A storm cellar is like a special room in the ground, kind of like a basement but outside. It's used for safety during really bad weather, like a thunderstorm or a tornado.
Sometimes when there's a big storm, the wind can be very strong and it can knock over trees or houses. It can also make a lot of rain come down really quickly and flood the area.
So, people have storm cellars to stay safe during these kinds of storms. They go inside and close the door, and then they wait until the storm is over. The cellar is built underground and has really strong walls and doors that can protect people inside from the strong winds and heavy rains outside.
Storm cellars are really important because they keep people safe during dangerous storms. They're like a special hideout where you can go and be safe until the storm passes.