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clouds
Fine droplets of water or ice crystal suspended in the atmosphere; the World Meteorological Organization classifies them according to 10 types.
low clouds
Clouds that do not exceed 2,000 meters in altitude and are composed of water droplets occasionally mixed with ice crystals; they sometimes generate continuous precipitation.
stratocumulus
Gray and white cloud arranged in more or less continuous rolled layers; it does not usually trigger precipitation.
nimbostratus
Cloud in the form of a dark layer sufficiently thick to block out the Sun; it triggers continuous precipitation.
stratus
Gray cloud forming a continuous veil that is similar to fog, though it never touches the ground; it can trigger light precipitation.