See? Cumulonimbus.

I know that cloud, it's a "cumulonimbus".

Did you know that a cumulonimbus...

I know that cloud, it's a "cumulonimbus".

Did you know that a cumulonimbus...

I know that cloud. It's a cumulonimbus.

The cumulonimbus formations about which you speak... ...that look like...

Sorry, everybody. There were some large cumulonimbus clouds blocking the sun, and l-I lost power.

Did you know that the cumulonimbus forms when warm air rises over cool air?

Do you know, she has a master's in Earth Science, and her favorite cloud's cumulonimbus.