What are the omens of fish scale cloud?

The appearance of fish scale cloud is a kind of cloud layer before the arrival of cold air, which indicates the recent unstable weather conditions.

Fish scale cloud, also known as translucent cumulus cloud, is a white cloud shaped like a fish scale, commonly known as "fish scale cloud". It is a kind of cloud layer when strong cold air comes, which indicates the recent unstable weather conditions. Translucent cumulus clouds are often produced in fine weather.

If the translucent cumulus clouds do not change much, it indicates that it is sunny; If the thickness of the cumulus clouds continues to thicken and gradually merge into layers, it means that the weather will change and even precipitation will occur.

Semi-transparent cumulus clouds are affected by high altitude trough. Usually cold air passes through the border, and it will rain when it meets warm and humid airflow. Generally speaking, before the cold air comes, the clouds are high and the number is small; After the arrival of cold air, the clouds gradually became lower and thicker.

Extended data:

Clouds are water droplets floating in the air, supercooled water droplets, ice crystals or visible polymers, which are formed by condensation (sublimation) of water vapor in the atmosphere.

When the sun shines on the earth's surface, water (including water in rivers, lakes, oceans, animals and plants) is heated to form water vapor. Once the water vapor in the air is supersaturated, water molecules will gather around the dust (condensation nuclei) in the air, and the resulting water droplets or ice crystals will scatter sunlight in all directions, forming the appearance of clouds.

Cloud is an important part of the water cycle. With the continuous rising and cooling of the cloud or the input of water vapor outside the cloud, water droplets or ice crystals in the cloud keep gathering, so that the updraft can no longer "stay up", and these water vapor condensate will fall from the cloud, forming precipitation weather such as rain, snow and hail, and water will return to the surface, or seep into the soil, or flow into rivers, lakes and seas, and then evaporate, condense and fall, and repeat.

China News Network-The appearance of "fish scale cloud" in Yangzhou sky indicates the arrival of cold air.