Why does the updraft not cause rain but form a cloud belt?

Cause: The airflow in cyclone is convergent and rising, because the temperature decreases with the elevation, so the upward movement of airflow is easy to cause water vapor condensation to form clouds and cause rainfall.

The analysis of this topic mainly investigates the weather characteristics of cyclone weather system.

If the air contains a lot of water vapor, rainy weather will appear in the area controlled by cyclone; Because the airflow in the cyclone is convergent and rising, the temperature decreases with the increase of altitude, and the airflow rising is easy to cause rainfall. There are even strong convective weather such as typhoons and tornadoes.