Where does this come from, and can I check it?

Powerful convective updrafts push storm clouds into the lower stratosphere. The figure is taken from NOAA, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.

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Yes. It sits on the Science shelf, one of 1,090 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.

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Cumulonimbus cloud towers can reach twelve kilometres high

Powerful convective updrafts push storm clouds into the lower stratosphere

Cumulonimbus clouds are towering thunderclouds driven by intense atmospheric convection when warm moist air rises rapidly through cooler surroundings. These massive storm systems can extend from low altitudes up to 12 kilometres into the stratosphere, where high altitude winds flatten their tops into characteristic anvil shapes. They generate heavy rainfall, hail, lightning, and tornadoes.

Cumulonimbus cloud over Africa — NASA · Public domain · source

Where this comes from

NOAA

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Tags: earth science, clouds, weather

Cumulonimbus cloud towers can reach twelve kilometres high: the short answers

Where does this come from, and can I check it?: Powerful convective updrafts push storm clouds into the lower stratosphere. The figure is taken from NOAA, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.
Is this really a science fact?: Yes. It sits on the Science shelf, one of 1,090 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.
What else can I read about it?: The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.