You are referring to cumulus clouds (and to cumulonimbus). Cumulus clouds are, indeed, flat-bottomed because they ride atop currents of rising warm air (warmer than the air surrounding them). Air ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. It has to do with the way cumulus clouds ...

Cumulus clouds, those puffy clouds common in the sky during warm days, especially in the summer, are indeed flat-bottomed. It’s because of the way they form. They exist at the top of columns of warm ...

Got your head in the clouds? Well, that's exactly where I want you. Clouds are fascinating to watch as they float through the sky. But what is even more intriguing is that their appearance can give ...

Cumulus clouds are the puffy white clouds that are formed by convection, raising parcels of air triggered by the sun heating the ground. If the clouds have limited vertical development and a distinct ...

Cumulus clouds form when air within several hundred feet of the ground, the so-called “surface layer,” is warmed enough during the day that it rises in columns or large “bubbles” sufficiently far ...

Why do some clouds look like cotton balls while others look like flying saucers? The shapes of clouds reveal different things ...

Did you know that there are over 100 different cloud types? Even though there are over 100, these cloud types can be grouped into smaller subtypes basic types depending on their general shape and ...

We see clouds almost every day and they can be very influential in the weather we experience from day to day. There are many different types of clouds and each is unique. In this Weather Why ...

Did you know that there are over 100 different cloud types? Even though there are over 100, these cloud types can be grouped into smaller subtypes basic types depending on their general shape and ...