§   Develops from mature cumulus

§   Cloud base below 2000 m, while cloud top can develop to 6000 m above ground or even reaching the tropopause

§   Grows vertically and typically covers an area of a few kilometres in diameter

§   Usually associated with showery or adverse weather, including heavy rain, lightning, thunderstorms, rainstorms, hailstorms or even tornadoes

§   Commonly seen in the summer

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