What Are Fair Weather Clouds. But there are often some clouds left, at very high altitude. This is what happens in a high pressure because the pressure increases when the air sinks and, as it sinks, the air warms up by adiabatic effect and clouds evaporate.
Cirrus clouds are delicate, feathery clouds that are made mostly of ice crystals. Cirrus clouds are the most abundant of all high level clouds. Fair weather cumulus clouds are the type of clouds we want to see when we're planning to go on a picnic or go fishing…. and the kind we might get tired of if we're in a drought!
Each ecosystem has it's own unique patterns.
Does weather usually develop quickly or slowly in your area?
Cumulus clouds are often called "fair-weather clouds". Cirrus clouds are usually white and predict fair to pleasant weather. Sometimes, cumulus clouds can build vertically into what is called cumulus congestus.