During stormy days, you'll typically see cumulonimbus clouds. These are the classic storm clouds, characterized by their towering, anvil-shaped appearance. They can reach heights of up to 50,000 feet and are responsible for producing heavy rain, lightning, thunder, hail, and even tornadoes.

Here's a breakdown of the cloud types you might encounter during a storm:

* Cumulonimbus (Cb): These are the most common storm clouds. They are characterized by their towering, anvil-shaped appearance. They are responsible for producing heavy rain, lightning, thunder, hail, and even tornadoes.

* Altostratus (As): These clouds are often found ahead of a storm system. They are gray or bluish-gray and can cover the entire sky.

* Nimbostratus (Ns): These clouds are dark gray and can produce widespread, steady rain. They are often associated with warm fronts.

* Cumulus Congestus (Cu Cong): These clouds are towering cumulus clouds that can develop into cumulonimbus clouds. They are often seen ahead of a thunderstorm.

Remember, these are just a few of the cloud types you might see during a storm. The specific clouds you encounter will depend on the type of storm and the conditions in your area.