What is this cloud called? What's the weather forecast for tomorrow?

It may rain tomorrow. It's a sign of things to change. Generally speaking, before the cold air comes, the clouds gradually thicken and are distributed in layers. When the thick clouds "squeeze" each other, they will appear like fish scale clouds. Meteorological experts said that when these fish scale clouds accumulate to a certain extent, they will turn into rain clouds.

Some people mistakenly believe that translucent altocumulus clouds are earthquake clouds. Meteorologists say that there is no concept of "earthquake clouds" in meteorology. Translucent altocumulus clouds are affected by high-altitude troughs. Generally, cold air passes through and encounters warm and humid conditions. The airflow will make it rain. If there is cold air but no rain, it means that the air is not hot and humid and retains a certain amount of humidity high in the sky; if it is also dry high in the sky, it will be clear and cloudless weather.