The cloud classification system is a method used to categorize clouds based on their appearance, altitude, and formation processes. It helps meteorologists and scientists identify different types of clouds, which can indicate various weather conditions. The system primarily divides clouds into four main groups: cirrus, cumulus, stratus, and nimbus. Each group is further divided into subcategories based on characteristics like shape and height. For example, cumulus clouds are fluffy and white, while stratus clouds appear as uniform gray layers. Understanding these classifications aids in predicting weather patterns and improving forecasts.