Many people just say cumulus, but their distinction tells you a lot about the weather. They don't grow as high into the atmosphere as a cumulonimbus (thunderstorm) cloud. There is a reason for that.

TA: We're not even talking about cumulonimbus clouds ... an understanding when we look at those lovely summer clouds that there's a lot of weight up there and it's amazing how it actually stays ...

However, if the air is particularly warm and humid, and the atmosphere above is much colder, cumulus clouds can rapidly grow vertically into cumulonimbus. When the edges of these clouds look ...

That "something else" appears to originate from space.

However, if the air is particularly warm and humid, and the atmosphere above is much colder, cumulus clouds can rapidly grow vertically into cumulonimbus. When the edges of these clouds look ...

Curious about whether the clouds you see mean sunny skies, roaring storms or a stunning sunset? Here’s your guide to the ...