Doppler 9&10 STEM: How Heavy is a Cloud?

Teachers & Parents:

Does your kid have a science question?

Have them send us a video with a weather question to!

We’ve all seen them, but we don’t think much about them. Clouds are a part of everyday life here on earth, but we never give them much thought.

Did you know they are heavy….like really heavy?

A simple cumulus cloud can weigh 1 million pounds!

Now I know what your thinking, how on earth is this floating over my head?

The answer is simple! Clouds are made up of very small drops of water floating around together will a bunch of air molecules.  So it’s easy for the air to keep those droplets afloat and together as a cloud!

Thunderstorms can be massive and much denser (less air between the drops of water).

So the average thunderstorm has 1 million tons of water! That is enough water to fill up 400 Olympic swimming pools!


If your kiddos try this experiment, send us photos of you and your experiment and you might get to see it during weather on The Four on Tuesdays!

Make sure you tune in every Tuesday for a New 9&10 STEM. Send us an email at or find us on Facebook and at Doppler 9&10 Weather Team if you have a weather question or want something in science explained! It does not have to be weather-related! Anything Science or math-based we’ve got you! You can always get the latest forecast on as well as interact with us on social media!


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Categories: Doppler 9&10 STEM, the four