Clouds can be a way to help set the tone of a world, especially so in worlds that are primarily visual. Different cloud types can have a large impact on any world that features a sky, and in worlds where air-travel is common or a central component clouds can be vital.
High Altitude Clouds
Filamentous clouds that are usually white in color though during sunrise and sunset will glow yellow or red. Cirrus clouds are composed of small ice crystals
Small thin patches of white clouds that seem to form grain or ripple-like patterns. These clouds are uncommon.
Fibrous or hair-like clouds. These clouds can be extensive and nearly cover the entire sky.
Mid Altitude Clouds
White or grey with rolls or rounded masses. These are the most common type of mid-altitude cloud.
Grey or bluish sheets of clouds that will only partially obscure the sun.
Results from a thickening of altostratus clouds and can entirely obscure the sun. Dark and grey. Can be host to heavy rain or snow. During precipitation the base of these clouds can descend to lower altitudes creating an extensive vertical cloud.
Low Altitude Clouds
Dense, individual, white clouds with darker flat bottoms. These usually form on otherwise clear days. Can form mounds, towers, and domes.
A massive thunderstorm cloud. These are dense clouds that form huge towers. Can also produce hail and tornadoes.
White or grey clouds that form in a lattice-like sheet.
A grey cloud layer with a uniform base.
Other Cloud Types & Behavior
Rolling waves in the base of clouds.
A cloud that has descended to rest on the ground.
An ‘upside-down’ cloud with the cloud sinking down into a pocket of drier air. Mammatus clouds are associated with thunderstorms and severe weather but are not always linked.