If there are clouds on the top of the mountain, the weather will get worse.

If the translucency of the altocumulus does not change much, 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. There is a folk saying that "there are fish scales and clouds in the sky, and the wind is bumpy without rain." The appearance of this kind of cloud is because before the arrival of cold air, the cloud gradually depresses and thickens, which is formed due to the instability of upper air flow. ...