a white silk curtain. This type of cloud is called cirrostratus. Cirrostratus clouds are slowly advancing and the weather will turn cloudy. Then, the clouds became lower and lower, and thicker and thicker. Looking at the sun or moon through the clouds was like looking through a layer of frosted glass, hazy. At this time, the cirrostratus cloud has changed its name, and it is time to call it an altostratus cloud. When altostratus clouds appear, it often rains or snows within a few hours. Finally, the clouds became lower and thicker, the sun and moon hid, and the sky was densely covered with dark gray clouds. This type of cloud is called nimbostratus. As soon as nimbostratus clouds form, continuous rain and snow will fall.

In summer, before thunderstorms arrive, you will first see light cumulus clouds in the sky. If Cumulus leucocumulus rapidly bulges upward, forming a tall cloud mountain with peaks reaching the zenith, it develops into Cumulus congestus. When the top of the cloud is composed of ice crystals, with a white hair-like lustrous strand structure, often in the shape of an anvil or a horsehair, it becomes a cumulonimbus cloud. The cumulonimbus clouds grew longer and higher, the cloud base slowly turned black, and the cloud peaks gradually blurred. After a while, the entire cloud mountain collapsed, and dark clouds filled the sky. In an instant, thunder rumbled, lightning flashed, and soon there was a crash. Heavy rain falls, sometimes bringing hail or tornadoes.