Describe step by step how clouds form over a low pressure center

By definition itself, a low pressure center or area is a region of steadily rising air. Isentropic expansion cools the rising air, which in turn causes the condensation of water vapour, creating clouds. When air rises around a low pressure center, its level of saturation is then reached at an altitude. Clouds then form when water vapour condenses.

Hope my answer has come to your help.

When two tectonic plates collide and one or both push upwards they also push up the crust,a mountain will for so that will be your answer. hoped this