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Thick, dark clouds that cover the sky, often seen during continuous rain or snow events.

Low, lumpy, white or gray clouds that can cover the entire sky or appear in patches, not typically associated with significant weather.

Transparent, high-altitude clouds that cover the sky and often create halos around the sun or moon.

Thin, wispy clouds high in the sky, usually composed of ice crystals and indicative of fair, pleasant weather but can signify approaching storms.

White or gray clouds, often occurring in sheets or patches with wavy, rounded masses or rolls.

Gray or blue-gray mid-level clouds that typically cover the entire sky; often form ahead of storms with continuous rain or snow.

Large, towering clouds with a flat base and often an anvil-shaped top, associated with heavy rain, thunderstorms, and extreme weather conditions.

Small, white patches of clouds often in rows at high altitudes, resembling ripples or a 'mackerel sky'.

Gray, uniform clouds that often cover the entire sky like a blanket, leading to overcast conditions.