Altocumulus
Mid-level clouds that often appear in patches or waves. Can be white or gray.
Mid-level
Can produce light rain or drizzle
Altocumulus (From Latin Altus, "high", cumulus, "heaped") is a middle-altitude cloud genus that belongs mainly to the stratocumuliform physical category characterized by globular masses or rolls in layers or patches, the individual elements being lar
Altostratus
Mid-level clouds that often cover the entire sky and can obscure the sun or moon. Can be white or gray.
Mid-level
Can produce light rain or drizzle
Altostratus is a middle-altitude cloud genus made up of water droplets, ice crystals, or a mixture of the two. Altostratus clouds are formed when large masses of warm, moist air rise, causing water vapor to condense. Altostratus clouds are usually gr
Beavers tail cloud
Clouds that have a long, thin, and wavy appearance and are often associated with fair weather. Can be white or gray.
Low-level
Do not produce precipitation
Cirrocumulus
High-level clouds that often appear in small, white patches or wavy lines. Can be white or gray.
High-level
Rarely produce precipitation
Cirrocumulus is one of the three main genus-types of high-altitude tropospheric clouds, the other two being cirrus and cirrostratus. They usually occur at an altitude of 5 to 12 km (16,000 to 39,000 ft). Like lower-altitude cumuliform and stratocumul
Cirrostratus
High-level clouds that often cover the entire sky and can cause halos around the sun or moon. Can be white or gray.
High-level
Rarely produce precipitation
Cirrostratus is a high-level, very thin, generally uniform stratiform genus-type of cloud. It is made out of ice-crystals, which are pieces of frozen water. It is difficult to detect and it can make halos. These are made when the cloud takes the for
Cirrus
Thin, wispy clouds that often have a wavy or curly appearance. Can be white or gray.
High-level
Rarely produce precipitation
Contrails
Long, narrow clouds that are formed by the exhaust from airplanes. Can be white or gray.
High-level
Do not produce precipitation
Contrails (; short for "condensation trails") or vapor trails are line-shaped clouds produced by aircraft engine exhaust or changes in air pressure, typically at aircraft cruising altitudes several miles above the Earth's surface. Contrails are co