Fine droplets of water or ice crystal suspended in the atmosphere; the World Meteorological Organization classifies them according to 10 types.
Clouds at an altitude higher than 20,000 feet and composed of ice crystals; these clouds do not generate precipitation.
Cloud in the form of wisps or separate strips; it usually appears in advance of a depression.
Cloud formed of white or gray flecks or strips, often arranged in rows.
Whitish layer that can completely cover the sky and that creates a halo around the Sun.