Cloud

related topics
{math, energy, light}
{island, water, area}
{acid, form, water}
{ship, engine, design}
{style, bgcolor, rowspan}
{water, park, boat}
{black, white, people}

Autumn · Winter

Dry season · Wet season

Thunderstorm · Supercell
Downburst · Lightning
Tornado · Waterspout
Tropical cyclone (Hurricane)
Extratropical cyclone
Winter storm · Blizzard · Ice storm
Dust storm · Firestorm  · Cloud

Drizzle · Rain  · Snow · Graupel
Freezing rain · Ice pellets · Hail

Meteorology · Climate
Weather forecasting
Heat wave · Air pollution

A cloud is a visible mass of droplets of water or frozen crystals suspended in the atmosphere above the surface of the Earth or other planetary body. Clouds in the Earth's atmosphere are studied in the nephology or cloud physics branch of meteorology. This article concentrates mainly on clouds that form in the troposphere, the lowest layer of the Earth's atmosphere where most of the world's weather is generated.

Contents

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